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

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1424;
    --bg-tertiary: #151b2e;
    --bg-card: #131a2c;
    --border: #1f2940;
    --border-light: #2a3550;
    --text-primary: #e6edf7;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --accent-soft: rgba(56, 189, 248, 0.12);
    --purple: #a855f7;
    --green: #4ade80;
    --red: #ef4444;
    --yellow: #fbbf24;
    --gradient: linear-gradient(135deg, #38bdf8 0%, #a855f7 100%);
    --gradient-soft: linear-gradient(135deg, rgba(56,189,248,0.15) 0%, rgba(168,85,247,0.15) 100%);
    --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 50px -15px rgba(56, 189, 248, 0.25);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --container: 1200px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover { color: var(--accent-hover); }

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

ul { list-style: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ===========================
   Buttons
=========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.5);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-secondary:hover {
    background: var(--accent-soft);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-light);
}

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-block { width: 100%; }

/* ===========================
   Navbar
=========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.95);
    border-bottom-color: var(--border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo:hover { color: var(--text-primary); }

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent);
}

.nav-links a.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 22px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

/* ===========================
   Hero
=========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    opacity: 0.4;
    z-index: 0;
}

.hero::before {
    content: "";
    position: absolute;
    top: 20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(56,189,248,0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: 10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(168,85,247,0.12) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-greeting {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.terminal-prompt {
    color: var(--green);
    margin-right: 8px;
}

.hero-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 16px;
}

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

.hero-title {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 24px;
    font-family: var(--font-mono);
}

.role-prefix { color: var(--accent); margin-right: 8px; }

.cursor {
    color: var(--accent);
    animation: blink 1s infinite;
    display: inline-block;
    margin-left: 2px;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 36px;
}

.hero-description strong { color: var(--text-primary); }

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

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

.hero-socials a {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.hero-socials a:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(56, 189, 248, 0.2);
}

/* Code window */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    width: 100%;
    max-width: 520px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.code-window:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 60px -15px rgba(56, 189, 248, 0.3);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

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

.dot-red { background: #ef4444; }
.dot-yellow { background: #fbbf24; }
.dot-green { background: #4ade80; }

.code-filename {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: auto;
}

.code-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-primary);
    overflow-x: auto;
}

.code-body .kw { color: #c084fc; }
.code-body .cls { color: var(--yellow); }
.code-body .var { color: var(--accent); }
.code-body .str { color: #86efac; }
.code-body .num { color: #fb923c; }
.code-body .fn { color: #f472b6; }
.code-body .cmt { color: var(--text-muted); font-style: italic; }

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 44px;
    border: 2px solid var(--border-light);
    border-radius: 14px;
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    margin: 8px auto 0;
    animation: scrollDown 1.8s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(0); opacity: 0; }
    40% { opacity: 1; }
    100% { transform: translateY(14px); opacity: 0; }
}

/* ===========================
   Sections (general)
=========================== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-alt {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 12px;
    padding: 4px 12px;
    background: var(--accent-soft);
    border-radius: 999px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ===========================
   About
=========================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: start;
}

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

.about-text strong { color: var(--text-primary); }
.about-text a { font-weight: 500; }

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 36px;
}

.stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px 12px;
    text-align: center;
    transition: var(--transition);
}

.stat:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-plus, .stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.78rem;
    margin-top: 4px;
    letter-spacing: 0.3px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 12px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.profile-photo-wrap {
    position: relative;
    padding: 0;
    overflow: hidden;
    border-bottom: 2px solid var(--border-light);
    background: var(--bg-tertiary);
}

.profile-photo-wrap::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 14, 26, 0.4) 100%);
    pointer-events: none;
}

.profile-photo {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: center 30%;
    display: block;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-photo-wrap:hover .profile-photo {
    transform: scale(1.04);
}

.info-list { padding: 8px 0; }

.info-list li {
    display: grid;
    grid-template-columns: 110px 1fr;
    padding: 12px 20px;
    font-size: 0.92rem;
    border-bottom: 1px solid var(--border);
}

.info-list li:last-child { border-bottom: none; }

.info-key {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.info-val { color: var(--text-primary); }

.status-open {
    color: var(--green);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.status-open::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(74,222,128,0.2); }
    50% { box-shadow: 0 0 0 8px rgba(74,222,128,0.05); }
}

/* ===========================
   Skills
=========================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.skill-card-featured {
    background: var(--gradient-soft);
    border-color: var(--accent);
}

.skill-card-featured::before { transform: scaleX(1); }

.skill-card-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: #fff;
    background: var(--gradient);
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.skill-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.skill-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.skill-card:hover::before { transform: scaleX(1); }

.skill-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-soft);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.skill-card h3 {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

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

.skill-tags li {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.skill-tags li:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-1px);
}

