/*
Theme Name: StreamLine
Theme URI:
Author: Sand
Description: Speed-first video theme. Ultra-fast, modern, SEO-optimized with mobile-first design. CSS containment, content-visibility, zero-JS navigation.
Version: 1.0.1
Requires at least: 5.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: streamline
Tags: video, dark-mode, responsive-layout, custom-colors
*/

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    --sl-bg-0: #0a0a0f;
    --sl-bg-1: #111118;
    --sl-bg-2: #1a1a24;
    --sl-bg-3: #222230;
    --sl-accent: #0ea5e9;
    --sl-accent-light: #38bdf8;
    --sl-accent-dim: #0284c7;
    --sl-accent-glow: rgba(14,165,233,0.12);
    --sl-text: #f0f0f5;
    --sl-text-2: #9ca3af;
    --sl-text-3: #6b7280;
    --sl-line: rgba(255,255,255,0.06);
    --sl-line-accent: rgba(14,165,233,0.3);
    --sl-r: 8px;
    --sl-r-sm: 4px;
    --sl-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --sl-fast: 0.15s;
    --sl-footer-bg: #0a0a0f;
}

[data-theme="light"] {
    --sl-bg-0: #ffffff;
    --sl-bg-1: #f8fafc;
    --sl-bg-2: #ffffff;
    --sl-bg-3: #f1f5f9;
    --sl-text: #0f172a;
    --sl-text-2: #64748b;
    --sl-text-3: #94a3b8;
    --sl-line: rgba(0,0,0,0.08);
    --sl-line-accent: rgba(14,165,233,0.25);
    --sl-footer-bg: #0f172a;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 0.875rem;
    line-height: 1.4;
    color: var(--sl-text);
    background: var(--sl-bg-1);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

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

/* ========================================
   Layout
   ======================================== */
.sl-wrap {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.sl-content {
    flex: 1;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 12px 32px;
}

/* ========================================
   Header — Gradient Stripe + Top Bar
   ======================================== */
.sl-stripe {
    height: 3px;
    background: linear-gradient(90deg, var(--sl-accent), var(--sl-accent-dim), transparent 80%);
}

.sl-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--sl-bg-0);
    border-bottom: 1px solid var(--sl-line);
}

.sl-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 12px;
    height: 52px;
}

.sl-logo {
    display: flex;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 700;
    white-space: nowrap;
}

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

.sl-topbar-spacer { flex: 1; }

/* Desktop search in header */
.sl-header-search {
    display: none;
    position: relative;
    max-width: 320px;
    width: 100%;
}

.sl-header-search input {
    width: 100%;
    padding: 6px 12px 6px 34px;
    border: 1px solid var(--sl-line);
    border-radius: 20px;
    background: var(--sl-bg-2);
    color: var(--sl-text);
    font-size: 0.8125rem;
    outline: none;
    transition: border-color var(--sl-fast) var(--sl-ease);
}

.sl-header-search input:focus { border-color: var(--sl-accent); }

.sl-header-search .search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sl-text-3);
    pointer-events: none;
    line-height: 0;
}

/* Icon buttons */
.sl-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--sl-text-2);
    transition: color var(--sl-fast), background var(--sl-fast);
}

.sl-icon-btn:hover { color: var(--sl-text); background: var(--sl-bg-2); }

/* ========================================
   CSS-Only Mobile Menu
   ======================================== */
.sl-nav-check { display: none; }

.sl-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 8px 6px;
    cursor: pointer;
    border-radius: 6px;
}

.sl-hamburger span {
    display: block;
    height: 2px;
    background: var(--sl-text-2);
    border-radius: 1px;
    transition: transform 0.2s var(--sl-ease), opacity 0.2s;
}

.sl-nav-check:checked ~ .sl-topbar .sl-hamburger span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.sl-nav-check:checked ~ .sl-topbar .sl-hamburger span:nth-child(2) { opacity: 0; }
.sl-nav-check:checked ~ .sl-topbar .sl-hamburger span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.sl-mobile-nav {
    max-height: 0;
    overflow: hidden;
    background: var(--sl-bg-0);
    border-top: 1px solid var(--sl-line);
    transition: max-height 0.25s var(--sl-ease);
}

