/* Tatevatsi v2 Modern Responsive Styling */

:root {
  --bg-primary: #fbfbfa;
  --bg-surface: #ffffff;
  --bg-secondary: #f4f3f0;
  --text-primary: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #78716c;
  --border-color: #e7e5e4;
  --brand-amber: #92400e;
  --brand-amber-light: #fef3c7;
  --brand-amber-hover: #78350f;
  --quote-bg: #fffbeb;
  --quote-border: #fde68a;
  --user-bg: #fef3c7;
  --error-bg: #fee2e2;
  --error-text: #991b1b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.15);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0c0a09;
    --bg-surface: #1c1917;
    --bg-secondary: #292524;
    --text-primary: #f5f5f4;
    --text-secondary: #a8a29e;
    --text-muted: #78716c;
    --border-color: #292524;
    --brand-amber: #f59e0b;
    --brand-amber-light: #451a03;
    --brand-amber-hover: #d97706;
    --quote-bg: #291e10;
    --quote-border: #78350f;
    --user-bg: #3c2415;
    --error-bg: #450a0a;
    --error-text: #fca5a5;
  }
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

.app-layout {
  width: 100%;
  max-width: 900px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.header-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-title h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  display: inline-block;
  vertical-align: middle;
}

.icon-book {
  width: 1.75rem;
  height: 1.75rem;
  color: var(--brand-amber);
}

.quota-badge {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background-color: var(--brand-amber-light);
  color: var(--brand-amber);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--quote-border);
}

/* Chat container */
.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.message {
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 88%;
}

.assistant-message {
  align-self: flex-start;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
}

.user-message {
  align-self: flex-end;
  background-color: var(--user-bg);
  border: 1px solid var(--quote-border);
}

.message-sender {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-amber);
}

.message-content {
  font-size: 0.95rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Quotes in chat */
.quotes-container {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quotes-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-amber);
}

.quote-card {
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background-color: var(--quote-bg);
  border: 1px solid var(--quote-border);
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.quote-card:hover {
  border-color: var(--brand-amber);
  transform: translateY(-1px);
}

.quote-card-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-amber);
}

.quote-card-text {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Citations */
.citations-container {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.citations-container a {
  color: var(--brand-amber);
  text-decoration: underline;
}

/* Footer / Input form */
.footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.prompt-form {
  display: flex;
  gap: 0.5rem;
}

.prompt-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.prompt-input:focus {
  border-color: var(--brand-amber);
}

.submit-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  background-color: var(--brand-amber);
  color: #ffffff;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.submit-btn:hover {
  background-color: var(--brand-amber-hover);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Error Banner */
.error-banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background-color: var(--error-bg);
  color: var(--error-text);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.hidden {
  display: none !important;
}

/* Slide-Over Drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  z-index: 100;
  display: flex;
  justify-content: flex-end;
}

.drawer {
  width: 100%;
  max-width: 480px;
  height: 100%;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  animation: slideIn 0.25s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

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

.drawer-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.drawer-title h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.drawer-chapter {
  font-weight: 600;
  color: var(--brand-amber);
}

.grabar-quote {
  padding: 1rem;
  border-radius: var(--radius-sm);
  background-color: var(--quote-bg);
  border-left: 4px solid var(--brand-amber);
  font-style: italic;
  font-size: 0.9rem;
  line-height: 1.6;
}

.drawer-explanation {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.digilib-link {
  color: var(--brand-amber);
  font-size: 0.85rem;
  text-decoration: underline;
}

.drawer-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.secondary-btn {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-weight: 600;
  cursor: pointer;
}

/* Header Auth & Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-auth-bar {
  display: flex;
  align-items: center;
}

.auth-btn {
  background-color: var(--brand-amber);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.auth-btn:hover {
  opacity: 0.9;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-secondary);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.user-email {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.logout-btn {
  background: none;
  border: none;
  color: var(--error-text);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.logout-btn:hover {
  text-decoration: underline;
}

/* Modal Backdrop & Card */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 420px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.auth-form.hidden {
  display: none;
}

.auth-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.auth-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.auth-input:focus {
  outline: none;
  border-color: var(--brand-amber);
}

.auth-input.code-input {
  letter-spacing: 6px;
  font-size: 1.5rem;
  text-align: center;
  font-weight: 700;
  font-family: monospace;
}

.auth-code-info {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.auth-submit-btn {
  background-color: var(--brand-amber);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  width: 100%;
}

.auth-submit-btn:hover {
  opacity: 0.9;
}

.auth-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.auth-secondary-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  text-align: center;
  padding: 0.5rem;
}

.auth-secondary-btn:hover {
  color: var(--text-primary);
}

.auth-status {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.auth-status.hidden {
  display: none;
}

.auth-status.error {
  background-color: var(--error-bg);
  color: var(--error-text);
}

.auth-status.success {
  background-color: var(--quote-bg);
  color: var(--brand-amber);
  border: 1px solid var(--quote-border);
}