/* ============================================================
   Design System
   ============================================================ */
:root {
    --bg-primary: #07090f;
    --bg-secondary: #0c0f17;
    --bg-tertiary: #131826;
    --text-primary: #e8ecf4;
    --text-secondary: #94a0b8;
    --accent: #4f8ff7;
    --accent-2: #8b5cf6;
    --accent-hover: #6ca2f8;
    --border: #1c2333;
    --shadow: rgba(0, 0, 0, 0.45);
    --glow: rgba(79, 143, 247, 0.16);
    --nav-bg: rgba(7, 9, 15, 0.75);
    --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
    --name-gradient: linear-gradient(115deg, #e8ecf4 25%, var(--accent) 60%, var(--accent-2) 95%);

    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    --radius: 16px;
    --radius-sm: 10px;
}

[data-theme="light"] {
    --bg-primary: #fafbfd;
    --bg-secondary: #ffffff;
    --bg-tertiary: #edf0f6;
    --text-primary: #131927;
    --text-secondary: #5b6678;
    --accent: #2f6fe4;
    --accent-2: #7c4dec;
    --accent-hover: #2563eb;
    --border: #e2e7f0;
    --shadow: rgba(15, 23, 42, 0.1);
    --glow: rgba(47, 111, 228, 0.12);
    --nav-bg: rgba(250, 251, 253, 0.8);
    --name-gradient: linear-gradient(115deg, #131927 25%, var(--accent) 60%, var(--accent-2) 95%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* Ambient background glow */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(700px circle at 85% -5%, var(--glow), transparent 60%),
        radial-gradient(900px circle at -10% 100%, color-mix(in srgb, var(--accent-2) 7%, transparent), transparent 60%);
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.25;
}

::selection {
    background: color-mix(in srgb, var(--accent) 35%, transparent);
    color: var(--text-primary);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

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

/* ============================================================
   Scroll Progress Bar (injected by script.js)
   ============================================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--gradient);
    z-index: 200;
    pointer-events: none;
}

/* ============================================================
   Navigation Bar
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    padding: 0.9rem 2rem;
    border-bottom: 1px solid var(--border);
    background-color: var(--nav-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 100;
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 8px 30px var(--shadow);
}

/* Brand monogram (injected by script.js) */
.nav-brand {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    text-decoration: none;
    flex-shrink: 0;
}

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

.nav-content {
    display: flex;
    gap: 1.75rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient);
}

/* Nav right group (theme toggle + burger) */
.nav-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Burger button — hidden on desktop */
.burger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.burger-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.burger-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger-btn.open span:nth-child(2) { opacity: 0; }
.burger-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(20deg);
    border-color: var(--accent);
}

.theme-icon {
    font-size: 1.1rem;
}

/* ============================================================
   Container
   ============================================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* ============================================================
   Hero (About Section)
   ============================================================ */
.about-section {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 4rem;
    align-items: center;
    min-height: calc(100vh - 160px);
    margin-bottom: 6rem;
    padding-bottom: 3rem;
}

.about-content {
    animation: fadeInUp 0.8s ease;
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.name {
    font-size: clamp(2.5rem, 6vw, 4.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    background: var(--name-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Rotating typed roles */
.hero-roles {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-weight: 500;
    color: var(--text-secondary);
    min-height: 2.4rem;
    margin-bottom: 1.5rem;
}

.typing-caret {
    display: inline-block;
    width: 3px;
    height: 1.05em;
    margin-left: 5px;
    background: var(--accent);
    vertical-align: text-bottom;
    animation: caretBlink 1s step-end infinite;
}

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

/* Legacy static title (kept for compatibility) */
.title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.description {
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 54ch;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.25rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 0.92rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.social-link:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* Buttons */
.cv-button,
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.6rem;
    background: var(--gradient);
    color: #fff;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.3s ease;
}

.cv-button:hover,
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--glow), 0 4px 12px var(--shadow);
    filter: brightness(1.1);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.6rem;
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-ghost:hover {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow);
}

/* Hero stats (populated by script.js) */
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--border);
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 2.1rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

/* Scroll cue */
.scroll-cue {
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    transition: color 0.3s ease;
    animation: bobDown 2.2s ease-in-out infinite;
}

.scroll-cue:hover {
    color: var(--accent);
}

@keyframes bobDown {
    0%, 100% { transform: translate(-50%, 0); }
    50%      { transform: translate(-50%, 8px); }
}

/* Image Collage */
.image-collage {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.1rem;
    animation: fadeInRight 0.8s ease;
}

.collage-image {
    width: 100%;
    height: 210px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.collage-image:hover {
    box-shadow: 0 12px 32px var(--shadow);
}

/* ============================================================
   Sections
   ============================================================ */
.section {
    margin-bottom: 6rem;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    font-size: clamp(1.6rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 2.25rem;
}

