/* =========================================================================
   Madan Singh - Premium Developer Portfolio Stylesheet
   - Typography: Outfit (Headings), Inter (Body), Fira Code (Monospace)
   - Layout: CSS Grid, Flexbox, Mobile-First
   - Themes: Modern Glassmorphic Dark (Default) & Light Theme support
   - Animations: Hardware-accelerated transitions, custom scroll-reveals
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. Design Tokens & CSS Variables
   ------------------------------------------------------------------------- */
:root {
    /* Fonts */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Theme-independent Colors */
    --tech-c: #3178c6;
    --tech-cpp: #00599c;
    --tech-html: #e34c26;
    --tech-css: #264de4;
    --tech-git: #f05032;
    --tech-linux: #fcc624;
    --tech-python: #3776ab;
    --tech-gemini: #a855f7;
    --tech-java: #b07219;
    --tech-javascript: #f7df1e;
    --tech-php: #777bb4;
    --tech-vscode: #007acc;
    --tech-eclipse: #2c2255;
    --tech-ai: #10b981;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 5rem;

    /* Border Radius */
    --radius-xs: 6px;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --radius-pill: 9999px;

    /* Default: Modern Dark Theme Colors (Glassmorphic + Deep Neumorphic) */
    --bg-main: #0b0f19;
    --bg-sub: #070a10;
    --card-surface: rgba(17, 24, 39, 0.7);
    --card-border: rgba(255, 255, 255, 0.05);
    --card-border-glow: rgba(0, 242, 254, 0.12);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --accent-primary: #00f2fe;     /* Cyber Cyan */
    --accent-secondary: #a855f7;   /* Violet Spark */
    --accent-glow: rgba(0, 242, 254, 0.2);
    
    /* Neumorphic Shadows for Dark Mode */
    --neu-raised: 8px 8px 20px #040508, -8px -8px 20px #1a2233;
    --neu-inset: inset 6px 6px 12px #040508, inset -6px -6px 12px #1a2233;
    --neu-raised-sm: 4px 4px 10px #040508, -4px -4px 10px #1a2233;
    --neu-inset-sm: inset 3px 3px 8px #040508, inset -3px -3px 8px #1a2233;

    /* Standard Shadows */
    --shadow-sm: 0 2px 8px -2px rgba(0,0,0,0.5);
    --shadow-md: 0 8px 24px -4px rgba(0,0,0,0.6);
    --shadow-lg: 0 16px 48px -8px rgba(0,0,0,0.8);
    --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.15);

    /* Durations & Easing */
    --transition-speed: 0.3s;
    --transition-speed-fast: 0.15s;
    --transition-ease: cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Layout */
    --max-width: 1200px;
}

/* Light Theme Variables (Off-White Neumorphism as requested) */
:root[data-theme="light"] {
    --bg-main: #f1f5f9;  /* Soft off-white slate gray */
    --bg-sub: #e2e8f0;
    --card-surface: #f1f5f9;
    --card-border: rgba(255, 255, 255, 0.6);
    --card-border-glow: rgba(99, 102, 241, 0.05);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-primary: #8b5cf6;     /* Vibrant Violet from user's photos */
    --accent-secondary: #3b82f6;   /* Royal Blue */
    --accent-glow: rgba(139, 92, 246, 0.15);

    /* Neumorphic Shadows for Light Mode */
    --neu-raised: 8px 8px 18px #cbd5e1, -8px -8px 18px #ffffff;
    --neu-inset: inset 6px 6px 12px #cbd5e1, inset -6px -6px 12px #ffffff;
    --neu-raised-sm: 4px 4px 10px #cbd5e1, -4px -4px 10px #ffffff;
    --neu-inset-sm: inset 3px 3px 8px #cbd5e1, inset -3px -3px 8px #ffffff;

    --shadow-sm: 0 2px 8px -2px rgba(99,102,241,0.05);
    --shadow-md: 0 8px 24px -4px rgba(99,102,241,0.08);
    --shadow-lg: 0 16px 48px -8px rgba(99,102,241,0.12);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.08);
}

/* -------------------------------------------------------------------------
   2. Reset & Global Styles
   ------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden; /* Prevent horizontal scroll at root level */
}

/* Ensure no element ever overflows horizontally */
img, video, canvas, iframe, svg {
    max-width: 100%;
    height: auto;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
}

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

/* Page Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-main);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

#preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.preloader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(139, 92, 246, 0.1);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin-preloader 1s linear infinite;
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
}

.preloader-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.preloader-text {
    font-family: var(--font-mono);
    font-size: 0.850rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

@keyframes spin-preloader {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-speed-fast) var(--transition-ease);
}

input, textarea, button {
    font-family: inherit;
    color: inherit;
}

code, pre {
    font-family: var(--font-mono);
}

/* -------------------------------------------------------------------------
   3. Layout Components & Grid
   ------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(1rem, 5vw, 1.5rem); /* Safe edge gap on all screens */
}

.section {
    padding: var(--space-xxl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 1;
}

