/* ===== CSS Variables ===== */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #1a2f4d;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --text-accent: #64ffda;
    --accent-color: #64ffda;
    --accent-glow: rgba(100, 255, 218, 0.1);
    
    /* Modern Gradient System */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #64ffda 0%, #4ecdc4 50%, #667eea 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-glow: radial-gradient(circle at 50% 50%, rgba(100, 255, 218, 0.15) 0%, transparent 70%);
    --gradient-mesh: 
        radial-gradient(at 0% 0%, rgba(102, 126, 234, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(100, 255, 218, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(118, 75, 162, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(78, 205, 196, 0.08) 0px, transparent 50%);
    
    /* Glassmorphism */
    --glass-bg: rgba(17, 34, 64, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-colored: 0 10px 40px rgba(100, 255, 218, 0.2);

    /* Subtle cinematic texture */
    --texture-noise-opacity: 0.035;

    /* Refined timeline hover restraint */
    --timeline-hover-translate: 9px;
    --timeline-hover-duration: 0.42s;
    --timeline-hover-easing: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-accent: #00b4a6;
    --accent-color: #00b4a6;
    --accent-glow: rgba(0, 180, 166, 0.15);
    
    /* Light theme gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #00b4a6 0%, #4ecdc4 50%, #667eea 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-glow: radial-gradient(circle at 50% 50%, rgba(0, 180, 166, 0.12) 0%, transparent 70%);
    --gradient-mesh: 
        radial-gradient(at 0% 0%, rgba(102, 126, 234, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(0, 180, 166, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(118, 75, 162, 0.08) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(78, 205, 196, 0.06) 0px, transparent 50%);
    
    /* Glassmorphism (light) */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-colored: 0 10px 40px rgba(0, 180, 166, 0.15);
    --texture-noise-opacity: 0.022;
    --timeline-hover-translate: 7px;
    --timeline-hover-duration: 0.4s;
    --timeline-hover-easing: cubic-bezier(0.24, 1, 0.38, 1);
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    background-image: var(--gradient-mesh);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    pointer-events: none;
    z-index: 0;
    animation: pulse-glow 8s ease-in-out infinite;
}

/* Inspired by high-end portfolio studios: a very subtle film-grain layer for depth */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: var(--texture-noise-opacity);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.85) 0.55px, transparent 0.7px),
        radial-gradient(circle at 80% 40%, rgba(255, 255, 255, 0.7) 0.6px, transparent 0.8px),
        radial-gradient(circle at 60% 80%, rgba(255, 255, 255, 0.75) 0.55px, transparent 0.75px);
    background-size: 3px 3px, 4px 4px, 5px 5px;
    background-position: 0 0, 1px 1px, 2px 3px;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* Adaptive section lighting */
.ambient-gradient-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(42rem 42rem at var(--ambient-pos-1, 18% 12%), var(--ambient-color-1, rgba(102, 126, 234, 0.16)) 0%, transparent 65%),
        radial-gradient(34rem 34rem at var(--ambient-pos-2, 82% 22%), var(--ambient-color-2, rgba(100, 255, 218, 0.14)) 0%, transparent 68%),
        radial-gradient(38rem 38rem at var(--ambient-pos-3, 50% 86%), var(--ambient-color-3, rgba(245, 87, 108, 0.1)) 0%, transparent 70%);
    opacity: 0.9;
    transition: background 700ms ease, opacity 450ms ease;
}

body[data-active-section="home"] {
    --ambient-color-1: rgba(102, 126, 234, 0.18);
    --ambient-color-2: rgba(100, 255, 218, 0.16);
    --ambient-color-3: rgba(245, 87, 108, 0.11);
}

body[data-active-section="about"] {
    --ambient-color-1: rgba(78, 205, 196, 0.18);
    --ambient-color-2: rgba(100, 255, 218, 0.12);
    --ambient-color-3: rgba(79, 172, 254, 0.12);
}

body[data-active-section="experience"] {
    --ambient-color-1: rgba(102, 126, 234, 0.2);
    --ambient-color-2: rgba(118, 75, 162, 0.17);
    --ambient-color-3: rgba(100, 255, 218, 0.1);
}

