/* ══════════════════════════════════════════════════
   Facturacion CR — Dark Financial Dashboard
   ══════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=JetBrains+Mono:wght@400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg-primary: #0b0b0e;
  --bg-secondary: #121216;
  --bg-card: #18181d;
  --bg-card-hover: #1e1e24;
  --bg-input: #1c1c22;
  --border: #27272d;
  --border-light: #32323a;

  --text-primary: #e8e8ed;
  --text-secondary: #9d9da8;
  --text-muted: #6b6b78;
  --text-inverse: #0b0b0e;

  --accent-gold: #f0b429;
  --accent-gold-dim: #b8861e;
  --accent-green: #22c55e;
  --accent-green-bg: rgba(34, 197, 94, 0.12);
  --accent-red: #ef4444;
  --accent-red-bg: rgba(239, 68, 68, 0.12);
  --accent-blue: #3b82f6;
  --accent-blue-bg: rgba(59, 130, 246, 0.12);
  --accent-amber: #f59e0b;
  --accent-amber-bg: rgba(245, 158, 11, 0.12);

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-elevated: 0 4px 12px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-gold); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .75; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Layout ── */
.app-container { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.sidebar-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.02em;
}
.sidebar-brand span { color: var(--accent-gold); }
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all .15s;
}
.sidebar-nav a:hover, .sidebar-nav a.active {
  background: var(--bg-card);
  color: var(--text-primary);
}
.sidebar-nav a.active { border-left: 2px solid var(--accent-gold); }
.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.sidebar-footer form { margin-top: 8px; }

.main-content {
  flex: 1;
  padding: 32px 40px;
  max-width: 1400px;
  overflow-y: auto;
}

/* ── Header ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 2px;
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all .2s;
}
.card:hover { border-color: var(--border-light); }
.card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 400;
}
.card-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.card-value.positive { color: var(--accent-green); }
.card-value.negative { color: var(--accent-red); }
.card-value.neutral { color: var(--accent-gold); }

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  position: relative;
  overflow: hidden;
}
.stat-card .card-value {
  font-size: 1.25rem;
  word-break: break-word;
}
.stat-card .stat-icon {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 1.8rem;
  opacity: .08;
}
.stat-card .stat-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Alerts / Reminders ── */
.alert-card {
  background: var(--accent-amber-bg);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.alert-card .alert-icon { font-size: 1.3rem; }
.alert-card .alert-text { font-size: 0.9rem; color: var(--accent-amber); font-weight: 500; }
.alert-card.vencido { background: var(--accent-red-bg); border-color: rgba(239,68,68,0.25); }
.alert-card.vencido .alert-text { color: var(--accent-red); }

/* ── Month Selector ── */
.period-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.period-nav select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
}
.period-nav select:focus { outline: none; border-color: var(--accent-gold); }
.period-nav .period-label {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ── Tables ── */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
thead th {
  background: var(--bg-secondary);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:hover { background: var(--bg-card-hover); }
tbody tr:last-child td { border-bottom: none; }
.text-mono { font-family: var(--font-mono); font-size: 0.8rem; }
.text-right { text-align: right; }
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge-compra { background: var(--accent-red-bg); color: var(--accent-red); }
.badge-venta { background: var(--accent-green-bg); color: var(--accent-green); }
.badge-otro { background: var(--accent-blue-bg); color: var(--accent-blue); }

/* ── Sections ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 28px 0 16px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-primary);
}
.section-header .count {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .15s;
}
.btn-primary {
  background: var(--accent-gold);
  color: var(--text-inverse);
}
.btn-primary:hover { background: #d4a020; opacity: 1; }
.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border-light); opacity: 1; }
.btn-danger {
  background: var(--accent-red);
  color: white;
}
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
}
.form-input:focus { outline: none; border-color: var(--accent-gold); }

/* ── Login ── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
}
.login-card {
  width: 360px;
  padding: 40px 32px;
}
.login-card h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: 4px;
}
.login-card .login-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}
.flash-msg {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.flash-error { background: var(--accent-red-bg); color: var(--accent-red); border: 1px solid rgba(239,68,68,0.2); }
.flash-success { background: var(--accent-green-bg); color: var(--accent-green); border: 1px solid rgba(34,197,94,0.2); }
.flash-info { background: var(--accent-blue-bg); color: var(--accent-blue); border: 1px solid rgba(59,130,246,0.2); }
.btn-block { width: 100%; justify-content: center; padding: 12px; }

/* ── Detail Page ── */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.detail-item { }
.detail-item .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.detail-item .value {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-top: 2px;
}
.detail-item .value.mono { font-family: var(--font-mono); }
.line-item { margin-bottom: 4px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { width: 60px; padding: 16px 8px; }
  .sidebar-brand, .sidebar-nav a span, .sidebar-footer span { display: none; }
  .sidebar-nav a { justify-content: center; padding: 10px; }
  .main-content { padding: 20px 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.card, .alert-card, .stat-card { animation: fadeIn .3s ease-out; }