/* Personal Site — Camarts-inspired design system */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0a0a;
    --bg-elevated: #141414;
    --bg-hover: #1c1c1c;
    --text: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border: rgba(255, 255, 255, 0.08);
    --accent: #e8e8e8;
    --sidebar-w: 220px;
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
    --font-serif: "Georgia", "Songti SC", "STSong", serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg: #fafafa;
    --bg-elevated: #ffffff;
    --bg-hover: #f0f0f0;
    --text: #171717;
    --text-secondary: #525252;
    --text-tertiary: #a3a3a3;
    --border: rgba(0, 0, 0, 0.08);
    --accent: #171717;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* Layout */
.app {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-w);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    padding: 32px 24px;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    background: var(--bg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 48px;
}

.logo-mark {
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 400;
    letter-spacing: -0.02em;
}

.logo-text {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.nav { flex: 1; }
.nav-item {
    display: block;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    transition: color var(--transition);
    cursor: pointer;
}
.nav-item:hover, .nav-item.active { color: var(--text); }
.nav-item.active { font-weight: 500; }

.sidebar-footer {
    font-size: 12px;
    color: var(--text-tertiary);
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    cursor: pointer;
}
.theme-toggle:hover { color: var(--text-secondary); }

.main {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-height: 100vh;
}

.view { display: none; padding: 48px 40px; animation: fadeIn 0.4s ease; }
.view.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-header {
    margin-bottom: 40px;
}

.view-title {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.view-desc {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 520px;
}

/* Gallery grid */
.gallery-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    max-width: 320px;
    padding: 10px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--text-tertiary); }
.search-input::placeholder { color: var(--text-tertiary); }

.tag-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.tag-btn {
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.tag-btn:hover, .tag-btn.active {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.gallery-grid {
    columns: 3;
    column-gap: 16px;
}
@media (max-width: 1200px) { .gallery-grid { columns: 2; } }
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main { margin-left: 0; }
    .view { padding: 24px 16px; }
    .gallery-grid { columns: 1; }
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 16px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background: var(--bg-elevated);
}
.gallery-item img {
    width: 100%;
    transition: transform 0.5s ease, opacity 0.3s;
}
.gallery-item:hover img { transform: scale(1.03); }
.gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 50%, rgba(0,0,0,0.7));
    opacity: 0;
    transition: opacity var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 16px;
}
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-title { font-size: 14px; font-weight: 500; color: #fff; }
.gallery-item-loc { font-size: 12px; color: rgba(255,255,255,0.7); margin-top: 2px; }

/* Discover hero */
.discover-hero {
    position: relative;
    height: 70vh;
    min-height: 400px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 48px;
}
.discover-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.discover-hero-caption {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 48px 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff;
}
.discover-hero-caption h2 {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 400;
    margin-bottom: 8px;
}
.discover-hero-caption p { font-size: 14px; opacity: 0.8; }

.featured-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
@media (max-width: 900px) { .featured-row { grid-template-columns: 1fr; } }

/* About */
.about-content {
    max-width: 640px;
}
.about-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 24px;
}
.about-content p:first-of-type {
    font-family: var(--font-serif);
    font-size: 22px;
    color: var(--text);
    line-height: 1.6;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 48px 0;
    padding: 32px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.stat-num {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 400;
}
.stat-label { font-size: 12px; color: var(--text-tertiary); margin-top: 4px; }

.skills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.skill-tag {
    padding: 6px 14px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Chronicle */
.timeline { max-width: 600px; }
.timeline-item {
    padding-left: 28px;
    padding-bottom: 32px;
    border-left: 1px solid var(--border);
    position: relative;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 6px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text);
}
.timeline-year { font-size: 12px; color: var(--text-tertiary); margin-bottom: 4px; }
.timeline-title { font-size: 16px; font-weight: 500; margin-bottom: 6px; }
.timeline-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
@media (max-width: 768px) { .projects-grid { grid-template-columns: 1fr; } }

.project-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px;
    transition: border-color var(--transition);
}
.project-card:hover { border-color: var(--text-tertiary); }
.project-type { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.project-title { font-size: 18px; font-weight: 500; margin-bottom: 8px; }
.project-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
.project-link { font-size: 13px; color: var(--text-secondary); }
.project-link:hover { color: var(--text); }

/* Map */
.map-container {
    height: 480px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}
.map-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    filter: grayscale(100%);
}
.map-pins {
    position: absolute;
    inset: 0;
}
.map-pin {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--text);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: transform 0.2s;
    box-shadow: 0 0 0 4px rgba(255,255,255,0.2);
}
.map-pin:hover { transform: translate(-50%, -50%) scale(1.4); }
.map-pin::after {
    content: attr(data-label);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: 11px;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 4px 8px;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    margin-bottom: 6px;
}
.map-pin:hover::after { opacity: 1; }
.map-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}
.map-legend-item {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.map-legend-dot {
    width: 8px;
    height: 8px;
    background: var(--text);
    border-radius: 50%;
}

/* Contact */
.contact-form { max-width: 480px; }
.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.form-input, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition);
}
.form-input:focus, .form-textarea:focus { border-color: var(--text-tertiary); }
.form-textarea { min-height: 140px; resize: vertical; }
.btn-submit {
    padding: 12px 32px;
    background: var(--text);
    color: var(--bg);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: opacity var(--transition);
}
.btn-submit:hover { opacity: 0.85; }

.contact-links {
    display: flex;
    gap: 24px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}
.contact-link {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color var(--transition);
}
.contact-link:hover { color: var(--text); }

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}
.lightbox.open { display: flex; }

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    opacity: 0.7;
    transition: opacity 0.2s;
    z-index: 10;
}
.lightbox-close:hover { opacity: 1; }

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    opacity: 0.5;
    transition: opacity 0.2s;
}
.lightbox-nav:hover { opacity: 1; }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

.lightbox-content {
    display: flex;
    max-width: 90vw;
    max-height: 90vh;
    gap: 32px;
    align-items: flex-start;
}
.lightbox-image-wrap {
    flex: 1;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox-image-wrap img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
}
.lightbox-meta {
    width: 280px;
    color: #fff;
    padding-top: 8px;
    flex-shrink: 0;
}
.lightbox-meta h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 400;
    margin-bottom: 4px;
}
.lightbox-meta .loc {
    font-size: 13px;
    opacity: 0.6;
    margin-bottom: 24px;
}
.meta-section { margin-bottom: 20px; }
.meta-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.5;
    margin-bottom: 8px;
}
.meta-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.meta-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.meta-tag {
    font-size: 11px;
    padding: 4px 10px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px;
    opacity: 0.7;
}

@media (max-width: 900px) {
    .lightbox-content { flex-direction: column; align-items: center; }
    .lightbox-meta { width: 100%; max-width: 480px; }
}

/* Toast */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--text);
    color: var(--bg);
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 13px;
    opacity: 0;
    transition: all 0.3s;
    z-index: 2000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Mobile nav */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    padding: 8px 16px;
    z-index: 100;
    justify-content: space-around;
}
.mobile-nav button {
    font-size: 11px;
    color: var(--text-tertiary);
    padding: 8px;
}
.mobile-nav button.active { color: var(--text); }

@media (max-width: 768px) {
    .mobile-nav { display: flex; }
    .main { padding-bottom: 64px; }
}