:root {
  --navy-deep: #0a0e1a;
  --navy: #111827;
  --navy-mid: #1a2235;
  --navy-light: #1f2b3e;
  --accent: #3b82f6;
  --accent-bright: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --green: #34d399;
  --green-glow: rgba(52, 211, 153, 0.12);
  --amber: #fbbf24;
  --red: #f87171;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --white: #f9fafb;
  --white-dim: #e5e7eb;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--navy-deep);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ---- Ambient background ---- */
.bg-glow {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 800px 600px at 20% 10%, rgba(59,130,246,0.06), transparent),
    radial-gradient(ellipse 600px 500px at 80% 60%, rgba(52,211,153,0.04), transparent);
}

.noise {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
}

.content { position: relative; z-index: 2; }

/* ---- Login page ---- */
.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.login-box {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  animation: fadeInUp 0.4s ease-out;
}

.login-box h1 {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.login-box p {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--navy-deep);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

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

.form-group input::placeholder {
  color: var(--gray-600);
}

.otp-inputs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

.otp-inputs input {
  width: 3rem;
  height: 3.5rem;
  text-align: center;
  font-size: 1.25rem;
  font-family: var(--font-mono);
  padding: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  width: 100%;
}

.btn-primary:hover { background: var(--accent-bright); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  background: var(--navy-light);
  color: var(--white);
  border: 1px solid var(--gray-600);
}

.btn-secondary:hover { border-color: var(--accent); }

.btn-small {
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
}

.btn-danger {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
}

.btn-danger:hover { background: rgba(248, 113, 113, 0.1); }

.error-message {
  color: var(--red);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  text-align: center;
  min-height: 1.2em;
}

.success-message {
  color: var(--green);
  font-size: 0.85rem;
  text-align: center;
}

.back-link {
  display: block;
  text-align: center;
  margin-top: 1rem;
  color: var(--gray-400);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
}

.back-link:hover { color: var(--accent); }

/* ---- Dashboard layout ---- */
.dashboard-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(16px);
  background: rgba(10, 14, 26, 0.85);
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.dashboard-nav .logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.dashboard-nav .user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dashboard-nav .user-name {
  font-size: 0.85rem;
  color: var(--gray-400);
}

.dashboard-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

/* ---- Stats cards ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius);
  padding: 1.25rem;
  animation: fadeInUp 0.4s ease-out;
}

.stat-card .stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
}

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--white);
}

.stat-card .stat-trend {
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.stat-trend.up { color: var(--green); }
.stat-trend.down { color: var(--red); }
.stat-trend.neutral { color: var(--gray-500); }

/* ---- Section headers ---- */
.section-header {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-500);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ---- Chart ---- */
.chart-container {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  animation: fadeInUp 0.4s ease-out 0.1s both;
}

.chart-container canvas {
  width: 100%;
  height: 200px;
}

/* ---- Topics ---- */
.topics-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  animation: fadeInUp 0.4s ease-out 0.15s both;
}

.topic-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  background: var(--navy-light);
  border: 1px solid rgba(59, 130, 246, 0.12);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--white-dim);
  cursor: pointer;
  transition: all 0.2s;
}

.topic-pill:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
}

.topic-pill .topic-count {
  color: var(--gray-500);
  font-size: 0.65rem;
}

.topic-pill.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-bright);
}

/* ---- Items list ---- */
.items-filters {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.items-filters select,
.items-filters input[type="number"] {
  padding: 0.4rem 0.75rem;
  background: var(--navy-mid);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  outline: none;
}

.items-filters select:focus,
.items-filters input:focus {
  border-color: var(--accent);
}

.items-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.item-card {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.06);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: border-color 0.2s;
  animation: fadeInUp 0.3s ease-out both;
}

.item-card:hover {
  border-color: rgba(59, 130, 246, 0.15);
}

.item-score {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  min-width: 2.5rem;
  text-align: center;
  line-height: 1;
  padding-top: 0.15rem;
}

.item-score.high { color: var(--green); }
.item-score.low { color: var(--gray-500); }

.item-content {
  flex: 1;
  min-width: 0;
}

.item-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
  text-decoration: none;
  display: block;
  margin-bottom: 0.25rem;
}

.item-title:hover { color: var(--accent-bright); }

.item-reason {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-bottom: 0.35rem;
}

