/* CSS Design System for Jun Wei Liu's Geek Portfolio */

:root {
    /* Fonts */
    --font-sans: 'Outfit', 'Noto Sans TC', sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Transition */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Theme Tokens (Dark Mode Default) */
    --bg-primary: #080c14;
    --bg-secondary: #0f172a;
    --bg-accent: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 35%, #8b5cf6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
    
    --border-color: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(6, 182, 212, 0.2);
    --card-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
    --glow-color: rgba(6, 182, 212, 0.15);
    
    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 16px;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

/* Light Mode Override */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-accent: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent-cyan: #0891b2;
    --accent-purple: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #0891b2 0%, #0284c7 40%, #7c3aed 100%);
    --accent-gradient-hover: linear-gradient(135deg, #0e7490 0%, #0369a1 100%);
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-glow: rgba(8, 145, 178, 0.2);
    --card-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08);
    --glow-color: rgba(8, 145, 178, 0.05);
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(15, 23, 42, 0.08);
    --glass-blur: 16px;
}

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

img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-select: none;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 85px; /* Offset for desktop fixed navbar */
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    position: relative;
    min-height: 100vh;
}

/* Custom scrollbars to match the geek/premium aesthetics */
/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-glow) var(--bg-primary);
}

/* WebKit (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
    transition: background-color var(--transition-normal);
}

::-webkit-scrollbar-thumb {
    background: var(--border-glow);
    border-radius: var(--radius-full);
    border: 3px solid var(--bg-primary);
    transition: background-color var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}

/* Terminal body scrollbar specifically for cleaner terminal look */
.terminal-body::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.terminal-body::-webkit-scrollbar-track {
    background: #090d16;
}

.terminal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    border: none;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}

/* Mobile menu scrollbar */
.nav-menu::-webkit-scrollbar {
    width: 5px;
}

.nav-menu::-webkit-scrollbar-track {
    background: transparent;
}

.nav-menu::-webkit-scrollbar-thumb {
    background: var(--border-glow);
    border-radius: var(--radius-full);
}

/* Grid & Mesh Overlay Backgrounds */
.bg-grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -3;
    pointer-events: none;
    opacity: 0.4;
}

.bg-mesh {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.15;
    transition: opacity var(--transition-normal);
    will-change: transform;
}

.bg-mesh-1 {
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
    animation: float-mesh-1 25s infinite ease-in-out;
}

.bg-mesh-2 {
    bottom: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
    animation: float-mesh-2 30s infinite ease-in-out;
}

[data-theme="light"] .bg-mesh {
    opacity: 0.08;
}

/* Background Particle Network Canvas */
#bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity var(--transition-normal);
}

[data-theme="light"] #bg-particles {
    opacity: 0.35;
}

@keyframes float-mesh-1 {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    33% {
        transform: translate(-10%, 15%) scale(1.1) rotate(120deg);
    }
    66% {
        transform: translate(5%, -5%) scale(0.95) rotate(240deg);
    }
    100% {
        transform: translate(0, 0) scale(1) rotate(360deg);
    }
}

@keyframes float-mesh-2 {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(15%, -10%) scale(1.15) rotate(-180deg);
    }
    100% {
        transform: translate(0, 0) scale(1) rotate(-360deg);
    }
}

/* Utility Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography Utilities */
.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--accent-cyan);
    font-weight: 500;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 25%;
    width: 50%;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

.section-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(6, 182, 212, 0.4);
    background: var(--accent-gradient-hover);
}

.btn-secondary {
    background: var(--bg-accent);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    background: var(--bg-secondary);
    border-color: var(--accent-cyan);
}

/* Glassmorphism utility card */
.glassmorphism {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glassmorphism:hover {
    border-color: var(--border-glow);
    box-shadow: 0 20px 40px -15px var(--glow-color);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(8, 12, 20, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-normal), padding var(--transition-normal);
    padding: 1.25rem 0;
}

.navbar.scrolled {
    padding: 0.75rem 0;
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.2rem;
    font-family: var(--font-mono);
}

.logo-tag {
    color: var(--accent-cyan);
    font-weight: 600;
}

.logo-name {
    letter-spacing: -0.05em;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-normal);
    border-radius: var(--radius-full);
}

.nav-link.active::after, .nav-link:hover::after {
    width: 100%;
}

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

.nav-menu-actions {
    display: none;
}

.btn-theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-theme-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.btn-game-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-game-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.btn-perf-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-perf-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.btn-perf-toggle.eco-mode {
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.08);
}

