/* ============================================================
   ALPHA FISHCO REPORTS — Design System
   Chairman-level MIS dashboard. Clean, data-dense, professional.
   ============================================================ */

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Navy/teal palette */
  --navy-900: #0a1628;
  --navy-800: #0f2240;
  --navy-700: #162d50;
  --navy-600: #1e3a5f;
  --teal-500: #0d9488;
  --teal-400: #2dd4bf;
  --teal-300: #5eead4;

  /* Neutrals */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Semantic */
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-100: #dcfce7;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-100: #fee2e2;
  --amber-500: #f59e0b;
  --amber-100: #fef3c7;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;

  /* Chart palette */
  --chart-1: #0d9488;
  --chart-2: #3b82f6;
  --chart-3: #f59e0b;
  --chart-4: #8b5cf6;
  --chart-5: #ec4899;
  --chart-6: #06b6d4;
  --chart-7: #f97316;
  --chart-8: #84cc16;

  /* Layout */
  --max-w: 1440px;
  --nav-h: 56px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.12);

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* === NAVIGATION === */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-900);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.nav-brand {
  font-weight: 700;
  font-size: .95rem;
  color: white;
  letter-spacing: -.02em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.nav-brand svg { width: 22px; height: 22px; }

.nav-links {
  display: flex;
  gap: .25rem;
  margin-left: 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: .8rem;
  font-weight: 500;
  padding: .4rem .7rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all .15s;
}
.nav-links a:hover { color: white; background: rgba(255,255,255,.08); }
.nav-links a.active { color: var(--teal-400); background: rgba(13,148,136,.12); }

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.nav-timestamp {
  font-size: .7rem;
  color: var(--gray-500);
  white-space: nowrap;
}

#signOutButton {
  background: transparent;
  border: 1px solid rgba(255,255,255,.15);
  color: var(--gray-400);
  padding: .35rem .75rem;
  border-radius: var(--radius-sm);
  font-size: .75rem;
  cursor: pointer;
  transition: all .15s;
  font-family: var(--font);
}
#signOutButton:hover { color: white; border-color: rgba(255,255,255,.3); }

/* === LAYOUT === */
.page-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem;
}

.page-header {
  margin-bottom: 1.5rem;
}
.page-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -.03em;
}
.page-header .subtitle {
  font-size: .85rem;
  color: var(--gray-500);
  margin-top: .25rem;
}

/* === GRID SYSTEM === */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }
.grid-2-1 { grid-template-columns: 2fr 1fr; }
.grid-1-2 { grid-template-columns: 1fr 2fr; }
.grid-3-2 { grid-template-columns: 3fr 2fr; }

/* === CARDS === */
.card {
  background: white;
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.card-title {
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.card-badge {
  font-size: .65rem;
  font-weight: 600;
  padding: .2rem .5rem;
  border-radius: 99px;
}

/* === KPI CARDS === */
.kpi-card {
  background: white;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.kpi-label {
  font-size: .7rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.kpi-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -.03em;
  line-height: 1.1;
}
.kpi-sub {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .75rem;
  font-weight: 500;
}
.kpi-up { color: var(--green-600); }
.kpi-down { color: var(--red-600); }
.kpi-neutral { color: var(--gray-500); }
.kpi-tag {
  font-size: .65rem;
  padding: .15rem .4rem;
  border-radius: 4px;
  font-weight: 600;
}
.tag-green { background: var(--green-100); color: var(--green-600); }
.tag-red { background: var(--red-100); color: var(--red-600); }
.tag-amber { background: var(--amber-100); color: #b45309; }
.tag-blue { background: var(--blue-100); color: #2563eb; }

/* === TABLES === */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
}
.data-table th {
  text-align: left;
  font-weight: 600;
  color: var(--gray-500);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: .6rem .75rem;
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
}
.data-table td {
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}
.data-table tr:hover td { background: var(--gray-50); }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--font-mono); font-size: .78rem; }
.data-table .positive { color: var(--green-600); }
.data-table .negative { color: var(--red-600); }
.data-table .bold { font-weight: 700; color: var(--gray-900); }
.data-table .subtotal td { border-top: 2px solid var(--gray-300); font-weight: 700; }

/* === CHARTS === */
.chart-container {
  position: relative;
  width: 100%;
}

/* === SECTION TITLES === */
.section-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
  letter-spacing: -.02em;
}

/* === STATUS INDICATORS === */
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.dot-green { background: var(--green-500); }
.dot-red { background: var(--red-500); }
.dot-amber { background: var(--amber-500); }

/* === FOOTER === */
.page-footer {
  text-align: center;
  padding: 1.5rem;
  font-size: .7rem;
  color: var(--gray-400);
  border-top: 1px solid var(--gray-200);
  margin-top: 2rem;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .grid-4, .grid-5, .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .grid-3-2, .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .grid-5, .grid-6 { grid-template-columns: repeat(2, 1fr); }
  .page-container { padding: 1rem; }
  .kpi-value { font-size: 1.3rem; }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4, .grid-5, .grid-6 { grid-template-columns: 1fr; }
}

/* === DASHBOARD HOME CARDS === */
.report-card {
  background: white;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: all .2s;
  position: relative;
  overflow: hidden;
}
.report-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--teal-500);
  opacity: 0;
  transition: opacity .2s;
}
.report-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.report-card:hover::before { opacity: 1; }
.report-card-icon {
  font-size: 1.75rem;
  margin-bottom: .5rem;
}
.report-card h3 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: .35rem;
}
.report-card p {
  font-size: .8rem;
  color: var(--gray-500);
  line-height: 1.5;
  flex: 1;
}
.report-card-footer {
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--gray-100);
  font-size: .7rem;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: .4rem;
}

/* === UTILITY === */
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 1rem; }
.gap-sm { gap: .75rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; align-items: center; }
.hidden { display: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* Print */
@media print {
  .top-nav, #signOutButton { display: none; }
  body { background: white; }
  .card, .kpi-card { box-shadow: none; border: 1px solid #ddd; }
}