:root {
  --bg: #070914;
  --panel: rgba(15, 20, 39, 0.76);
  --panel-strong: rgba(18, 24, 48, 0.92);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f7f8ff;
  --muted: #9ea7c7;
  --brand1: #2a7cff;
  --brand2: #9637ff;
  --brand3: #ff3d9a;
  --success: #35d07f;
  --danger: #ff5570;
  --warning: #ffc857;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(42, 124, 255, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(255, 61, 154, 0.14), transparent 28%),
    linear-gradient(135deg, #050610, #0b1025 48%, #090916);
  color: var(--text);
}
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.app-shell { min-height: 100vh; }
.glass-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.toast {
  position: fixed;
  left: 50%;
  top: 16px;
  transform: translateX(-50%) translateY(-140%);
  z-index: 9999;
  min-width: min(92vw, 420px);
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(16, 22, 42, 0.96);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.error { border-color: rgba(255, 85, 112, 0.6); }
.toast.success { border-color: rgba(53, 208, 127, 0.6); }

.auth-view, .interest-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 26px 16px;
  gap: 22px;
}
.brand-card { text-align: center; }
.logo-mark {
  width: 82px;
  height: 82px;
  margin: 0 auto 12px;
  display: grid;
  place-items: center;
  border-radius: 24px;
  font-size: 48px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--brand1), var(--brand2), var(--brand3));
  box-shadow: 0 0 50px rgba(150, 55, 255, 0.45);
}
.brand-card h1, .top-mini-brand { margin: 0; font-weight: 900; letter-spacing: -0.04em; }
.brand-card h1 { font-size: clamp(42px, 12vw, 72px); }
.brand-card span, .top-mini-brand span, .logo-mini { color: #ff43b6; }
.brand-card p { margin: 6px 0 0; color: var(--muted); }
.logo-mini {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  color: white !important;
  background: linear-gradient(135deg, var(--brand1), var(--brand2), var(--brand3));
  font-weight: 900;
}
.top-mini-brand { display: flex; align-items: center; gap: 10px; font-size: 22px; }
.auth-card, .interest-card { width: min(100%, 440px); padding: 22px; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.tab-btn, .pill, .secondary-btn, .link-btn, .google-btn, .icon-btn, .nav-btn, .bottom-btn, .create-type, .mini-create, .danger-lite {
  border: 0;
  color: var(--text);
  background: transparent;
}
.tab-btn, .pill, .create-type {
  padding: 11px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
}
.tab-btn.active, .pill.active, .create-type.active {
  background: linear-gradient(135deg, rgba(42, 124, 255, 0.75), rgba(150, 55, 255, 0.75), rgba(255, 61, 154, 0.75));
}
.auth-form { display: grid; gap: 10px; }
label { color: var(--muted); font-size: 14px; }
input, textarea {
  width: 100%;
  padding: 13px 15px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(5, 8, 18, 0.58);
  color: var(--text);
  outline: none;
}
input:focus, textarea:focus { border-color: rgba(150, 55, 255, 0.8); box-shadow: 0 0 0 3px rgba(150, 55, 255, 0.18); }
.consent-row { display: flex; gap: 10px; align-items: flex-start; margin: 4px 0 8px; }
.consent-row input { width: auto; margin-top: 2px; }
.primary-btn {
  border: 0;
  border-radius: 14px;
  padding: 13px 16px;
  color: white;
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand1), var(--brand2), var(--brand3));
  box-shadow: 0 12px 30px rgba(150, 55, 255, 0.26);
}
.primary-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.secondary-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  border-radius: 13px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
}
.link-btn { color: #8ab8ff; padding: 8px; }
.google-btn {
  width: 100%;
  margin-top: 12px;
  padding: 13px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
}
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); margin: 16px 0 8px; }
.divider::before, .divider::after { content: ""; height: 1px; background: var(--border); flex: 1; }
