/* style.css — Meenakshi French Tuition Chatbot Premium stylesheet */

:root {
  /* Common tokens */
  --font-primary: 'Outfit', sans-serif;
  --font-serif: 'Playfair Display', serif;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --border-radius-lg: 24px;
  --border-radius-md: 16px;
  --border-radius-sm: 12px;

  /* Dark Theme Variables */
  --bg-app: radial-gradient(circle at top left, #121224, #080811);
  --bg-container: rgba(22, 22, 40, 0.65);
  --border-glass: rgba(255, 255, 255, 0.08);
  --bg-header: rgba(26, 26, 46, 0.85);
  --border-header: rgba(255, 255, 255, 0.1);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --accent-color: #FF5D8F;
  --accent-hover: #ff3c76;
  --bg-bubble-bot: rgba(30, 30, 54, 0.9);
  --bg-bubble-user: linear-gradient(135deg, #FF5D8F, #FF758F);
  --text-bubble-user: #ffffff;
  --shadow-main: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-input: inset 0 2px 4px rgba(0, 0, 0, 0.5);
  --bg-input: rgba(10, 10, 20, 0.8);
  --border-input: rgba(255, 255, 255, 0.08);
  --bg-chip: rgba(255, 255, 255, 0.04);
  --border-chip: rgba(255, 255, 255, 0.08);
  --text-chip: #e5e7eb;
}

body.light-theme {
  /* Light Theme Variables */
  --bg-app: radial-gradient(circle at top left, #f5f7fb, #e4ebf5);
  --bg-container: rgba(255, 255, 255, 0.85);
  --border-glass: rgba(0, 0, 0, 0.05);
  --bg-header: rgba(255, 255, 255, 0.95);
  --border-header: rgba(0, 0, 0, 0.06);
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --accent-color: #E03B70;
  --accent-hover: #c92f5e;
  --bg-bubble-bot: #ffffff;
  --bg-bubble-user: linear-gradient(135deg, #E03B70, #FF5D8F);
  --text-bubble-user: #ffffff;
  --shadow-main: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-input: inset 0 1px 3px rgba(0, 0, 0, 0.05);
  --bg-input: #f3f4f6;
  --border-input: rgba(0, 0, 0, 0.08);
  --bg-chip: rgba(255, 255, 255, 0.9);
  --border-chip: rgba(0, 0, 0, 0.08);
  --text-chip: #4b5563;
}

/* Reset and Layout */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-primary);
}

body {
  background: var(--bg-app);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.chat-container {
  width: 100%;
  max-width: 580px;
  height: 100vh;
  background: var(--bg-container);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-main);
  position: relative;
  transition: var(--transition-smooth);
}

/* Desktop styling - nice frame */
@media (min-width: 600px) {
  .chat-container {
    height: 90vh;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
  }
}

/* Header */
.chat-header {
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-header);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
  transition: var(--transition-smooth);
}

.profile-section {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar-container {
  position: relative;
  width: 46px;
  height: 46px;
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.status-indicator {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--bg-header);
}

.status-indicator.online {
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.profile-info {
  display: flex;
  flex-direction: column;
}

.tutor-name {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: var(--text-main);
}

.tutor-role {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Controls */
.header-controls {
  display: flex;
  gap: 8px;
}

.control-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  color: var(--text-muted);
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent-color);
}

body.light-theme .control-btn:hover {
  background: rgba(0, 0, 0, 0.04);
}

.sun-icon {
  display: none;
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.moon-icon {
  display: block;
  width: 20px;
  height: 20px;
  fill: currentColor;
}

body.light-theme .sun-icon {
  display: block;
}

body.light-theme .moon-icon {
  display: none;
}

/* Chat Area */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}

/* Custom Scrollbar */
.chat-area::-webkit-scrollbar {
  width: 6px;
}
.chat-area::-webkit-scrollbar-track {
  background: transparent;
}
.chat-area::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}
body.light-theme .chat-area::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.08);
}

/* Welcome Box */
.welcome-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-md);
  padding: 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

body.light-theme .welcome-box {
  background: #ffffff;
}

.welcome-badge {
  background: rgba(255, 93, 143, 0.15);
  color: var(--accent-color);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.welcome-box h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text-main);
  margin-top: 4px;
}

.welcome-box p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 90%;
}

/* Messages List */
.messages-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Chat Bubbles */
.message-bubble {
  max-width: 82%;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  font-size: 0.93rem;
  line-height: 1.45;
  position: relative;
  animation: slideIn 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  word-wrap: break-word;
}

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

.message-bubble.bot {
  background: var(--bg-bubble-bot);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.message-bubble.user {
  background: var(--bg-bubble-user);
  color: var(--text-bubble-user);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 12px rgba(255, 93, 143, 0.2);
}

.message-time {
  display: block;
  font-size: 0.65rem;
  margin-top: 6px;
  text-align: right;
  opacity: 0.6;
}

