/* variables.css loaded separately via HTML */

/* ===== Reset & Basics ===== */
.container { max-width: 1600px; margin: 0 auto; padding: 0 2.5rem; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }

/* ===== Utility Classes ===== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: 1rem; }
.w-full { width: 100%; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; font-weight: 600; }
.text-xl { font-size: 1.5rem; font-weight: 700; }
.text-muted { color: var(--text-muted); }
.font-bold { font-weight: 700; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-8 { padding: var(--space-8); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.pr-4 { padding-right: var(--space-4); }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-6 { margin-bottom: var(--space-6); }
.ml-2 { margin-left: var(--space-2); }

.gap-1 { gap: var(--space-1); }
.gap-3 { gap: var(--space-3); }

.flex-wrap { flex-wrap: wrap; }
.flex-shrink-0 { flex-shrink: 0; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.items-start { align-items: flex-start; }
.block { display: block; }
.hidden { display: none !important; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { inset: 0; }
.top-4 { top: var(--space-4); }
.left-4 { left: var(--space-4); }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.h-full { height: 100%; }
.rounded-lg { border-radius: var(--radius-md); }
.opacity-0 { opacity: 0; }
.cursor-pointer { cursor: pointer; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-center { text-align: center; }

.text-xs { font-size: 0.75rem; }
.text-2xl { font-size: 1.875rem; font-weight: 700; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-normal { font-weight: 400; }

.text-white { color: #fff; }
.text-secondary { color: var(--text-secondary); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-blue-400 { color: var(--accent); }
.text-cyan-400 { color: var(--sky); }
.text-pink-400 { color: var(--red); }
.text-purple-400 { color: var(--purple); }
.text-orange-400 { color: var(--amber); }
.text-yellow-400 { color: var(--amber); }
.text-emerald-400 { color: var(--green); }

.transition-colors { transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease; }
.transition-opacity { transition: opacity 0.2s ease; }
.transition-all { transition: all 0.2s ease; }

.hover\:text-white:hover { color: var(--text); }
.hover\:underline:hover { text-decoration: underline; }
.hover\:text-\[var\(--primary\)\]:hover { color: var(--primary); }
.hover\:border-\[var\(--primary\)\]:hover { border-color: var(--primary); }
.border-\[var\(--glass-border\)\] { border: 1px solid var(--border); }
.hover\:bg-blue-400\/10:hover { background: rgba(79, 124, 255, 0.10); }
.hover\:bg-cyan-400\/10:hover { background: rgba(14, 165, 233, 0.10); }
.hover\:bg-pink-400\/10:hover { background: rgba(244, 63, 94, 0.10); }
.hover\:bg-purple-400\/10:hover { background: rgba(139, 92, 246, 0.10); }
.hover\:bg-orange-400\/10:hover { background: rgba(245, 158, 11, 0.10); }
.hover\:bg-emerald-400\/10:hover { background: rgba(16, 185, 129, 0.10); }
.hover\:bg-yellow-400\/10:hover { background: rgba(245, 158, 11, 0.10); }

.group:hover .group-hover\:opacity-100 { opacity: 1; }

@keyframes spin { to { transform: rotate(360deg); } }
.animate-spin { animation: spin 1s linear infinite; }
@media (prefers-reduced-motion: reduce) { .animate-spin { animation: none; } }

/* ===== Components ===== */

/* CARD — clean surface, subtle border + shadow */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1.25rem 1.4rem;
    box-shadow: var(--shadow);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}
.card:hover { border-color: var(--border-strong); }

/* BUTTON */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.55rem 1rem;
    border-radius: var(--r-sm);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.18s ease;
    cursor: pointer;
    border: 1px solid transparent;
    line-height: 1.2;
}
.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(79, 99, 235, 0.25);
}
.btn-primary:hover { filter: brightness(1.05); box-shadow: 0 4px 14px rgba(79, 99, 235, 0.35); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--hover); color: var(--text); }
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow);
}
.btn-secondary:hover { background: var(--surface-2); }
.btn-outline { background: transparent; color: var(--text-2); border: 1px solid var(--border-strong); }
.btn-outline:hover { color: var(--text); border-color: var(--primary); }

/* ===== Sidebar ===== */
:root { --sidebar-width: 244px; --sidebar-collapsed-width: 76px; --header-height: 64px; }

.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    background: var(--side-bg);
    border-right: 1px solid var(--border);
    z-index: 50;
    transition: width 0.3s ease;
    overflow-x: hidden;
}

.nav-section {
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-3);
    font-weight: 600;
    padding: 14px 1.25rem 6px;
}

.user-profile-container {
    padding: 0.85rem 1rem;
    margin-top: auto;
    border-top: 1px solid var(--border);
}
.user-profile-content { display: flex; align-items: center; gap: 0.7rem; overflow: hidden; }

