:root {
    --font-family: 'JetBrains Mono', monospace;

    /* Neutral fallbacks (overridden by theme classes) */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #c81d25;
    --accent-rgb: 200,29,37;

    /* RGB counterparts for fine-grained rgba(...) usage */
    --bg-primary-rgb: 13,17,23;
    --bg-secondary-rgb: 22,27,34;
    --text-primary-rgb: 201,209,217;
    --text-secondary-rgb: 139,148,158;

    /* terminal button defaults (can be themed) */
    --terminal-btn-close-rgb: 255,95,86;
    --terminal-btn-minimize-rgb: 255,189,46;
    --terminal-btn-maximize-rgb: 39,201,63;

    --nav-bg: rgba(255,255,255,0.02);
    --nav-border: rgba(255,255,255,0.04);
    --bg-gradient: none;
    --hero-glow-opacity: 0.08;
    --terminal-bg: rgba(10,10,12,0.9);
    --terminal-header-bg: linear-gradient(180deg, rgba(0,0,0,0.18), rgba(0,0,0,0.06));
    --terminal-border: rgba(255,255,255,0.06);
}

/* Dark theme (default) */
.theme-dark {
    --bg-primary: #0b0d0f;
    --bg-secondary: #0f1113;
    --text-primary: #f7f7f7;
    --text-secondary: #bdb0b0;
    --accent: #c81d25;
    --accent-rgb: 200,29,37;
    --bg-primary-rgb: 11,13,15;
    --bg-secondary-rgb: 15,17,19;
    --text-primary-rgb: 247,247,247;
    --text-secondary-rgb: 189,176,176;
    --terminal-btn-close-rgb: 255,95,86;
    --terminal-btn-minimize-rgb: 255,189,46;
    --terminal-btn-maximize-rgb: 39,201,63;
    --nav-bg: rgba(255,255,255,0.02);
    --nav-border: rgba(255,255,255,0.04);
    --bg-gradient: radial-gradient(1200px circle at 10% 10%, rgba(var(--accent-rgb),0.06), transparent 6%), radial-gradient(800px circle at 90% 80%, rgba(var(--accent-rgb),0.04), transparent 12%);
    --hero-glow-opacity: 0.10;
    --terminal-bg: rgba(10,10,12,0.92);
    --terminal-header-bg: linear-gradient(180deg, rgba(0,0,0,0.2), rgba(0,0,0,0.08));
    --terminal-border: rgba(var(--accent-rgb),0.12);
}

/* Light theme */
.theme-light {
    --bg-primary: #ffffff;
    --bg-secondary: #fbf7f7;
    --text-primary: #0b0b0b;
    --text-secondary: #5a3030;
    --accent: #b30f10;
    --accent-rgb: 179,15,16;
    --bg-primary-rgb: 255,255,255;
    --bg-secondary-rgb: 251,247,247;
    --text-primary-rgb: 11,11,11;
    --text-secondary-rgb: 90,48,48;
    --terminal-btn-close-rgb: 179,15,16;
    --terminal-btn-minimize-rgb: 255,189,46;
    --terminal-btn-maximize-rgb: 39,201,63;
    --nav-bg: rgba(255,255,255,0.7);
    --nav-border: rgba(179,15,16,0.12);
    --bg-gradient: radial-gradient(1000px circle at 10% 10%, rgba(var(--accent-rgb),0.03), transparent 8%), radial-gradient(600px circle at 85% 85%, rgba(var(--accent-rgb),0.02), transparent 12%);
    --hero-glow-opacity: 0.06;
    --terminal-bg: linear-gradient(180deg, rgba(var(--bg-primary-rgb),1), rgba(var(--bg-secondary-rgb),1));
    --terminal-header-bg: linear-gradient(180deg, rgba(var(--bg-primary-rgb),0.95), rgba(var(--bg-primary-rgb),0.98));
    --terminal-border: rgba(var(--accent-rgb),0.06);
    --muted-rgb: 107,75,75;
    --muted-2-rgb: 138,90,90;
    --muted: rgba(var(--muted-rgb),1);
    --muted-2: rgba(var(--muted-2-rgb),1);
}