.btn-perf-toggle.eco-mode:hover {
    color: #34d399;
    border-color: #10b981;
}

.sun-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

.btn-menu-mobile {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 6rem;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #10b981;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.badge-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Geek Terminal Simulator */
.terminal-wrapper {
    width: 100%;
    background: #090d16;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-md);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #e2e8f0;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.terminal-wrapper:hover {
    transform: translateY(-2px);
    border-color: rgba(6, 182, 212, 0.3);
}

.terminal-header {
    background: #0f172a;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-buttons .dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.terminal-buttons .red { background-color: #ef4444; }
.terminal-buttons .yellow { background-color: #f59e0b; }
.terminal-buttons .green { background-color: #10b981; }

.terminal-title {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.terminal-icon {
    color: var(--text-muted);
    display: flex;
    align-items: center;
}

.terminal-body {
    padding: 1.25rem;
    height: 320px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    scroll-behavior: smooth;
}

.terminal-line {
    display: flex;
    gap: 0.5rem;
}

.term-prompt {
    color: #10b981;
    font-weight: 600;
}

.term-command {
    color: var(--text-primary);
}

.cmd-highlight {
    color: var(--accent-cyan);
    font-weight: 600;
}

.terminal-output {
    color: var(--text-secondary);
    padding-left: 0.5rem;
    white-space: pre-wrap;
    line-height: 1.5;
}

.neofetch-output {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.neofetch-logo {
    color: var(--accent-cyan);
    font-weight: bold;
    white-space: pre;
    line-height: 1.2;
}

.neofetch-info {
    line-height: 1.4;
}

.nf-label {
    color: var(--accent-purple);
    font-weight: 600;
}

.terminal-history {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-input-line input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    flex: 1;
}

/* About Section */
.about-section {
    padding: 6rem 0;
}

.about-wrapper {
    display: grid;
    grid-template-columns: 0.8fr 2fr;
    gap: 3rem;
    align-items: stretch;
}

.about-profile-photo-card {
    padding: 3rem 2rem 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
    gap: 1rem;
}

.about-profile-img-container {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-cyan);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.about-profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.about-profile-photo-card:hover .about-profile-img {
    transform: scale(1.05);
}

.about-profile-info .profile-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.2rem;
}

.about-profile-info .profile-title {
    font-size: 1rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    margin-bottom: 0.5rem;
}

.about-profile-info .profile-role {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.profile-socials {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 1rem;
}

.profile-socials a {
    color: var(--text-secondary);
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.profile-socials a:hover {
    color: var(--accent-cyan);
    transform: translateY(-2px);
}

.profile-socials a svg {
    width: 20px;
    height: 20px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Compact Timeline inside card */
.about-timeline-compact {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
    margin-top: 0.75rem;
    text-align: left;
    height: 190px;
    overflow-y: auto;
    padding-right: 0.5rem;
    scroll-behavior: smooth;
}

/* Custom scrollbar for timeline card */
.about-timeline-compact::-webkit-scrollbar {
    width: 4px;
}

.about-timeline-compact::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-full);
}

.about-timeline-compact::-webkit-scrollbar-thumb {
    background: var(--border-glow);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.about-timeline-compact::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}

.timeline-compact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
}

.timeline-compact-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.1rem 0.35rem;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    text-align: center;
    min-width: 42px;
}

.badge-upcoming {
    color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.badge-current {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.badge-past {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
}

.timeline-compact-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.timeline-compact-info strong {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
}

.timeline-compact-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 12, 20, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 2rem;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--accent-cyan);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.lightbox-nav:hover {
    background: var(--accent-cyan);
    color: #ffffff;
    border-color: transparent;
    transform: scale(1.05);
}

.lightbox-nav.prev {
    left: 2rem;
}

.lightbox-nav.next {
    right: 2rem;
}

.lightbox-content {
    max-width: 80%;
    max-height: 80%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    position: relative;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.lightbox-caption {
    color: var(--text-primary);
    font-size: 1.1rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.7);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.lightbox.hide {
    display: none !important;
}

/* Responsive Styles (RWD) */

.about-card {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
}

.about-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.about-card:nth-child(2) .about-icon {
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
}

.about-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.about-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Skills Section */
.skills-section {
    padding: 6rem 0;
    position: relative;
}

.skills-tab-container {
    max-width: 900px;
    margin: 0 auto;
}

.skills-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: all var(--transition-normal);
}