.section-tag {
    font-family: var(--font-mono);
    color: var(--accent-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-xs);
    display: inline-block;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.section-title::after {
    content: '';
    display: block;
    height: 2px;
    flex-grow: 1;
    background: linear-gradient(90deg, var(--card-border), transparent);
    margin-left: var(--space-sm);
}

/* -------------------------------------------------------------------------
   4. Scroll Reveal Classes
   ------------------------------------------------------------------------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s var(--transition-ease),
                transform 0.8s var(--transition-ease);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* -------------------------------------------------------------------------
   5. Glassmorphic Drawer Navigation Bar
   ------------------------------------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    background-color: rgba(11, 15, 25, 0.28);
    border-bottom: 1px solid var(--card-border);
    transition: background-color var(--transition-speed) var(--transition-ease),
                border-color var(--transition-speed) var(--transition-ease);
}

:root[data-theme="light"] .navbar {
    background-color: rgba(241, 245, 249, 0.28);
}

.nav-container {
    height: 100%;
    display: flex;
    justify-content: flex-end; /* Align controls to the right since logo is removed */
    align-items: center;
}

/* Overlay backdrop for drawer */
.nav-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

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

/* Nav links drawer layout (Always active on all screen sizes) */
.nav-links {
    position: fixed;
    top: 0;
    right: -340px; /* Hidden by default */
    width: min(320px, 85vw); /* Responsive width, never exceeds 85% of screen */
    height: 100vh;
    background-color: var(--bg-sub);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border-left: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    list-style: none;
    gap: var(--space-xs);
    box-shadow: var(--neu-raised);
    z-index: 1001;
    padding: var(--space-xxl) 0;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links.active {
    right: 0;
}

.nav-links li {
    width: 100%;
    text-align: center;
}

.nav-links a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px var(--space-md);
    border-left: 3px solid transparent;
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-primary);
    background-color: rgba(139, 92, 246, 0.06);
    border-left-color: var(--accent-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 1002; /* Float above everything including drawer */
}

/* Theme Toggle Button (Neumorphic Style) */
.theme-toggle-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    box-shadow: var(--neu-raised-sm);
    transition: background-color var(--transition-speed-fast) var(--transition-ease),
                border-color var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease),
                transform var(--transition-speed-fast) var(--transition-ease);
}

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

.theme-toggle-btn:active {
    transform: translateY(0);
    box-shadow: var(--neu-inset-sm);
}

.theme-toggle-btn .fa-sun {
    display: none;
}

:root[data-theme="light"] .theme-toggle-btn .fa-moon {
    display: none;
}

:root[data-theme="light"] .theme-toggle-btn .fa-sun {
    display: block;
}

/* Mobile Nav Toggle (Neumorphic Style) */
.nav-mobile-btn {
    display: flex; /* Always display */
    flex-direction: column;
    justify-content: space-between;
    width: 44px;
    height: 44px;
    padding: 13px 10px; /* Space out hamburger lines */
    border-radius: var(--radius-sm);
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    cursor: pointer;
    box-shadow: var(--neu-raised-sm);
    transition: background-color var(--transition-speed-fast) var(--transition-ease),
                border-color var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease),
                transform var(--transition-speed-fast) var(--transition-ease);
}

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

.nav-mobile-btn:active {
    transform: translateY(0);
    box-shadow: var(--neu-inset-sm);
}

.nav-mobile-btn span {
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform var(--transition-speed-fast) var(--transition-ease),
                opacity var(--transition-speed-fast) var(--transition-ease);
}

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

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

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

/* -------------------------------------------------------------------------
   6. Hero Section & Terminal Mockup
   ------------------------------------------------------------------------- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: var(--space-xl);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.hero-badge {
    align-self: flex-start;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    background-color: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    font-family: var(--font-mono);
    font-size: 0.813rem;
    color: var(--accent-primary);
}

.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-name span {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-typing {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 500;
    color: var(--text-secondary);
    min-height: 2.2rem;
}

.hero-typing span {
    border-right: 2px solid var(--accent-primary);
    animation: blink 0.75s step-end infinite;
    padding-right: 4px;
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1.063rem;
    max-width: 500px;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.938rem;
    cursor: pointer;
    box-shadow: var(--neu-raised-sm);
    transition: transform var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease),
                background-color var(--transition-speed-fast) var(--transition-ease),
                border-color var(--transition-speed-fast) var(--transition-ease);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: var(--neu-inset-sm);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #07090e;
    border: none;
    box-shadow: 0 4px 14px var(--card-border-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.02);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.hero-socials {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-sm);
}

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

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

/* Terminal Mockup */
.terminal-window {
    background-color: #05070a;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 380px;
    font-family: var(--font-mono);
    font-size: 0.813rem;
    text-align: left;
}

.terminal-header {
    height: 36px;
    background-color: #0c0e14;
    border-bottom: 1px solid #141822;
    display: flex;
    align-items: center;
    padding: 0 var(--space-sm);
    position: relative;
}

.terminal-buttons {
    display: flex;
    gap: 6px;
}

.terminal-buttons span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: block;
}

