/* ============================================
   Perplexity AI Clone — Warm Light Theme
   Matching latest Perplexity design (March 2026)
   ============================================ */

/* --- Perplexity Custom Fonts --- */
@font-face {
  font-family: pplxSans;
  src: url('https://r2cdn.perplexity.ai/fonts/PPLX-Sans-Beta-v1-VF.woff2') format('woff2');
  font-display: swap;
}

@font-face {
  font-family: fkGroteskNeue;
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
  font-display: swap;
  font-weight: 100 900;
}

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

/* --- Design Tokens — Warm Light Mode --- */
:root {
  /* Warm palette (from Perplexity's warm-astra scale) */
  --bg-base:        #F8F7F2;   /* warm-astra-200 ~ cream */
  --bg-raised:      #FDFCF9;   /* warm-astra-100 ~ off-white card */
  --bg-quiet:       rgba(44, 40, 28, 0.06);   /* subtle warm tint */
  --bg-subtle:      rgba(44, 40, 28, 0.035);

  /* Text */
  --text-primary:   #26231B;   /* warm-astra-1000 */
  --text-quiet:     rgba(38, 35, 27, 0.62);
  --text-quieter:   rgba(38, 35, 27, 0.40);
  --text-muted:     rgba(38, 35, 27, 0.38);

  /* Borders */
  --border-subtle:  rgba(38, 35, 27, 0.10);
  --border-focus:   rgba(38, 35, 27, 0.20);

  /* Sidebar */
  --sidebar-width:  200px;
  --sidebar-bg:     #F8F7F2;
  --sidebar-text:   #26231B;
  --sidebar-hover:  rgba(38, 35, 27, 0.06);
  --sidebar-active: rgba(38, 35, 27, 0.09);

  /* Search box */
  --searchbox-bg:   #FDFCF9;

  /* Accent */
  --accent-teal:    #20b8cd;
  --accent-teal-bg: rgba(32, 184, 205, 0.12);

  /* Announcement banners */
  --banner-bg:      #FEF3E0;
  --banner-border:  #FDE9C8;
}

/* --- Base --- */
html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'pplxSans', 'fkGroteskNeue', ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 14px;
  letter-spacing: -0.015em;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   Announcements (fixed at top)
   ============================================ */
#announcements-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99;
}

.announcement-bar {
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
}

/* ============================================
   Top Banner (from API config)
   ============================================ */
.top-banner {
  background: var(--banner-bg);
  border-bottom: 1px solid var(--banner-border);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  position: relative;
  z-index: 50;
}

.banner-content {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.banner-icon { flex-shrink: 0; }

.banner-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.banner-arrow {
  flex-shrink: 0;
  opacity: 0.5;
}

/* ============================================
   Layout
   ============================================ */
.layout {
  display: flex;
  height: 100vh;
}

/* ============================================
   Sidebar — Light Warm
   ============================================ */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border-right: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

/* Sidebar Top Tabs (Search / Computer) — vertical stack */
.sidebar-tabs {
  display: flex;
  flex-direction: column;
  padding: 4px 8px 0;
  gap: 0;
}

.sidebar-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  cursor: pointer;
}

.sidebar-tab:hover { background: var(--sidebar-hover); }

.sidebar-tab.active {
  background: var(--sidebar-active);
  color: var(--text-primary);
}

/* Computer button disabled in toolbar */
.computer-btn-disabled {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.4;
  cursor: not-allowed;
  user-select: none;
}

/* Computer button ACTIVE in toolbar */
.computer-btn-active {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--accent-teal-bg);
  color: var(--accent-teal);
  border: 1px solid rgba(32, 184, 205, 0.22);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.computer-btn-active:hover {
  background: rgba(32, 184, 205, 0.18);
  border-color: rgba(32, 184, 205, 0.35);
}

/* Nav */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 8px 8px 4px;
  gap: 1px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.12s;
  letter-spacing: -0.01em;
}

.nav-item:hover {
  background: var(--sidebar-hover);
}

.nav-item.active {
  background: var(--sidebar-active);
}

.nav-item svg {
  flex-shrink: 0;
  color: var(--text-primary);
  opacity: 0.8;
}

.nav-item span {
  color: var(--text-primary);
}

/* Separator */
.sidebar-sep {
  height: 1px;
  background: var(--border-subtle);
  margin: 6px 12px;
}

/* History section */
.sidebar-history {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
  scrollbar-width: thin;
  scrollbar-color: rgba(38,35,27,0.12) transparent;
}

.sidebar-history::-webkit-scrollbar { width: 4px; }
.sidebar-history::-webkit-scrollbar-track { background: transparent; }
.sidebar-history::-webkit-scrollbar-thumb {
  background: rgba(38,35,27,0.12);
  border-radius: 4px;
}

