@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color System (Default: Light Theme) */
    --bg-base: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.7);
    --bg-card: rgba(255, 255, 255, 0.55);
    --bg-terminal: #f1f5f9; /* Xcode Light console style */
    --bg-terminal-text: #1e293b;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --grid-line: rgba(15, 23, 42, 0.05);
    
    /* Neon Accents (Light-optimized but vibrant) */
    --accent-cyan: #0284c7;
    --accent-cyan-glow: rgba(2, 132, 199, 0.15);
    --accent-purple: #7c3aed;
    --accent-purple-glow: rgba(124, 58, 237, 0.15);
    --accent-green: #059669;
    --accent-green-glow: rgba(5, 150, 105, 0.15);
    --accent-red: #dc2626;
    
    /* Border Styling */
    --border-cyan: rgba(2, 132, 199, 0.18);
    --border-purple: rgba(124, 58, 237, 0.18);
    --border-glass: rgba(15, 23, 42, 0.08);
    
    /* Font Families */
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Dynamic Values */
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --theme-transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Color System (Dark Theme) */
    --bg-base: #060913;
    --bg-surface: rgba(13, 20, 38, 0.55);
    --bg-card: rgba(18, 26, 47, 0.45);
    --bg-terminal: #02050b; /* Black Console */
    --bg-terminal-text: #cbd5e1;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --grid-line: rgba(255, 255, 255, 0.025);
    
    /* Neon Accents (Vibrant Glows) */
    --accent-cyan: #00f0ff;
    --accent-cyan-glow: rgba(0, 240, 255, 0.35);
    --accent-purple: #bd00ff;
    --accent-purple-glow: rgba(189, 0, 255, 0.35);
    --accent-green: #39ff14;
    --accent-green-glow: rgba(57, 255, 20, 0.35);
    --accent-red: #ff3860;
    
    /* Border Styling */
    --border-cyan: rgba(0, 240, 255, 0.15);
    --border-purple: rgba(189, 0, 255, 0.15);
    --border-glass: rgba(255, 255, 255, 0.05);
}

/* Enable theme transition globally */
body, header, footer, .glass-panel, .project-card, .skills-category, .terminal-wrapper, 
.terminal-body, .form-input, .filter-btn, .btn-primary, .btn-secondary, 
h1, h2, h3, h4, h5, h6, p, span, a, input, textarea, label {
    transition: var(--theme-transition);
}


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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-cyan) var(--bg-base);
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Canvas */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    opacity: 0.15;
    pointer-events: none;
}

.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        radial-gradient(circle at 30% 20%, rgba(189, 0, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 70% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 40%),
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
    z-index: -1;
    pointer-events: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Layout Elements */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 240, 255, 0.2);
    border-radius: 4px;
    border: 2px solid var(--bg-base);
}

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

/* Glassmorphism Panel Utilities */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.05);
    transition: var(--theme-transition);
}

[data-theme="dark"] .glass-panel {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.55);
}

.glass-panel:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 12px 40px 0 var(--accent-cyan-glow);
    transform: translateY(-2px);
}

.glow-border-cyan {
    position: relative;
}

.glow-border-cyan::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--accent-cyan), transparent, var(--accent-purple));
    opacity: 0.2;
    z-index: -1;
    transition: var(--transition-smooth);
}

.glow-border-cyan:hover::after {
    opacity: 0.6;
}

/* Cyberpunk Decorative Corner Brackets */
.cyber-corners {
    position: relative;
}

.cyber-corners::before, .cyber-corners::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border: 2px solid var(--accent-cyan);
    pointer-events: none;
    z-index: 5;
    transition: var(--transition-smooth);
}

.cyber-corners::before {
    top: -1px;
    left: -1px;
    border-right: none;
    border-bottom: none;
    border-top-left-radius: var(--border-radius-sm);
}

.cyber-corners::after {
    bottom: -1px;
    right: -1px;
    border-left: none;
    border-top: none;
    border-bottom-right-radius: var(--border-radius-sm);
}

.cyber-corners:hover::before, .cyber-corners:hover::after {
    border-color: var(--accent-purple);
    width: 22px;
    height: 22px;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 1200px;
    z-index: 100;
    background: var(--bg-surface);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.15);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    padding: 0 24px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--accent-cyan);
}

.logo .cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    background-color: var(--accent-cyan);
    animation: cursor-blink 1s infinite;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transition: var(--transition-smooth);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan-glow);
}

/* Hide sun in light mode and moon in dark mode */
html:not([data-theme="dark"]) .moon-icon {
    display: block;
}
html:not([data-theme="dark"]) .sun-icon {
    display: none;
}
html[data-theme="dark"] .moon-icon {
    display: none;
}
html[data-theme="dark"] .sun-icon {
    display: block;
}

.theme-toggle-btn svg {
    transition: transform 0.5s ease;
}

.theme-toggle-btn:hover svg {
    transform: rotate(45deg);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

