/* ============================================================================
 * RAYHAN AI — DESIGN SYSTEM STYLESHEET
 * Palette:
 *   Background: #070711
 *   Secondary Background: #0D1020
 *   Card Background: #111426
 *   Primary Purple: #8B35FF
 *   Neon Purple: #B45CFF
 *   Accent Blue: #4A9EFF
 *   Main Text: #F7F5FF
 *   Secondary Text: #A8A6C7
 *   Border: rgba(145, 91, 255, 0.22)
 * ============================================================================ */

:root {
  --bg-main: #070711;
  --bg-secondary: #0D1020;
  --bg-card: #111426;
  --bg-card-hover: #171B34;
  --primary-purple: #8B35FF;
  --neon-purple: #B45CFF;
  --accent-blue: #4A9EFF;
  --text-main: #F7F5FF;
  --text-secondary: #A8A6C7;
  --border-color: rgba(145, 91, 255, 0.22);
  --border-glow: rgba(180, 92, 255, 0.45);
  --shadow-neon: 0 0 28px rgba(139, 53, 255, 0.32);
  --glass-bg: rgba(17, 20, 38, 0.78);
}

body.theme-light {
  --bg-main: #F4F5FB;
  --bg-secondary: #FFFFFF;
  --bg-card: #EEF0FA;
  --bg-card-hover: #E3E7F7;
  --text-main: #121324;
  --text-secondary: #4E5174;
  --border-color: rgba(139, 53, 255, 0.25);
  --glass-bg: rgba(255, 255, 255, 0.88);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Subtle Futuristic Glow */
.ambient-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(139, 53, 255, 0.14), transparent 36%),
    radial-gradient(circle at 82% 18%, rgba(74, 158, 255, 0.10), transparent 34%),
    radial-gradient(circle at 50% 88%, rgba(180, 92, 255, 0.09), transparent 40%);
}

/* Main App Grid */
.app-shell {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Left Sidebar */
.sidebar-left {
  width: 292px;
  min-width: 292px;
  height: 100%;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), width 0.25s ease;
  z-index: 40;
}

.sidebar-left.closed {
  width: 0;
  min-width: 0;
  overflow: hidden;
  border-right: none;
}

.brand-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.crown-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-purple), var(--neon-purple), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-neon);
  color: #ffffff;
  font-size: 20px;
  flex-shrink: 0;
}

.brand-title {
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.6px;
  background: linear-gradient(90deg, #FFFFFF, var(--neon-purple), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.sidebar-actions {
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-new-chat {
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(180, 92, 255, 0.45);
  background: linear-gradient(135deg, var(--primary-purple), var(--neon-purple));
  color: #fff;
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--shadow-neon);
  transition: all 0.2s ease;
}

.btn-new-chat:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 34px rgba(180, 92, 255, 0.52);
}

.search-box {
  position: relative;
  width: 100%;
}

.search-box input {
  width: 100%;
  padding: 9px 12px 9px 32px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 12.5px;
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus {
  border-color: var(--neon-purple);
}

.search-box .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 12px;
}

.history-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 12px;
}

.history-category {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  padding: 10px 8px 6px;
}

.history-item {
  padding: 10px 11px;
  border-radius: 11px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  margin-bottom: 5px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  transition: all 0.18s ease;
}

.history-item:hover {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.history-item.active {
  background: rgba(139, 53, 255, 0.16);
  border-color: var(--neon-purple);
}

.history-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item-preview {
  font-size: 11.5px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.history-item-meta {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.history-item-actions {
  display: flex;
  gap: 4px;
  opacity: 0.25;
  transition: opacity 0.15s;
}

.history-item:hover .history-item-actions {
  opacity: 1;
}

.icon-btn-sm {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 3px 5px;
  border-radius: 6px;
  font-size: 12px;
}

.icon-btn-sm:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.sidebar-footer {
  padding: 13px 15px;
  border-top: 1px solid var(--border-color);
  background: rgba(17, 20, 38, 0.65);
}

