/* ===================================================================
   Liban Ali Syed — Portfolio
   OS-aesthetic glassmorphism design system
   =================================================================== */

/* ---------- CSS Custom Properties (Light Mode) ---------- */
:root {
    /* Core palette */
    --bg-primary: #f2f0ed;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8f7f5;
    --surface: rgba(255, 255, 255, 0.72);
    --surface-hover: rgba(255, 255, 255, 0.88);
    --surface-border: rgba(0, 0, 0, 0.06);
    --surface-shadow: 0 2px 24px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.04);
    --surface-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.04);

    /* Text */
    --text-primary: #1a1a1a;
    --text-secondary: #5c5c5c;
    --text-tertiary: #8a8a8a;
    --text-inverse: #ffffff;

    /* Accent */
    --accent: #0071e3;
    --accent-light: #e8f2fd;
    --accent-hover: #0062c4;

    /* Semantic */
    --dot-red: #ff5f57;
    --dot-yellow: #febc2e;
    --dot-green: #28c840;

    /* UI tokens */
    --nav-bg: rgba(255, 255, 255, 0.78);
    --nav-border: rgba(0, 0, 0, 0.08);
    --glass-blur: 20px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Transition */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Blobs */
    --blob-1: rgba(0, 113, 227, 0.08);
    --blob-2: rgba(168, 85, 247, 0.06);
    --blob-3: rgba(52, 211, 153, 0.06);

    /* Pill */
    --pill-bg: rgba(0, 0, 0, 0.04);
    --pill-text: var(--text-secondary);
    --pill-border: rgba(0, 0, 0, 0.06);

    /* Tag */
    --tag-bg: var(--accent-light);
    --tag-text: var(--accent);
}

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
    --bg-primary: #111111;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #161616;
    --surface: rgba(30, 30, 30, 0.72);
    --surface-hover: rgba(40, 40, 40, 0.85);
    --surface-border: rgba(255, 255, 255, 0.08);
    --surface-shadow: 0 2px 24px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
    --surface-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.06);

    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #666666;
    --text-inverse: #111111;

    --accent: #4db5ff;
    --accent-light: rgba(77, 181, 255, 0.12);
    --accent-hover: #7ac7ff;

    --nav-bg: rgba(17, 17, 17, 0.82);
    --nav-border: rgba(255, 255, 255, 0.06);

    --blob-1: rgba(77, 181, 255, 0.06);
    --blob-2: rgba(168, 85, 247, 0.05);
    --blob-3: rgba(52, 211, 153, 0.04);

    --pill-bg: rgba(255, 255, 255, 0.06);
    --pill-text: var(--text-secondary);
    --pill-border: rgba(255, 255, 255, 0.08);

    --tag-bg: var(--accent-light);
    --tag-text: var(--accent);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.5s var(--ease), color 0.4s var(--ease);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ---------- Ambient Background ---------- */
.ambient-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 1;
    transition: background 0.6s var(--ease);
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: var(--blob-1);
    top: -120px;
    right: -100px;
    animation: float1 18s ease-in-out infinite;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: var(--blob-2);
    bottom: 10%;
    left: -150px;
    animation: float2 22s ease-in-out infinite;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: var(--blob-3);
    top: 50%;
    left: 50%;
    animation: float3 20s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-60px, 40px) scale(1.08); }
}
@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, -50px) scale(1.05); }
}
@keyframes float3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(calc(-50% + 40px), calc(-50% - 30px)) scale(1.1); }
}

/* ---------- Container ---------- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ===================================================================
   NAVIGATION
   =================================================================== */
.navbar {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 860px;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--nav-border);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    transition: background 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
    transition: opacity 0.2s;
}

.nav-logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.82rem;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: 6px;
}

.nav-link {
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s, background 0.2s;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Theme Toggle */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--surface-border);
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s, transform 0.2s var(--ease-bounce);
}

.theme-toggle:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
    transform: scale(1.05);
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--surface-border);
    background: var(--surface);
    cursor: pointer;
    gap: 4px;
    padding: 0;
    transition: background 0.2s;
}