body[data-active-section="skills"] {
    --ambient-color-1: rgba(79, 172, 254, 0.17);
    --ambient-color-2: rgba(0, 242, 254, 0.16);
    --ambient-color-3: rgba(100, 255, 218, 0.11);
}

body[data-active-section="projects"] {
    --ambient-color-1: rgba(240, 147, 251, 0.15);
    --ambient-color-2: rgba(245, 87, 108, 0.15);
    --ambient-color-3: rgba(102, 126, 234, 0.14);
}

body[data-active-section="contact"] {
    --ambient-color-1: rgba(100, 255, 218, 0.17);
    --ambient-color-2: rgba(79, 172, 254, 0.14);
    --ambient-color-3: rgba(78, 205, 196, 0.12);
}

html[data-theme="light"] .ambient-gradient-layer {
    opacity: 0.7;
}

html[data-theme="light"] body[data-active-section="home"] {
    --ambient-color-1: rgba(102, 126, 234, 0.13);
    --ambient-color-2: rgba(0, 180, 166, 0.12);
    --ambient-color-3: rgba(245, 87, 108, 0.07);
}

html[data-theme="light"] body[data-active-section="about"] {
    --ambient-color-1: rgba(78, 205, 196, 0.13);
    --ambient-color-2: rgba(0, 180, 166, 0.1);
    --ambient-color-3: rgba(79, 172, 254, 0.09);
}

html[data-theme="light"] body[data-active-section="experience"] {
    --ambient-color-1: rgba(102, 126, 234, 0.14);
    --ambient-color-2: rgba(118, 75, 162, 0.1);
    --ambient-color-3: rgba(0, 180, 166, 0.09);
}

html[data-theme="light"] body[data-active-section="skills"] {
    --ambient-color-1: rgba(79, 172, 254, 0.11);
    --ambient-color-2: rgba(0, 242, 254, 0.1);
    --ambient-color-3: rgba(0, 180, 166, 0.08);
}

html[data-theme="light"] body[data-active-section="projects"] {
    --ambient-color-1: rgba(240, 147, 251, 0.1);
    --ambient-color-2: rgba(245, 87, 108, 0.09);
    --ambient-color-3: rgba(102, 126, 234, 0.1);
}

html[data-theme="light"] body[data-active-section="contact"] {
    --ambient-color-1: rgba(0, 180, 166, 0.11);
    --ambient-color-2: rgba(79, 172, 254, 0.09);
    --ambient-color-3: rgba(78, 205, 196, 0.08);
}

::selection {
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--text-primary);
}

/* ===== Performance Optimizations ===== */

/* Enable GPU acceleration for animated elements */
.fade-in, .fade-in-up, .fade-in-down, .fade-right, .fade-left, 
.scale-in, .slide-in-left, .slide-in-right, 
.timeline-item, .skill-card, .project-card, .btn {
    will-change: transform, opacity;
    transform: translateZ(0); /* Force GPU acceleration */
    backface-visibility: hidden;
}

/* Optimize animations with GPU compositing */
@media (prefers-reduced-motion: no-preference) {
    * {
        scroll-behavior: smooth;
    }
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Explicit site-level motion override (manual toggle) */
html[data-motion="reduced"] *,
html[data-motion="reduced"] *::before,
html[data-motion="reduced"] *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
}

html[data-motion="reduced"] .ambient-gradient-layer,
html[data-motion="reduced"] .scroll-indicator {
    display: none;
}

/* Optimize font rendering */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Contain layout shifts */
.hero, .section, .project-card, .skill-card {
    contain: layout style paint;
}

/* Lazy load images optimization (for when images are added) */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* ===== Utilities ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-xs);
}

/* ===== Advanced Animation System ===== */
/* Base state for all animated elements */
[data-animate] {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Animation variants */
[data-animate="fade-up"] {
    transform: translateY(50px);
}

[data-animate="fade-down"] {
    transform: translateY(-50px);
}

[data-animate="fade-left"] {
    transform: translateX(50px);
}

[data-animate="fade-right"] {
    transform: translateX(-50px);
}

[data-animate="scale-in"] {
    transform: scale(0.85);
}

[data-animate="rotate-in"] {
    transform: rotate(-5deg) scale(0.9);
}

[data-animate="slide-up"] {
    transform: translateY(80px);
    opacity: 0;
}

/* Active state */
[data-animate].animated {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1) rotate(0);
}