.item-meta {
  display: flex;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gray-600);
}

.item-meta .source-badge {
  padding: 0.1rem 0.4rem;
  background: var(--navy-light);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ---- Query interface ---- */
.query-section {
  margin-bottom: 2rem;
}

.query-input-container {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.query-input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--navy);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.query-input:focus { border-color: var(--accent); }
.query-input::placeholder { color: var(--gray-600); }

.query-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.query-suggestion {
  padding: 0.3rem 0.65rem;
  background: var(--navy-mid);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--gray-400);
  cursor: pointer;
  transition: all 0.2s;
}

.query-suggestion:hover {
  border-color: var(--accent);
  color: var(--white);
}

.query-response {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius);
  padding: 1.25rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--white-dim);
  min-height: 3rem;
}

.query-response a {
  color: var(--accent-bright);
  text-decoration: none;
}

.query-response a:hover { text-decoration: underline; }

.query-response strong {
  color: var(--white);
}

.query-response ul, .query-response ol {
  padding-left: 1.5rem;
  margin: 0.5rem 0;
}

.query-response li {
  margin-bottom: 0.35rem;
}

.query-response code {
  background: var(--navy-mid);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* ---- Score URL section ---- */
.score-section {
  margin-bottom: 2rem;
}

.score-input-container {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.score-result {
  animation: fadeInUp 0.3s ease-out;
}

/* ---- Profile & Settings ---- */
.profile-section {
  margin-bottom: 2rem;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.profile-card {
  background: var(--navy);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.profile-card h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  margin-bottom: 1rem;
}

.profile-field {
  margin-bottom: 1rem;
}

.profile-field label {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: 0.3rem;
}

.profile-field input,
.profile-field textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--navy-deep);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.profile-field textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.profile-field input:focus,
.profile-field textarea:focus {
  border-color: var(--accent);
}

.api-key-display {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.5rem 0.75rem;
  background: var(--navy-deep);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--gray-400);
  word-break: break-all;
}

.contacts-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.75rem;
  background: var(--navy-deep);
  border-radius: var(--radius-sm);
}

.contact-item .contact-info {
  font-size: 0.85rem;
}

.contact-item .contact-name {
  color: var(--white);
  font-weight: 500;
}

.contact-item .contact-email {
  color: var(--gray-500);
  font-size: 0.75rem;
}

.add-contact-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.add-contact-form input {
  flex: 1;
  padding: 0.4rem 0.6rem;
  background: var(--navy-deep);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 0.8rem;
  outline: none;
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.tab {
  padding: 0.65rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}

.tab:hover { color: var(--white-dim); }

.tab.active {
  color: var(--accent-bright);
  border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ---- Loading states ---- */
.skeleton {
  background: linear-gradient(90deg, var(--navy-mid) 25%, var(--navy-light) 50%, var(--navy-mid) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-stat { height: 80px; }
.skeleton-chart { height: 240px; }
.skeleton-item { height: 80px; }

.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--gray-600);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ---- Empty states ---- */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--gray-500);
  font-size: 0.9rem;
}

.empty-state .empty-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  opacity: 0.5;
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-top: 1rem;
  padding: 0.5rem 0;
}

.pagination button {
  background: var(--navy-light);
  color: var(--gray-400);
  border: 1px solid var(--gray-600);
  border-radius: 6px;
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.15s ease;
  min-width: 2rem;
  text-align: center;
}

.pagination button:hover:not(:disabled):not(.active) {
  border-color: var(--accent);
  color: var(--white);
}

.pagination button.active {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

.pagination button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.pagination .page-info {
  color: var(--gray-500);
  font-size: 0.7rem;
  margin: 0 0.5rem;
}

/* ---- Cursor blink for streaming ---- */
.cursor-blink::after {
  content: '▊';
  animation: blink 0.8s step-end infinite;
  color: var(--accent);
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

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

@keyframes blink {
  50% { opacity: 0; }
}

/* ---- Hidden utility ---- */
.hidden { display: none !important; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .profile-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-container {
    padding: 1rem;
  }

  .query-input-container,
  .score-input-container {
    flex-direction: column;
  }

  .items-filters {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .login-box {
    padding: 1.5rem;
  }

  .dashboard-nav {
    padding: 0.75rem 1rem;
  }
}