.mobile-menu-btn span {
    display: block;
    width: 16px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: transform 0.3s var(--ease), opacity 0.2s;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Overlay */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-panel {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-12px);
    width: calc(100% - 32px);
    max-width: 400px;
    background: var(--nav-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--nav-border);
    border-radius: 16px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--surface-shadow-lg);
    transition: transform 0.35s var(--ease-bounce), opacity 0.3s var(--ease);
    opacity: 0;
}

.mobile-menu-overlay.active .mobile-menu-panel {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.mobile-link {
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s, background 0.2s;
}

.mobile-link:hover {
    color: var(--text-primary);
    background: var(--pill-bg);
}

/* ===================================================================
   SECTIONS — SHARED
   =================================================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: var(--accent-light);
    margin-bottom: 14px;
}

.section-title {
    font-size: clamp(1.7rem, 4vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 10px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 480px;
    margin: 0 auto;
}

/* ---------- Window Chrome (macOS Bar) ---------- */
.window-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 18px;
    border-bottom: 1px solid var(--surface-border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.window-dots {
    display: flex;
    gap: 7px;
}

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

.dot-red { background: var(--dot-red); }
.dot-yellow { background: var(--dot-yellow); }
.dot-green { background: var(--dot-green); }

.window-title {
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--text-tertiary);
    flex: 1;
    text-align: center;
}

.window-spacer {
    width: 51px; /* balance for dots */
}

/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero {
    padding-top: 130px;
    padding-bottom: 60px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-window {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--surface-shadow-lg);
    overflow: hidden;
    animation: fadeInUp 0.7s var(--ease) both;
    transition: background 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.hero-content {
    padding: 48px 48px 56px;
}

.hero-badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    margin-bottom: 24px;
}

.greeting {
    display: block;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 4px;
    letter-spacing: 0;
}

.hero-name {
    font-size: clamp(2.2rem, 5.5vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 14px;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.08rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 20px;
}

.hero-bio {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 32px;
}

.hero-bio strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 12px;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s var(--ease-bounce), box-shadow 0.2s;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 12px rgba(0, 113, 227, 0.25);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px rgba(0, 113, 227, 0.3);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--surface-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--surface-hover);
}

.btn-github {
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 14px 28px;
    border-radius: 14px;
    font-size: 0.95rem;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
}

.btn-github:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

.btn-github:active {
    transform: translateY(0) scale(0.98);
}

/* ===================================================================
   SKILLS SECTION
   =================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.skill-card {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 28px 26px;
    box-shadow: var(--surface-shadow);
    transition: transform 0.3s var(--ease-bounce), box-shadow 0.3s var(--ease), background 0.4s var(--ease), border-color 0.4s var(--ease);
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--surface-shadow-lg);
}

.skill-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.skill-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.skill-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.skill-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--pill-text);
    background: var(--pill-bg);
    border: 1px solid var(--pill-border);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.pill:hover {
    background: var(--accent-light);
    color: var(--accent);
    border-color: transparent;
}

/* ===================================================================
   PROJECTS SECTION
   =================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--surface-shadow);
    overflow: hidden;
    transition: transform 0.35s var(--ease-bounce), box-shadow 0.35s var(--ease), background 0.4s var(--ease), border-color 0.4s var(--ease);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--surface-shadow-lg);
}

.project-window-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--surface-border);
}

.project-body {
    padding: 30px 28px 32px;
}

.project-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.project-name {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.project-type {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 14px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 18px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 22px;
}

.tag {
    display: inline-flex;
    padding: 4px 11px;
    border-radius: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--tag-text);
    background: var(--tag-bg);
    letter-spacing: 0.02em;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent);
    padding: 8px 0;
    transition: gap 0.2s var(--ease);
}

.project-link:hover {
    gap: 10px;
}

.project-link svg {
    transition: transform 0.2s var(--ease);
}

.project-link:hover svg {
    transform: translate(2px, -2px);
}

/* ===================================================================
   CONTACT SECTION
   =================================================================== */
.contact {
    padding-bottom: 60px;
}