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

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--accent-cyan);
    border-radius: 50px;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 24px;
    text-shadow: 0 0 10px var(--accent-cyan-glow);
}

.hero-badge .ping {
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-cyan);
    animation: pulse-ping 2s infinite;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 70%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title span {
    display: block;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 580px;
    margin-bottom: 32px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #000;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 240, 255, 0.5);
    color: #fff;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

/* System Security Status Panel */
.hero-visual {
    position: relative;
}

.security-panel {
    padding: 24px;
    border-radius: var(--border-radius-lg);
    background: rgba(10, 16, 32, 0.7);
    border: 1px solid var(--border-cyan);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
    padding-bottom: 12px;
    margin-bottom: 18px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.status-dot {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
}

.status-dot::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: pulse-ping 1.5s infinite;
}

.panel-body {
    display: flex;
    flex-column: wrap;
    flex-direction: column;
    gap: 16px;
    font-family: var(--font-mono);
}

.status-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

.status-label {
    color: var(--text-muted);
}

.status-value {
    color: var(--text-secondary);
}

.status-value.secure {
    color: var(--accent-cyan);
}

.hud-scanner-wrapper {
    position: relative;
    width: 100%;
    max-width: 250px;
    height: 250px;
    margin: 10px auto;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-cyan);
    background: rgba(10, 16, 32, 0.1);
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(0, 240, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .hud-scanner-wrapper {
    background: rgba(0, 240, 255, 0.02);
    box-shadow: inset 0 0 20px rgba(0, 240, 255, 0.05);
}

.radar-sweep-group {
    transform-origin: 100px 100px;
    animation: radar-spin 6s linear infinite;
}

@keyframes radar-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hud-svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Command Console / Terminal Widget */
.terminal-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: block;
}

.section-title {
    font-size: 2.2rem;
    background: linear-gradient(90deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.terminal-wrapper {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
    border: 1px solid var(--border-glass);
}

[data-theme="dark"] .terminal-wrapper {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
}

.terminal-titlebar {
    background: #e2e8f0;
    height: 40px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-glass);
}

[data-theme="dark"] .terminal-titlebar {
    background: #141b2c;
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn.red { background-color: #ff5f56; }
.terminal-btn.yellow { background-color: #ffbd2e; }
.terminal-btn.green { background-color: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    background-color: var(--bg-terminal);
    height: 420px;
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    overflow-y: auto;
    color: var(--bg-terminal-text);
    position: relative;
}

/* CRT Screen Scanlines and Glow */
.terminal-body::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.04) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.005), rgba(0, 0, 255, 0.02));
    background-size: 100% 3px, 3px 100%;
    z-index: 10;
    pointer-events: none;
    opacity: 0.8;
}

[data-theme="dark"] .terminal-body::after {
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.22) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.04));
    background-size: 100% 4px, 6px 100%;
}

.terminal-output {
    white-space: pre-wrap;
    margin-bottom: 12px;
    line-height: 1.5;
    position: relative;
    z-index: 2;
}

.terminal-welcome {
    color: var(--accent-cyan);
    margin-bottom: 16px;
    line-height: 1.5;
    position: relative;
    z-index: 2;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    position: relative;
    z-index: 2;
}

.terminal-prompt {
    color: var(--accent-purple);
    font-weight: 700;
}

.terminal-input-field {
    background: transparent;
    border: none;
    outline: none;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    flex-grow: 1;
    width: 100%;
}

/* About / Skills Grid */
.about-section {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
    align-items: flex-start;
}

.about-bio {
    padding: 32px !important;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-tabs-nav {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.about-tab-btn {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 8px 14px;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    position: relative;
    transition: var(--transition-smooth);
}

.about-tab-btn::after {
    content: '';
    position: absolute;
    bottom: -13px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transition: var(--transition-smooth);
}

.about-tab-btn:hover {
    color: var(--text-primary);
}

.about-tab-btn.active {
    color: var(--accent-cyan);
}

.about-tab-btn.active::after {
    width: 100%;
}

.about-tabs-content {
    position: relative;
}

.about-tab-pane {
    display: none;
    animation: tabFadeIn 0.4s ease forwards;
}

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

@keyframes tabFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-tab-pane p {
    font-size: 1.02rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-tab-pane p:last-child {
    margin-bottom: 0;
}

/* Education and Certifications styling */
.education-block {
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(15, 23, 42, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
}

[data-theme="dark"] .education-block {
    background: rgba(255, 255, 255, 0.015);
}

.edu-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 6px;
}

.edu-title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.edu-duration {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-purple);
    background: var(--accent-purple-glow);
    padding: 2px 10px;
    border-radius: 50px;
}

.edu-spec {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
}

.edu-institution {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.certifications-block {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cert-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
}

.cert-list, .spec-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cert-list li, .spec-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.cert-bullet, .spec-bullet {
    width: 6px;
    height: 6px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
    box-shadow: 0 0 6px var(--accent-cyan);
}