.tab-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-cyan);
}

.tab-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.2);
}

.skills-content {
    min-height: 280px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.4s ease-in-out forwards;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.skill-item {
    padding: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.skill-name {
    font-weight: 600;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-name svg {
    color: var(--accent-cyan);
    width: 18px;
    height: 18px;
}

.skill-level {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.skill-progress-bg {
    height: 6px;
    background: var(--bg-accent);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 1rem;
}

.skill-progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.2s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.skill-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Portfolio Section */
.portfolio-section {
    padding: 6rem 0;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 3.5rem;
}

.filter-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    color: var(--text-primary);
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.05);
}

.filter-btn.active {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    font-weight: 600;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    transition: all 0.3s ease;
}

.project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.project-img-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--bg-accent);
    border-bottom: 1px solid var(--border-color);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

.project-category-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.project-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex-grow: 1;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--bg-accent);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

.btn-project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color var(--transition-fast);
    align-self: flex-start;
    margin-top: 0.5rem;
}

.btn-project-link:hover {
    color: var(--accent-purple);
}

.btn-project-link svg {
    width: 16px;
    height: 16px;
}

/* Friends / Collaborators Section */
.friends-section {
    padding: 6rem 0;
    position: relative;
}

.friends-grid {
    display: flex;
    justify-content: center;
    width: 100%;
}

.friend-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 800px;
    border-radius: var(--radius-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.friend-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cyan);
    box-shadow: 0 20px 40px rgba(6, 182, 212, 0.1);
}

.friend-img-wrapper {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-cyan);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.friend-card:hover .friend-img-wrapper {
    transform: scale(1.05);
}

.friend-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.friend-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-grow: 1;
}

.friend-name {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.friend-bio {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.friend-links {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 0.5rem;
}

/* Contact Section */
.contact-section {
    padding: 3rem 0;
}

.contact-section .section-header {
    margin-bottom: 1.5rem;
}

.contact-section .section-title {
    font-size: 1.5rem;
}

.contact-section .section-title::after {
    height: 3px;
    bottom: -6px;
}

.contact-section .section-tagline {
    font-size: 0.88rem;
    margin-top: 0.35rem;
}

.contact-grid {
    display: flex;
    justify-content: center;
    width: 100%;
}

.contact-info-panel {
    max-width: 800px;
    width: 100%;
    padding: 2rem 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    border-radius: var(--radius-lg);
}

.contact-info-panel h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.contact-subtext {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    min-width: 0;
}

.contact-icon {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

a.contact-icon:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: var(--accent-cyan);
    transform: scale(1.08);
}

.contact-icon svg,
.contact-icon-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.contact-value {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.contact-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.contact-link, .contact-text {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.lab-status-panel {
    margin-top: 1rem;
    padding: 0.85rem 1.1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.lab-status-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ef4444;
}

.status-indicator.active {
    background-color: #10b981;
    box-shadow: 0 0 6px #10b981;
}

.status-title {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    font-weight: 600;
}

.lab-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

/* Contact Form */
.contact-form-panel {
    padding: 3rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-accent);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-cyan);
    background: var(--bg-secondary);
    outline: none;
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.15);
}

.error-msg {
    font-size: 0.8rem;
    color: #ef4444;
    position: absolute;
    bottom: -1.2rem;
    left: 0.2rem;
    display: none;
}

.form-group.invalid input, .form-group.invalid textarea {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.03);
}

.form-group.invalid .error-msg {
    display: block;
}

.btn-submit {
    width: 100%;
    margin-top: 1rem;
    height: 50px;
}

/* Button loading state spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hide {
    display: none !important;
}

/* Contact Success Alert */
.form-success-alert {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
    padding: 2rem 0;
    animation: fadeIn 0.5s ease forwards;
}

.alert-icon {
    font-size: 3.5rem;
    color: #10b981;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-success-alert h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.form-success-alert p {
    color: var(--text-secondary);
    max-width: 380px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-geek-stats {
    margin-top: 0.5rem;
    display: flex;
    gap: 0.75rem;
}

.stat-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.05);
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(6, 182, 212, 0.1);
}

.footer-nav-link {
    color: var(--accent-cyan);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    margin-left: 0.5rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    background: rgba(6, 182, 212, 0.08);
    padding: 0.1rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.footer-nav-link:hover {
    color: var(--accent-purple);
    border-color: rgba(139, 92, 246, 0.3);
    background: rgba(139, 92, 246, 0.08);
    transform: translateY(-1px);
}