.contact-window {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--surface-shadow-lg);
    overflow: hidden;
    max-width: 600px;
    margin: 0 auto;
    transition: background 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.contact-content {
    padding: 48px 40px 52px;
    text-align: center;
}

.contact-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 10px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 28px;
}

/* ===================================================================
   FOOTER
   =================================================================== */
.footer {
    position: relative;
    z-index: 1;
    padding: 28px 0;
    border-top: 1px solid var(--surface-border);
}

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

.footer p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.footer-github {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    color: var(--text-tertiary);
    transition: color 0.2s, background 0.2s;
}

.footer-github:hover {
    color: var(--text-primary);
    background: var(--pill-bg);
}

/* ===================================================================
   ANIMATIONS
   =================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll-triggered reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.19s; }

.reveal-stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Custom Additions for Exp 7 */
.responsive-exp7-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
}

/* ================= OVERHAUL: ARCH ASTRONOMER THEME ================= */
/* Light Mode Ext. (Parchment & Brass) */
:root {
    --bg-primary: #f8f6f0;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0ead8;
    --surface: rgba(255, 255, 255, 0.85);
    --surface-hover: rgba(255, 248, 235, 0.95);
    --surface-border: rgba(184, 153, 56, 0.25);
    --surface-shadow: 0 8px 32px rgba(138, 115, 42, 0.08), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
    
    --text-primary: #1e253c; /* Midnight Blue Ink */
    --text-secondary: #4a5578;
    --text-tertiary: #7181a1;
    --text-inverse: #fdfdfc;

    --accent: #a58117; /* Antiqued Brass */
    --accent-light: rgba(165, 129, 23, 0.15);
    --accent-hover: #7b5f0f;

    --blob-1: rgba(165, 129, 23, 0.12); 
    --blob-2: rgba(30, 37, 60, 0.08);  
    --blob-3: rgba(138, 150, 180, 0.15); 

    --pill-bg: rgba(165, 129, 23, 0.1);
    --pill-border: rgba(165, 129, 23, 0.3);
    --pill-text: #1e253c;
    --tag-bg: rgba(30, 37, 60, 0.1);
    --tag-text: #1e253c;

    /* Theme Vars */
    --bg-gradient: radial-gradient(circle at 50% 0%, #fdfcf9 0%, #ede6d5 60%);
    --body-bg: #ede6d5;
    --card-gradient: linear-gradient(180deg, var(--surface) 0%, rgba(220, 205, 170, 0.3) 100%);
    --title-gradient: linear-gradient(135deg, #1e253c, #a58117, #856510);
    --section-title-gradient: linear-gradient(90deg, #856510, #1e253c);
    --btn-gradient: linear-gradient(135deg, #1e253c, #2b3658);
    --btn-text: #ffffff;
    --hero-name-shadow: 0 2px 20px rgba(165, 129, 23, 0.15);
    --logo-shadow: 0 0 20px rgba(165, 129, 23, 0.2);
    --card-hover-border: rgba(165, 129, 23, 0.5);
    --card-hover-shadow: 0 8px 30px rgba(0, 0, 0, 0.06), 0 0 20px rgba(165, 129, 23, 0.15);
    --greeting-color: #a58117;
}

/* Dark Mode Ext. (Cosmos & Gold) */
[data-theme="dark"] {
    --bg-primary: #040914;
    --bg-secondary: #0a0f25;
    --bg-tertiary: #101633;
    --surface: rgba(18, 24, 46, 0.75);
    --surface-hover: rgba(28, 38, 70, 0.85);
    --surface-border: rgba(212, 175, 55, 0.15); 
    --surface-shadow: 0 8px 32px rgba(0, 0, 0, 0.8), inset 0 0 0 1px rgba(255, 230, 130, 0.12);
    
    --text-primary: #f0f4ff;
    --text-secondary: #abc4ff;
    --text-tertiary: #5e77b6;
    --text-inverse: #040914;

    --accent: #d4af37; 
    --accent-light: rgba(212, 175, 55, 0.15);
    --accent-hover: #f0d06a;