.message-bubble.user .message-time {
  color: rgba(255, 255, 255, 0.8);
}

.message-bubble.bot .message-time {
  color: var(--text-muted);
}

/* Typing Indicator */
.typing-bubble {
  align-self: flex-start;
  background: var(--bg-bubble-bot);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-md);
  border-bottom-left-radius: 4px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 5px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.typing-dot {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  opacity: 0.4;
  animation: typingBlink 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: 200ms; }
.typing-dot:nth-child(2) { animation-delay: 400ms; }
.typing-dot:nth-child(3) { animation-delay: 600ms; }

@keyframes typingBlink {
  0%, 100% { opacity: 0.4; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-4px); }
}

/* Chips Container */
.chips-container {
  padding: 8px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.chips-container::-webkit-scrollbar {
  display: none; /* Hide scrollbar for chips */
}

.chip {
  background: var(--bg-chip);
  border: 1px solid var(--border-chip);
  color: var(--text-chip);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.chip:hover {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(255, 93, 143, 0.2);
}

/* Input Footer */
.chat-footer {
  padding: 16px 20px;
  background: var(--bg-header);
  border-top: 1px solid var(--border-header);
  transition: var(--transition-smooth);
}

.input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: 30px;
  padding: 6px 6px 6px 18px;
  box-shadow: var(--shadow-input);
  transition: var(--transition-smooth);
}

.input-wrapper:focus-within {
  border-color: var(--accent-color);
  box-shadow: 0 0 10px rgba(255, 93, 143, 0.15);
}

.input-wrapper input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.93rem;
  outline: none;
  padding: 8px 0;
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.send-btn {
  background: var(--accent-color);
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  color: #fff;
  flex-shrink: 0;
}

.send-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.send-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transform: translate(1px, 0);
}

/* ── Modal & Header Controls ────────────────────────────────────────────────── */
.control-btn svg {
  display: block;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-container);
  border: 1px solid var(--border-header);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  width: 90%;
  max-width: 420px;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  position: relative;
  transform: translateY(30px);
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  z-index: 10;
}

body.light-theme .modal-close-btn {
  background: rgba(0, 0, 0, 0.05);
}

.modal-close-btn:hover {
  color: var(--accent-color);
  background: rgba(255, 93, 143, 0.15);
}

.modal-header {
  text-align: center;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.modal-avatar {
  font-size: 32px;
  margin-bottom: 8px;
}

.modal-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-main);
}

.modal-header p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.4;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 4px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
}

.input-group input {
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--border-radius-sm);
  padding: 10px 14px;
  color: var(--text-main);
  outline: none;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.input-group input:focus {
  border-color: var(--accent-color);
}

.role-selector {
  display: flex;
  gap: 10px;
}

.role-btn {
  flex: 1;
  background: var(--bg-chip);
  border: 1px solid var(--border-chip);
  color: var(--text-chip);
  padding: 10px;
  border-radius: var(--border-radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.role-btn.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(255, 93, 143, 0.25);
}

.role-btn:hover:not(.active) {
  background: rgba(255, 255, 255, 0.05);
}

body.light-theme .role-btn:hover:not(.active) {
  background: rgba(0, 0, 0, 0.02);
}

.modal-footer {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.modal-btn {
  flex: 1;
  padding: 12px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.modal-btn.skip {
  background: var(--bg-chip);
  border: 1px solid var(--border-chip);
  color: var(--text-chip);
}

.modal-btn.skip:hover {
  background: rgba(255, 255, 255, 0.08);
}

body.light-theme .modal-btn.skip:hover {
  background: rgba(0, 0, 0, 0.04);
}

.modal-btn.submit {
  background: var(--accent-color);
  color: #fff;
  box-shadow: 0 4px 15px rgba(255, 93, 143, 0.3);
}

.modal-btn.submit:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Admin Styling */
.control-btn.admin-btn {
  opacity: 0.35;
  transition: var(--transition-smooth);
}
.control-btn.admin-btn:hover {
  opacity: 1 !important;
  color: var(--accent-color);
}
.admin-section {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-sm);
  padding: 12px;
}
body.light-theme .admin-section {
  background: rgba(0, 0, 0, 0.02);
}
.admin-session-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-sm);
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  color: var(--text-main);
}
.admin-session-item:hover {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}
body.light-theme .admin-session-item {
  background: rgba(0, 0, 0, 0.03);
}
body.light-theme .admin-session-item:hover {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

/* Chat Action Button */
.chat-action-btn {
  display: inline-block;
  margin-top: 10px;
  background: var(--accent-color);
  color: #fff !important;
  border: none;
  border-radius: var(--border-radius-sm);
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 10px rgba(255, 93, 143, 0.2);
  text-align: center;
}
.chat-action-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 15px rgba(255, 93, 143, 0.3);
}

/* Close/Exit Chat Button in Header */
.close-chat-btn {
  background: none;
  border: none;
  color: var(--text-header);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  margin-right: 8px;
  opacity: 0.8;
  outline: none;
}
.close-chat-btn:hover {
  opacity: 1;
  color: var(--accent-color);
  transform: translateX(-2px);
}
body.light-theme .close-chat-btn {
  color: var(--text-main);
}
body.light-theme .close-chat-btn:hover {
  color: var(--accent-color);
}