.section-title::after {
    content: '';
    height: 1px;
    flex: 1;
    background: linear-gradient(90deg, var(--border), transparent);
}

/* ============================================================
   Cards Grid
   ============================================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    margin-bottom: 2rem;
}

.card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.card.animate {
    animation: fadeInUp 0.6s ease forwards;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 40px var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}

.card-image-container {
    width: 100%;
    height: 200px;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card:hover .card-image {
    transform: scale(1.07);
}

.card-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.card-company {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 0.4rem;
}

.card-dates {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.78rem;
    margin-bottom: 0.9rem;
}

.card-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* Tag chips (cards + detail items) */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 1rem;
}

.tag-chip {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.22rem 0.65rem;
    border-radius: 20px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 11%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
    white-space: nowrap;
}

/* "Read More" link on home page cards */
.card-read-more {
    display: inline-block;
    align-self: flex-start;
    margin-top: auto;
    padding-top: 1rem;
    color: var(--accent);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.card-read-more::after {
    content: ' →';
    transition: margin-left 0.2s ease;
}

.card-read-more:hover::after {
    margin-left: 4px;
}

/* View All Link */
.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.view-all-link:hover {
    gap: 1rem;
}

.view-all-link svg {
    transition: transform 0.3s ease;
}

.view-all-link:hover svg {
    transform: translateX(4px);
}

/* ============================================================
   Education Section
   ============================================================ */
.education-section {
    margin-bottom: 6rem;
}

.education-grid {
    display: grid;
    gap: 1.5rem;
}

.education-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.education-item:hover {
    transform: translateX(4px);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: 0 6px 20px var(--shadow);
}

.education-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
}

.education-info h3 {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
}

.education-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.education-dates {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.82rem;
    margin-left: auto;
    flex-shrink: 0;
}

/* ============================================================
   Detail Pages (experience / projects / competitions)
   ============================================================ */
.detail-page {
    animation: fadeInUp 0.8s ease;
}

.page-title {
    font-size: clamp(2rem, 4.5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    background: var(--name-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 64ch;
    margin-bottom: 3rem;
}

.detail-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail-item {
    display: flex;
    gap: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateX(-20px);
}

.detail-item.animate {
    animation: fadeInLeft 0.35s ease forwards;
}

.detail-item:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: 0 10px 32px var(--shadow);
}

.detail-logo {
    width: 72px;
    height: 72px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
}

.detail-image {
    width: 250px;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.detail-content {
    flex: 1;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.detail-title {
    font-size: 1.45rem;
    font-weight: 600;
}

.detail-dates {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.8rem;
    white-space: nowrap;
    padding-top: 0.4rem;
}

.detail-company {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.detail-summary {
    color: var(--text-secondary);
    line-height: 1.8;
}

.detail-description {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    line-height: 1.8;
}

.detail-description p {
    white-space: pre-line;
}

.read-more-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1.25rem;
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.read-more-btn:hover {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px var(--glow);
}

/* Experience page: vertical timeline */
#experienceList {
    position: relative;
    padding-left: 2.5rem;
}

#experienceList::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    opacity: 0.35;
}

#experienceList .detail-item {
    position: relative;
}

#experienceList .detail-item::before {
    content: '';
    position: absolute;
    left: -37px;
    top: 2.2rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 3px solid var(--accent);
    box-shadow: 0 0 12px var(--glow);
}

/* ============================================================
   Filter Bar (projects page, injected by script.js)
   ============================================================ */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2.25rem;
}

.filter-chip {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0.45rem 1.1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.25s ease;
}

.filter-chip:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.filter-chip.active {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
}

/* ============================================================
   Full Entry Pages (entries/*.html)
   ============================================================ */
.entry-page {
    max-width: 920px;
    margin: 0 auto;
}

.entry-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    transition: gap 0.2s ease;
}

.entry-back-link:hover {
    gap: 0.7rem;
}

.entry-meta {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-top: -0.25rem;
    margin-bottom: 3rem;
}

/* Each paragraph+image pair */
.entry-section {
    display: flex;
    gap: 3rem;
    align-items: center;
    padding: 2.5rem 0;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.entry-section.animate {
    opacity: 1;
    transform: translateY(0);
}

/* Flip image to left side */
.entry-section--reversed {
    flex-direction: row-reverse;
}

.entry-text {
    flex: 1;
    color: var(--text-secondary);
    line-height: 1.9;
    font-size: 1.02rem;
}

.entry-heading {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.entry-figure {
    flex-shrink: 0;
    margin: 0;
}

.entry-photo {
    width: 360px;
    height: 250px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: block;
    box-shadow: 0 8px 28px var(--shadow);
}

.entry-caption {
    margin-top: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Subtle divider between sections */
.entry-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
}

/* ============================================================
   Video support in cards / detail items
   ============================================================ */
.card-image-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-sm);
}