.sl-nav-check:checked ~ .sl-mobile-nav {
    max-height: 400px;
}

.sl-mobile-nav-inner {
    padding: 8px 12px 12px;
    max-width: 1400px;
    margin: 0 auto;
}

.sl-mobile-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    color: var(--sl-text-2);
    border-radius: var(--sl-r-sm);
    font-size: 0.875rem;
    transition: color var(--sl-fast), background var(--sl-fast);
}

.sl-mobile-nav a:hover,
.sl-mobile-nav a.active { color: var(--sl-accent); background: var(--sl-accent-glow); }

.sl-mobile-nav .sl-nav-divider {
    height: 1px;
    background: var(--sl-line);
    margin: 6px 0;
}

/* Mobile search overlay */
.sl-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0,0,0,0.85);
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 20vh;
}

.sl-search-overlay.is-open { display: flex; }

.sl-search-overlay form {
    position: relative;
    width: 90%;
    max-width: 480px;
}

.sl-search-overlay input {
    width: 100%;
    padding: 14px 48px 14px 16px;
    border: 2px solid var(--sl-accent);
    border-radius: var(--sl-r);
    background: var(--sl-bg-2);
    color: var(--sl-text);
    font-size: 1rem;
    outline: none;
}

.sl-search-close {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sl-text-3);
}

/* ========================================
   Category Chips
   ======================================== */
.sl-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px 0 12px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.sl-chips::-webkit-scrollbar { display: none; }

.sl-chip {
    flex-shrink: 0;
    padding: 5px 14px;
    border: 1px solid var(--sl-line);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--sl-text-2);
    white-space: nowrap;
    transition: all var(--sl-fast) var(--sl-ease);
}

.sl-chip:hover { border-color: var(--sl-accent); color: var(--sl-accent); }
.sl-chip.active { background: var(--sl-accent); border-color: var(--sl-accent); color: #fff; }

/* ========================================
   Video Grid
   ======================================== */
.sl-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    content-visibility: auto;
    contain-intrinsic-size: auto 300px;
}

/* ========================================
   Video Card
   ======================================== */
.sl-card {
    contain: layout style paint;
    border-radius: var(--sl-r);
    overflow: hidden;
    border-left: 2px solid transparent;
    transition: border-color var(--sl-fast) var(--sl-ease);
}

.sl-card:hover { border-left-color: var(--sl-accent); }

.sl-card-thumb {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--sl-bg-2);
}

.sl-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s var(--sl-ease);
}

.sl-card:hover .sl-card-thumb img { transform: scale(1.04); }

/* Duration badge — accent background */
.sl-card-dur {
    position: absolute;
    bottom: 6px;
    right: 6px;
    padding: 2px 6px;
    background: var(--sl-accent-dim);
    color: #fff;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--sl-r-sm);
    line-height: 1.3;
}

/* Badges (views, rating) */
.sl-card-badges {
    position: absolute;
    top: 6px;
    left: 6px;
    display: flex;
    gap: 4px;
}

.sl-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 6px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 0.625rem;
    border-radius: var(--sl-r-sm);
    backdrop-filter: blur(4px);
}

.sl-badge--accent { color: var(--sl-accent-light); }

/* Play triangle (minimal) */
.sl-card-play {
    position: absolute;
    bottom: 8px;
    left: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.6);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--sl-fast);
}

.sl-card:hover .sl-card-play { opacity: 1; }

.sl-card-play svg {
    width: 12px;
    height: 12px;
    fill: #fff;
    margin-left: 2px;
}

/* Card info */
.sl-card-info {
    padding: 6px 4px 8px;
}

.sl-card-title {
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sl-card-title a { color: var(--sl-text); }
.sl-card-title a:hover { color: var(--sl-accent-light); }

.sl-card-sub {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 3px;
    font-size: 0.6875rem;
    color: var(--sl-text-3);
}

/* ========================================
   Section Headings
   ======================================== */
.sl-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.sl-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.sl-page-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--sl-accent);
    display: inline-block;
}