.personal-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 28px;
}

.spec-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    margin-bottom: 12px;
}

@media (max-width: 576px) {
    .personal-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

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

.skills-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.skills-category {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: var(--theme-transition);
}

[data-theme="dark"] .skills-category {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

.skills-category.skills-sec:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 30px var(--accent-cyan-glow);
}

.skills-category.skills-ai:hover {
    border-color: var(--accent-purple);
    box-shadow: 0 10px 30px var(--accent-purple-glow);
}

.skills-category.skills-dev:hover {
    border-color: var(--accent-green);
    box-shadow: 0 10px 30px var(--accent-green-glow);
}

.skills-category-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    margin-bottom: 18px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 10px;
}

.skills-category.skills-sec .skills-category-title svg { color: var(--accent-cyan); }
.skills-category.skills-ai .skills-category-title svg { color: var(--accent-purple); }
.skills-category.skills-dev .skills-category-title svg { color: var(--accent-green); }

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(15, 23, 42, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

[data-theme="dark"] .skill-tag {
    background: rgba(255, 255, 255, 0.02);
}

.skills-category.skills-sec .skill-tag:hover {
    background: var(--accent-cyan-glow);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.skills-category.skills-ai .skill-tag:hover {
    background: var(--accent-purple-glow);
    border-color: var(--accent-purple);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.skills-category.skills-dev .skill-tag:hover {
    background: var(--accent-green-glow);
    border-color: var(--accent-green);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.skill-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.skills-category.skills-sec .skill-tag .dot { background-color: var(--accent-cyan); }
.skills-category.skills-ai .skill-tag .dot { background-color: var(--accent-purple); }
.skills-category.skills-dev .skill-tag .dot { background-color: var(--accent-green); }

/* Projects Section */
.projects-section {
    padding: 80px 0;
}

.filters-wrapper {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.filter-btn:hover, .filter-btn.active {
    background: rgba(0, 240, 255, 0.08);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.project-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.project-type-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-purple);
    font-weight: 600;
    text-transform: uppercase;
}

.project-links {
    display: flex;
    gap: 12px;
}

.project-link-icon {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.project-title {
    font-size: 1.3rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 16px;
}

.project-lang {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.project-lang .lang-color {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.project-details-btn {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    font-weight: 500;
    cursor: pointer;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.project-details-btn:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* Modal Styling */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4, 7, 15, 0.85);
    backdrop-filter: blur(8px);
}

.modal-content {
    width: 100%;
    max-width: 650px;
    background: #0d1222;
    border: 1px solid var(--border-cyan);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 50px rgba(0, 240, 255, 0.15);
    position: relative;
    z-index: 1001;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

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

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1rem;
}

.modal-section-title {
    font-size: 0.9rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 10px;
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.modal-tag {
    font-size: 0.8rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    color: var(--text-secondary);
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: radial-gradient(circle at center, rgba(189, 0, 255, 0.03) 0%, transparent 60%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-title {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.contact-info-desc {
    color: var(--text-muted);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.1);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

.contact-text-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.contact-text-val {
    color: var(--text-secondary);
    font-weight: 500;
}

.contact-form {
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
}

.form-input {
    background: rgba(15, 23, 42, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
}

[data-theme="dark"] .form-input {
    background: rgba(6, 9, 19, 0.4);
}

.form-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan-glow);
    background: rgba(15, 23, 42, 0.06);
}

[data-theme="dark"] .form-input:focus {
    background: rgba(6, 9, 19, 0.7);
}

textarea.form-input {
    min-height: 120px;
    resize: vertical;
}

/* Footer Section */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px 0;
    background: var(--bg-terminal);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-socials {
    display: flex;
    gap: 20px;
}

.footer-social-link {
    color: var(--text-muted);
    font-size: 1.25rem;
}

.footer-social-link:hover {
    color: var(--accent-cyan);
    transform: translateY(-2px);
}

/* Animations */
@keyframes cursor-blink {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

@keyframes pulse-ping {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.5);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(0, 240, 255, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 240, 255, 0);
    }
}

@keyframes bar-dance {
    0%, 100% { height: 30%; }
    50% { height: 85%; }
}

.crypto-graph .bar:nth-child(2) { animation-delay: 0.2s; }
.crypto-graph .bar:nth-child(3) { animation-delay: 0.5s; }
.crypto-graph .bar:nth-child(4) { animation-delay: 0.1s; }
.crypto-graph .bar:nth-child(5) { animation-delay: 0.7s; }
.crypto-graph .bar:nth-child(6) { animation-delay: 0.3s; }
.crypto-graph .bar:nth-child(7) { animation-delay: 0.9s; }
.crypto-graph .bar:nth-child(8) { animation-delay: 0.4s; }

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-badge, .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Mobile menu logic can be added later */
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}