.quota-mini-row {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  margin-bottom: 5px;
}

.progress-track {
  width: 100%;
  height: 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.09);
  overflow: hidden;
  margin-bottom: 9px;
}

.progress-fill-public {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--primary-purple));
  border-radius: 99px;
  transition: width 0.3s ease;
}

.progress-fill-premium {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-purple), var(--neon-purple));
  border-radius: 99px;
  transition: width 0.3s ease;
}

/* Center Workspace (Header + Main Area + Chat Input) */
.workspace-center {
  flex: 1;
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: transparent;
}

/* Top Navigation Header */
.top-navbar {
  height: 62px;
  min-height: 62px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 30;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-tab {
  padding: 7px 13px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s;
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(139, 53, 255, 0.1);
}

.nav-tab.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(139, 53, 255, 0.28), rgba(180, 92, 255, 0.18));
  border-color: var(--border-glow);
}

.user-pill {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 11px 5px 6px;
  border-radius: 99px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  position: relative;
}

.avatar-circle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-purple), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}

.badge-role {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 99px;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-public {
  background: rgba(74, 158, 255, 0.18);
  color: var(--accent-blue);
  border: 1px solid rgba(74, 158, 255, 0.35);
}

.badge-premium {
  background: rgba(180, 92, 255, 0.22);
  color: var(--neon-purple);
  border: 1px solid rgba(180, 92, 255, 0.45);
}

/* Main Scrollable Content Area */
.main-scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px 18px;
  display: flex;
  flex-direction: column;
}

/* Hero Banner */
.hero-banner {
  max-width: 960px;
  margin: 0 auto 24px;
  width: 100%;
  padding: 28px 30px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 90% 20%, rgba(180, 92, 255, 0.24), transparent 45%),
    linear-gradient(135deg, rgba(17, 20, 38, 0.96), rgba(13, 16, 32, 0.96));
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 99px;
  background: rgba(139, 53, 255, 0.22);
  border: 1px solid rgba(180, 92, 255, 0.4);
  color: var(--neon-purple);
  font-size: 11.5px;
  font-weight: 600;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 8px;
}

.hero-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 760px;
}

/* Feature Cards Grid */
.feature-cards-grid {
  max-width: 960px;
  width: 100%;
  margin: 0 auto 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.feature-card {
  padding: 16px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
  border-color: var(--neon-purple);
  box-shadow: 0 8px 24px rgba(139, 53, 255, 0.18);
}

.feature-card.selected {
  border-color: var(--neon-purple);
  background: rgba(139, 53, 255, 0.15);
}

.feature-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(139, 53, 255, 0.18);
  border: 1px solid rgba(180, 92, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.feature-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.feature-card-sub {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* Conversation Messages Stream */
.chat-messages-container {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 18px;
}

.msg-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.msg-row.user {
  flex-direction: row-reverse;
}

.msg-bubble {
  max-width: 82%;
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.65;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  overflow-wrap: break-word;
}

.msg-row.user .msg-bubble {
  background: linear-gradient(135deg, rgba(139, 53, 255, 0.32), rgba(74, 158, 255, 0.22));
  border-color: rgba(180, 92, 255, 0.45);
}

.msg-header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.msg-footer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(145, 91, 255, 0.14);
}

/* Code Block Styling */
.code-block-wrapper {
  margin: 12px 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(145, 91, 255, 0.32);
  background: #05060E;
}

.code-block-bar {
  padding: 7px 13px;
  background: rgba(139, 53, 255, 0.16);
  border-bottom: 1px solid rgba(145, 91, 255, 0.24);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--text-secondary);
  font-family: monospace;
}

.code-copy-btn {
  padding: 3px 9px;
  border-radius: 6px;
  background: rgba(180, 92, 255, 0.22);
  border: 1px solid rgba(180, 92, 255, 0.4);
  color: #fff;
  font-size: 11px;
  cursor: pointer;
}