.small-note { color: var(--muted); font-size: 13px; line-height: 1.45; }
.chip-grid { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.chip { border: 1px solid var(--border); border-radius: 999px; padding: 10px 13px; background: rgba(255, 255, 255, 0.06); color: var(--text); }
.chip.selected { background: linear-gradient(135deg, rgba(42, 124, 255, 0.8), rgba(255, 61, 154, 0.8)); }

.main-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}
.mobile-header { display: none; }
.side-nav {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 26px 20px;
  border-right: 1px solid var(--border);
  background: rgba(5, 8, 20, 0.78);
  backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.side-logo { display: flex; align-items: center; gap: 10px; font-size: 28px; }
.side-nav nav, .nav-extra { display: grid; gap: 8px; }
.nav-btn {
  width: 100%;
  padding: 13px 14px;
  border-radius: 14px;
  display: flex;
  gap: 12px;
  align-items: center;
  text-align: left;
  color: var(--muted);
  position: relative;
}
.nav-btn.active, .nav-btn:hover { color: white; background: rgba(150, 55, 255, 0.24); }
.nav-btn.slim { padding: 10px 14px; font-size: 14px; }
.badge { margin-left: auto; min-width: 22px; height: 22px; display: grid; place-items: center; border-radius: 999px; background: var(--brand3); color: white; font-size: 12px; }
.premium-card { margin-top: auto; padding: 16px; border-radius: 18px; background: linear-gradient(135deg, rgba(42, 124, 255, 0.18), rgba(255, 61, 154, 0.22)); border: 1px solid rgba(150, 55, 255, 0.35); }
.premium-card p { color: var(--muted); font-size: 13px; }
.danger-lite { padding: 12px 14px; border-radius: 14px; background: rgba(255, 85, 112, 0.12); color: #ff9aaa; }
.content-area {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 22px 20px 96px;
}
.screen { display: none; animation: fadeIn 0.2s ease; }
.active-screen { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.notice { padding: 12px 14px; border: 1px solid rgba(255, 200, 87, 0.4); border-radius: 14px; background: rgba(255, 200, 87, 0.1); margin-bottom: 14px; color: #ffe1a0; }
.notice button { margin-left: 8px; border: 0; background: rgba(255, 255, 255, 0.1); color: white; padding: 7px 10px; border-radius: 10px; }
.search-row { padding: 10px; margin-bottom: 12px; }
.stories-row { display: flex; gap: 16px; overflow-x: auto; padding: 14px; margin-bottom: 12px; scrollbar-width: none; }
.story-bubble { min-width: 74px; text-align: center; color: var(--muted); font-size: 12px; }
.story-avatar, .avatar-md, .avatar-sm, .avatar-xl {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #1e2d63, #7b2cff, #ff3d9a);
  color: white;
  font-weight: 900;
  overflow: hidden;
}
.story-avatar { width: 64px; height: 64px; border-radius: 999px; padding: 3px; margin: 0 auto 6px; border: 2px solid #ff3d9a; }
.avatar-md { width: 46px; height: 46px; border-radius: 999px; flex: 0 0 auto; }
.avatar-sm { width: 36px; height: 36px; border-radius: 999px; border: 0; }
.avatar-xl { width: 110px; height: 110px; border-radius: 32px; font-size: 36px; flex: 0 0 auto; }
.avatar-img { width: 100%; height: 100%; object-fit: cover; }
.quick-create { display: flex; gap: 10px; align-items: center; padding: 14px; margin-bottom: 12px; }
.create-placeholder { flex: 1; text-align: left; border: 1px solid var(--border); color: var(--muted); border-radius: 999px; padding: 12px 15px; background: rgba(255,255,255,0.05); }
.mini-create { width: 42px; height: 42px; border-radius: 14px; background: rgba(255,255,255,0.07); border: 1px solid var(--border); }
.home-tabs, .profile-tabs, .create-options, .chat-tabs { display: flex; gap: 8px; overflow-x: auto; margin: 14px 0; }
.feed-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.post-card { overflow: hidden; }
.post-head { display: flex; gap: 12px; align-items: center; padding: 14px; }
.post-head strong { display: block; }
.post-head small { color: var(--muted); }
.more-btn { margin-left: auto; color: var(--muted); }
