/* ═══════════════════════════════════════════════════════════
   Vuka Shared Styles - Dark theme with amber accents
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-hover: #1a1a1a;
  --surface-active: #1f1f1f;
  --border: #222;
  --border-light: #333;
  --amber: #f59e0b;
  --amber-dim: #b45309;
  --amber-glow: rgba(245, 158, 11, 0.15);
  --green: #22c55e;
  --green-dim: #166534;
  --green-glow: rgba(34, 197, 94, 0.15);
  --blue: #3b82f6;
  --blue-dim: #1e40af;
  --blue-glow: rgba(59, 130, 246, 0.15);
  --red: #ef4444;
  --red-dim: #991b1b;
  --red-glow: rgba(239, 68, 68, 0.15);
  --text: #e5e5e5;
  --text-dim: #737373;
  --text-muted: #525252;
  --white: #fafafa;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--white);
}

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Navigation ──────────────────────────────────────── */
.app-nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.app-nav .logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.5px;
  text-decoration: none;
}
.app-nav .logo span { color: var(--amber); }

.nav-links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-link {
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.2s;
  text-decoration: none;
}
.nav-link:hover {
  color: var(--white);
  background: var(--surface);
  text-decoration: none;
}
.nav-link.active {
  color: var(--amber);
  background: var(--amber-glow);
}

.nav-user {
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  background: none;
  transition: all 0.2s;
}
.nav-user:hover {
  color: var(--text);
  border-color: var(--border-light);
}

/* ─── Layout ──────────────────────────────────────────── */
.page-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px 60px;
}

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 0.95rem;
  color: var(--text-dim);
}

/* ─── Cards ───────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

/* ─── Stats Grid ──────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.2s;
}
.stat-card:hover {
  border-color: var(--border-light);
  background: var(--surface-hover);
}
.stat-card.active {
  border-color: var(--amber);
  background: var(--amber-glow);
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ─── Form Elements ───────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  transition: border-color 0.2s;
  outline: none;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23737373' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--amber);
  cursor: pointer;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ─── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--amber);
  color: #000;
}
.btn-primary:hover {
  background: #eab308;
  text-decoration: none;
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-light);
  text-decoration: none;
}

.btn-ghost {
  background: none;
  color: var(--text-dim);
  padding: 8px 12px;
}
.btn-ghost:hover {
  color: var(--white);
  background: var(--surface);
}

.btn-danger {
  background: var(--red-glow);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ─── Badges ──────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-new {
  background: var(--amber-glow);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-drafted {
  background: var(--blue-glow);
  color: var(--blue);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.badge-responded {
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.badge-archived {
  background: rgba(82, 82, 82, 0.15);
  color: var(--text-muted);
  border: 1px solid rgba(82, 82, 82, 0.25);
}

/* ─── Message List ────────────────────────────────────── */
.message-list {
  list-style: none;
}

.message-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.message-item:hover {
  background: var(--surface-hover);
}
.message-item:last-child {
  border-bottom: none;
}
.message-item.active {
  background: var(--surface-active);
  border-left: 3px solid var(--amber);
}

.message-info {
  flex: 1;
  min-width: 0;
}

.message-sender {
  font-weight: 600;
  color: var(--white);
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.message-subject {
  font-size: 0.85rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.message-preview {
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.message-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ─── Message Detail Panel ────────────────────────────── */
.detail-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-top: 16px;
  overflow: hidden;
}

.detail-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.detail-from {
  font-size: 0.85rem;
  color: var(--text-dim);
}
.detail-from strong {
  color: var(--white);
}

.detail-subject {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-top: 4px;
}

.detail-body {
  padding: 20px 24px;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  white-space: pre-wrap;
  border-bottom: 1px solid var(--border);
}

.detail-ai {
  padding: 20px 24px;
  background: rgba(59, 130, 246, 0.03);
  border-bottom: 1px solid var(--border);
}

.ai-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.ai-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ai-confidence {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.confidence-high { color: var(--green); border-color: rgba(34, 197, 94, 0.3); }
.confidence-medium { color: var(--amber); border-color: rgba(245, 158, 11, 0.3); }
.confidence-low { color: var(--text-dim); }

.ai-faq-match {
  font-size: 0.75rem;
  color: var(--green);
  background: var(--green-glow);
  padding: 2px 8px;
  border-radius: 4px;
}

.detail-actions {
  padding: 16px 24px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ─── Empty State ─────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 24px;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-title {
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 8px;
}

.empty-text {
  font-size: 0.9rem;
  color: var(--text-dim);
  max-width: 400px;
  margin: 0 auto 20px;
}

/* ─── Alerts ──────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--red-glow);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.alert-info {
  background: var(--amber-glow);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

/* ─── Link Box ────────────────────────────────────────── */
.link-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
}

.link-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--amber);
  font-family: 'DM Sans', monospace;
  font-size: 0.85rem;
  outline: none;
}

/* ─── Loading ─────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 40px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ─── FAQ Item ────────────────────────────────────────── */
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 10px;
}

.faq-question {
  font-weight: 600;
  color: var(--white);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.faq-answer {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.faq-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

/* ─── Auth Pages ──────────────────────────────────────── */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-align: center;
  margin-bottom: 8px;
  text-decoration: none;
  display: block;
}
.auth-logo span { color: var(--amber); }

.auth-subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ─── Inquiry Page ────────────────────────────────────── */
.inquiry-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.inquiry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 560px;
}

.inquiry-biz-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}

.inquiry-biz-type {
  font-size: 0.8rem;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.inquiry-biz-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.inquiry-success {
  text-align: center;
  padding: 40px 0;
}

.inquiry-success-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

/* ─── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .app-nav {
    padding: 12px 16px;
  }
  .nav-links {
    gap: 4px;
  }
  .nav-link {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  .page-container {
    padding: 80px 16px 40px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .detail-actions {
    flex-direction: column;
  }
  .auth-card, .inquiry-card {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .stat-card {
    padding: 12px 14px;
  }
  .stat-value {
    font-size: 1.4rem;
  }
}