/* Play overlay on card video wrappers */
.card-image-container.card-video-wrapper {
    position: relative;
    cursor: pointer;
}

.card-video-wrapper .play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    background: rgba(0, 0, 0, 0.35);
    border-radius: var(--radius-sm);
}

.card-video-wrapper:hover .play-overlay {
    opacity: 1;
}

/* Video lightbox */
.video-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.video-lightbox.open {
    display: flex;
}

.video-lightbox-inner {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.video-lightbox-inner video {
    display: block;
    max-width: 90vw;
    max-height: 88vh;
    border-radius: var(--radius-sm);
    background: #000;
}

.video-lightbox-close {
    position: absolute;
    top: -2.75rem;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
    opacity: 0.75;
    transition: opacity 0.15s;
}

.video-lightbox-close:hover {
    opacity: 1;
}

video.detail-image {
    width: 250px;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    background: var(--bg-tertiary);
}

/* ============================================================
   Contact Section
   ============================================================ */
.contact-section {
    margin-bottom: 4rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.contact-card:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    transform: translateY(-3px);
    box-shadow: 0 10px 32px var(--shadow);
}

.contact-card-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.contact-card-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.contact-card-label {
    font-weight: 600;
    font-size: 1.05rem;
}

.contact-card-sub {
    color: var(--text-secondary);
    font-size: 0.88rem;
    word-break: break-all;
}

/* ============================================================
   Interests Page
   ============================================================ */
.interest-item {
    display: flex;
    gap: 2.5rem;
    align-items: center;
    padding: 2.5rem 0;
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.interest-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.interest-image {
    width: 320px;
    height: 220px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    flex-shrink: 0;
    box-shadow: 0 6px 24px var(--shadow);
}

.interest-content {
    flex: 1;
}

.interest-title {
    font-size: 1.45rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.interest-summary {
    color: var(--text-secondary);
    line-height: 1.85;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.interest-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.interest-tag {
    font-family: var(--font-mono);
    padding: 0.25rem 0.8rem;
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--accent);
}

.interest-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
}

/* ============================================================
   Skills Page
   ============================================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
}

.skill-category-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.45s ease, transform 0.45s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.skill-category-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.skill-category-card:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: 0 8px 28px var(--shadow);
}

.skill-category-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
}

.skill-category-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.skill-category-title::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--gradient);
    flex-shrink: 0;
}

.skill-category-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* Skill items render as a chip cloud */
.skill-items {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.25rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.skill-item-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.4rem 0.95rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all 0.25s ease;
}

.skill-name:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.skill-level-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 3px;
    transition: width 1s ease;
}

/* ============================================================
   Gallery Page (Pinterest masonry)
   ============================================================ */
.gallery-masonry {
    columns: 3 240px;
    column-gap: 1rem;
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
}

.gallery-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.35s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.03);
}

.gallery-caption {
    padding: 0.55rem 0.8rem 0.65rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ============================================================
   Sidebar Scroll Navigation (home page only, desktop only)
   ============================================================ */
.sidebar-nav {
    position: fixed;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    z-index: 50;
}

.sidebar-dot {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.6rem;
    text-decoration: none;
    cursor: pointer;
}

.sidebar-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateX(6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
}

.sidebar-pip {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    flex-shrink: 0;
    transition: background 0.2s ease, width 0.2s ease, height 0.2s ease, box-shadow 0.2s ease;
}

.sidebar-dot:hover .sidebar-label,
.sidebar-dot.active .sidebar-label {
    opacity: 1;
    transform: translateX(0);
}

.sidebar-dot:hover .sidebar-pip,
.sidebar-dot.active .sidebar-pip {
    background: var(--accent);
    width: 10px;
    height: 10px;
    box-shadow: 0 0 10px var(--glow);
}

/* ============================================================
   Footer (injected by script.js)
   ============================================================ */
.site-footer {
    margin-top: 4rem;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem 2.25rem;
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 2.5rem;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

.footer-tagline {
    margin-top: 0.6rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 36ch;
}

.footer-heading {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.2s ease;
    width: fit-content;
}

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

.footer-copy {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 1.4rem 2rem;
    border-top: 1px solid var(--border);
}

/* ============================================================
   Back to Top (injected by script.js)
   ============================================================ */
.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.3s ease;
    z-index: 90;
}

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

.back-to-top:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 6px 20px var(--glow);
}

/* ============================================================
   Missing-image placeholders (script.js swaps broken <img>)
   ============================================================ */
.img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        linear-gradient(135deg, var(--bg-tertiary), color-mix(in srgb, var(--accent) 9%, var(--bg-tertiary)));
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-display);
    overflow: hidden;
}

