@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #0f1117;
  --surface: #1a1d2e;
  --surface-hover: #222640;
  --surface-alt: #161928;
  --card: #1e2235;
  --text: #e8eaf6;
  --text-secondary: #9ea4c1;
  --muted: #6b7194;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --yellow: #f59e0b;
  --yellow-bg: rgba(245, 158, 11, 0.1);
  --border: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 20px rgba(0,0,0,0.2);
  --radius: 12px;
  --radius-lg: 16px;
  --sidebar-w: 240px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* Layout */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--surface-alt);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 30;
  transition: transform var(--transition);
}

.sidebar-brand {
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.sidebar-brand h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-light), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-brand p {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.sidebar-nav { flex: 1; padding: 0.5rem 0.75rem; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  margin-bottom: 0.15rem;
}

.nav-item:hover { background: var(--surface-hover); color: var(--text); }
.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-light);
  font-weight: 600;
}

.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }

.sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
}

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
}

.page-header {
  padding: 1.5rem 2rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-body { padding: 1.5rem 2rem 3rem; }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  transition: border-color var(--transition);
}

.card:hover { border-color: var(--border-light); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.metric-card { text-align: left; }

.metric-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0.5rem 0 0.25rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

.metric-change {
  font-size: 0.78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  margin-top: 0.35rem;
}

.metric-change.up { background: var(--green-bg); color: var(--green); }
.metric-change.down { background: var(--red-bg); color: var(--red); }

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.chart-container {
  position: relative;
  height: 280px;
}

/* Review Feed */
.review-feed {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 600px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.review-feed::-webkit-scrollbar { width: 4px; }
.review-feed::-webkit-scrollbar-track { background: transparent; }
.review-feed::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.review-item {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0,0,0,0.15);
  transition: all var(--transition);
}

.review-item:hover { border-color: var(--border-light); background: rgba(0,0,0,0.25); }

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.review-meta { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }

.review-author { font-weight: 600; font-size: 0.9rem; }

.review-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.stars { color: var(--yellow); letter-spacing: 1px; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-positive { background: var(--green-bg); color: var(--green); }
.badge-negative { background: var(--red-bg); color: var(--red); }
.badge-neutral { background: var(--yellow-bg); color: var(--yellow); }

.badge-platform {
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

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

.btn-primary:hover { background: var(--accent-light); }

.btn-secondary {
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--surface-hover); color: var(--text); }

.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.8rem; }

.btn-danger { background: var(--red-bg); color: var(--red); }

/* Forms */
input, select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.6rem 0.85rem;
  font-size: 0.88rem;
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
}

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

input::placeholder { color: var(--muted); }

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Filters */
.filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.filter-group { flex: 1; min-width: 140px; }

/* Tables */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 0.75rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.85rem 0.65rem;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

tr:hover td { background: rgba(255,255,255,0.02); }

/* Competitor Cards */
.competitor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.competitor-card { text-align: center; }

.competitor-name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.competitor-rating {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.keyword-tag {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.3rem 0.6rem;
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Auth */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: var(--bg);
}

.auth-card {
  width: min(420px, 92vw);
  text-align: center;
}

.auth-card h1 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, var(--accent-light), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-card .subtitle {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

.auth-card input { margin-bottom: 0.75rem; text-align: left; }
.auth-card .btn { width: 100%; justify-content: center; margin-top: 0.5rem; }

/* Loading */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--muted);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.75rem;
}

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

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.25rem;
  font-size: 0.88rem;
  box-shadow: var(--shadow);
  z-index: 100;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 40;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
  .page-header { padding: 1rem 1rem 0.75rem; padding-left: 3.5rem; }
  .page-body { padding: 1rem; }
  .filter-bar { flex-direction: column; }
  .filter-group { min-width: 100%; }
}