/* Smoothly transition between themeable surfaces */
:root, body, .card, .centered-nav, .menu-link, .nav-link {
    transition: background-color 220ms ease, color 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

* {
    font-family: var(--font-family);
    box-sizing: border-box;
}

::-webkit-scrollbar {width: 4px;}
::-webkit-scrollbar-track {background: var(--bg-secondary);}
::-webkit-scrollbar-thumb {background: var(--accent); border-radius: 10px;}
::-webkit-scrollbar-thumb:hover {background: var(--accent);} 

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    position:relative;
}

.name-logo {
    position: relative;
    transition: all 0.3s ease;
}

.name-logo:hover {
    animation: glitch 0.3s ;
}

/* Hero section background decorations */
.hero-bg {
    position: relative;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: var(--hero-glow-opacity);
    top: -20vw;
    right: -20vw;
    border-radius: 50%;
    animation: float 15s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    width: 30vw;
    height: 30vw;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: calc(var(--hero-glow-opacity) * 0.85);
    bottom: -15vw;
    left: -15vw;
    border-radius: 50%;
    animation: float 20s ease-in-out infinite reverse;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(30px, 30px) rotate(180deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .mobile-nav .nav-link {
        font-size: 1.5rem;
        margin: 1rem 0;
    }
}

.nav-link {
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

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

.card {
    background: linear-gradient(180deg, rgba(0,0,0,0.02), transparent), var(--bg-secondary);
    border: 1px solid rgba(var(--accent-rgb), 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(var(--accent-rgb), 0.03), transparent);
    transition: 0.5s;
}

.card:hover::before {
    left: 100%;
}

@media (hover: hover) {
    .card:hover {
        transform: translateY(-5px) scale(1.02);
        box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    }
}

.gradient-text {
    background: linear-gradient(45deg, var(--accent), rgba(var(--accent-rgb),0.8));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient 8s ease infinite;
    background-size: 200% 200%;
}

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

.terminal-text {
    font-family: 'Share Tech Mono', monospace;
    color: var(--text-primary);
}

/* Terminal window*/
.terminal-window {
    background: var(--nav-bg);
    border: 1px solid var(--nav-border);
    border-radius: 12px;
    backdrop-filter: blur(10px) saturate(120%);
    -webkit-backdrop-filter: blur(10px) saturate(120%);
    box-shadow: 0 8px 30px rgba(2,6,23,0.45);
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    transition: transform 220ms ease, box-shadow 220ms ease, background-color 220ms ease;
}

.terminal-window:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(2,6,23,0.30); }

.terminal-header {
    background: linear-gradient(180deg, rgba(var(--bg-secondary-rgb),0.04), rgba(var(--bg-secondary-rgb),0.02));
    padding: 16px 24px;
    border-bottom: 1px solid var(--nav-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--accent);
}

.theme-dark .terminal-window {
    box-shadow: 0 8px 18px rgba(2,6,23,0.45), 0 2px 6px rgba(var(--accent-rgb),0.03);
}

.terminal-buttons .terminal-button {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: inline-block;
}

.text-accent { color: var(--accent); }

.theme-light .bg-gray-800 { background-color: var(--bg-secondary) !important; }
.theme-light .text-gray-200 { color: var(--text-primary) !important; }
.theme-light .text-gray-300 { color: var(--text-secondary) !important; }
.theme-light .text-gray-400 { color: var(--text-secondary) !important; }
.theme-light .text-gray-500 { color: rgba(var(--text-secondary-rgb),0.9) !important; }
.theme-light .shadow-lg { box-shadow: 0 8px 24px rgba(var(--accent-rgb),0.04) !important; }

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.9rem;
    border-radius: 10px;
    background: linear-gradient(90deg, rgba(var(--accent-rgb),0.10), rgba(var(--accent-rgb),0.04));
    color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb),0.14);
    font-weight: 700;
    text-decoration: none;
    transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}
.view-all-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(var(--accent-rgb),0.06); }

.social-link {
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

.social-link:hover {
    color: var(--accent);
    transform: translateY(-3px) scale(1.1);
}