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

.terminal-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.terminal-body {
    flex-grow: 1;
    padding: var(--space-sm);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: #e2e8f0;
}

.terminal-line {
    line-height: 1.4;
    white-space: pre-wrap;
    word-break: break-all;
}

.input-echo-line .prompt {
    color: #10b981;
    font-weight: bold;
    margin-right: var(--space-xs);
}

.system-line {
    color: var(--text-muted);
}

.json-key { color: #f43f5e; }
.json-val { color: #38bdf8; }
.json-num { color: #fbbf24; }

.text-red { color: #ef4444; }
.text-yellow { color: #eab308; }
.text-green { color: #10b981; }

.accent-text {
    color: var(--accent-primary);
    font-weight: 600;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    padding: var(--space-sm);
    background-color: #05070a;
    border-top: 1px solid #0c0e14;
}

.terminal-input-line .prompt {
    color: #10b981;
    font-weight: bold;
    margin-right: 8px;
    white-space: nowrap;
}

#terminal-input {
    flex-grow: 1;
    background: transparent;
    border: none;
    outline: none;
    caret-color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.813rem;
    color: #e2e8f0;
}

/* Blink Animation */
@keyframes blink {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-primary); }
}



/* -------------------------------------------------------------------------
   7. About Me & Academic Stats
   ------------------------------------------------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: flex-start;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.063rem;
}

.about-text p b {
    color: var(--text-primary);
}

/* Stats dashboard */
.stats-dashboard {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--neu-raised);
    box-sizing: border-box;
    width: 100%;
}

.stats-meters-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.stat-radial-meter {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-xs);
}

.svg-container {
    position: relative;
    width: 100px;
    height: 100px;
}

.svg-container svg {
    width: 100px;
    height: 100px;
    transform: rotate(-90deg);
}

.bg-circle {
    fill: none;
    stroke: var(--bg-sub);
    stroke-width: 6;
}

.progress-circle {
    fill: none;
    stroke: var(--accent-primary);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 251.2;
    stroke-dashoffset: 251.2;
    transition: stroke-dashoffset 1.5s var(--transition-ease);
}

.progress-circle.secondary {
    stroke: var(--accent-secondary);
}

.stat-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

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

/* GitHub Contribution Widget */
.github-widget {
    border-top: 1px solid var(--card-border);
    padding-top: var(--space-md);
}

.github-widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.github-title {
    font-family: var(--font-mono);
    font-size: 0.813rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.github-title i {
    color: var(--text-primary);
}

.github-stats-summary {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.github-graph-container {
    position: relative;
    width: 100%;
}

.github-grid-scroll {
    overflow-x: auto;
    scrollbar-width: none; /* Firefox */
}

.github-grid-scroll::-webkit-scrollbar {
    display: none; /* Safari/Chrome */
}

.github-grid {
    display: grid;
    grid-template-rows: repeat(7, 10px);
    grid-auto-flow: column;
    grid-auto-columns: 10px;
    gap: 3px;
    padding-bottom: var(--space-xs);
}

.grid-cell {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background-color: var(--bg-sub);
    transition: background-color var(--transition-speed-fast) var(--transition-ease);
}

:root[data-theme="dark"] .grid-cell.level-0 { background-color: #161b22; }
:root[data-theme="dark"] .grid-cell.level-1 { background-color: #0e4429; }
:root[data-theme="dark"] .grid-cell.level-2 { background-color: #006d32; }
:root[data-theme="dark"] .grid-cell.level-3 { background-color: #26a641; }
:root[data-theme="dark"] .grid-cell.level-4 { background-color: #39d353; }

:root[data-theme="light"] .grid-cell.level-0 { background-color: #ebedf0; }
:root[data-theme="light"] .grid-cell.level-1 { background-color: #9be9a8; }
:root[data-theme="light"] .grid-cell.level-2 { background-color: #40c463; }
:root[data-theme="light"] .grid-cell.level-3 { background-color: #30a14e; }
:root[data-theme="light"] .grid-cell.level-4 { background-color: #216e39; }

/* Custom Tooltip inside calendar */
.github-tooltip {
    position: absolute;
    background-color: #090d16;
    color: #fff;
    padding: 6px 10px;
    border-radius: var(--radius-xs);
    font-size: 0.688rem;
    font-family: var(--font-mono);
    pointer-events: none;
    z-index: 10;
    border: 1px solid var(--card-border);
    transform: translateX(-50%);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.15s ease;
    box-shadow: var(--shadow-md);
}

.github-legend {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
    font-size: 0.688rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.github-legend .grid-cell {
    margin: 0 2px;
}



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

.skills-category {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--neu-raised);
    transition: border-color var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.skills-category:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--neu-raised), 0 8px 24px var(--accent-glow);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    border-bottom: 1px solid var(--card-border);
    padding-bottom: var(--space-xs);
}

.category-title i {
    color: var(--accent-primary);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.skill-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 12px;
    background-color: var(--bg-sub);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    transition: transform var(--transition-speed-fast) var(--transition-ease),
                border-color var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease);
}