/* Staggered delays for children */
[data-animate].animated:nth-child(1) { transition-delay: 0.1s; }
[data-animate].animated:nth-child(2) { transition-delay: 0.2s; }
[data-animate].animated:nth-child(3) { transition-delay: 0.3s; }
[data-animate].animated:nth-child(4) { transition-delay: 0.4s; }
[data-animate].animated:nth-child(5) { transition-delay: 0.5s; }
[data-animate].animated:nth-child(6) { transition-delay: 0.6s; }

/* Stagger group - applies to parent */
.stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stagger.animated > *:nth-child(1) { transition-delay: 0.1s; }
.stagger.animated > *:nth-child(2) { transition-delay: 0.2s; }
.stagger.animated > *:nth-child(3) { transition-delay: 0.3s; }
.stagger.animated > *:nth-child(4) { transition-delay: 0.4s; }
.stagger.animated > *:nth-child(5) { transition-delay: 0.5s; }
.stagger.animated > *:nth-child(6) { transition-delay: 0.6s; }
.stagger.animated > *:nth-child(7) { transition-delay: 0.7s; }
.stagger.animated > *:nth-child(8) { transition-delay: 0.8s; }

.stagger.animated > * {
    opacity: 1;
    transform: translateY(0);
}

/* Text reveal animation */
.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.text-reveal.animated span {
    opacity: 1;
    transform: translateY(0);
}

/* Number counter animation */
.counter {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: var(--font-mono);
}

/* Glowing pulse animation */
@keyframes glow-pulse {
    0%, 100% {
        box-shadow: 0 0 20px var(--accent-glow);
    }
    50% {
        box-shadow: 0 0 40px var(--accent-color);
    }
}

.glow-animate {
    animation: glow-pulse 3s ease-in-out infinite;
}
}

.section-header.centered {
    justify-content: center;
    text-align: center;
}

.section-number {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 1.25rem;
    font-weight: 400;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 2.8rem);
    line-height: 1.12;
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
    animation: gradient-flow 4s ease infinite;
    white-space: nowrap;
    font-weight: 800;
}

@keyframes gradient-flow {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.section-line {
    flex: 1;
    height: 1px;
    margin-left: var(--spacing-md);
    background: linear-gradient(90deg,
        color-mix(in srgb, var(--accent-color) 38%, transparent) 0%,
        color-mix(in srgb, var(--accent-color) 12%, transparent) 55%,
        transparent 100%);
    transform-origin: left center;
    transform: scaleX(0.72);
    opacity: 0.55;
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.55s ease;
}

.section-header.animated .section-line {
    transform: scaleX(1);
    opacity: 0.9;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    opacity: 0.95;
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

[data-theme="light"] .nav {
    background-color: var(--bg-secondary);
    opacity: 0.98;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: var(--font-mono);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    position: relative;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    border-radius: 999px;
    z-index: 1;
}

body.mobile-menu-open {
    overflow: hidden;
}

.mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(2, 8, 23, 0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 900;
}

.mobile-menu-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.nav-active-indicator {
    position: absolute;
    left: 0;
    bottom: 2px;
    height: calc(100% - 4px);
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent-color) 16%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent-color) 35%, transparent);
    box-shadow: 0 8px 20px color-mix(in srgb, var(--accent-color) 18%, transparent);
    pointer-events: none;
    transform: translateX(0);
    transition: transform 0.3s ease, width 0.3s ease, opacity 0.2s ease;
    opacity: 0;
}

.nav-active-indicator.visible {
    opacity: 1;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transform: translateX(-50%);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--accent-color);
}

.nav-link:hover::before {
    width: 80%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition-fast);
    transform-origin: center;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background-color: var(--accent-glow);
    transform: scale(1.05);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle i {
    font-size: 1.1rem;
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.theme-toggle .fa-sun {
    position: absolute;
    transform: rotate(-90deg) scale(0);
}

.theme-toggle .fa-moon {
    position: absolute;
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle .fa-sun {
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .theme-toggle .fa-moon {
    transform: rotate(90deg) scale(0);
}