/* ========================================
   Breadcrumbs
   ======================================== */
.sl-breadcrumbs {
    font-size: 0.75rem;
    color: var(--sl-text-3);
    margin-bottom: 12px;
    padding: 6px 0;
}

.sl-breadcrumbs a { color: var(--sl-text-2); }
.sl-breadcrumbs a:hover { color: var(--sl-accent); }
.sl-breadcrumbs .sep { margin: 0 6px; opacity: 0.4; }

/* ========================================
   Single Video Page
   ======================================== */
.sl-player-frame {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--sl-r);
    overflow: hidden;
    margin-bottom: 16px;
}

.sl-player-frame iframe,
.sl-player-frame video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.sl-player-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sl-carousel-wrap { margin-bottom: 16px; }

.sl-detail-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 10px;
}

.sl-meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.75rem;
    color: var(--sl-text-2);
}

.sl-meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.sl-meta-chip--rating { color: var(--sl-accent-light); }

.sl-rating-bar {
    display: inline-block;
    width: 48px;
    height: 4px;
    background: var(--sl-bg-3);
    border-radius: 2px;
    overflow: hidden;
    vertical-align: middle;
    margin-left: 4px;
}

.sl-rating-fill {
    display: block;
    height: 100%;
    background: var(--sl-accent);
    border-radius: 2px;
}

/* Download button */
.sl-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--sl-accent);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--sl-r);
    transition: background var(--sl-fast);
    margin-bottom: 16px;
}

.sl-download-btn:hover { background: var(--sl-accent-light); }

/* Description */
.sl-desc {
    margin-bottom: 16px;
}

.sl-desc-body {
    max-height: 120px;
    overflow: hidden;
    color: var(--sl-text-2);
    font-size: 0.8125rem;
    line-height: 1.6;
    transition: max-height 0.3s var(--sl-ease);
}

.sl-desc-body.is-expanded { max-height: 2000px; }

.sl-desc-toggle {
    margin-top: 6px;
    color: var(--sl-accent);
    font-size: 0.75rem;
    font-weight: 600;
}

/* Detail sections (Tags, Stars) */
.sl-detail-section {
    margin-bottom: 16px;
}

.sl-detail-section-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--sl-text-2);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.sl-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.sl-tag {
    padding: 4px 10px;
    background: var(--sl-bg-2);
    border: 1px solid var(--sl-line);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--sl-text-2);
    transition: all var(--sl-fast);
}

.sl-tag:hover { border-color: var(--sl-accent); color: var(--sl-accent); }

.sl-stars-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sl-star-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px 4px 4px;
    background: var(--sl-bg-2);
    border: 1px solid var(--sl-line);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--sl-text-2);
    transition: border-color var(--sl-fast);
}

.sl-star-pill:hover { border-color: var(--sl-accent); }

.sl-star-pill img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.sl-star-pill-placeholder {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--sl-bg-3);
}

/* Related section */
.sl-related {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--sl-line);
}

/* ========================================
   Archive Pages
   ======================================== */
.sl-archive-head {
    margin-bottom: 16px;
}

.sl-archive-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.sl-archive-desc {
    margin-top: 4px;
    font-size: 0.8125rem;
    color: var(--sl-text-2);
}

/* Star archive header */
.sl-star-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.sl-star-head-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--sl-accent);
}

/* ========================================
   Term Grid (Stars, Categories pages)
   ======================================== */
.sl-term-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.sl-term-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--sl-bg-2);
    border: 1px solid var(--sl-line);
    border-radius: var(--sl-r);
    transition: border-color var(--sl-fast);
}

.sl-term-card:hover { border-color: var(--sl-accent); }

.sl-term-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--sl-bg-3);
    flex-shrink: 0;
    object-fit: cover;
}

.sl-term-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--sl-text);
}

.sl-term-count {
    font-size: 0.6875rem;
    color: var(--sl-text-3);
}

/* Tag cloud */
.sl-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* ========================================
   Pagination
   ======================================== */
.sl-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
    padding: 12px 0;
}

.sl-pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    border-radius: var(--sl-r-sm);
    font-size: 0.8125rem;
    color: var(--sl-text-2);
    transition: all var(--sl-fast);
}