.skill-card:hover {
    transform: translateX(4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.skill-icon {
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--card-surface);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* Coloring brand icons specifically */
.skill-card:hover .skill-icon.c { color: var(--tech-c); }
.skill-card:hover .skill-icon.cpp { color: var(--tech-cpp); }
.skill-card:hover .skill-icon.html { color: var(--tech-html); }
.skill-card:hover .skill-icon.css { color: var(--tech-css); }
.skill-card:hover .skill-icon.git { color: var(--tech-git); }
.skill-card:hover .skill-icon.linux { color: var(--tech-linux); }
.skill-card:hover .skill-icon.python { color: var(--tech-python); }
.skill-card:hover .skill-icon.gemini { color: var(--tech-gemini); }
.skill-card:hover .skill-icon.java { color: var(--tech-java); }
.skill-card:hover .skill-icon.javascript { color: var(--tech-javascript); }
.skill-card:hover .skill-icon.php { color: var(--tech-php); }
.skill-card:hover .skill-icon.vscode { color: var(--tech-vscode); }
.skill-card:hover .skill-icon.eclipse { color: var(--tech-eclipse); }
.skill-card:hover .skill-icon.ai { color: var(--tech-ai); }

.skill-info {
    flex-grow: 1;
}

.skill-name {
    font-size: 0.938rem;
    font-weight: 600;
}

.skill-level-badge {
    font-family: var(--font-mono);
    font-size: 0.688rem;
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    background-color: var(--card-surface);
    color: var(--text-secondary);
    display: inline-block;
    margin-top: 2px;
}

/* -------------------------------------------------------------------------
   8b. Technical Profiles Section
   ------------------------------------------------------------------------- */
.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.profile-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.profile-card {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-xs);
    text-align: center;
    box-shadow: var(--neu-raised);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.profile-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--neu-raised), 0 8px 24px var(--accent-glow);
    border-color: var(--accent-primary);
}

.profile-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
    width: 48px;
    height: 48px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 50%;
    background-color: var(--bg-sub);
    box-shadow: var(--neu-inset-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s ease, color 0.4s ease;
}

.profile-card:hover .profile-icon {
    transform: scale(1.1) rotate(5deg);
}

.profile-icon.github { color: var(--text-primary); }
.profile-icon.leetcode { color: #f89f1b; } /* LeetCode orange */
.profile-icon.linkedin { color: #0a66c2; } /* LinkedIn blue */
.profile-icon.hackerrank { color: #2ec866; } /* HackerRank green */

.profile-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.profile-handle {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.profile-link-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s ease;
}

.profile-card:hover .profile-link-text {
    gap: 8px;
}

/* -------------------------------------------------------------------------
   9. Projects Section
   ------------------------------------------------------------------------- */
.projects-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.project-card-premium {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    box-shadow: var(--neu-raised);
    transition: transform var(--transition-speed) var(--transition-ease),
                border-color var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.project-card-premium:hover {
    transform: translateY(-6px);
    border-color: var(--accent-primary);
    box-shadow: var(--neu-raised), 0 10px 30px var(--accent-glow);
}

.project-card-premium.featured {
    border: 1px dashed var(--accent-primary);
    background: linear-gradient(135deg, var(--card-surface), rgba(0, 242, 254, 0.02));
}

.project-media-mock {
    background-color: var(--bg-sub);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--card-border);
    min-height: 250px;
    overflow: hidden;
}

/* Simulated UI Shell for project */
.ui-shell {
    width: 90%;
    height: 85%;
    background-color: #0c111d;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--neu-raised-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.ui-shell-header {
    height: 32px;
    background-color: #06090f;
    border-bottom: 1px solid var(--card-border);
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    align-items: center;
    padding: 0 12px;
}

.ui-dots {
    display: flex;
    gap: 6px;
}

.ui-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

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

.ui-address-bar {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    font-size: 0.688rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-align: center;
    padding: 2px 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    user-select: none;
}

.ui-shell-body {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-md);
}

.mock-status-pill {
    font-family: var(--font-mono);
    font-size: 0.688rem;
    padding: 4px 8px;
    border-radius: var(--radius-pill);
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #10b981;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.mock-status-pill.violet {
    background-color: rgba(168, 85, 247, 0.08);
    border-color: rgba(168, 85, 247, 0.2);
    color: #a855f7;
}

.mock-status-pill.yellow {
    background-color: rgba(251, 191, 36, 0.08);
    border-color: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}

.mock-status-pill.cyan {
    background-color: rgba(6, 182, 212, 0.08);
    border-color: rgba(6, 182, 212, 0.2);
    color: #06b6d4;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: currentColor;
    animation: mock-pulse 1.5s infinite;
}

@keyframes mock-pulse {
    0% { transform: scale(0.9); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.5; }
}

.project-brand-visual {
    font-size: 3.5rem;
    color: var(--accent-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.project-brand-visual.amazon {
    color: #ff9900;
}

.project-brand-visual.scam {
    color: #ef4444;
}

.project-brand-visual.evidence {
    color: #a855f7;
}

.project-brand-visual.detector {
    color: #06b6d4;
}

.visual-title {
    font-size: 0.813rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.project-details {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-md);
}

