/* === Jico He / jicohe-box.cn === */

:root {
    --bg: #fafaf7;
    --bg-soft: #f3f2ee;
    --text: #1a1a1a;
    --text-secondary: #5c5c5c;
    --text-muted: #999999;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #e6e4dd;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", "Menlo", monospace;
    --nav-bg: rgba(250, 250, 247, 0.75);
    --nav-border: rgba(0, 0, 0, 0.07);
}
[data-theme="dark"] {
    --bg: #111110;
    --bg-soft: #1a1a18;
    --text: #e8e6e0;
    --text-secondary: #8a8a85;
    --text-muted: #555550;
    --accent: #4d8cf7;
    --accent-hover: #6ba3ff;
    --border: #2a2a25;
    --nav-bg: rgba(17, 17, 16, 0.75);
    --nav-border: rgba(255, 255, 255, 0.07);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

/* Nav */
nav {
    position: sticky; top: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 2rem; height: 48px;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--nav-border);
}
.nav-left { display: flex; align-items: center; gap: 1.5rem; }
.nav-name {
    font-weight: 600; font-size: 0.88rem;
    letter-spacing: -0.01em;
    text-decoration: none; color: var(--text);
}
.nav-links { display: flex; gap: 0.1rem; }
.nav-link {
    background: none; border: none;
    font-size: 0.8rem; cursor: pointer;
    padding: 0.3rem 0.55rem; border-radius: 4px;
    color: var(--text-muted); font-family: inherit;
    transition: color 0.15s ease;
    text-decoration: none;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--accent); font-weight: 500; }
.nav-right { display: flex; gap: 0.15rem; align-items: center; }
.nav-btn {
    background: none; border: none; font-size: 0.78rem; cursor: pointer;
    padding: 0.25rem 0.45rem; border-radius: 4px;
    color: var(--text-muted); font-family: inherit;
    transition: color 0.15s ease;
}
.nav-btn:hover { color: var(--text); }
.nav-btn.on { color: var(--accent); font-weight: 500; }
.nav-divider {
    width: 1px; height: 14px;
    background: var(--border); margin: 0 0.25rem;
}

/* Hamburger (mobile) — two lines → X (Apple style) */
#menu-toggle {
    position: absolute; opacity: 0; pointer-events: none;
}
.nav-hamburger {
    display: none;
    background: none; border: none; cursor: pointer;
    width: 28px; height: 28px;
    position: fixed;
    top: 10px; right: 16px;
    z-index: 300;
}
.nav-hamburger span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1),
                opacity 0.2s ease;
    transform-origin: center center;
}
.nav-hamburger span:first-child {
    transform: translate(-50%, -50%) translateY(-7px) rotate(0deg);
}
.nav-hamburger span:last-child {
    transform: translate(-50%, -50%) translateY(7px) rotate(0deg);
}
#menu-toggle:checked ~ .nav-hamburger span:first-child {
    transform: translate(-50%, -50%) translateY(0) rotate(45deg);
}
#menu-toggle:checked ~ .nav-hamburger span:last-child {
    transform: translate(-50%, -50%) translateY(0) rotate(-45deg);
}

/* Mobile menu overlay — frosted glass + slide down */
.mobile-menu {
    position: fixed; inset: 0; z-index: 200;
    display: flex; flex-direction: column; align-items: flex-start;
    justify-content: flex-start;
    padding: 5rem 2rem 2rem;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    pointer-events: none;
    cursor: default;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1),
                opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}
[data-theme="dark"] .mobile-menu {
    background: rgba(0, 0, 0, 0.78);
}
#menu-toggle:checked ~ .mobile-menu {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}
.mm-inner {
    display: flex; flex-direction: column;
    width: 100%;
}
.mm-inner > * {
    opacity: 0;
    transform: translateY(16px);
    filter: blur(6px);
    transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1),
                transform 0.7s cubic-bezier(0.23, 1, 0.32, 1),
                filter 0.7s ease;
}
#menu-toggle:checked ~ .mobile-menu .mm-inner > * {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(1) { transition-delay: 0.10s; }
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(2) { transition-delay: 0.20s; }
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(3) { transition-delay: 0.30s; }
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(4) { transition-delay: 0.40s; }
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(5) { transition-delay: 0.50s; }
#menu-toggle:checked ~ .mobile-menu .mm-inner > *:nth-child(6) { transition-delay: 0.60s; }
.mobile-menu a {
    font-size: 1.3rem; font-weight: 600;
    color: var(--text);
    text-decoration: none;
    padding: 0.8rem 0;
    letter-spacing: -0.02em;
}
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .mm-divider {
    height: 1px; background: var(--border);
    margin: 0.5rem 0;
}
.mobile-menu .mm-lang {
    display: flex; gap: 0.5rem; margin-top: 1rem;
}
.mobile-menu .mm-btn {
    font-size: 0.9rem; padding: 0.4rem 0.8rem;
    border: 1px solid var(--border); border-radius: 6px;
    background: none; color: var(--text-secondary);
    cursor: pointer; font-family: inherit;
}
.mobile-menu .mm-btn.on {
    border-color: var(--accent); color: var(--accent);
}