.code-block-pre {
  padding: 13px 15px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 12.5px;
  line-height: 1.55;
  color: #E5E9F0;
}

/* Chat Input Dock */
.chat-input-dock {
  padding: 12px 24px 18px;
  background: linear-gradient(180deg, transparent, var(--bg-main) 25%);
  z-index: 25;
}

.chat-input-box {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 14px;
  border-radius: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-textarea {
  width: 100%;
  min-height: 44px;
  max-height: 160px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  font-family: inherit;
}

.chat-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.toolbar-toggles {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.chip-toggle {
  padding: 5px 10px;
  border-radius: 9px;
  font-size: 11.5px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s;
}

.chip-toggle.active {
  background: rgba(139, 53, 255, 0.25);
  border-color: var(--neon-purple);
  color: #fff;
}

.btn-send {
  padding: 8px 18px;
  border-radius: 11px;
  border: none;
  background: linear-gradient(135deg, var(--primary-purple), var(--neon-purple));
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-neon);
}

.btn-stop {
  padding: 8px 14px;
  border-radius: 11px;
  border: 1px solid #f43f5e;
  background: rgba(244, 63, 94, 0.2);
  color: #fda4af;
  font-weight: 600;
  font-size: 12.5px;
  cursor: pointer;
}

/* Right Model & Provider Panel */
.panel-right {
  width: 320px;
  min-width: 320px;
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 18px 16px;
  gap: 16px;
  transition: transform 0.25s ease, width 0.25s ease;
  z-index: 35;
}

.panel-right.closed {
  width: 0;
  min-width: 0;
  padding: 0;
  overflow: hidden;
  border-left: none;
}

.provider-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--bg-card);
  padding: 5px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.provider-tab-btn {
  padding: 8px 10px;
  border-radius: 9px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.provider-tab-btn.active-public {
  background: linear-gradient(135deg, #2563eb, var(--accent-blue));
  color: #fff;
}

.provider-tab-btn.active-premium {
  background: linear-gradient(135deg, var(--primary-purple), var(--neon-purple));
  color: #fff;
}

.model-card {
  padding: 12px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  margin-bottom: 8px;
  transition: all 0.18s;
}

.model-card:hover {
  border-color: var(--neon-purple);
}

.model-card.selected {
  border-color: var(--neon-purple);
  background: rgba(139, 53, 255, 0.18);
  box-shadow: 0 0 18px rgba(139, 53, 255, 0.24);
}

/* Admin & Feature Tables / Panels */
.glass-panel {
  padding: 20px;
  border-radius: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  margin-bottom: 18px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  padding: 16px;
  border-radius: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.stat-val {
  font-size: 24px;
  font-weight: 800;
  color: var(--neon-purple);
  margin-top: 4px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th, .data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.data-table th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 11.5px;
  text-transform: uppercase;
}

/* Modals & Toast */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 5, 12, 0.78);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-card {
  width: 100%;
  max-width: 440px;
  padding: 26px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
}

.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 5px;
  font-weight: 600;
}

.form-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 13.5px;
  outline: none;
}

.form-input:focus {
  border-color: var(--neon-purple);
}

.toast-container {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast-item {
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--neon-purple);
  color: var(--text-main);
  font-size: 13px;
  box-shadow: var(--shadow-neon);
}

/* Responsive Breakpoints (Tablet & Smartphone) */
@media (max-width: 1024px) {
  .panel-right {
    position: fixed;
    right: 0;
    top: 62px;
    bottom: 0;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.6);
  }
}

@media (max-width: 768px) {
  .sidebar-left {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.7);
  }
  .nav-links {
    overflow-x: auto;
    max-width: 55vw;
  }
  .main-scroll-area {
    padding: 16px 14px;
  }
  .chat-input-dock {
    padding: 8px 10px 12px;
  }
  .msg-bubble {
    max-width: 92%;
  }
}