.sl-pagination a.page-numbers:hover { background: var(--sl-bg-2); color: var(--sl-text); }
.sl-pagination .page-numbers.current { background: var(--sl-accent); color: #fff; font-weight: 600; }
.sl-pagination .page-numbers.dots { color: var(--sl-text-3); }

/* ========================================
   404 Page
   ======================================== */
.sl-404 {
    text-align: center;
    padding: 60px 16px;
}

.sl-404-num {
    font-size: 4rem;
    font-weight: 800;
    color: var(--sl-accent);
    line-height: 1;
}

.sl-404-text {
    margin-top: 12px;
    font-size: 1rem;
    color: var(--sl-text-2);
}

.sl-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--sl-accent);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--sl-r);
    margin-top: 20px;
    transition: background var(--sl-fast);
}

.sl-btn:hover { background: var(--sl-accent-light); }

/* ========================================
   Footer
   ======================================== */
.sl-footer {
    background: var(--sl-footer-bg);
    border-top: 1px solid var(--sl-line);
    padding: 24px 12px;
    margin-top: auto;
}

.sl-footer-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.sl-footer-desc {
    font-size: 0.8125rem;
    color: var(--sl-text-3);
    margin-bottom: 12px;
    line-height: 1.6;
}

.sl-footer-copy {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--sl-text-3);
    max-width: 1400px;
    margin: 12px auto 0;
}

/* ========================================
   Mobile Bottom Navigation
   ======================================== */
.sl-bottombar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 90;
    display: flex;
    justify-content: space-around;
    background: var(--sl-bg-0);
    border-top: 1px solid var(--sl-line);
    padding: 4px 0 env(safe-area-inset-bottom, 4px);
}

.sl-bottombar a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 8px;
    font-size: 0.625rem;
    color: var(--sl-text-3);
    transition: color var(--sl-fast);
}

.sl-bottombar a:hover,
.sl-bottombar a.active { color: var(--sl-accent); }

.has-bottom-nav { padding-bottom: 60px; }
.has-bottom-nav .sl-footer { padding-bottom: 60px; }

/* ========================================
   Search Form
   ======================================== */
.sl-searchform {
    position: relative;
}

.sl-searchform input {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid var(--sl-line);
    border-radius: var(--sl-r);
    background: var(--sl-bg-2);
    color: var(--sl-text);
    font-size: 0.875rem;
    outline: none;
}

.sl-searchform input:focus { border-color: var(--sl-accent); }

/* ========================================
   Responsive
   ======================================== */
@media (min-width: 540px) {
    .sl-grid { grid-template-columns: repeat(3, 1fr); }
    .sl-term-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
    .sl-grid { grid-template-columns: repeat(4, 1fr); }
    .sl-content { padding: 16px 16px 40px; }
    .sl-topbar { padding: 0 16px; }
    .sl-bottombar { display: none; }
    .has-bottom-nav { padding-bottom: 0; }
    .has-bottom-nav .sl-footer { padding-bottom: 24px; }
    .sl-hamburger { display: none; }
    .sl-header-search { display: block; }
    .sl-btn-search-mobile { display: none; }
    .sl-term-grid { grid-template-columns: repeat(4, 1fr); }
    .sl-footer { padding: 24px 16px; }
}

@media (min-width: 1024px) {
    .sl-grid { grid-template-columns: repeat(5, 1fr); gap: 14px; }
    .sl-content { padding: 20px 24px 48px; }
    .sl-topbar { padding: 0 24px; height: 56px; }
    .sl-term-grid { grid-template-columns: repeat(5, 1fr); }
    .sl-footer { padding: 32px 24px; }
}

@media (min-width: 1280px) {
    .sl-grid { grid-template-columns: repeat(6, 1fr); }
    .sl-term-grid { grid-template-columns: repeat(6, 1fr); }
}

/* ========================================
   Print
   ======================================== */
@media print {
    .sl-header, .sl-bottombar, .sl-pagination, .sl-mobile-nav, .sl-search-overlay { display: none !important; }
    body { background: #fff; color: #000; }
}