.footer-nav-link svg {
    vertical-align: middle;
}


.footer-links {
    display: flex;
    gap: 1.25rem;
}

.footer-links a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

/* Custom Logo & PNG Icons styling */
.logo-img {
    height: 32px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-light-theme {
    display: none;
}

.logo-dark-theme {
    display: block;
}

[data-theme="light"] .logo-dark-theme {
    display: none;
}

[data-theme="light"] .logo-light-theme {
    display: block;
}

/* Light mode PNG icon inversion for visibility */
[data-theme="light"] img[src*="IG.png"] {
    filter: invert(1);
}

/* Instagram Hover QR Tooltip */
.ig-hover-qr-container {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.ig-hover-qr {
    position: absolute;
    bottom: 135%; /* Show above the icon */
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    box-shadow: 0 10px 25px rgba(6, 182, 212, 0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    width: 350px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    pointer-events: none; /* Prevent mouse events on tooltip itself */
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
    z-index: 100;
}

/* Tooltip arrow */
.ig-hover-qr::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--accent-cyan) transparent transparent transparent;
}

.ig-hover-qr img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    display: block;
}

.qr-tooltip-text {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    line-height: 1.2;
}

/* Hover show tooltip */
.ig-hover-qr-container:hover .ig-hover-qr {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Adjustments for contact list / footer positioning */
.contact-qr-position {
    bottom: auto;
    top: 135%; /* Show below in contact details */
}

.contact-qr-position::after {
    top: auto;
    bottom: 100%;
    border-color: transparent transparent var(--accent-cyan) transparent;
}

.footer-qr-position {
    bottom: 150%;
}

/* Light mode override for QR arrow and border colors */
[data-theme="light"] .ig-hover-qr {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-cyan);
}

[data-theme="light"] .qr-tooltip-text {
    color: var(--text-primary);
}

.social-icon-img {
    width: 20px;
    height: 20px;
    object-fit: contain;
    transition: transform var(--transition-fast);
}

.contact-icon-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.footer-icon-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
    opacity: 0.7;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.footer-links a:hover .footer-icon-img {
    opacity: 1;
    transform: translateY(-2px);
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid var(--accent-cyan);
    color: var(--text-primary);
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 2000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.1, 0.8, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    pointer-events: none;
}

.toast-notification.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--accent-cyan);
    display: inline-flex;
    align-items: center;
}

/* Responsive Styles (RWD) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .terminal-wrapper {
        max-width: 650px;
        margin: 0 auto;
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-card:last-child {
        grid-column: span 1;
    }
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
        scroll-padding-top: 70px; /* Offset for mobile fixed navbar */
    }
    
    .navbar {
        padding: 0.85rem 0;
    }
    
    .navbar.scrolled {
        padding: 0.6rem 0;
    }
    
    .btn-menu-mobile {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        padding: 2rem 0;
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity var(--transition-normal) cubic-bezier(0.1, 0.8, 0.2, 1),
                    transform var(--transition-normal) cubic-bezier(0.1, 0.8, 0.2, 1),
                    visibility var(--transition-normal);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        display: flex;
        flex-direction: column;
        align-items: center;
        max-height: calc(100vh - 100%);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }

    .navbar .nav-actions > .lang-dropdown-container,
    .navbar .nav-actions > .tools-dropdown-container,
    .navbar .nav-actions > .game-dropdown-container,
    .navbar .nav-actions > .btn-perf-toggle,
    .navbar .nav-actions > .btn-theme-toggle {
        display: none !important;
    }

    .nav-menu-actions {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 1.5rem;
        margin-top: 2rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--border-color);
        width: 80%;
    }

    .nav-menu-actions .lang-dropdown-menu,
    .nav-menu-actions .tools-dropdown-menu,
    .nav-menu-actions .game-dropdown-menu {
        right: 50%;
        transform: translateX(50%) translateY(10px);
    }
    
    .nav-menu-actions .lang-dropdown-menu.show,
    .nav-menu-actions .tools-dropdown-menu.show,
    .nav-menu-actions .game-dropdown-menu.show {
        transform: translateX(50%) translateY(0);
    }
    
    /* Hero Section Mobile Optimization */
    .hero-section {
        padding-top: 8rem;
        padding-bottom: 4rem;
    }
    
    .hero-content {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .badge {
        margin-bottom: 1rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    /* Section Margins & Headers */
    .about-section, .skills-section, .portfolio-section, .friends-section, .contact-section {
        padding: 4rem 0;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-title::after {
        bottom: -6px;
    }
    