/* Lock body scroll when mobile menu is open */
body:has(#menu-toggle:checked) {
    overflow: hidden;
}

/* Layout */
.container {
    max-width: 720px; margin: 0 auto; padding: 3rem 1.5rem 4rem;
}

/* Page header */
.page-header {
    padding-bottom: 1.5rem; margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border);
}
.page-header h1 {
    font-size: 1.4rem; font-weight: 700;
    letter-spacing: -0.03em; line-height: 1.2;
    margin-bottom: 0.3rem;
}
.page-header .page-desc {
    font-size: 0.88rem; color: var(--text-muted);
}

/* Hero (homepage only) */
.hero {
    display: flex; gap: 2rem; align-items: flex-start;
    padding-bottom: 3rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}
.hero-avatar {
    flex-shrink: 0; width: 100px; height: 100px;
    border-radius: 50%; object-fit: cover;
    border: 1px solid var(--border);
}
.hero-text h1 {
    font-size: 1.6rem; font-weight: 700;
    letter-spacing: -0.03em; line-height: 1.2;
    margin-bottom: 0.2rem;
}
.hero-subtitle {
    font-size: 0.88rem; color: var(--text-secondary);
    margin-bottom: 0.5rem;
}
.hero-motto {
    font-size: 0.85rem; color: var(--text-muted);
    font-style: italic; margin-bottom: 0.6rem;
}
.hero-stats {
    display: flex; flex-wrap: wrap; gap: 0.35rem;
}
.stat {
    font-family: var(--font-mono);
    font-size: 0.72rem; font-weight: 500;
    padding: 0.18rem 0.55rem;
    border-radius: 3px;
    color: var(--text-secondary);
    background: var(--bg-soft);
    border: 1px solid var(--border);
}

/* Sections */
section { margin-bottom: 3.5rem; }
.section-label {
    font-family: var(--font-mono);
    font-size: 0.7rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.06em;
    margin-bottom: 0.6rem;
}
.about-text {
    font-size: 0.92rem; color: var(--text-secondary);
    line-height: 1.85;
}
.about-text strong { color: var(--text); font-weight: 600; }

/* Item list (projects, reading, now) */
.item-list { list-style: none; }
.item-row {
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--border);
}
.item-row:last-child { border-bottom: none; }
.item-head {
    display: flex; align-items: baseline; gap: 0.6rem;
    margin-bottom: 0.25rem;
}
.item-title {
    font-size: 0.95rem; font-weight: 600;
}
.item-meta {
    font-family: var(--font-mono);
    font-size: 0.68rem; color: var(--text-muted);
    white-space: nowrap;
}
.item-link {
    color: inherit; text-decoration: none;
    transition: color 0.15s ease;
}
.item-link:hover { color: var(--accent); }
.item-desc {
    font-size: 0.85rem; color: var(--text-secondary);
    line-height: 1.65;
}
.item-tags {
    display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.4rem;
}
.itag {
    font-family: var(--font-mono);
    font-size: 0.65rem; padding: 0.12rem 0.45rem;
    border-radius: 3px;
    background: var(--bg-soft);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* Other list (leadership) */
.other-list { list-style: none; }
.other-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
}
.other-item:last-child { border-bottom: none; }
.other-item h4 {
    font-size: 0.9rem; font-weight: 600;
    flex-shrink: 0;
}
.other-item p {
    font-size: 0.8rem; color: var(--text-secondary);
    text-align: right;
}

/* Photo grid */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.8rem;
}
.photo-grid img {
    width: 100%; height: auto; display: block;
    border-radius: 4px;
    border: 1px solid var(--border);
}

/* Footer */
footer {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.5rem 0 0; font-size: 0.75rem; color: var(--text-muted);
    border-top: 1px solid var(--border);
    flex-wrap: wrap; gap: 0.8rem;
    font-family: var(--font-mono);
}
.admin-dot {
    width: 26px; height: 26px; border-radius: 50%;
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.6rem; color: var(--text-muted);
    transition: border-color 0.15s ease, color 0.15s ease;
    background: var(--bg-soft);
}
.admin-dot:hover { border-color: var(--accent); color: var(--accent); }
.admin-dot.logged-in { border-color: var(--accent); color: var(--accent); }

/* Language */
[data-lang] { display: none; }
[data-lang="zh"] { display: inline; }
[data-lang-block="zh"] { display: block; }
[data-lang-block="en"] { display: none; }
html[lang="en"] [data-lang="zh"] { display: none; }
html[lang="en"] [data-lang="en"] { display: inline; }
html[lang="en"] [data-lang-block="zh"] { display: none; }
html[lang="en"] [data-lang-block="en"] { display: block; }