.sidebar-toggle-btn {
    display: flex; align-items: center; justify-content: center;
    width: 28px; height: 28px;
    border-radius: 6px;
    color: var(--text-3);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: transparent;
}
.sidebar-toggle-btn:hover { color: var(--text); background: var(--hover); }

/* Theme toggle */
.theme-toggle {
    display: flex; align-items: center; gap: 0.5rem;
    width: 100%;
    padding: 0.55rem 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: var(--r-sm);
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 0.8rem; font-weight: 500;
    cursor: pointer; transition: all 0.18s ease;
}
.theme-toggle:hover { background: var(--hover); color: var(--text); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: inline-flex; }
:root[data-theme="dark"] .theme-toggle .sun { display: inline-flex; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }

/* Collapsed state */
.sidebar.collapsed { width: var(--sidebar-collapsed-width); }
.sidebar.collapsed .brand-text,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .nav-section,
.sidebar.collapsed .user-info,
.sidebar.collapsed .theme-toggle span { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 0.7rem 0; }
.sidebar.collapsed .nav-icon { margin-right: 0; }
.sidebar.collapsed .sidebar-toggle-btn { transform: rotate(180deg); }
.sidebar.collapsed .theme-toggle { justify-content: center; }

/* NAV ITEM */
.nav-item {
    display: flex;
    align-items: center;
    padding: 0.6rem 0.75rem;
    margin: 1px 0;
    border-radius: var(--r-sm);
    transition: all 0.15s ease;
    color: var(--text-2);
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
}
.nav-item:hover { color: var(--text); background: var(--surface-2); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-item.active::before {
    content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 18px; border-radius: 0 3px 3px 0; background: var(--accent);
}
.nav-icon { margin-right: 0.7rem; color: currentColor; min-width: 18px; width: 18px; height: 18px; }

/* Main content offset */
#mainContent { transition: margin-left 0.3s ease; margin-left: var(--sidebar-width); min-width: 0; }
body.sidebar-collapsed #mainContent { margin-left: var(--sidebar-collapsed-width); }

/* ===== Page header (shared) ===== */
.page-header { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.4px; }
.page-header .sub { color: var(--text-3); font-size: 0.85rem; margin-top: 0.3rem; }
.page-header .actions { display: flex; gap: 0.6rem; align-items: center; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .sidebar { width: var(--sidebar-collapsed-width); }
    .sidebar .brand-text, .sidebar .nav-text, .sidebar .nav-section,
    .sidebar .user-info, .sidebar .theme-toggle span { display: none; }
    .sidebar .nav-item { justify-content: center; padding: 0.7rem 0; }
    .sidebar .nav-icon { margin-right: 0; }
    #mainContent { margin-left: var(--sidebar-collapsed-width); }
}

@media (max-width: 768px) {
    .mobile-col { flex-direction: column !important; }
    .mobile-w-full { width: 100% !important; }
    .mobile-items-start { align-items: flex-start !important; }
    .mobile-gap-4 { gap: 1rem !important; }
    .mobile-border-0 { border: none !important; }
    .container { padding: 0 1rem; }

    :root { --sidebar-collapsed-width: 0px; }
    .sidebar { transform: translateX(-100%); }
    .sidebar:not(.collapsed) { transform: translateX(0); width: 100%; background: var(--surface); }
    body.sidebar-collapsed #mainContent { margin-left: 0; }
    #mainContent { margin-left: 0 !important; }

    .video-header-image { width: 100% !important; height: auto !important; aspect-ratio: 16/9; margin-bottom: 1rem; }
    .stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; width: 100%; }
    .tabs-container { overflow-x: auto; padding-bottom: 0.5rem; margin-bottom: 1rem; -webkit-overflow-scrolling: touch; }
    .tab-btn { white-space: nowrap; }
    .mobile-menu-btn {
        display: flex !important; align-items: center; justify-content: center;
        width: 40px; height: 40px; margin-bottom: 1rem;
        background: var(--surface); color: var(--text);
        border: 1px solid var(--border); border-radius: var(--radius-md); cursor: pointer;
    }
}
.mobile-menu-btn { display: none; }

/* Mobile responsive tables (card view) */
@media (max-width: 768px) {
    table, thead, tbody, th, td, tr { display: block; }
    thead tr { position: absolute; top: -9999px; left: -9999px; }
    tr { margin-bottom: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1rem; }
    td { border: none; position: relative; padding-left: 50% !important; padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; min-height: 2rem; display: flex; align-items: center; text-align: right; justify-content: flex-end; }
    td::before { content: attr(data-label); position: absolute; left: 1rem; width: 45%; padding-right: 10px; white-space: nowrap; text-align: left; font-weight: bold; color: var(--text-muted); }
    td[data-label="Video"] { padding-left: 0 !important; display: block; text-align: left; }
    td[data-label="Video"]::before { display: none; }
    td[data-label="Rank"] { display: inline-block; padding: 0 !important; margin-bottom: 0.5rem; width: auto; }
    td[data-label="Rank"]::before { display: none; }
    td[data-label="Rank"] span { font-size: 0.875rem !important; background: var(--accent-soft); padding: 2px 8px; border-radius: 4px; color: var(--text-muted); border: 1px solid var(--border); }
}