.history-label {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 8px 10px 4px;
}

.history-list a {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text-quiet);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.12s, color 0.12s;
}

.history-list a:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 6px 8px 10px;
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.sidebar-footer-row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.12s;
  text-decoration: none;
}

.sidebar-footer-row:hover {
  background: var(--sidebar-hover);
}

.sidebar-footer-row svg {
  flex-shrink: 0;
  opacity: 0.75;
}

.footer-username {
  flex: 1;
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.01em;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-y: auto;
  background: var(--bg-base);
}

/* ============================================
   Center Content
   ============================================ */
.center-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 0;
  gap: 0;
}

/* ============================================
   Logo
   ============================================ */
.logo-text {
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 52px;
  font-weight: 550;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 28px;
  user-select: none;
  line-height: 1.0;
}

.logo-pro {
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.03em;
  opacity: 0.75;
}

/* ============================================
   Search Box
   ============================================ */
.search-box {
  width: 100%;
  background: var(--searchbox-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  overflow: visible;
  box-shadow:
    0 1px 2px rgba(38, 35, 27, 0.04),
    0 3px 10px rgba(38, 35, 27, 0.04);
  transition: border-color 0.18s, box-shadow 0.18s;
  position: relative;
}

.search-box:focus-within {
  border-color: var(--border-focus);
  box-shadow:
    0 1px 3px rgba(38, 35, 27, 0.06),
    0 5px 18px rgba(38, 35, 27, 0.07);
}

.search-input-area {
  padding: 16px 18px 8px;
}

.search-input {
  width: 100%;
  border: none;
  outline: none;
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 15px;
  color: var(--text-primary);
  background: transparent;
  resize: none;
  line-height: 1.55;
  min-height: 26px;
  letter-spacing: -0.015em;
}

.search-input::placeholder {
  color: var(--text-muted);
}

/* ============================================
   Search Toolbar
   ============================================ */
.search-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px 10px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 2px;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 3px;
}

.toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: none;
  background: none;
  color: var(--text-quiet);
  cursor: pointer;
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 7px;
  border-radius: 9px;
  transition: background 0.12s, color 0.12s;
  letter-spacing: -0.01em;
}

.toolbar-btn:hover {
  background: var(--bg-quiet);
  color: var(--text-primary);
}

/* Plus / attach button */
.plus-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  padding: 0;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-quiet);
}

.plus-btn:hover {
  background: var(--bg-quiet);
  border-color: var(--border-focus);
}

/* Model selector button */
.model-btn {
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 5px 11px;
  font-size: 13px;
  color: var(--text-quiet);
  gap: 4px;
}

.model-btn:hover {
  background: var(--bg-quiet);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

/* Mic button */
.mic-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  padding: 0;
  justify-content: center;
}

/* Submit button */
.submit-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text-primary);
  color: var(--bg-base);
  cursor: pointer;
  transition: opacity 0.2s, transform 0.12s;
  border: none;
}

.submit-btn:hover {
  opacity: 0.82;
}

.submit-btn:active {
  transform: scale(0.95);
}

/* ============================================
   "Try Computer" Section (optional chips)
   ============================================ */
.try-computer-section {
  width: 100%;
  margin-top: 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  background: var(--searchbox-bg);
  overflow: hidden;
}

.try-computer-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-quiet);
}

.try-chips {
  display: flex;
  gap: 8px;
  padding: 0 12px 12px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.try-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: transparent;
  color: var(--text-quiet);
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.try-chip:hover {
  background: var(--bg-quiet);
  border-color: var(--border-focus);
  color: var(--text-primary);
}

.try-prompts {
  border-top: 1px solid var(--border-subtle);
}

.try-prompt-item {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-quiet);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  border-bottom: 1px solid var(--border-subtle);
  letter-spacing: -0.01em;
}

.try-prompt-item:last-child {
  border-bottom: none;
}

.try-prompt-item:hover {
  background: var(--bg-quiet);
  color: var(--text-primary);
}

/* ============================================
   Connector Menu
   ============================================ */
.connector-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
}
.connector-overlay.open { display: block; }

.connector-menu {
  display: none;
  position: fixed;
  width: 260px;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.10), 0 1px 4px rgba(0,0,0,0.06);
  z-index: 200;
  max-height: 380px;
  overflow-y: auto;
  scrollbar-width: none;
}
.connector-menu::-webkit-scrollbar { display: none; }
.connector-menu.open { display: block; }

.connector-search {
  padding: 4px;
}
.connector-search-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-base);
  font-family: var(--font-primary);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
}
.connector-search-input::placeholder { color: var(--text-muted); }
.connector-search-input:focus { border-color: var(--text-secondary); }