.project-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

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

.project-title-text {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
}

.project-desc-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

.project-tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background-color: var(--bg-sub);
    border: 1px solid var(--card-border);
    padding: 4px 10px;
    border-radius: var(--radius-xs);
    color: var(--text-secondary);
}

.project-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}



/* -------------------------------------------------------------------------
   10. Timeline / Learning Journey
   ------------------------------------------------------------------------- */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-lg) 0;
}

.timeline-line-art {
    position: absolute;
    top: 0;
    left: 30px;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary), transparent);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: var(--space-xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 21px;
    top: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--bg-main);
    border: 4px solid var(--accent-primary);
    z-index: 2;
    box-shadow: 0 0 10px var(--accent-primary);
    transition: transform var(--transition-speed) var(--transition-ease);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.25);
    background-color: var(--accent-primary);
}

.timeline-content {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.timeline-item:hover .timeline-content {
    border-color: var(--card-border-glow);
    box-shadow: var(--shadow-md);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.813rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-title-text {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.938rem;
}

/* -------------------------------------------------------------------------
   11. Achievements & Certifications
   ------------------------------------------------------------------------- */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.achievement-card {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed) var(--transition-ease),
                border-color var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.achievement-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.achievement-icon {
    font-size: 1.75rem;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.achievement-title {
    font-size: 1.125rem;
    font-weight: 700;
}

.achievement-issuer {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.achievement-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* -------------------------------------------------------------------------
   12. Contact API Request Panel
   ------------------------------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-heading {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.063rem;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.938rem;
    color: var(--text-secondary);
}

.contact-detail-item i {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-sub);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

/* Contact Form styling */
.contact-card {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--neu-raised);
    padding: var(--space-lg);
    transition: transform var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.contact-form-element {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: left;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input.neumorphic-input {
    background-color: var(--bg-sub);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 0.938rem;
    box-shadow: var(--neu-inset-sm);
    outline: none;
    transition: border-color var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease);
}

.form-input.neumorphic-input:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--neu-inset-sm), 0 0 10px var(--accent-glow);
}

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

.contact-status-block {
    min-height: 24px;
    text-align: left;
}

.status-msg {
    font-size: 0.875rem;
    font-family: var(--font-mono);
    display: none;
}

.status-msg.sending {
    display: block;
    color: var(--accent-primary);
}

.status-msg.success {
    display: block;
    color: #10b981;
}

.status-msg.error {
    display: block;
    color: #ef4444;
}

.neumorphic-btn {
    align-self: flex-start;
    box-shadow: var(--neu-raised-sm);
    transition: transform var(--transition-speed-fast) var(--transition-ease),
                box-shadow var(--transition-speed-fast) var(--transition-ease),
                background-color var(--transition-speed-fast) var(--transition-ease);
}

.neumorphic-btn:active {
    transform: translateY(1px);
    box-shadow: var(--neu-inset-sm);
}



/* -------------------------------------------------------------------------
   13. Footer
   ------------------------------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--card-border);
    padding: var(--space-xl) 0 var(--space-lg);
    background-color: var(--bg-sub);
    position: relative;
    z-index: 1;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

/* Branding */
.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.footer-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.footer-tagline {
    font-size: 0.813rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    letter-spacing: 0.3px;
}

/* Social Icons Row */
.footer-socials {
    display: flex;
    gap: var(--space-sm);
}

.footer-socials a {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background-color: var(--card-surface);
    box-shadow: var(--neu-raised-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.footer-socials a:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--neu-raised-sm), 0 6px 16px var(--accent-glow);
}

/* Gradient divider */
.footer-divider {
    width: 100%;
    max-width: 600px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--card-border), var(--accent-primary), var(--card-border), transparent);
}

/* Nav Links */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xs) var(--space-md);
}

.footer-links a {
    font-size: 0.813rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.25s ease;
    padding: 2px 0;
}

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

/* Bottom row: counter + copyright */
.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding-top: var(--space-xs);
}

.visitor-counter {
    background-color: transparent;
    padding: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: transform var(--transition-speed-fast) var(--transition-ease);
}

.visitor-counter:hover {
    transform: translateY(-2px);
}

.visitor-counter img {
    height: 22px;
    opacity: 0.9;
    border-radius: 4px;
    box-shadow: var(--neu-raised-sm);
}

.copyright {
    font-size: 0.813rem;
    color: var(--text-muted);
}



/* =========================================================================
   14. Comprehensive Responsive Design
   ========================================================================= */

/* ---- Tablet (992px) ---- */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .hero-visual {
        display: flex;
        justify-content: center;
    }

    .terminal-window {
        max-width: 540px;
        width: 100%;
        height: 300px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* ---- Small Tablet / Large Phone (768px) ---- */
@media (max-width: 768px) {
    /* Safe edge gap — the core fix */
    .container {
        padding: 0 1.25rem;
    }

    .section {
        padding: var(--space-xl) 0;
    }

    /* Hero */
    #hero {
        padding-top: 96px;
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    .hero-badge {
        align-self: center;
    }