.post-text { padding: 0 14px 12px; white-space: pre-wrap; }
.post-media { width: 100%; max-height: 560px; object-fit: cover; display: block; background: rgba(255,255,255,0.06); }
.post-actions { display: flex; align-items: center; gap: 12px; padding: 12px 14px; color: var(--muted); }
.post-actions button { border: 0; background: transparent; color: var(--text); }
.post-actions .save { margin-left: auto; }
.comments-box { padding: 0 14px 14px; color: var(--muted); font-size: 14px; }
.comment-form { display: flex; gap: 8px; margin-top: 10px; }
.comment-form input { padding: 10px 12px; }
.comment-form button { padding: 10px 12px; border-radius: 12px; border: 0; background: rgba(150, 55, 255, 0.4); color: white; }
.section-title { margin: 2px 0 16px; }
.section-title h2 { margin: 0; font-size: 30px; letter-spacing: -0.03em; }
.section-title p { margin: 6px 0 0; color: var(--muted); }
.discover-grid, .settings-grid, .creator-grid, .visitor-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.discover-grid .wide { grid-column: span 3; }
.search-panel { padding: 12px; margin-bottom: 14px; }
.tag-list, .user-list, .notification-list, .visitor-list { display: grid; gap: 10px; }
.tag-pill { display: flex; justify-content: space-between; gap: 14px; padding: 12px; border-radius: 14px; background: rgba(255,255,255,0.06); color: #8ab8ff; }
.user-row { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 14px; background: rgba(255,255,255,0.05); }
.user-row .user-meta { flex: 1; min-width: 0; }
.user-row strong, .user-row small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-row small { color: var(--muted); }
.follow-btn { border: 0; border-radius: 12px; padding: 9px 11px; color: white; background: rgba(42,124,255,0.58); }
.mini-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.mini-card { border-radius: 18px; overflow: hidden; background: rgba(255,255,255,0.05); border: 1px solid var(--border); }
.mini-card img { width: 100%; height: 160px; object-fit: cover; display: block; }
.mini-card div { padding: 10px; }
.create-form { padding: 18px; display: grid; gap: 12px; }
.tool-section { border: 1px solid var(--border); border-radius: 16px; padding: 12px; background: rgba(255,255,255,0.04); }
.tool-section h3 { margin: 0 0 10px; }
.tool-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.tool-chips span { padding: 8px 10px; border-radius: 999px; background: rgba(255,255,255,0.08); color: var(--muted); font-size: 13px; }
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.toggle-line { display: flex; gap: 8px; align-items: center; padding: 10px; border: 1px solid var(--border); border-radius: 14px; background: rgba(255,255,255,0.04); }
.toggle-line input { width: auto; }
.chat-layout { display: grid; grid-template-columns: 320px 1fr; gap: 14px; min-height: 620px; }
.chat-list-panel { padding: 12px; }
.chat-window { padding: 0; display: grid; grid-template-rows: auto 1fr auto auto; overflow: hidden; }
.chat-header { padding: 14px; border-bottom: 1px solid var(--border); font-weight: 800; }
.messages-box { padding: 14px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.message { max-width: 74%; padding: 10px 12px; border-radius: 16px; background: rgba(255,255,255,0.08); align-self: flex-start; }
.message.mine { align-self: flex-end; background: linear-gradient(135deg, rgba(42,124,255,0.75), rgba(150,55,255,0.75)); }
.message small { display: block; opacity: 0.75; font-size: 11px; margin-top: 4px; }
.message-form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.message-form .primary-btn { padding: 0 16px; }
.chat-fun-row { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--border); overflow-x: auto; }
.chat-fun-row button { border: 1px solid var(--border); color: var(--text); background: rgba(255,255,255,0.06); border-radius: 12px; padding: 8px 11px; }
.profile-card { padding: 18px; display: flex; gap: 18px; align-items: center; }
.profile-main { flex: 1; }
.profile-main h2 { margin: 0; font-size: 30px; }