.social-link::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s ease;
}

.social-link:hover::before {
    transform: scale(1.5);
    opacity: 0.1;
}

.centered-nav {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 60;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 8px 14px;
    border-radius: 12px;
    background: var(--nav-bg);
    border: 1px solid var(--nav-border);
    backdrop-filter: blur(10px) saturate(120%);
    -webkit-backdrop-filter: blur(10px) saturate(120%);
    box-shadow: 0 8px 30px rgba(2,6,23,0.45);
}

.centered-nav:hover { transform: translateX(-50%) translateY(-2px); box-shadow: 0 12px 34px rgba(2,6,23,0.55); }

.nav-links-container { display:flex; gap:0.85rem; align-items:center; }
.nav-link { padding:6px 10px; border-radius:8px; text-transform:lowercase; font-weight:600; color:var(--text-secondary); }
.nav-link:hover { background: rgba(var(--accent-rgb),0.06); color:var(--accent); }
.nav-link.active { color:var(--accent); background: rgba(var(--accent-rgb),0.08); box-shadow: 0 6px 18px rgba(var(--accent-rgb),0.06); }

.theme-toggle { background: transparent; border: none; color: var(--text-secondary); font-size: 1.05rem; padding:6px; cursor:pointer; }

/* mobile-only helpers: hidden by default, enabled in small viewports */
.mobile-only { display: none; }

/* Site loader styles */
.site-loader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    transition: opacity 300ms ease, visibility 300ms ease;
}
.site-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.site-loader .loader-inner { display: flex; flex-direction: column; gap: 12px; align-items: center; }
.site-loader .loader-text { color: var(--text-primary); font-weight: 700; letter-spacing: 0.06em; text-transform: lowercase; }
.spinner {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 6px solid rgba(255,255,255,0.08);
    border-top-color: rgba(var(--accent-rgb),1);
    animation: spin 1s linear infinite;
    box-shadow: 0 6px 18px rgba(0,0,0,0.4);
}
@keyframes spin { to { transform: rotate(360deg); } }

.theme-light .site-loader { background: rgba(255,255,255,0.85); }
.theme-light .spinner { border-color: rgba(0,0,0,0.06); border-top-color: rgba(var(--accent-rgb),1); }

/* Mobile compact controls: hide desktop links and show only home + theme toggle */
@media (max-width: 768px) {
    .nav-links-container { display: none; }
    .centered-nav { padding: 6px 10px; gap: 0.5rem; top: 12px; }
    .mobile-only { display: inline-flex; align-items: center; gap: .5rem; color: var(--text-secondary); font-weight: 700; text-transform: lowercase; }
    .mobile-only:hover { color: var(--accent); }
    #theme-toggle { display: none; }
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

/* Fade in animation for sections */
section {
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}


/* Responsive Typography */
@media (max-width: 640px) {
    h1 {
        font-size: 2rem !important;
    }
    h2 {
        font-size: 1.75rem !important;
    }
    h3 {
        font-size: 1.25rem !important;
    }
    p {
        font-size: 0.875rem !important;
    }
}

/* Tablet Typography */
@media (min-width: 641px) and (max-width: 1024px) {
    h1 {
        font-size: 2.75rem !important;
    }
    h2 {
        font-size: 2.25rem !important;
    }
    h3 {
        font-size: 1.5rem !important;
    }
    p {
        font-size: 1rem !important;
    }
}

/* Responsive Spacing */
@media (max-width: 640px) {
    section {
        padding: 2rem 1rem !important;
    }
    .card {
        padding: 1rem !important;
        margin: 0.5rem 0 !important;
    }
    .container {
        padding: 0 1rem;
    }
}

/* Tablet Spacing */
@media (min-width: 641px) and (max-width: 1024px) {
    section {
        padding: 3rem 2rem !important;
    }
    .card {
        padding: 1.5rem !important;
    }
    .container {
        padding: 0 2rem;
    }
}

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
    object-fit: cover;
}

/* Touch Device Optimizations */
@media (hover: none) {
    .card:active {
        transform: scale(0.98);
    }
    
    .nav-link:active {
        color: var(--accent);
    }
}

/* Grid Adjustments */
@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr !important;
    }
}

/* Loading State */
.loading {
    opacity: 0;
    position: relative;
    transition: opacity 0.3s ease-in;
}

.loaded {
    opacity: 1;
}