/* Motion Preference Toggle */
.motion-toggle {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.motion-toggle:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
}

.motion-toggle i {
    position: absolute;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.motion-toggle .motion-on {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.motion-toggle .motion-off {
    opacity: 0;
    transform: rotate(-90deg) scale(0.7);
}

html[data-motion="reduced"] .motion-toggle {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: rgba(100, 255, 218, 0.08);
}

html[data-motion="reduced"] .motion-toggle .motion-on {
    opacity: 0;
    transform: rotate(90deg) scale(0.7);
}

html[data-motion="reduced"] .motion-toggle .motion-off {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quick-command-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid var(--border-color);
    background: rgba(100, 255, 218, 0.08);
    color: var(--text-primary);
    border-radius: 999px;
    padding: 0.45rem 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quick-command-trigger kbd {
    border: 1px solid var(--border-color);
    border-bottom-width: 2px;
    border-radius: 0.4rem;
    padding: 0.1rem 0.35rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-color);
}

.quick-command-trigger:hover {
    transform: translateY(-1px);
    border-color: var(--accent-color);
    background: rgba(100, 255, 218, 0.14);
}

.command-palette {
    position: fixed;
    inset: 0;
    z-index: 1400;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.command-palette.open {
    opacity: 1;
    pointer-events: auto;
}

.command-palette-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 25, 47, 0.7);
    backdrop-filter: blur(3px);
}

.command-palette-dialog {
    position: relative;
    width: min(680px, calc(100% - 2rem));
    margin: clamp(4rem, 10vh, 8rem) auto 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.command-palette-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.command-palette-header input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

.command-palette-close {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 0.5rem;
    cursor: pointer;
}

.command-palette-hint {
    color: var(--text-tertiary);
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.command-palette-hint kbd {
    display: inline-block;
    border: 1px solid var(--border-color);
    border-bottom-width: 2px;
    border-radius: 0.35rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    margin: 0 0.15rem;
    padding: 0.1rem 0.35rem;
}

.command-results {
    list-style: none;
    max-height: 340px;
    overflow-y: auto;
}

.command-result-item {
    width: 100%;
    text-align: left;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
}

.command-result-item:hover,
.command-result-item.is-active {
    background: rgba(100, 255, 218, 0.12);
}

.command-result-meta {
    color: var(--text-tertiary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Theme transition for all themed elements */
* {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: 0.3s;
    transition-timing-function: ease;
}

/* Exclude animations and transforms from theme transitions */
[data-animate],
.hero *,
.btn *,
img {
    transition-property: none;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(100, 255, 218, 0.05) 0%,
        transparent 30%,
        transparent 70%,
        rgba(102, 126, 234, 0.05) 100%);
    pointer-events: none;
    z-index: -1;
    animation: gradient-shift 15s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { 
        background-position: 0% 50%;
        opacity: 0.5;
    }
    50% { 
        background-position: 100% 50%;
        opacity: 0.8;
    }
}

.hero-content {
    max-width: 900px;
}

.hero-greeting {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.hero-name {
    font-size: clamp(3rem, 8vw, 5rem);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
    font-weight: 900;
    letter-spacing: -0.02em;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 4rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 700px;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: var(--transition-normal);
    cursor: pointer;
    border: 1px solid var(--accent-color);
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--bg-primary);
    border: none;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.015);
    box-shadow: 0 10px 24px rgba(100, 255, 218, 0.24);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: var(--text-secondary);
}

.btn-outline:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1rem;
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.5;
    transition: opacity 0.25s ease;
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--accent-color);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background-color: var(--accent-color);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 10px; }
    100% { opacity: 0; top: 30px; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* ===== About Section ===== */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.about-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.about-list li {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.about-list i {
    color: var(--accent-color);
    font-size: 0.75rem;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: visible;
    z-index: 0;
}

.image-wrapper::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    width: calc(100% + 10px);
    height: calc(100% + 10px);
    border-top: 2px solid var(--accent-color);
    border-left: 2px solid var(--accent-color);
    border-top-left-radius: var(--radius-md);
    z-index: 2;
    pointer-events: none;
    transition: var(--transition-normal);
}