    .hero-desc {
        max-width: 100%;
        text-align: center;
    }

    .hero-ctas {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: var(--space-xs);
    }

    .hero-ctas .btn {
        width: 100%;
        max-width: 280px;
        padding: 13px 24px;
    }

    .hero-socials {
        justify-content: center;
    }

    .hero-name {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }

    /* Terminal */
    .terminal-window {
        height: 260px;
        font-size: 0.75rem;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    /* Stats dashboard — compact on mobile */
    .stats-dashboard {
        padding: var(--space-sm);
        border-radius: var(--radius-sm);
    }

    .stats-meters-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }

    .svg-container,
    .svg-container svg {
        width: 80px;
        height: 80px;
    }

    .stat-value {
        font-size: 1rem;
    }

    /* Skills — single column */
    .skills-wrapper {
        grid-template-columns: 1fr;
    }

    .skills-category {
        padding: var(--space-sm);
    }

    /* Profiles — 2 columns */
    .profiles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xs);
    }

    .profile-card {
        padding: var(--space-xs);
    }

    /* Projects — single column, compact mock */
    .project-card-premium {
        grid-template-columns: 1fr;
        border-radius: var(--radius-sm);
    }

    .project-media-mock {
        border-right: none;
        border-bottom: 1px solid var(--card-border);
        min-height: 160px;
    }

    .project-details {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .project-links {
        flex-direction: column;
    }

    .project-links .btn {
        width: 100%;
        justify-content: center;
    }

    /* Timeline */
    .timeline-line-art {
        left: 16px;
    }

    .timeline-item {
        padding-left: 42px;
        margin-bottom: var(--space-md);
    }

    .timeline-dot {
        left: 7px;
        width: 16px;
        height: 16px;
        border-width: 3px;
    }

    .timeline-content {
        padding: var(--space-sm);
    }

    /* Achievements — single column */
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .achievement-card {
        padding: var(--space-sm);
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .contact-card {
        padding: var(--space-sm);
    }

    .neumorphic-btn {
        width: 100%;
        justify-content: center;
        align-self: stretch;
    }

    /* Section title */
    .section-title {
        font-size: clamp(1.6rem, 5vw, 2rem);
    }

    /* Footer */
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-xs) var(--space-sm);
    }

    .footer-tagline {
        font-size: 0.75rem;
    }
}

/* ---- Phone (480px) ---- */
@media (max-width: 480px) {
    /* Extra side breathing room */
    .container {
        padding: 0 1rem;
    }

    .hero-name {
        font-size: 1.9rem;
        letter-spacing: -0.5px;
    }

    /* Stats — visually compact */
    .stats-meters-row {
        grid-template-columns: 1fr 1fr;
    }

    /* Profiles — 2 columns still fits */
    .profiles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .profile-icon {
        width: 38px;
        height: 38px;
        font-size: 1.2rem;
    }

    .profile-name {
        font-size: 0.875rem;
    }

    .profile-handle {
        display: none; /* Hide handle on very small screens to save space */
    }

    /* Tech badges compact */
    .tech-badge {
        font-size: 0.688rem;
        padding: 3px 7px;
    }

    /* Navbar icons compact */
    .theme-toggle-btn,
    .nav-mobile-btn {
        width: 40px;
        height: 40px;
    }

    /* Footer social icons */
    .footer-socials a {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
}

/* ---- Very Small Phone (360px) ---- */
@media (max-width: 360px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 0.875rem;
    }

    .hero-name {
        font-size: 1.75rem;
    }

    .hero-typing {
        font-size: 1rem;
    }

    /* Profiles go single column at 360px */
    .profiles-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4px;
    }

    .profile-card {
        padding: 6px 4px;
    }

    .nav-links {
        width: 92vw;
    }

    .btn {
        font-size: 0.875rem;
        padding: 10px 18px;
    }
}

/* =========================================================================
   15. Currently Building Section
   ========================================================================= */
.building-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.building-card {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
    box-shadow: var(--neu-raised);
    transition: transform 0.3s var(--transition-ease),
                border-color 0.3s ease,
                box-shadow 0.3s ease;
    cursor: default;
}

.building-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--neu-raised), 0 8px 24px var(--accent-glow);
}

.building-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
    box-shadow: var(--neu-inset-sm);
}

.building-icon-wrap.dsa  { background-color: rgba(0, 242, 254, 0.08); color: #00f2fe; }
.building-icon-wrap.mern { background-color: rgba(97, 218, 251, 0.08); color: #61dafb; }
.building-icon-wrap.oss  { background-color: rgba(255, 255, 255, 0.06); color: var(--text-primary); }
.building-icon-wrap.ai   { background-color: rgba(168, 85, 247, 0.08); color: #a855f7; }

.building-body {
    flex: 1;
    min-width: 0;
}

.building-title {
    font-size: 0.975rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.building-desc {
    font-size: 0.813rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-xs);
}

.building-progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--bg-sub);
    border-radius: var(--radius-pill);
    overflow: hidden;
    margin-bottom: 4px;
    box-shadow: var(--neu-inset-sm);
}

