:root {
  --bg: #0f1113;
  --bg-soft: #15181b;
  --panel: #191c20;
  --panel-2: #20242a;
  --panel-3: #111315;
  --line: #343940;
  --line-strong: #4a5058;
  --text: #f5f6f7;
  --muted: #9da4ad;
  --muted-2: #737b85;
  --accent: #4d8dff;
  --accent-2: #2e6bdc;
  --male: #4c91ff;
  --female: #ef5e9a;
  --success: #35b86f;
  --warning: #e6a83c;
  --danger: #ec5b63;
  --radius: 8px;
  --shadow: 0 12px 30px rgba(0,0,0,.25);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

.site-header {
  height: 72px;
  border-bottom: 1px solid var(--line);
  background: #111315;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -.04em;
  color: #ffffff;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.desktop-nav a {
  color: #b9c0c8;
  padding: 10px 11px;
  border-bottom: 2px solid transparent;
  font-size: 14px;
}
.desktop-nav a:hover,
.desktop-nav a.active { color: #fff; border-color: var(--accent); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.btn {
  border: 1px solid var(--line-strong);
  background: #17191c;
  color: var(--text);
  min-height: 40px;
  padding: 0 15px;
  border-radius: 6px;
  font-weight: 650;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn:hover { border-color: #6a727c; background: #1b1f23; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn.ghost { background: transparent; }
.btn.danger { border-color: #6b2f34; color: #ffabb0; }
.btn.small { min-height: 34px; padding: 0 11px; font-size: 13px; }
.btn.icon { width: 40px; padding: 0; }

#main { min-height: calc(100vh - 132px); }
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 22px 20px 32px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
}
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: #fff; }

.container { max-width: var(--max); margin: 0 auto; padding: 32px 20px; }
.page-title { margin: 0 0 6px; font-size: 31px; letter-spacing: -.03em; }
.page-subtitle { margin: 0; color: var(--muted); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 78px 20px 66px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  gap: 62px;
  align-items: center;
}
.hero h1 { margin: 0 0 16px; font-size: clamp(44px, 6vw, 76px); line-height: .97; letter-spacing: -.06em; }
.hero p { max-width: 660px; color: #bac1ca; font-size: 18px; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-note { margin-top: 16px; color: var(--muted-2); font-size: 13px; }
.hero-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 24px;
  border-radius: 8px;
}
.hero-panel h2 { margin: 0 0 6px; font-size: 20px; }
.feature-list { margin: 18px 0 0; padding: 0; list-style: none; }
.feature-list li { padding: 12px 0; border-top: 1px solid var(--line); color: #c7ccd2; }
.feature-list li strong { color: #fff; display: block; margin-bottom: 2px; }

.auth-wrap {
  min-height: calc(100vh - 132px);
  display: grid;
  place-items: center;
  padding: 38px 20px;
}
.auth-card { width: min(100%, 520px); background: var(--panel); border: 1px solid var(--line); padding: 26px; border-radius: 8px; box-shadow: var(--shadow); }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); margin: -26px -26px 24px; }
.auth-tabs button { border: 0; background: #131518; color: var(--muted); height: 54px; border-bottom: 2px solid transparent; }
.auth-tabs button.active { color: #fff; border-bottom-color: var(--accent); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 650; margin-bottom: 7px; color: #d7dbe0; }
.field input,
.field select,
.field textarea {
  width: 100%;
  background: #0f1113;
  color: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 11px 12px;
  outline: none;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--accent); }
.help { color: var(--muted-2); font-size: 12px; margin-top: 6px; }
.error { color: #ff9ea4; font-size: 13px; margin: 8px 0; }
.success { color: #8fddaF; font-size: 13px; margin: 8px 0; }
.captcha-slot { min-height: 66px; margin: 8px 0 4px; display: flex; justify-content: flex-start; }
.checkbox-row { display: flex; gap: 9px; align-items: flex-start; font-size: 13px; color: var(--muted); margin: 8px 0 16px; }
.checkbox-row input { margin-top: 3px; }