.img-placeholder span {
    font-size: 2.2rem;
    font-weight: 700;
    opacity: 0.45;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.img-placeholder.card-logo span,
.img-placeholder.detail-logo span,
.img-placeholder.education-logo span {
    font-size: 1.3rem;
}

.img-placeholder.gallery-img {
    height: 180px;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================================
   Responsive Design
   ============================================================ */
@media (max-width: 968px) {
    .about-section {
        grid-template-columns: 1fr;
        gap: 3rem;
        min-height: 0;
    }

    .scroll-cue {
        display: none;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-item {
        flex-direction: column;
    }

    .detail-image,
    video.detail-image {
        width: 100%;
        height: 200px;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
        padding: 0.75rem 1rem;
    }

    .burger-btn {
        display: flex;
    }

    .nav-content {
        display: none;
        order: 3;
        flex-direction: column;
        width: 100%;
        padding: 0.5rem 0;
        border-top: 1px solid var(--border);
        margin-top: 0.5rem;
        gap: 0;
    }

    .nav-content.open {
        display: flex;
    }

    .nav-link {
        padding: 0.75rem 0.25rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    /* Hide the underline active indicator in the dropdown */
    .nav-link.active::after {
        display: none;
    }

    .entry-section,
    .entry-section--reversed {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem 0;
    }

    .entry-photo {
        width: 100%;
        height: 220px;
    }

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

    .interest-item {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem 0;
    }

    .interest-image {
        width: 100%;
        height: 220px;
    }

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

    #experienceList {
        padding-left: 1.75rem;
    }

    #experienceList .detail-item::before {
        left: -25px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 2rem 1.25rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

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

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

    .detail-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .education-item {
        flex-direction: column;
        text-align: center;
    }

    .education-dates {
        margin-left: 0;
    }

    .gallery-masonry {
        columns: 2 160px;
    }
}

/* Hide sidebar when screen is too narrow to fit beside content */
@media (max-width: 1350px) {
    .sidebar-nav {
        display: none;
    }
}

/* ============================================================
   Reduced Motion
   ============================================================ */
@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;
    }

    .card,
    .detail-item,
    .entry-section,
    .interest-item,
    .skill-category-card {
        opacity: 1;
        transform: none;
    }
}

/* Availability line in hero */
.hero-availability {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    margin: -0.5rem 0 1.75rem;
    padding: 0.45rem 0.9rem;
    border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-availability::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    flex-shrink: 0;
}

/* Early projects (collapsed section on projects page) */
.early-projects {
    margin-top: 3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
}

.early-projects-summary {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 1.4rem 2rem;
    cursor: pointer;
    list-style: none;
    position: relative;
}

.early-projects-summary::-webkit-details-marker {
    display: none;
}

.early-projects-summary::after {
    content: '+';
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--accent);
}

.early-projects[open] .early-projects-summary::after {
    content: '\2212';
}

.early-projects-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.early-projects-sub {
    font-size: 0.92rem;
    color: var(--text-secondary);
    padding-right: 2.5rem;
}

.early-projects-list {
    padding: 0 1.25rem 1.25rem;
    gap: 1.25rem;
}

.early-projects-list .detail-item {
    padding: 1.5rem;
}

.early-projects-list .detail-image {
    width: 180px;
    height: 130px;
}

/* App Store button on app entry pages */
.app-store-btn {
    background: #000;
    color: #fff;
    border-color: #000;
    font-weight: 600;
}

.app-store-btn:hover {
    background: #1a1a1a;
    color: #fff;
}

[data-theme="dark"] .app-store-btn {
    border-color: #3a3a3a;
}

/* Spec table on entry pages */
.entry-specs {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 0;
    font-size: 0.92rem;
}

.entry-specs th,
.entry-specs td {
    text-align: left;
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.entry-specs th {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    width: 1%;
}

.entry-code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem 1.1rem;
    overflow-x: auto;
    line-height: 1.55;
    margin-top: 1rem;
    white-space: pre;
}

@media (max-width: 768px) {
    .early-projects-summary { padding: 1.2rem 1.25rem; }
    .early-projects-summary::after { right: 1.25rem; }
    .early-projects-list { padding: 0 0.75rem 0.75rem; }
}

.entry-text ul {
    padding-left: 1.3rem;
    margin: 0.25rem 0 1rem;
}

.entry-text li {
    margin-bottom: 0.45rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

.entry-text li strong {
    color: var(--text-primary);
}

.entry-text p + p,
.entry-text ul + p,
.entry-text p + table,
.entry-text ul + table {
    margin-top: 0.9rem;
}

.entry-text {
    min-width: 0;
}

@media (max-width: 768px) {
    .entry-specs th { white-space: normal; width: 30%; }
    .entry-specs th, .entry-specs td { padding: 0.5rem 0.4rem; }
    .entry-code { font-size: 0.75rem; }
}

@media (max-width: 768px) {
    .entry-text { width: 100%; }
}