.image-wrapper:hover::before {
    top: -6px;
    left: -6px;
}

.profile-photo {
    aspect-ratio: 1;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    position: relative;
    z-index: 1;
    border-radius: var(--radius-md);
    background: transparent;
    transition: var(--transition-normal);
}

.image-wrapper:hover .profile-photo {
    transform: scale(1.01);
}

/* ===== Timeline (Experience) ===== */
.experience-impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: var(--spacing-lg);
}

.impact-card {
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
    position: relative;
    overflow: hidden;
}

.impact-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    transform: translateX(-120%);
    transition: transform 0.6s ease;
    pointer-events: none;
}

.impact-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-colored);
}

.impact-card:hover::after {
    transform: translateX(120%);
}

.impact-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.impact-value {
    font-size: clamp(1.8rem, 2.8vw, 2.4rem);
    line-height: 1;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.impact-note {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.timeline {
    position: relative;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-color), var(--bg-tertiary));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 0.6rem;
    right: 0;
    bottom: calc(var(--spacing-lg) * -0.5);
    height: 1px;
    background: linear-gradient(90deg, var(--glass-border), transparent);
    opacity: 0.45;
    pointer-events: none;
}

.timeline-dot {
    position: absolute;
    left: -58px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 0 8px var(--accent-glow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--accent-color);
    transition: transform var(--timeline-hover-duration) var(--timeline-hover-easing), box-shadow var(--timeline-hover-duration) var(--timeline-hover-easing), border-color var(--timeline-hover-duration) var(--timeline-hover-easing), background-color var(--timeline-hover-duration) var(--timeline-hover-easing);
    border-top: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity var(--timeline-hover-duration) var(--timeline-hover-easing);
}

.timeline-content:hover::before {
    opacity: 1;
}

.timeline-content:hover {
    transform: translateX(var(--timeline-hover-translate));
    box-shadow: var(--shadow-colored);
    border-left-color: transparent;
}

.timeline-date {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 0.875rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.experience-highlights {
    list-style: none;
}

.experience-highlights li {
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.experience-highlights li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.impact-story {
    margin-top: var(--spacing-sm);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.impact-story summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1rem;
    color: var(--text-primary);
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.impact-story summary::-webkit-details-marker {
    display: none;
}

.impact-story summary span {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.impact-story summary i:first-child {
    color: var(--accent-color);
}

.impact-story summary i:last-child {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.impact-story[open] summary i:last-child {
    transform: rotate(180deg);
}

.impact-story:hover summary,
.impact-story[open] summary {
    background: rgba(100, 255, 218, 0.08);
    color: var(--accent-color);
}

.impact-story-panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s ease;
}

.impact-story[open] .impact-story-panel {
    grid-template-rows: 1fr;
}

.impact-story-panel > * {
    overflow: hidden;
}

.impact-story-panel p {
    margin: 0;
    padding: 0.2rem 1rem 0.75rem;
    color: var(--text-secondary);
}

.impact-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    padding: 0 1rem 1rem;
}

.metric-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    letter-spacing: 0.01em;
    color: var(--text-primary);
    border: 1px solid rgba(100, 255, 218, 0.28);
    background: rgba(100, 255, 218, 0.08);
}

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.skill-category:hover::before {
    opacity: 0.03;
}

.skill-category > * {
    position: relative;
    z-index: 1;
}

.skill-category:hover {
    border-color: var(--accent-color);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-colored);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.skill-category h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: var(--gradient-accent);
    color: var(--bg-primary);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(100, 255, 218, 0.3);
}

/* ===== Projects Section ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: relative;
}

.project-card.pulse-highlight {
    animation: project-pulse 1.2s ease;
}

@keyframes project-pulse {
    0% { box-shadow: 0 0 0 0 rgba(100, 255, 218, 0.45); }
    100% { box-shadow: 0 0 0 18px rgba(100, 255, 218, 0); }
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-colored);
}

.project-image {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    position: relative;
    overflow: hidden;
}

.project-image::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), inset 0 -36px 48px rgba(0, 0, 0, 0.18);
}

.project-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(10, 25, 47, 0.8);
    transition: var(--transition-normal);
}