/* Admin modal */
.admin-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: none; align-items: center; justify-content: center;
    padding: 1.5rem;
}
.admin-overlay.active { display: flex; }
.admin-modal {
    width: 100%; max-width: 380px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
    animation: modal-in 0.2s cubic-bezier(0.23, 1, 0.32, 1);
}
@keyframes modal-in {
    from { opacity: 0; transform: scale(0.97); }
    to { opacity: 1; transform: scale(1); }
}
.am-header { padding: 1.8rem 1.8rem 0.8rem; text-align: center; }
.am-header h2 { font-size: 0.95rem; font-weight: 600; }
.am-body { padding: 0 1.8rem 1.5rem; }
.pw-row { display: flex; gap: 0.4rem; }
.pw-row input {
    flex: 1; padding: 0.6rem 0.75rem;
    background: var(--bg-soft); border: 1px solid var(--border);
    border-radius: 6px; color: var(--text);
    font-size: 0.88rem; outline: none; font-family: inherit;
    transition: border-color 0.15s ease;
}
.pw-row input:focus { border-color: var(--accent); }
.pw-row button {
    padding: 0.6rem 1.1rem;
    background: var(--accent); border: none;
    border-radius: 6px; color: #fff;
    font-weight: 600; font-size: 0.85rem; cursor: pointer; font-family: inherit;
    transition: background 0.15s ease, transform 0.1s ease;
}
.pw-row button:hover { background: var(--accent-hover); }
.pw-row button:active { transform: scale(0.97); }
.lock-msg {
    font-size: 0.76rem; text-align: center; min-height: 1.2em;
    margin-top: 0.5rem; color: var(--text-muted);
}
.lock-msg.error { color: #dc2626; }
.am-footer { padding: 0.2rem 1.8rem 1rem; text-align: center; }
.am-close {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; font-size: 0.78rem; font-family: inherit;
    transition: color 0.15s ease;
}
.am-close:hover { color: var(--text-secondary); }

.admin-dashboard {
    display: none; width: 100%; max-width: 560px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
    animation: modal-in 0.2s cubic-bezier(0.23, 1, 0.32, 1);
    overflow: hidden;
}
.admin-dashboard.active { display: block; }
.dash-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.2rem 1.6rem 0.8rem;
}
.dash-title { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.dash-close {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; font-size: 1rem; transition: color 0.15s ease;
}
.dash-close:hover { color: var(--text); }
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem; padding: 0 1.6rem 1.5rem;
}
.service-card {
    padding: 0.9rem 1.1rem; text-decoration: none; color: inherit;
    display: block; border: 1px solid var(--border);
    border-radius: 6px; background: var(--bg-soft);
    transition: border-color 0.15s ease;
}
.service-card:hover { border-color: var(--accent); }
.service-card .s-title { font-size: 0.82rem; font-weight: 600; }
.service-card .s-desc { font-size: 0.7rem; color: var(--text-muted); margin-top: 0.1rem; }
.token-num {
    font-family: var(--font-mono);
    font-size: 1.2rem; font-weight: 700; color: var(--accent);
}
.dash-actions {
    display: flex; gap: 0.4rem; padding: 0 1.6rem 1rem;
}
.dash-actions button {
    font-size: 0.72rem; padding: 0.3rem 0.7rem;
    background: none; border: 1px solid var(--border);
    border-radius: 4px; color: var(--text-muted);
    cursor: pointer; font-family: inherit;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.dash-actions button:hover { border-color: #dc2626; color: #dc2626; }
.dash-footer {
    text-align: center; padding: 0 1.6rem 1.2rem;
    font-size: 0.66rem; color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Placeholder */
.placeholder {
    color: var(--text-muted); font-style: italic;
    padding: 1rem 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .admin-modal, .admin-dashboard { animation: none; }
    .gallery-item { transition: none; }
    .gallery-item:hover { transform: none; }
    .gallery-item:active { transform: none; }
    .gallery.crossfading .gallery-item { filter: none; opacity: 1; }
    .lb-panel { transition: none; }
    .lightbox-main img { transition: none; }
}

@media (max-width: 600px) {
    nav { padding: 0 1rem; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .nav-right .nav-btn, .nav-right .nav-divider { display: none; }
    .container { padding: 2rem 1rem 3rem; }
    .hero { flex-direction: column; align-items: center; text-align: center; gap: 1rem; }
    .hero-stats { justify-content: center; }
    .hero-text h1 { font-size: 1.4rem; }
    .hero-avatar { width: 88px; height: 88px; }
    .other-item { flex-direction: column; align-items: flex-start; gap: 0.1rem; }
    .other-item p { text-align: left; }
    .service-grid { grid-template-columns: 1fr; }
    .pw-row { flex-direction: column; }
}