    --blob-1: rgba(99, 102, 241, 0.12); 
    --blob-2: rgba(212, 175, 55, 0.1);  
    --blob-3: rgba(192, 132, 252, 0.1); 

    --pill-bg: rgba(212, 175, 55, 0.08);
    --pill-border: rgba(212, 175, 55, 0.2);
    --pill-text: #e0e7ff;
    --tag-bg: rgba(99, 102, 241, 0.12);
    --tag-text: #a5b4fc;

    /* Theme Vars */
    --bg-gradient: radial-gradient(circle at 50% 0%, #1a163a 0%, #040914 60%);
    --body-bg: #040914;
    --card-gradient: linear-gradient(180deg, var(--surface) 0%, rgba(10, 15, 37, 0.6) 100%);
    --title-gradient: linear-gradient(135deg, #ffffff, #d4af37, #ffd700);
    --section-title-gradient: linear-gradient(90deg, #d4af37, #fdf4d4);
    --btn-gradient: linear-gradient(135deg, #d4af37, #9b7d1d);
    --btn-text: #000000;
    --hero-name-shadow: 0 2px 40px rgba(212, 175, 55, 0.3);
    --logo-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
    --card-hover-border: rgba(212, 175, 55, 0.4);
    --card-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.9), 0 0 30px rgba(212, 175, 55, 0.15);
    --greeting-color: #ffd700;
}

body {
    background-image: var(--bg-gradient);
    background-color: var(--body-bg);
}

/* Typography Enhancements */
h1, h2, h3, .window-title, .logo-icon, .greeting {
    font-family: 'Cinzel', serif !important;
    letter-spacing: 0.03em;
}

.hero-name {
    background: var(--title-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: var(--hero-name-shadow);
    margin-bottom: 0.5rem;
}

.greeting {
    display: block;
    font-size: 1.5rem;
    color: var(--greeting-color);
    margin-bottom: -10px;
    opacity: 0.85;
}

/* Layout Centering */
.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-subtitle {
    color: var(--text-secondary);
    display: block;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.hero-bio {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    background: var(--section-title-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Celestial Elements */
.blob {
    filter: blur(90px);
}

.nav-logo .logo-icon {
    background: var(--btn-gradient);
    color: var(--btn-text);
    box-shadow: var(--logo-shadow);
    border: none;
}

/* Project Cards */
.project-card {
    border: 1px solid var(--surface-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--card-gradient);
    box-shadow: var(--surface-shadow);
}

.project-card:hover {
    border-color: var(--card-hover-border);
    box-shadow: var(--card-hover-shadow);
}

.project-window-bar {
    border-bottom: 1px solid var(--surface-border);
}

.btn-primary {
    background: var(--btn-gradient);
    color: var(--btn-text);
    box-shadow: var(--logo-shadow);
    border: none;
}
.btn-primary:hover {
    box-shadow: var(--card-hover-shadow);
    transform: translateY(-2px);
}

/* ===================================================================
   RESPONSIVENESS (MEDIA QUERIES)
   =================================================================== */

/* Tablet */
@media (max-width: 900px) {
    .skills-grid {
        grid-template-columns: 1fr 1fr;
    }

    .skills-grid .skill-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        justify-self: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        max-width: 520px;
        margin: 0 auto;
    }

    .hero-content {
        padding: 36px 32px 44px;
    }
}

/* Mobile */
@media (max-width: 640px) {
    .navbar {
        top: 8px;
        width: calc(100% - 20px);
        border-radius: 14px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-logo span {
        font-size: 0.85rem;
    }

    .hero {
        padding-top: 100px;
        min-height: auto;
        padding-bottom: 40px;
    }

    .hero-content {
        padding: 28px 22px 36px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        justify-content: center;
    }

    section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 36px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid .skill-card:last-child {
        max-width: none;
    }

    .contact-content {
        padding: 32px 24px 38px;
    }

    .container {
        padding: 0 16px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Small height / landscape */
@media (max-height: 700px) {
    .hero {
        min-height: auto;
        padding-top: 110px;
    }
}