.app-layout { max-width: 1320px; margin: 0 auto; padding: 24px 20px 40px; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 22px; }
.sidebar { border: 1px solid var(--line); background: var(--panel); height: fit-content; padding: 10px; border-radius: 8px; position: sticky; top: 94px; }
.side-link { display: flex; align-items: center; gap: 10px; width: 100%; border: 0; background: transparent; color: #aeb6bf; text-align: left; padding: 11px 12px; border-radius: 5px; font-weight: 600; }
.side-link:hover, .side-link.active { background: #24282d; color: #fff; }
.side-label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: #646c76; padding: 12px 12px 6px; }
.content { min-width: 0; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.panel-pad { padding: 20px; }
.toolbar { border-bottom: 1px solid var(--line); padding: 14px 16px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.toolbar .tab { border: 0; background: transparent; color: var(--muted); padding: 9px 11px; border-bottom: 2px solid transparent; }
.toolbar .tab.active { color: #fff; border-bottom-color: var(--accent); }
.filter-group { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-btn { border: 1px solid var(--line-strong); background: #131518; color: #adb4bc; padding: 8px 11px; border-radius: 5px; }
.filter-btn.active { border-color: var(--accent); color: #fff; }

.user-list { display: flex; flex-direction: column; }
.user-row { display: grid; grid-template-columns: 50px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 13px 16px; border-top: 1px solid var(--line); }
.user-row:first-child { border-top: 0; }
.user-row:hover { background: #16191c; }
.avatar { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; background: #2a2f35; border: 1px solid var(--line-strong); }
.avatar.placeholder { display: grid; place-items: center; font-size: 18px; font-weight: 750; color: #d8dde2; }
.user-name { font-weight: 700; }
.user-name.male { color: var(--male); }
.user-name.female { color: var(--female); }
.user-meta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.status { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #626a74; margin-right: 6px; }
.status.online { background: var(--success); }
.empty { padding: 44px 24px; text-align: center; color: var(--muted); }
.empty h3 { color: #fff; margin: 0 0 5px; }

.message-layout { display: grid; grid-template-columns: 290px minmax(0,1fr); min-height: 640px; }
.thread-list { border-right: 1px solid var(--line); }
.thread-row { display: grid; grid-template-columns: 42px minmax(0,1fr); gap: 10px; padding: 13px; border-bottom: 1px solid var(--line); cursor: pointer; }
.thread-row:hover, .thread-row.active { background: #15181b; }
.thread-title { font-weight: 700; }
.thread-preview { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--muted); font-size: 12px; margin-top: 2px; }
.chat-pane { display: flex; flex-direction: column; min-width: 0; }
.chat-head { min-height: 70px; display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.chat-head-main { min-width: 0; }
.chat-head-title { font-weight: 750; }
.chat-head-sub { color: var(--muted); font-size: 12px; }
.messages { flex: 1; min-height: 420px; overflow: auto; padding: 18px; display: flex; flex-direction: column; gap: 9px; background: #111315; }
.message { max-width: min(78%, 620px); padding: 9px 11px; border: 1px solid var(--line); background: #1b1e22; border-radius: 7px; align-self: flex-start; }
.message.mine { align-self: flex-end; background: #17315a; border-color: #25528e; }
.message img { border-radius: 5px; max-height: 260px; width: auto; margin-bottom: 5px; }
.message-time { color: #838c97; font-size: 10px; margin-top: 3px; }
.typing { min-height: 19px; padding: 0 18px 8px; color: var(--muted); font-size: 12px; }
.composer { border-top: 1px solid var(--line); padding: 12px; display: grid; grid-template-columns: auto minmax(0,1fr) auto; gap: 8px; align-items: end; }
.composer textarea { min-height: 42px; max-height: 120px; resize: vertical; background: #0f1113; color: #fff; border: 1px solid var(--line-strong); border-radius: 6px; padding: 10px 11px; }
.file-label { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--line-strong); border-radius: 6px; cursor: pointer; }
.file-label input { display: none; }