.project-overlay i {
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.3;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay i {
    opacity: 0.8;
    transform: scale(1.1);
}

.project-content {
    padding: var(--spacing-md);
}

.project-type {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 0.875rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.project-content h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
}

.project-link {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-link:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: var(--accent-glow);
}

/* ===== Project Filters ===== */
.project-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background-color: var(--accent-glow);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.filter-btn i {
    font-size: 1rem;
}

/* ===== Enhanced Project Cards ===== */
.project-card {
    position: relative;
}

.project-card.hidden {
    display: none;
}

.project-card.fade-out {
    opacity: 0;
    transform: scale(0.9);
}

.project-card.fade-in {
    opacity: 1;
    transform: scale(1);
}

.project-expand {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: rgba(10, 25, 47, 0.9);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 2;
    opacity: 0;
}

.project-card:hover .project-expand {
    opacity: 1;
}

.project-expand:hover {
    background-color: var(--accent-color);
    color: var(--bg-primary);
    transform: scale(1.1) rotate(90deg);
}

/* ===== Project Modal ===== */
.project-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: grid;
    place-items: center;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.project-modal.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.project-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 10, 24, 0.72);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.project-modal-dialog {
    position: relative;
    width: min(680px, 100%);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), var(--shadow-colored);
    padding: clamp(1.25rem, 2vw, 2rem);
    z-index: 1;
    transform: translateY(16px) scale(0.96);
    opacity: 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.project-modal.open .project-modal-dialog {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.project-modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
}

.project-modal-close:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.project-modal-header {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.project-modal-type,
.project-modal-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    border: 1px solid var(--glass-border);
}

.project-modal-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    margin-bottom: 0.75rem;
}

.project-modal-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.project-modal-gallery {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.65rem;
    align-items: center;
    margin-bottom: 0.55rem;
}

.project-modal-gallery-viewport {
    min-height: 110px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: linear-gradient(145deg, rgba(100, 255, 218, 0.12), rgba(76, 175, 255, 0.1));
    padding: 1rem;
    display: flex;
    align-items: center;
}

.project-modal-slide {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    animation: fadeInUp 0.35s ease;
}

.project-modal-slide-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    display: grid;
    place-items: center;
    color: var(--accent-color);
    flex-shrink: 0;
    background: rgba(3, 10, 24, 0.2);
}

.project-modal-slide-text {
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}

.project-modal-nav {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.project-modal-nav:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
}

.project-modal-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 0.95rem;
}

.project-modal-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    background: var(--text-muted);
    cursor: pointer;
    opacity: 0.45;
    transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

.project-modal-dot.active {
    background: var(--accent-color);
    opacity: 1;
    transform: scale(1.25);
}

.project-modal-section h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.project-modal-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-modal-tech-item {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.project-modal-actions {
    margin-bottom: 0.85rem;
}

.copy-link-btn {
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
}

.copy-link-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.project-modal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.project-modal-links .project-link {
    margin-top: 0;
}

body.modal-open {
    overflow: hidden;
}

/* Project Header with Status */
.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.project-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-active {
    background-color: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.status-development {
    background-color: rgba(255, 193, 7, 0.1);
    color: #ffc107;
    border: 1px solid #ffc107;
}

.status-planning {
    background-color: rgba(156, 39, 176, 0.1);
    color: #9c27b0;
    border: 1px solid #9c27b0;
}

/* Tech Badges with Tooltips */
.tech-badge {
    position: relative;
    cursor: help;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.tech-badge:hover {
    color: var(--accent-color);
    background-color: var(--accent-glow);
    transform: translateY(-2px);
}

.tech-badge::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
    margin-bottom: 0.5rem;
    border: 1px solid var(--accent-color);
    z-index: 10;
}

.tech-badge::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--accent-color);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
    margin-bottom: -6px;
}

.tech-badge:hover::before,
.tech-badge:hover::after {
    opacity: 1;
}

/* Project Meta Info */
.project-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--bg-tertiary);
}

.project-stat {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.project-stat i {
    color: var(--accent-color);
    font-size: 0.875rem;
}

/* ===== Project Stats Section ===== */
.project-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: var(--radius-md);
    border: 1px solid var(--accent-color);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-mono);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Contact Section ===== */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.contact-method:hover {
    background-color: var(--bg-tertiary);
    transform: translateX(5px);
}

