/* ============================================================================
   SuperEnalotto Analytics Platform — Stili CSS
   Design: Minimalista, professionale, mobile-first
   ============================================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colori primari */
  --color-primary: #1a56db;
  --color-primary-dark: #1041a3;
  --color-primary-light: #3b82f6;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;

  /* Neutri */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;

  /* Feedback */
  --color-success: #059669;
  --color-error: #dc2626;
  --color-warning: #d97706;
  --color-info: #2563eb;

  /* Spaziatura */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Tipografia */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  /* Altro */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --transition: 150ms ease;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; display: block; }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding: var(--space-xl) 0;
}

/* --- Header / Navbar --- */
.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.navbar-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-brand span { color: var(--color-accent); }

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.navbar-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-primary);
  background: var(--color-surface-alt);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.nav-user .badge {
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: white;
  font-weight: 600;
}

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

.card:hover { box-shadow: var(--shadow-md); }

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

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

.card-body { }

/* --- Grid di Cards --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.stat-card .stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* --- Lotto Balls --- */
.lotto-balls {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  align-items: center;
}

.lotto-ball {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  box-shadow: 0 2px 4px rgba(26, 86, 219, 0.3);
  flex-shrink: 0;
}

.lotto-ball.jolly {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.lotto-ball.superstar {
  background: linear-gradient(135deg, #8b5cf6, #6d28d9);
  box-shadow: 0 2px 4px rgba(139, 92, 246, 0.3);
}

.lotto-ball.small {
  width: 36px;
  height: 36px;
  font-size: var(--font-size-xs);
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

.form-control.error {
  border-color: var(--color-error);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--space-xs);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.checkbox-group input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--color-primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-surface-alt); }

.btn-accent {
  background: var(--color-accent);
  color: white;
}
.btn-accent:hover:not(:disabled) { background: var(--color-accent-dark); }

.btn-danger {
  background: var(--color-error);
  color: white;
}
.btn-danger:hover:not(:disabled) { background: #b91c1c; }

.btn-sm { padding: 0.375rem 0.75rem; font-size: var(--font-size-xs); }
.btn-lg { padding: 0.875rem 1.75rem; font-size: var(--font-size-base); }
.btn-block { width: 100%; }

/* --- Tables --- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

thead {
  background: var(--color-surface-alt);
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tbody tr:hover {
  background: var(--color-surface-alt);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.6;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-error { background: #fecaca; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-neutral { background: var(--color-surface-alt); color: var(--color-text-secondary); }

/* --- Auth Page (Login / Register) --- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: var(--space-md);
}

.auth-container {
  width: 100%;
  max-width: 440px;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: white;
}

.auth-header h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.auth-header h1 span { color: var(--color-accent); }

.auth-header p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.auth-tab {
  flex: 1;
  padding: var(--space-sm) 0;
  text-align: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: var(--font-sans);
}

.auth-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.auth-form { display: none; }
.auth-form.active { display: block; }

.auth-footer {
  text-align: center;
  margin-top: var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

/* --- Alerts / Toasts --- */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fecaca; color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
  min-width: 280px;
  max-width: 400px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Disclaimer Banner --- */
.disclaimer-banner {
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: var(--font-size-xs);
  color: #92400e;
  line-height: 1.5;
  margin-bottom: var(--space-lg);
}

.disclaimer-banner strong { display: block; margin-bottom: var(--space-xs); }

/* --- Charts container --- */
.chart-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 250px;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.pagination button {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-size: var(--font-size-sm);
  transition: all var(--transition);
}

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

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

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- Loading Spinner --- */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: var(--space-xl) auto;
}

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

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  flex-direction: column;
  gap: var(--space-md);
  color: var(--color-text-secondary);
}

/* --- Modal --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal-backdrop.active { display: flex; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--space-xs);
}

/* --- Footer --- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  margin-top: auto;
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

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

/* --- Utility --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.font-mono { font-family: var(--font-mono); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  .navbar .container { flex-wrap: wrap; }
  .navbar-nav { gap: var(--space-sm); flex-wrap: wrap; }

  .cards-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .lotto-ball { width: 38px; height: 38px; font-size: var(--font-size-xs); }

  .footer .container { flex-direction: column; text-align: center; }

  .modal { padding: var(--space-lg); }

  .table-wrapper { font-size: var(--font-size-xs); }
  th, td { padding: 0.5rem 0.625rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .auth-card { padding: var(--space-lg); }
}