.building-progress-fill {
    height: 100%;
    border-radius: var(--radius-pill);
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 1.2s var(--transition-ease);
}

.building-progress-label {
    font-family: var(--font-mono);
    font-size: 0.688rem;
    color: var(--text-muted);
}

/* GitHub Stats Widgets */
.stats-widget-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.widget-card {
    background-color: var(--card-surface);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--neu-raised);
    overflow: hidden;
}

.widget-header {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    font-family: var(--font-mono);
}

.widget-header i {
    color: var(--accent-primary);
}

.widget-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xs);
    display: block;
}

/* Remove all visitor counter legacy styles */
.visitor-counter,
.footer-bottom {
    display: none !important;
}

/* =========================================================================
   16. Mobile: Building Section
   ========================================================================= */
@media (max-width: 768px) {
    .building-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .building-card {
        padding: var(--space-sm);
        gap: var(--space-xs);
    }

    .building-icon-wrap {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .stats-widget-row {
        grid-template-columns: 1fr;
    }

    .widget-card {
        padding: var(--space-sm);
    }

    /* Footer clean on mobile */
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px 16px;
    }

    .footer-tagline {
        font-size: 0.75rem;
        text-align: center;
        padding: 0 var(--space-sm);
    }
}

/* -------------------------------------------------------------------------
   17. Premium Refinement Overrides
   ------------------------------------------------------------------------- */
:root {
    --page-gutter: clamp(1rem, 3.5vw, 2rem);
    --section-padding-y: clamp(4rem, 7vw, 6rem);
}

html {
    scroll-padding-top: 100px;
    scrollbar-gutter: stable;
}

body {
    overflow-x: hidden;
}

.container {
    padding-inline: var(--page-gutter);
}

.section {
    padding: var(--section-padding-y) 0;
}

.section-header {
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.section-title {
    flex-wrap: wrap;
    gap: 0.75rem;
}

.section-title::after {
    min-width: 72px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
}

.navbar {
    height: clamp(72px, 8vw, 80px);
}

.nav-container {
    width: 100%;
    padding-inline: 0;
}

.nav-links {
    width: min(360px, 88vw);
    padding: calc(var(--space-xxl) + 1rem) 0 var(--space-xl);
    align-items: stretch;
}

.nav-links li {
    text-align: left;
}

.nav-links a {
    justify-content: flex-start;
    min-height: 48px;
    width: 100%;
    padding-inline: 1.25rem;
}

.nav-actions {
    gap: var(--space-sm);
}

.hero-grid,
.about-grid,
.contact-grid {
    gap: clamp(1.5rem, 4vw, 2.5rem);
    align-items: center;
}

#hero {
    min-height: calc(100svh - 80px);
    padding-top: clamp(6.5rem, 10vw, 8.5rem);
    padding-bottom: var(--section-padding-y);
}

.hero-content,
.hero-visual,
.about-text,
.stats-dashboard,
.project-details,
.contact-info,
.contact-card,
.timeline-content,
.skills-category,
.achievement-card,
.profile-card,
.project-card-premium {
    min-width: 0;
}

.hero-desc,
.about-text p,
.project-desc-text,
.timeline-desc,
.contact-text,
.achievement-desc {
    overflow-wrap: anywhere;
}

.hero-desc {
    max-width: 58ch;
}

.hero-visual {
    width: 100%;
}

.terminal-window {
    width: 100%;
    max-width: 100%;
    height: clamp(320px, 45vw, 460px);
}

.terminal-input-line {
    gap: 0.5rem;
}

#terminal-input {
    min-width: 0;
}

.stats-dashboard {
    padding: clamp(1rem, 2.5vw, 1.5rem);
    gap: var(--space-sm);
}

.stats-meters-row {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.stat-radial-meter {
    gap: 0.4rem;
}

.svg-container,
.svg-container svg {
    width: 96px;
    height: 96px;
}

.github-widget {
    padding-top: var(--space-sm);
}

.github-widget-header {
    gap: 0.75rem;
}

.github-grid {
    grid-template-rows: repeat(7, 9px);
    grid-auto-columns: 9px;
    gap: 2px;
}

.skills-wrapper {
    gap: clamp(1rem, 2.5vw, 1.5rem);
}

.skills-category {
    padding: clamp(1rem, 2.8vw, 1.5rem);
}

.profile-card {
    padding: clamp(0.9rem, 2.2vw, 1.25rem);
}

.project-card-premium {
    grid-template-columns: minmax(220px, 0.95fr) minmax(0, 1.05fr);
}

.project-media-mock {
    min-height: clamp(220px, 28vw, 280px);
}

.project-details {
    padding: clamp(1rem, 2.8vw, 1.75rem);
    gap: var(--space-sm);
}

.project-tech-badges {
    row-gap: 0.5rem;
}

.timeline-container {
    padding-inline: 0.25rem;
}

.contact-card {
    padding: clamp(1rem, 2.8vw, 1.5rem);
}

.site-footer {
    padding: clamp(2rem, 5vw, 3rem) 0 clamp(1.5rem, 4vw, 2.5rem);
}