.profile-main p { color: var(--muted); margin: 6px 0; }
.stats-row { display: flex; gap: 18px; flex-wrap: wrap; margin: 12px 0; color: var(--muted); }
.stats-row strong { color: var(--text); }
.profile-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.setting-card { padding: 16px; min-height: 136px; display: flex; flex-direction: column; gap: 10px; }
.setting-card h3 { margin: 0; }
.setting-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.45; }
.setting-card button { margin-top: auto; }
.insight-card { padding: 18px; display: grid; gap: 8px; }
.insight-card strong { font-size: 34px; }
.insight-card span, .insight-card small { color: var(--muted); }
.insight-card.locked { border-color: rgba(255, 61, 154, 0.35); }
.switch { display: inline-flex; align-items: center; }
.switch input { display: none; }
.switch b { width: 54px; height: 30px; border-radius: 999px; background: rgba(255,255,255,0.12); position: relative; transition: 0.2s; }
.switch b::after { content: ""; position: absolute; width: 24px; height: 24px; top: 3px; left: 3px; border-radius: 50%; background: white; transition: 0.2s; }
.switch input:checked + b { background: linear-gradient(135deg, var(--brand1), var(--brand3)); }
.switch input:checked + b::after { left: 27px; }
.empty-state { padding: 28px; color: var(--muted); text-align: center; }
.feature-dialog { width: min(94vw, 520px); border: 1px solid var(--border); border-radius: 22px; background: var(--panel-strong); color: var(--text); box-shadow: var(--shadow); }
.feature-dialog::backdrop { background: rgba(0,0,0,0.65); }
.dialog-close { float: right; border: 0; background: rgba(255,255,255,0.08); color: white; border-radius: 999px; width: 34px; height: 34px; }
.bottom-nav { display: none; }
.icon-btn { border-radius: 12px; padding: 9px; background: rgba(255,255,255,0.06); border: 1px solid var(--border); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 79; }

@media (max-width: 940px) {
  .main-view { display: block; }
  .mobile-header {
    position: sticky;
    top: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: rgba(5, 8, 20, 0.82);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
  }
  .side-nav {
    position: fixed;
    z-index: 80;
    left: 0;
    top: 0;
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    width: min(84vw, 310px);
  }
  .side-nav.open { transform: translateX(0); }
  .content-area { padding: 14px 12px 92px; }
  .bottom-nav {
    display: grid;
    grid-template-columns: 1fr 1fr 70px 1fr 1fr;
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: 12px;
    z-index: 70;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: rgba(7, 10, 24, 0.9);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
  }
  .bottom-btn { color: var(--muted); display: grid; place-items: center; gap: 2px; padding: 6px; border-radius: 16px; }
  .bottom-btn span { font-size: 11px; }
  .bottom-btn.active { color: white; background: rgba(150,55,255,0.18); }
  .create-fab { width: 54px; height: 54px; margin: -22px auto 0; border-radius: 20px; background: linear-gradient(135deg, var(--brand1), var(--brand2), var(--brand3)); color: white; font-size: 30px; box-shadow: 0 12px 30px rgba(150,55,255,0.42); }
  .discover-grid, .settings-grid, .creator-grid, .visitor-grid { grid-template-columns: 1fr; }
  .discover-grid .wide { grid-column: auto; }
  .chat-layout { grid-template-columns: 1fr; min-height: unset; }
  .chat-list-panel { max-height: 260px; overflow-y: auto; }
  .chat-window { min-height: 520px; }
  .form-grid { grid-template-columns: 1fr; }
  .profile-card { align-items: flex-start; }
  .avatar-xl { width: 86px; height: 86px; border-radius: 24px; }
  .section-title h2 { font-size: 25px; }
}

@media (max-width: 520px) {
  .profile-card { flex-direction: column; }
  .quick-create { flex-wrap: wrap; }
  .create-placeholder { order: 4; flex-basis: 100%; }
  .post-media { max-height: 420px; }
  .message { max-width: 86%; }
  .auth-card, .interest-card { padding: 18px; }
}