:root {
  --bg-page: #f4f4f5;
  --bg-surface: #ffffff;
  --bg-tertiary: #ebebed;
  --bg-pill: #efeff1;
  --bg-pill-active: #d9d9dd;
  --border: #e5e6e8;
  --border-light: #d6d8db;
  --text-primary: #1a1c1f;
  --text-secondary: #6b7280;
  --text-muted: #9aa0a8;
  --accent: #2f80ed;
  --premium: #f6c945;
  --premium-text: #4a3a00;
  --upload: #f1616a;
  --heart: #ff4d6d;
  --radius: 10px;
  --header-h: 64px;
  --sidebar-w: 220px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 14px;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
svg { display: inline-block; vertical-align: middle; flex-shrink: 0; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: #cfcfd3; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #b8b8bd; }

/* ════════ 헤더 ════════ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 20px;
  padding: 0 22px;
}
.header .menu-btn {
  display: none; background: none; border: none; color: var(--text-secondary);
  font-size: 22px; cursor: pointer;
}
.logo { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.logo .logo-mark {
  display: grid; grid-template-columns: 12px 12px; grid-auto-rows: 12px; gap: 3px;
}
.logo .logo-mark span { border-radius: 4px; }
.logo .logo-mark .m1 { background: #2f80ed; }
.logo .logo-mark .m2 { background: #16b8a6; }
.logo .logo-mark .m3 { background: #8b5cf6; }
.logo .logo-mark .m4 { background: #f1616a; }
.logo .logo-text { font-size: 20px; font-weight: 800; letter-spacing: .5px; color: var(--text-primary); }

.search {
  position: absolute; left: 50%; transform: translateX(-50%);
  width: 400px; max-width: 400px;
  display: flex; align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid transparent;
  border-radius: 22px; padding: 0 16px; height: 42px;
  transition: background .15s, border-color .15s;
}
.search:focus-within { background: var(--bg-surface); border-color: var(--border-light); }
.search .ico { color: var(--text-muted); font-size: 15px; margin-right: 8px; }
.search input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text-primary); font-size: 14px;
}
.search input::placeholder { color: var(--text-muted); }

.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.pill-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: 22px; font-size: 13px; font-weight: 700;
  border: none; cursor: pointer; white-space: nowrap; letter-spacing: .3px;
}
.pill-premium { background: var(--premium); color: var(--premium-text); }
.pill-premium:hover { filter: brightness(1.04); }
.pill-upload { background: var(--upload); color: #fff; }
.pill-upload:hover { filter: brightness(1.04); }
.user-chip { display: flex; align-items: center; gap: 9px; }
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-tertiary); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); font-weight: 700; overflow: hidden; flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.user-chip .uname { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.link-btn { font-size: 14px; font-weight: 600; color: var(--text-secondary); padding: 9px 6px; }
.link-btn:hover { color: var(--text-primary); }

/* ════════ 사이드바 ════════ */
.sidebar {
  position: fixed; top: var(--header-h); left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  overflow-y: auto; padding: 14px 12px 40px; z-index: 90;
}
.sidebar a.nav-item {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 12px; color: var(--text-secondary); border-radius: 8px;
  font-size: 13.5px; font-weight: 600; letter-spacing: .3px;
  text-transform: uppercase; transition: background .12s, color .12s;
}
.sidebar a.nav-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.sidebar a.nav-item.active { background: var(--bg-tertiary); color: var(--text-primary); }
.sidebar a.nav-item .ico { font-size: 16px; width: 20px; text-align: center; }
.sidebar a.nav-premium { background: var(--premium); color: var(--premium-text); }
.sidebar a.nav-premium:hover { background: var(--premium); filter: brightness(1.04); color: var(--premium-text); }
.sidebar hr { border: none; border-top: 1px solid var(--border); margin: 12px 8px; }