.cards { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.profile-card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.profile-photo { aspect-ratio: 4 / 4.6; background: #0f1113; object-fit: cover; width: 100%; }
.profile-body { padding: 14px; }
.profile-name { font-weight: 800; font-size: 17px; }
.profile-bio { margin: 6px 0 12px; color: var(--muted); font-size: 13px; min-height: 38px; }
.profile-actions { display: flex; gap: 8px; }

.friend-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.friend-item { display: grid; grid-template-columns: 44px minmax(0,1fr) auto; gap: 10px; align-items: center; padding: 13px; border-top: 1px solid var(--line); }
.friend-item:first-child { border-top: 0; }
.friend-section h3 { margin: 0; font-size: 16px; }

.profile-layout { display: grid; grid-template-columns: 290px minmax(0,1fr); gap: 18px; }
.profile-side { background: var(--panel); border: 1px solid var(--line); padding: 16px; border-radius: 8px; height: fit-content; }
.profile-main { background: var(--panel); border: 1px solid var(--line); padding: 20px; border-radius: 8px; }
.photo-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.photo-cell { position: relative; aspect-ratio: 1 / 1; overflow: hidden; border: 1px solid var(--line); background: #101214; }
.photo-cell img { width: 100%; height: 100%; object-fit: cover; }
.photo-cell button { position: absolute; right: 6px; top: 6px; }
.avatar-lg { width: 90px; height: 90px; border-radius: 50%; object-fit: cover; border: 1px solid var(--line-strong); margin-bottom: 12px; }
.profile-side h2 { margin: 0 0 2px; font-size: 22px; }
.profile-side p { color: var(--muted); margin: 0 0 14px; }
.rule { border-top: 1px solid var(--line); margin: 20px 0; }

.guest-card { max-width: 560px; margin: 24px auto 0; padding: 20px; }
.random-chat { display: grid; grid-template-columns: minmax(0,1fr) 300px; min-height: 620px; }
.random-stage { display: flex; flex-direction: column; }
.random-body { flex: 1; padding: 24px; background: #111315; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.random-body h2 { margin: 0 0 6px; }
.random-body p { margin: 0 0 18px; color: var(--muted); }
.random-aside { border-left: 1px solid var(--line); padding: 18px; background: var(--panel); }
.queue-box { border: 1px solid var(--line); padding: 14px; background: #121417; }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.7); display: grid; place-items: center; padding: 20px; z-index: 100; }
.modal { width: min(100%, 560px); max-height: 90vh; overflow: auto; background: var(--panel); border: 1px solid var(--line-strong); border-radius: 8px; box-shadow: var(--shadow); }
.modal-head { padding: 15px 18px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.modal-head h3 { margin: 0; }
.modal-body { padding: 18px; }

.mobile-nav { display: none; }
.notice { padding: 12px 14px; border-left: 3px solid var(--accent); background: #15191f; color: #c4cad1; font-size: 13px; }
.notice.warning { border-left-color: var(--warning); }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .site-header { padding: 0 18px; }
  .app-layout { grid-template-columns: 1fr; padding-bottom: 90px; }
  .sidebar { display: none; }
  .mobile-nav { position: fixed; bottom: 0; left: 0; right: 0; height: 64px; background: #111315; border-top: 1px solid var(--line); display: grid; grid-auto-columns: 1fr; grid-auto-flow: column; z-index: 50; }
  .mobile-nav a { display: grid; place-items: center; color: var(--muted); font-size: 11px; gap: 2px; }
  .mobile-nav a.active { color: #fff; }
  .mobile-nav .nav-icon { font-size: 18px; line-height: 1; }
  .cards { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .random-chat { grid-template-columns: 1fr; }
  .random-aside { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 740px) {
  .hero { grid-template-columns: 1fr; padding-top: 54px; gap: 28px; }
  .hero h1 { font-size: 52px; }
  .hero p { font-size: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
  .message-layout { grid-template-columns: 1fr; }
  .thread-list { max-height: 280px; overflow: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .cards { grid-template-columns: 1fr; }
  .friend-grid { grid-template-columns: 1fr; }
  .profile-layout { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .site-footer { margin-bottom: 64px; }
}