/* Working-knowledge subgroup inside a skill card */
.skill-subgroup {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--border-light);
}

.skill-subgroup-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.skill-tags-muted li {
    background: transparent;
    color: var(--text-muted);
    border-style: dashed;
}

/* Currently exploring (not core skills) */
.skills-learning {
    margin-top: 24px;
    padding: 20px 24px;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-light);
    border-radius: var(--radius);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 18px;
}

.learning-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--green);
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.learning-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    flex: 1 1 240px;
    margin: 0;
}

.learning-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.learning-tags li {
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border: 1px dashed var(--border-light);
}

/* ===========================
   Experience Timeline
=========================== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 20px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent) 0%, var(--purple) 50%, transparent 100%);
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 48px;
}

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

.timeline-dot {
    position: absolute;
    left: -3px;
    top: 6px;
    width: 18px;
    height: 18px;
    background: var(--bg-primary);
    border: 3px solid var(--accent);
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:first-child .timeline-dot {
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.timeline-role {
    font-size: 1.25rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.timeline-company {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

a.timeline-company:hover { color: var(--accent); }

.timeline-product {
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    padding: 10px 14px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-primary);
    font-size: 0.92rem;
    margin: 0 0 16px;
    line-height: 1.5;
}

.timeline-product a {
    font-weight: 600;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.timeline-tags li {
    background: var(--bg-tertiary);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
}

.timeline-points li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 18px;
    position: relative;
    font-size: 0.95rem;
}

.timeline-points li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.timeline-points strong { color: var(--text-primary); }

/* ===========================
   Projects
=========================== */
.project-featured {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    margin-bottom: 48px;
    position: relative;
    overflow: hidden;
    background-image: var(--gradient-soft);
}

.project-featured::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.project-featured-content { position: relative; z-index: 1; }

.project-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    background: var(--gradient);
    color: #fff;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.project-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 8px;
}

.project-tagline {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 16px;
    font-weight: 500;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 720px;
}

.project-section-title {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    margin: 24px 0 14px;
}

.project-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}

.highlight-item {
    background: rgba(15, 20, 36, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    transition: var(--transition);
}

.highlight-item:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.highlight-num {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 2px;
    letter-spacing: -0.5px;
}

.highlight-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.project-modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.module-card {
    background: rgba(15, 20, 36, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    transition: var(--transition);
}

.module-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.module-icon {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.module-card h4 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.module-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.project-tech li {
    background: var(--bg-tertiary);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

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

.project-card-type {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
}

.project-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
    flex-grow: 1;
}

.project-tech-sm li {
    font-size: 0.72rem;
    padding: 3px 8px;
}

.project-writeup-link {
    display: inline-block;
    margin-top: 14px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
}

.project-writeup-link:hover {
    color: var(--accent-hover);
    transform: translateX(3px);
}

/* ===========================
   Education
=========================== */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
}

.edu-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.edu-year {
    position: absolute;
    top: 24px;
    right: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 4px 12px;
    border-radius: 999px;
}

.edu-card h3 {
    font-size: 1.35rem;
    margin-bottom: 6px;
    margin-right: 80px;
}

.edu-field {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 8px;
}

.edu-school {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 20px;
}

.edu-cgpa {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.edu-cgpa span {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.edu-cgpa strong {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

/* ===========================
   Contact
=========================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

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

.contact-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-soft);
    color: var(--accent);
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-list .contact-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 2px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-list a, .contact-list span:not(.contact-label):not(.contact-icon) {
    color: var(--text-primary);
    font-weight: 500;
}

.contact-list a:hover { color: var(--accent); }

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 0.88rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.form-status {
    margin-top: 16px;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(74, 222, 128, 0.1);
    color: var(--green);
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ===========================
   Footer
=========================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-copy, .footer-tech {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.footer-tech { font-family: var(--font-mono); font-size: 0.8rem; }

/* ===========================
   Back to top
=========================== */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(56,189,248,0.4);
}

/* ===========================
   Reveal animations
=========================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===========================
   Responsive
=========================== */
@media (max-width: 968px) {
    .hero-container { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { order: -1; }
    .code-window { max-width: 100%; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: var(--transition);
    }
    .nav-links.active { transform: translateY(0); }
    .nav-links li { width: 100%; }
    .nav-links a {
        display: block;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
    }
    .hamburger { display: flex; }
    .hero { padding: 100px 0 60px; min-height: auto; }
    .section { padding: 70px 0; }
    .project-featured { padding: 32px 24px; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .footer-container { flex-direction: column; text-align: center; }
    .timeline { padding-left: 0; }
    .info-list li { grid-template-columns: 90px 1fr; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .stat { padding: 16px 8px; }
    .stat-number { font-size: 1.6rem; }
    .code-body { font-size: 0.72rem; padding: 16px; }
}