.contact-method i {
    color: var(--accent-color);
    font-size: 1.25rem;
}

.contact-method span {
    color: var(--text-secondary);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--bg-tertiary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer p {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* ===== Animations ===== */
.fade-in {
    animation: fadeIn 1s ease forwards;
}

.fade-in-up {
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-greeting { animation-delay: 0.1s; opacity: 0; }
.hero-name { animation-delay: 0.2s; opacity: 0; }
.hero-title { animation-delay: 0.3s; opacity: 0; }
.hero-description { animation-delay: 0.4s; opacity: 0; }
.hero-cta { animation-delay: 0.5s; opacity: 0; }

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: min(82vw, 320px);
        height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 0.5rem;
        padding: 6rem 1.25rem 2rem;
        background: color-mix(in srgb, var(--bg-secondary) 90%, #000 10%);
        border-left: 1px solid color-mix(in srgb, var(--accent-color) 20%, transparent);
        box-shadow: -18px 0 40px rgba(0, 0, 0, 0.28);
        transform: translateX(105%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.28s ease, opacity 0.2s ease, visibility 0.2s ease;
        z-index: 950;
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        font-size: 1rem;
        padding: 0.85rem 1rem;
    }

    .mobile-menu-btn {
        display: flex;
        position: relative;
        z-index: 1001;
    }

    .quick-command-trigger {
        display: none;
    }

    .command-palette-dialog {
        margin-top: 4.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-list {
        grid-template-columns: 1fr;
    }

    .experience-impact-grid {
        grid-template-columns: 1fr;
    }

    .impact-card {
        padding: 1rem;
    }
    
    .timeline {
        padding-left: var(--spacing-md);
    }
    
    .timeline-dot {
        left: -38px;
    }

    .impact-story summary {
        padding: 0.8rem 0.85rem;
        font-size: 0.9rem;
    }

    .impact-story-panel p {
        padding: 0.2rem 0.85rem 0.7rem;
    }

    .impact-metrics {
        padding: 0 0.85rem 0.85rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        gap: var(--spacing-xs);
        padding: var(--spacing-sm);
    }
    
    .filter-btn {
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
        flex: 1 1 auto;
        min-width: 120px;
    }
    
    .filter-btn i {
        display: none;
    }
    
    .project-stats {
        grid-template-columns: repeat(2, 1fr);
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .tech-badge::before {
        display: none; /* Hide tooltips on mobile */
    }
    
    .project-expand {
        opacity: 1; /* Always show on mobile */
    }

    .project-modal {
        padding: 1rem;
    }

    .project-modal-dialog {
        max-height: 85vh;
        overflow-y: auto;
    }

    .project-modal-gallery {
        grid-template-columns: 1fr;
    }

    .project-modal-nav {
        width: 100%;
        border-radius: var(--radius-md);
        height: 36px;
    }

    .project-modal-gallery-viewport {
        min-height: 96px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(100, 255, 218, 0.3);
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1);
    box-shadow: 0 6px 25px rgba(100, 255, 218, 0.5);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

[data-theme="light"] .back-to-top {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 180, 166, 0.3);
}

[data-theme="light"] .back-to-top:hover {
    box-shadow: 0 6px 25px rgba(0, 180, 166, 0.5);
}

/* ===== Scroll Progress Indicator ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--text-accent));
    z-index: 1001;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px var(--accent-color);
}

/* ===== Section Progress Indicator ===== */
.section-progress {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.section-progress.visible {
    opacity: 1;
    visibility: visible;
}

.section-progress-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-secondary);
    border: 2px solid var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.section-progress-dot::before {
    content: attr(data-label);
    position: absolute;
    right: calc(100% + 1rem);
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    box-shadow: var(--shadow-md);
}

.section-progress-dot:hover::before {
    opacity: 1;
    visibility: visible;
}

.section-progress-dot:hover {
    transform: scale(1.3);
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.section-progress-dot.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    width: 14px;
    height: 14px;
}

/* ===== Enhanced Sticky Navigation ===== */
.nav.nav-hidden {
    transform: translateY(-100%);
}