/* 필터 토글 박스 */
.filter-box {
  background: var(--bg-page); border: 1px solid var(--border);
  border-radius: 12px; padding: 10px 12px; margin: 8px 2px;
}
.toggle-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 2px; font-size: 13px; color: var(--text-secondary);
}
.toggle-row label { cursor: pointer; flex: 1; }
.switch { position: relative; width: 36px; height: 20px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute; inset: 0; background: #cfcfd3; border-radius: 20px;
  transition: background .15s; cursor: pointer;
}
.switch .slider::before {
  content: ''; position: absolute; width: 16px; height: 16px; left: 2px; top: 2px;
  background: #fff; border-radius: 50%; transition: transform .15s;
  box-shadow: 0 1px 2px rgba(0,0,0,.25);
}
.switch input:checked + .slider { background: var(--accent); }
.switch input:checked + .slider::before { transform: translateX(16px); }

/* 카테고리 목록 */
.cat-list { padding: 4px 6px; }
.cat-list a {
  display: block; padding: 7px 6px; font-size: 13.5px; color: var(--text-secondary);
}
.cat-list a:hover { color: var(--text-primary); }
.cat-list a.active { color: var(--text-primary); font-weight: 700; }
.cat-list .view-more { color: var(--accent); font-weight: 700; }

/* ════════ 메인 ════════ */
.main {
  margin-left: var(--sidebar-w); margin-top: var(--header-h);
  padding: 26px 28px 60px; min-height: calc(100vh - var(--header-h));
}
.page-title { font-size: 22px; font-weight: 800; margin-bottom: 18px; }

/* 필터 pill */
.pills { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.pills a, .pills .pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: 20px; font-size: 13px; font-weight: 700;
  background: var(--bg-pill); color: var(--text-secondary); letter-spacing: .3px;
  border: none; cursor: pointer;
}
.pills a:hover { background: var(--bg-pill-active); color: var(--text-primary); }
.pills a.active { background: var(--bg-pill-active); color: var(--text-primary); }

/* 영상 그리드 */
.video-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px 18px;
}
.video-card { cursor: pointer; }
.video-thumb {
  position: relative; aspect-ratio: 16/9;
  background: #d9dadd; border-radius: var(--radius); overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; }
.video-thumb .placeholder {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 30px; color: #b6b8bd;
}
.video-thumb::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 46px;
  background: linear-gradient(to top, rgba(0,0,0,.55), transparent); pointer-events: none;
}
.ov { position: absolute; z-index: 2; color: #fff; font-size: 12px; font-weight: 700; }
.ov-bl { left: 10px; bottom: 8px; display: flex; align-items: center; gap: 12px; text-shadow: 0 1px 2px rgba(0,0,0,.5); }
.ov-bl span { display: inline-flex; align-items: center; gap: 4px; }
.ov-br { right: 10px; bottom: 8px; text-shadow: 0 1px 2px rgba(0,0,0,.5); }
.ov-tl { left: 10px; top: 10px; background: rgba(20,22,26,.78); padding: 3px 8px; border-radius: 5px; }
.ov-tr { right: 10px; top: 10px; }
.crown { color: var(--premium); font-size: 16px; filter: drop-shadow(0 1px 1px rgba(0,0,0,.4)); }
.price-tag { background: var(--premium); color: var(--premium-text); padding: 3px 8px; border-radius: 5px; }

.video-meta { padding: 11px 2px 0; display: flex; gap: 11px; }
.video-meta .ch-icon {
  width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0;
  background: var(--bg-tertiary) center/cover no-repeat; border: 1px solid var(--border);
}
.video-info { min-width: 0; flex: 1; }
.video-title {
  font-size: 14px; font-weight: 700; color: var(--text-primary); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 5px;
}
.video-sub { font-size: 12.5px; color: var(--text-muted); }
.video-sub.ch { color: var(--text-secondary); font-weight: 600; margin-bottom: 1px; }
.dots { color: var(--text-muted); font-size: 18px; line-height: 1; padding: 2px; align-self: flex-start; }

/* 피처드 카드 (2x2) */
.video-card.featured { grid-column: span 2; grid-row: span 2; }
.video-card.featured .video-thumb { aspect-ratio: auto; height: 100%; min-height: 320px; }
.video-card.featured .feat-overlay {
  position: absolute; inset: 0; z-index: 3; padding: 26px;
  display: flex; flex-direction: column; justify-content: space-between;
  background: linear-gradient(to bottom, rgba(0,0,0,.25), transparent 40%, transparent 60%, rgba(0,0,0,.4));
}
.video-card.featured .feat-title { font-size: 32px; font-weight: 800; color: #fff; text-shadow: 0 2px 8px rgba(0,0,0,.5); max-width: 70%; }
.video-card.featured .feat-badge {
  align-self: flex-start; background: linear-gradient(135deg, #8b5cf6, #f1616a);
  color: #fff; font-size: 11px; font-weight: 800; padding: 5px 12px; border-radius: 14px;
  position: absolute; top: 22px; right: 22px; letter-spacing: .5px;
}
.feat-watch {
  align-self: flex-start; background: var(--accent); color: #fff;
  padding: 10px 22px; border-radius: 22px; font-size: 13px; font-weight: 800; letter-spacing: .5px;
}

