/* ==========================================================================
   ExamSetu Nepal - AI Exam Guru & Leaderboard Personalization Styles
   ========================================================================== */

:root {
  --guru-primary: #6366f1;
  --guru-primary-glow: rgba(99, 102, 241, 0.35);
  --guru-accent: #a855f7;
  --guru-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --guru-surface: #0f172a;
  --guru-card-bg: rgba(30, 41, 59, 0.7);
  --guru-border: rgba(148, 163, 184, 0.15);
}

/* Web Navigation Guru Link Highlight */
.nav-link-guru {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #6366f1 !important;
  font-weight: 700;
}
.nav-link-guru:hover {
  color: #4f46e5 !important;
}

/* Guru Layout Grid */
.guru-layout-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
  margin-bottom: 40px;
}

@media (max-width: 900px) {
  .guru-layout-grid {
    grid-template-columns: 1fr;
  }
}

/* Leaderboard Diagnostics Sidebar */
.guru-leaderboard-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.guru-rank-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(165, 180, 252, 0.2);
}

.guru-rank-banner::after {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.4) 0%, transparent 70%);
  pointer-events: none;
}

.guru-rank-number {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.competitor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 0.88rem;
  transition: background 0.15s ease;
}

.competitor-row.current-user-row {
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.4);
  font-weight: 700;
}

.competitor-row .rank-circle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
}

.competitor-row:nth-child(1) .rank-circle {
  background: #fbbf24;
  color: #78350f;
  border-color: #f59e0b;
}

.competitor-row:nth-child(2) .rank-circle {
  background: #cbd5e1;
  color: #1e293b;
  border-color: #94a3b8;
}

.competitor-row:nth-child(3) .rank-circle {
  background: #fdba74;
  color: #7c2d12;
  border-color: #fb923c;
}

/* Chat Container */
.guru-chat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  height: 640px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.guru-chat-header {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  flex-wrap: wrap;
  gap: 12px;
}

.guru-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--surface-alt);
  scroll-behavior: smooth;
}

/* Chat Bubbles */
.chat-msg {
  display: flex;
  gap: 12px;
  max-width: 88%;
  animation: fadeInMsg 0.25s ease-out;
}

@keyframes fadeInMsg {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-msg.msg-ai {
  align-self: flex-start;
}

.chat-msg.msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.msg-ai .chat-avatar {
  background: var(--guru-gradient);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--guru-primary-glow);
}

.msg-user .chat-avatar {
  background: var(--primary);
  color: #ffffff;
}

.chat-bubble {
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 0.94rem;
  line-height: 1.55;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.msg-ai .chat-bubble {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-top-left-radius: 4px;
}

.msg-user .chat-bubble {
  background: var(--primary);
  color: #ffffff;
  border-top-right-radius: 4px;
}

.chat-bubble p {
  margin: 0 0 8px 0;
}
.chat-bubble p:last-child {
  margin-bottom: 0;
}

.chat-bubble pre, .chat-bubble code {
  font-family: 'JetBrains Mono', monospace, Consolas;
  background: rgba(0, 0, 0, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

/* Suggestion Chips */
.guru-chips-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 18px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  scrollbar-width: none;
}
.guru-chips-scroll::-webkit-scrollbar {
  display: none;
}

.guru-chip {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.guru-chip:hover {
  background: var(--guru-primary);
  color: #ffffff;
  border-color: var(--guru-primary);
  transform: translateY(-1px);
}

/* Input Area */
.guru-chat-input-area {
  padding: 14px 18px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  align-items: center;
}

.guru-input {
  flex: 1;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.guru-input:focus {
  border-color: var(--guru-primary);
  box-shadow: 0 0 0 3px var(--guru-primary-glow);
}

.guru-send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--guru-gradient);
  color: #ffffff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 4px 12px var(--guru-primary-glow);
  transition: transform 0.15s ease;
}

.guru-send-btn:hover {
  transform: scale(1.06);
}
.guru-send-btn:active {
  transform: scale(0.94);
}

/* Voice TTS Button */
.tts-btn {
  background: transparent;
  border: none;
  color: var(--muted-text);
  cursor: pointer;
  font-size: 1rem;
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.15s ease;
}
.tts-btn:hover {
  color: var(--guru-primary);
}