.footer-content {
    gap: clamp(1rem, 2.5vw, 1.5rem);
}

.footer-links {
    row-gap: 0.5rem;
}

@media (max-width: 768px) {
    .container {
        padding-inline: clamp(1rem, 4vw, 1.5rem);
    }

    .section {
        padding: clamp(3.25rem, 10vw, 4.5rem) 0;
    }

    .section-title::after {
        display: none;
    }

    #hero {
        min-height: auto;
        padding-top: 6.25rem;
        text-align: left;
    }

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

    .hero-content {
        align-items: flex-start;
    }

    .hero-badge,
    .hero-desc {
        align-self: flex-start;
        text-align: left;
    }

    .hero-ctas {
        width: 100%;
    }

    .hero-ctas .btn {
        width: 100%;
        max-width: none;
    }

    .hero-socials {
        justify-content: flex-start;
    }

    .terminal-window {
        height: clamp(260px, 58vw, 340px);
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .stats-dashboard {
        padding: 1rem;
    }

    .stats-meters-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .github-widget-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .profiles-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }

    .project-card-premium {
        grid-template-columns: 1fr;
    }

    .project-media-mock {
        border-right: none;
        border-bottom: 1px solid var(--card-border);
        min-height: 180px;
    }

    .project-links .btn,
    .neumorphic-btn {
        width: 100%;
        justify-content: center;
        align-self: stretch;
    }

    .timeline-line-art {
        left: 14px;
    }

    .timeline-item {
        padding-left: 38px;
    }

    .timeline-dot {
        left: 5px;
    }

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

    .footer-links {
        gap: 0.75rem 1rem;
    }

    .footer-socials {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 560px) {
    .hero-name {
        font-size: clamp(2rem, 11vw, 2.75rem);
    }

    .hero-typing {
        font-size: clamp(1rem, 4.8vw, 1.25rem);
        min-height: 1.8rem;
    }

    .hero-ctas,
    .hero-socials {
        width: 100%;
    }

    .stats-meters-row {
        grid-template-columns: 1fr;
    }

    .svg-container,
    .svg-container svg {
        width: 88px;
        height: 88px;
    }

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

    .project-tech-badges {
        gap: 0.4rem;
    }

    .tech-badge {
        font-size: 0.688rem;
    }

    .contact-details-list {
        gap: 0.75rem;
    }

    .contact-detail-item {
        align-items: flex-start;
    }

    .contact-detail-item i {
        flex-shrink: 0;
    }
}

@media (max-width: 420px) {
    .container {
        padding-inline: 0.875rem;
    }

    .navbar {
        height: 70px;
    }

    .nav-links {
        width: min(90vw, 320px);
    }

    .hero-badge {
        font-size: 0.74rem;
    }

    .btn {
        padding: 0.875rem 1rem;
    }

    .hero-ctas .btn,
    .neumorphic-btn {
        min-height: 48px;
    }

    .terminal-window {
        height: clamp(240px, 70vw, 300px);
        font-size: 0.74rem;
    }

    .terminal-header,
    .terminal-input-line {
        padding-inline: 0.75rem;
    }

    .terminal-title {
        font-size: 0.7rem;
    }

    .github-grid {
        grid-template-rows: repeat(7, 8px);
        grid-auto-columns: 8px;
    }

    .github-legend {
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .project-details,
    .contact-card,
    .skills-category,
    .achievement-card,
    .timeline-content {
        padding: 0.9rem;
    }

    .project-media-mock {
        min-height: 160px;
    }

    .ui-shell {
        width: 100%;
        height: 100%;
    }

    .ui-shell-header {
        grid-template-columns: 64px 1fr 64px;
    }

    .ui-address-bar {
        font-size: 0.625rem;
    }
}

@media (max-width: 360px) {
    html {
        font-size: 14px;
    }

    .container {
        padding-inline: 0.75rem;
    }

    .hero-name {
        font-size: clamp(1.8rem, 10vw, 2.2rem);
    }

    .hero-desc,
    .about-text p,
    .project-desc-text,
    .timeline-desc,
    .contact-text,
    .achievement-desc {
        font-size: 0.95rem;
    }

    .terminal-window {
        height: 250px;
    }

    .nav-links a {
        font-size: 1rem;
    }

    .profiles-grid {
        gap: 0.6rem;
    }

    .profile-card {
        padding: 0.8rem;
    }
}

@media (max-width: 320px) {
    .container {
        padding-inline: 0.625rem;
    }

    .hero-ctas .btn {
        padding-inline: 0.875rem;
    }

    .terminal-window {
        height: 232px;
    }

    .nav-links {
        width: 92vw;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Custom Certificate Button Styles */
.btn-cert {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--space-sm);
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: transparent;
    border: 1px solid var(--accent-primary);
    opacity: 0.8;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

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

.btn-cert:hover {
    opacity: 1;
    background: var(--accent-glow);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

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

.btn-cert i {
    transition: transform 0.3s ease;
}

.btn-cert:hover i {
    transform: scale(1.2) rotate(15deg);
}