    /* Reduced Padding for Panels/Cards on Mobile */
    .about-profile-photo-card {
        padding: 2rem 1.25rem;
    }
    
    .about-card {
        padding: 1.5rem;
    }
    
    .skill-item {
        padding: 1.25rem;
    }
    
    .project-info {
        padding: 1.25rem;
    }
    
    .skills-tabs {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info-panel,
    .contact-form-panel {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-geek-stats {
        justify-content: center;
    }

    /* Lightbox Mobile Adjustments */
    .lightbox-nav {
        width: 40px;
        height: 40px;
    }
    .lightbox-nav.prev {
        left: 0.5rem;
    }
    .lightbox-nav.next {
        right: 0.5rem;
    }
    .lightbox-close {
        top: 1rem;
        right: 1rem;
        font-size: 1.5rem;
    }
    .lightbox-content {
        max-width: 92%;
    }
    .lightbox-content img {
        max-height: 60vh;
    }

    .friend-card {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
        gap: 1.5rem;
    }

    .friend-links {
        justify-content: center;
    }

    /* Disable Instagram QR Tooltip on Mobile Devices */
    .ig-hover-qr {
        display: none !important;
    }
}

/* Stacking Neofetch logo/info on smaller viewports */
@media (max-width: 520px) {
    .neofetch-output {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        text-align: left;
    }
    .neofetch-logo {
        margin: 0 auto;
        font-size: 0.8rem;
    }
}

/* Scale down Hero Title & actions on very small viewports */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .terminal-body {
        padding: 0.85rem;
    }
    
    .terminal-wrapper {
        font-size: 0.78rem;
    }
}

/* Game Selector Dropdown Styling */
.game-dropdown-container {
    position: relative;
    display: inline-flex;
}

.game-dropdown-menu {
    position: absolute;
    top: 125%;
    right: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    padding: 0.5rem 0;
    list-style: none;
    min-width: 175px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.game-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.game-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.game-dropdown-menu a:hover {
    background: rgba(6, 182, 212, 0.08);
    color: var(--accent-cyan);
}

.game-dropdown-menu a svg {
    width: 16px;
    height: 16px;
    stroke-width: 2px;
}

/* Light mode adjustments for Game Dropdown */
[data-theme="light"] .game-dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* Language Selector Styling */
.lang-dropdown-container {
    position: relative;
    display: inline-flex;
}

.btn-lang-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-lang-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.lang-dropdown-menu {
    position: absolute;
    top: 125%;
    right: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    padding: 0.5rem 0;
    list-style: none;
    min-width: 130px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.lang-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-align: center;
}

.lang-option:hover {
    background: rgba(6, 182, 212, 0.08);
    color: var(--accent-cyan);
}

.lang-option.active {
    color: var(--accent-cyan);
    font-weight: 600;
    background: rgba(6, 182, 212, 0.05);
}

/* Light mode adjustments for Language Dropdown */
[data-theme="light"] .lang-dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-scale {
    transform: scale(0.95) translateY(20px);
}

.reveal.visible {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* Staggered transition delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Performance (Eco) Mode Overrides */
body.eco-mode {
    --glass-blur: 0px;
    --glass-bg: rgba(15, 23, 42, 0.95);
}

[data-theme="light"] body.eco-mode {
    --glass-bg: rgba(255, 255, 255, 0.98);
}

body.eco-mode .bg-mesh {
    animation: none !important;
    display: none !important;
}

body.eco-mode #bg-particles {
    display: none !important;
}

body.eco-mode .navbar {
    background: var(--bg-secondary) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.eco-mode .glassmorphism {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.eco-mode .navbar.scrolled {
    background: var(--bg-secondary) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* Tools Selector Dropdown Styling */
.tools-dropdown-container {
    position: relative;
    display: inline-flex;
}

.btn-tools-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-tools-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: scale(1.05);
}

.tools-dropdown-menu {
    position: absolute;
    top: 125%;
    right: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    padding: 0.5rem 0;
    list-style: none;
    min-width: 200px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.tools-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tools-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tools-dropdown-menu a:hover {
    background: rgba(6, 182, 212, 0.08);
    color: var(--accent-cyan);
}

.tools-dropdown-menu a svg {
    width: 16px;
    height: 16px;
    stroke-width: 2px;
}

[data-theme="light"] .tools-dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}