/* ========================================
   MUSEALYTICS - Layout Styles
   App structure, Header, Cards, Footer
   ======================================== */

/* ----------------------------------------
   Layout
   ---------------------------------------- */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6);
}

.section {
  margin-bottom: var(--space-6);
}

/* ----------------------------------------
   Header
   ---------------------------------------- */
.header {
  background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
  padding: var(--space-12) var(--space-6);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 0%, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}

.header-inner {
  position: relative;
  z-index: 1;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: 'Chewy', cursive;
  font-size: var(--font-3xl);
  font-weight: 400;
  color: white;
  letter-spacing: 0.02em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: contain;
}

.tagline {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-lg);
  margin-top: var(--space-2);
}

.welcome-message {
  color: white;
  font-size: var(--font-xl);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
}

.user-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.8);
  transform: scale(1.05);
}

.btn-logout svg {
  width: 18px;
  height: 18px;
}

/* ----------------------------------------
   Cards
   ---------------------------------------- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  overflow: hidden;
}

.card.card-overflow {
  overflow: visible;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.card-header h2,
.card-header h3 {
  font-size: var(--font-lg);
  font-weight: 600;
}

.card-desc {
  color: var(--text-secondary);
  font-size: var(--font-sm);
  margin-bottom: var(--space-5);
}

/* ----------------------------------------
   Connect Card
   ---------------------------------------- */
.connect-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.connect-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-6);
  color: var(--spotify);
}

.connect-icon svg {
  width: 100%;
  height: 100%;
}

.connect-card h2 {
  font-size: var(--font-2xl);
  margin-bottom: var(--space-2);
}

.connect-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.connect-note {
  margin-top: var(--space-4);
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: var(--space-6);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-nav {
  display: flex;
  gap: var(--space-6);
}

.footer-nav a {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer-nav a:hover {
  color: var(--text-primary);
}

/* ----------------------------------------
   Stats Grid
   ---------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--duration-fast);
}

.stat-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  color: var(--accent);
  flex-shrink: 0;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.stat-label {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ----------------------------------------
   Charts Grid
   ---------------------------------------- */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}