/* ===== Shared components ===== */

/* Progress bar */
.bar-track { flex: 1; height: 8px; background: var(--inset); border-radius: var(--radius-full); overflow: hidden; }
.bar-fill { height: 100%; border-radius: var(--radius-full); transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
@media (prefers-reduced-motion: reduce) { .bar-fill { transition: none; } }

/* Toolbar + filter chips */
.toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.toolbar .sep { width: 1px; align-self: stretch; background: var(--border); margin: 2px 0.35rem; }
.toolbar .spacer { margin-left: auto; }
.toolbar select {
    padding: 0.45rem 0.6rem;
    font-size: 0.82rem;
    border-radius: var(--r-sm);
}
.field { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.78rem; color: var(--text-3); }

.chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text-2);
    font-size: 0.82rem; font-weight: 500;
    cursor: pointer; user-select: none;
    transition: all 0.15s ease;
}
.chip:hover { background: var(--surface-2); color: var(--text); }
.chip input { display: none; }
.chip:has(input:checked) { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.chip svg { width: 14px; height: 14px; }

/* Badge */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 0.7rem; font-weight: 700;
    padding: 2px 8px; border-radius: 6px;
    border: 1px solid transparent; line-height: 1.4;
}
.badge-muted   { background: var(--surface-2); color: var(--text-secondary); }
.badge-primary { background: var(--accent-soft); color: var(--accent); }
.badge-success { background: rgba(var(--success-rgb), 0.14); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.14); color: var(--warning); }
.badge-danger  { background: rgba(var(--danger-rgb), 0.14); color: var(--danger); }

/* Skeleton shimmer */
.skeleton { position: relative; overflow: hidden; background: var(--surface-2); border-radius: var(--radius-md); }
.skeleton::after {
    content: ""; position: absolute; inset: 0; transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, var(--hover-strong), transparent);
    animation: skeleton-shimmer 1.4s infinite;
}
@keyframes skeleton-shimmer { 100% { transform: translateX(100%); } }
@media (prefers-reduced-motion: reduce) { .skeleton::after { animation: none; } }

/* Form controls */
select, input[type="text"], input[type="search"], input[type="number"], input[type="date"], input[type="datetime-local"], textarea {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-sm);
    padding: 0.5rem 0.7rem;
    font-family: inherit;
    font-size: 0.875rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
select:focus, input[type="text"]:focus, input[type="search"]:focus, input[type="number"]:focus, input[type="date"]:focus, input[type="datetime-local"]:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
select option { background: var(--surface); color: var(--text); }

/* Table */
table { width: 100%; border-collapse: collapse; }
thead th {
    text-align: left; font-size: 0.75rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted);
    padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--border);
}
tbody td { padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--border); }
tbody tr { transition: background 0.15s ease; }
tbody tr:hover { background: var(--hover); }

/* Compact list table: number/status cells stay one line, "영상" cell stays wide */
.coll-table th, .coll-table td { white-space: nowrap; vertical-align: middle; }
.coll-table td:first-child, .coll-table th:first-child { white-space: normal; width: 42%; min-width: 280px; }
.coll-table thead th { background: var(--surface-2); }
.row-sel { padding: 4px 6px; background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 6px; color: var(--text); font-size: 0.78rem; outline: none; max-width: 110px; }
.row-sel option { background: var(--surface); color: var(--text); }

/* ===== Modal (reusable) ===== */
.modal-overlay {
    display: none; position: fixed; inset: 0; z-index: 1000;
    background: rgba(10, 14, 22, 0.55);
    -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
    align-items: center; justify-content: center; padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--r); box-shadow: var(--shadow-lg);
    width: 100%; max-width: 580px; max-height: 86vh; overflow: auto;
}
.modal-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.05rem 1.4rem; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; background: var(--surface); z-index: 1;
}
.modal-head h3 { font-size: 1.05rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-3); cursor: pointer; font-size: 1.5rem; line-height: 1; padding: 0 0.2rem; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 0.6rem 1.4rem 1.2rem; }

/* Help guide items */
.help-item { display: flex; gap: 0.9rem; padding: 0.85rem 0; border-bottom: 1px solid var(--border); }
.help-item:last-child { border-bottom: none; }
.help-item .hi-ic {
    width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
    background: var(--accent-soft); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
}
.help-item .hi-ic svg { width: 17px; height: 17px; }
.help-item .hi-t { font-weight: 600; font-size: 0.9rem; margin-bottom: 3px; }
.help-item .hi-d { font-size: 0.82rem; color: var(--text-2); line-height: 1.6; }
.help-item .hi-d b { color: var(--text); font-weight: 600; }