.nav.nav-scrolled {
    background-color: var(--bg-primary);
    opacity: 0.98;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .nav.nav-scrolled {
    background-color: var(--bg-secondary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.nav-link.active,
.nav-link[aria-current="page"] {
    color: var(--accent-color);
}

.nav-link.active::after,
.nav-link[aria-current="page"]::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    transform: translateX(-50%);
}

@media (max-width: 768px) {
    .section-progress {
        display: none;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-line {
        display: none;
    }
    
    .timeline-content {
        padding: var(--spacing-sm);
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* ===== Design Cycle #7: Modern Gradient & Glassmorphism Enhancements ===== */

/* Gradient text utility for accents */
.gradient-text {
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Enhanced contact section with gradient overlay */
.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(100, 255, 218, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 30% 70%, rgba(102, 126, 234, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Glassmorphism utility class */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Animated gradient border effect */
@keyframes rotate-gradient {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.gradient-border {
    position: relative;
    z-index: 1;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: var(--gradient-accent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gradient-border:hover::before {
    opacity: 1;
    animation: rotate-gradient 3s linear infinite;
}

/* Enhanced section number with gradient */
.section-number {
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* Depth layers for visual hierarchy */
.depth-layer-1 {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.depth-layer-2 {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.depth-layer-3 {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Gradient glow on hover utility */
.glow-on-hover {
    transition: box-shadow 0.4s ease, transform 0.4s ease;
}

.glow-on-hover:hover {
    box-shadow: var(--shadow-colored);
    transform: translateY(-4px);
}

/* Modern card with gradient accent line */
.modern-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.modern-card:hover::before {
    transform: scaleX(1);
}

/* Floating animation for enhanced depth */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.float-effect {
    animation: float 3s ease-in-out infinite;
}

/* Shimmer effect on load */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.shimmer {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(100, 255, 218, 0.1) 50%,
        transparent 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* Enhanced project filters with gradient active state */
.filter-btn.active {
    background: var(--gradient-accent);
    color: var(--bg-primary);
    border-color: transparent;
    box-shadow: var(--shadow-colored);
}

/* ===== Design Cycle #14: Adaptive Section Lighting + Contrast Tuning ===== */
html[data-theme="light"] .impact-card,
html[data-theme="light"] .timeline-content,
html[data-theme="light"] .skill-category,
html[data-theme="light"] .project-card,
html[data-theme="light"] .contact-card,
html[data-theme="light"] .command-palette-content {
    background: rgba(255, 255, 255, 0.88);
    border-color: rgba(26, 32, 44, 0.12);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

html[data-theme="light"] .impact-label,
html[data-theme="light"] .timeline-content h4,
html[data-theme="light"] .timeline-content p,
html[data-theme="light"] .experience-highlights li,
html[data-theme="light"] .project-content p,
html[data-theme="light"] .project-tech span,
html[data-theme="light"] .project-link,
html[data-theme="light"] .skill-tag {
    color: #334155;
}

html[data-theme="light"] .project-tech span,
html[data-theme="light"] .skill-tag {
    background: #e2e8f0;
}

/* Refined hover depth for premium card feel (all themes) */
.impact-card,
.timeline-content,
.skill-category,
.project-card {
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease, background-color 0.35s ease;
}

.timeline-content {
    transition: transform var(--timeline-hover-duration) var(--timeline-hover-easing), box-shadow var(--timeline-hover-duration) var(--timeline-hover-easing), border-color var(--timeline-hover-duration) var(--timeline-hover-easing), background-color var(--timeline-hover-duration) var(--timeline-hover-easing);
}

.impact-card:hover,
.skill-category:hover,
.project-card:hover {
    box-shadow: 0 18px 45px rgba(2, 12, 27, 0.3), var(--shadow-colored);
}

.timeline-content:hover {
    box-shadow: 0 18px 40px rgba(2, 12, 27, 0.26), var(--shadow-colored);
}

html[data-theme="light"] .impact-card:hover,
html[data-theme="light"] .timeline-content:hover,
html[data-theme="light"] .skill-category:hover,
html[data-theme="light"] .project-card:hover {
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.16), 0 10px 24px rgba(0, 180, 166, 0.18);
}