.connector-list {
  padding: 4px 0;
}

.connector-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.12s;
  font-size: 14px;
  color: var(--text-primary);
}
.connector-item:hover { background: rgba(38,35,27,0.04); }
.connector-item.active { color: var(--text-primary); }

.connector-item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.connector-item.disabled:hover {
  background: transparent;
  opacity: 0.4;
}

.connector-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--text-secondary);
}

.connector-name {
  flex: 1;
  font-size: 14px;
  font-weight: 400;
}

.connector-check {
  flex-shrink: 0;
  width: 18px;
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

.connector-external {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

/* ============================================
   Model Dropdown Menu
   ============================================ */
.model-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
}

.model-overlay.open { display: block; }

.model-menu {
  display: none;
  position: fixed;
  width: 264px;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 4px;
  box-shadow:
    0 4px 6px rgba(38, 35, 27, 0.06),
    0 12px 32px rgba(38, 35, 27, 0.10);
  z-index: 200;
  max-height: 420px;
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.model-menu::-webkit-scrollbar { display: none; }
.model-menu.open { display: block; }

.model-item {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 8px 10px;
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.1s;
  font-size: 14px;
  color: var(--text-primary);
}

.model-item:hover { background: var(--bg-quiet); }
.model-item.selected { background: var(--sidebar-active); }
.model-item.locked { opacity: 0.45; cursor: default; }
.model-item.locked:hover { background: none; opacity: 0.55; }

.model-item-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding-top: 1px;
  color: var(--text-quiet);
}

.model-item-body { flex: 1; min-width: 0; }

.model-item-name {
  font-size: 13.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  letter-spacing: -0.01em;
}

.model-item-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.3;
  margin-top: 2px;
}

.model-item-check {
  flex-shrink: 0;
  width: 16px;
  display: flex;
  align-items: center;
  padding-top: 1px;
  color: var(--accent-teal);
}

.model-tag {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 500;
  background: var(--accent-teal-bg);
  color: var(--accent-teal);
}

.model-tag-new {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 500;
  background: var(--accent-teal-bg);
  color: var(--accent-teal);
}

.model-menu-sep {
  height: 1px;
  background: var(--border-subtle);
  margin: 3px 10px;
}

/* ============================================
   Bottom Footer (encryption badge)
   ============================================ */
.bottom-footer {
  padding: 14px 16px;
  display: flex;
  justify-content: center;
  flex-shrink: 0;
}

.encryption-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: var(--bg-quiet);
  color: var(--text-quiet);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
}

.encryption-badge svg { opacity: 0.65; }

/* ============================================
   Feature Chips Row (below search box)
   ============================================ */
.feature-chips {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

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

.feature-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 15px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: var(--searchbox-bg);
  color: var(--text-quiet);
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  white-space: nowrap;
  letter-spacing: -0.01em;
  box-shadow: 0 1px 2px rgba(38,35,27,0.04);
}

.feature-chip:hover {
  background: var(--bg-quiet);
  border-color: var(--border-focus);
  color: var(--text-primary);
}

/* ============================================
   Suggested Prompts (below feature chips)
   ============================================ */
.suggested-prompts {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-top: 14px;
}

.suggested-prompt {
  display: block;
  padding: 8px 4px;
  font-size: 13.5px;
  color: var(--text-quieter);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.12s;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--border-subtle);
}

.suggested-prompt:first-child {
  border-top: 1px solid var(--border-subtle);
}

.suggested-prompt:hover {
  color: var(--text-primary);
}

/* ============================================
   Footer Avatar, Bell & Pro Badge
   ============================================ */
.footer-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-teal);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
  letter-spacing: 0;
}

.footer-bell {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: none;
  background: none;
  color: var(--text-quiet);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.12s, color 0.12s;
  padding: 0;
}

.footer-bell:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
}

.footer-pro-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 600;
  background: var(--accent-teal-bg);
  color: var(--accent-teal);
  flex-shrink: 0;
  letter-spacing: 0.01em;
}

/* ============================================
   Suggestion Chips (legacy support)
   ============================================ */
.suggestion-chips {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-top: 16px;
  justify-content: center;
  overflow-x: auto;
  width: 100%;
  scrollbar-width: none;
}

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

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: var(--searchbox-bg);
  color: var(--text-primary);
  font-family: 'pplxSans', 'fkGroteskNeue', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.chip:hover {
  background: var(--bg-quiet);
  border-color: var(--border-focus);
}

.chip svg { opacity: 0.5; flex-shrink: 0; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .sidebar { display: none; }

  .logo-text { font-size: 38px; }

  .center-content { padding: 0 16px; }

  .suggestion-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 4px;
  }
}