/* 빈 상태 */
.empty-state { grid-column: 1 / -1; text-align: center; padding: 70px 20px; color: var(--text-muted); }
.empty-state .ico { font-size: 46px; margin-bottom: 12px; }
.empty-state p { color: var(--text-secondary); }

/* 알림 배너 */
.notice-bar {
  background: #fff7e6; border: 1px solid #f3d99b; color: #8a6d1b;
  padding: 12px 16px; border-radius: var(--radius); margin-bottom: 20px; font-size: 13px;
}
.notice-bar code { background: #f3e6c4; padding: 1px 6px; border-radius: 4px; }

/* 인증 카드 */
.auth-wrap { display: flex; justify-content: center; padding: 30px 0; }
.auth-card {
  width: 100%; max-width: 420px;
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 32px 28px;
}
.auth-card h1 { font-size: 22px; font-weight: 800; margin-bottom: 6px; text-align: center; }
.auth-card .sub { font-size: 13px; color: var(--text-secondary); text-align: center; margin-bottom: 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.field input {
  width: 100%; height: 44px; padding: 0 14px;
  background: var(--bg-page); border: 1px solid var(--border); border-radius: 9px;
  font-size: 14px; color: var(--text-primary); outline: none; transition: border-color .15s;
}
.field input:focus { border-color: var(--accent); background: var(--bg-surface); }
.field .hint { font-size: 12px; color: var(--text-muted); margin-top: 5px; }
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 46px; }
.pw-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; color: var(--text-muted);
  padding: 8px; display: flex; align-items: center;
}
.pw-toggle:hover { color: var(--text-secondary); }
.pw-toggle .i-off { display: none; }
.pw-toggle.on .i-eye { display: none; }
.pw-toggle.on .i-off { display: flex; }
.btn-block {
  width: 100%; height: 46px; border: none; border-radius: 23px;
  background: var(--accent); color: #fff; font-size: 15px; font-weight: 700; cursor: pointer;
  transition: background .15s;
}
.btn-block:hover { background: var(--accent-hover); }
.auth-alt { text-align: center; font-size: 13px; color: var(--text-secondary); margin-top: 18px; }
.auth-alt a { color: var(--accent); font-weight: 700; }
.form-error {
  background: #fdeceb; border: 1px solid #f5c2c0; color: #b42318;
  padding: 11px 14px; border-radius: 9px; font-size: 13px; margin-bottom: 18px;
}
.signup-bonus {
  background: #fff7e6; border: 1px solid #f3d99b; color: #8a6d1b;
  padding: 11px 14px; border-radius: 9px; font-size: 13px; margin-bottom: 18px; text-align: center;
}
.info-card {
  max-width: 480px; margin: 40px auto; text-align: center;
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: 14px; padding: 40px 28px;
}
.info-card .ico { color: var(--text-muted); margin-bottom: 14px; }
.info-card h1 { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.info-card p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }

/* 반응형 */
@media (max-width: 1200px) { .video-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .video-card.featured { grid-column: span 2; grid-row: span 1; }
  .video-card.featured .video-thumb { min-height: 0; aspect-ratio: 16/9; }
  .video-card.featured .feat-title { font-size: 24px; }
}
@media (max-width: 820px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; box-shadow: 0 0 30px rgba(0,0,0,.12); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; padding: 16px; }
  .header .menu-btn { display: block; }
  .header-actions .hide-mobile { display: none; }
  .search { position: static; transform: none; flex: 1; width: auto; max-width: none; height: 38px; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr 1fr; gap: 14px 12px; }
  .video-card.featured { grid-column: span 2; }
  .header { gap: 12px; padding: 0 14px; }
}