/* ============================================
   CFO Dashboard — Premium Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Background */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f35;
  --bg-card-hover: #222842;
  --bg-sidebar: #0d1225;
  --bg-input: #151b30;

  /* Accent Colors */
  --blue: #3b82f6;
  --blue-dark: #1e40af;
  --green: #22c55e;
  --green-dark: #15803d;
  --purple: #a855f7;
  --purple-dark: #7e22ce;
  --magenta: #ec4899;
  --magenta-dark: #be185d;
  --teal: #14b8a6;
  --teal-dark: #0f766e;
  --orange: #f59e0b;
  --red: #ef4444;
  --indigo: #6366f1;

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Borders */
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow-blue: 0 0 20px rgba(59,130,246,0.15);
  --shadow-glow-green: 0 0 20px rgba(34,197,94,0.15);
  --shadow-glow-purple: 0 0 20px rgba(168,85,247,0.15);
  --shadow-glow-magenta: 0 0 20px rgba(236,72,153,0.15);
  --shadow-glow-teal: 0 0 20px rgba(20,184,166,0.15);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { font-size: 14px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

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

/* ============================================
   Layout
   ============================================ */
.dashboard-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
}

.sidebar-logo h1 {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.sidebar-logo h1 span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  -webkit-text-fill-color: var(--text-muted);
}

/* ---- Filter Groups ---- */
.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-group label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.filter-group select,
.filter-group input[type="date"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  transition: var(--transition);
  appearance: none;
  cursor: pointer;
  outline: none;
}

.filter-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.filter-group select:focus,
.filter-group input[type="date"]:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.filter-group select:hover,
.filter-group input[type="date"]:hover {
  border-color: var(--border-hover);
}

.custom-date-range {
  display: none;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.custom-date-range.visible { display: flex; }

.custom-date-range .date-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.custom-date-range .date-row span {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 30px;
}

.btn-apply {
  margin-top: 8px;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-apply:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-blue);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.last-updated {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.last-updated .dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  padding: 28px 32px;
  overflow-y: auto;
}

.main-header {
  margin-bottom: 28px;
}

.main-header h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.main-header p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============================================
   Section Headers
   ============================================ */
.section {
  margin-bottom: 36px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.section-header .section-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.section-header .section-icon.blue {
  background: rgba(59,130,246,0.12);
  color: var(--blue);
}

.section-header .section-icon.purple {
  background: rgba(168,85,247,0.12);
  color: var(--purple);
}

.section-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.section-header h3 span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================
   KPI Cards Grid
   ============================================ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.kpi-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* Color variants */
.kpi-card.green::before { background: linear-gradient(90deg, var(--green), var(--teal)); }
.kpi-card.green:hover { box-shadow: var(--shadow-glow-green); }

.kpi-card.blue::before { background: linear-gradient(90deg, var(--blue), var(--indigo)); }
.kpi-card.blue:hover { box-shadow: var(--shadow-glow-blue); }

.kpi-card.purple::before { background: linear-gradient(90deg, var(--purple), var(--magenta)); }
.kpi-card.purple:hover { box-shadow: var(--shadow-glow-purple); }

.kpi-card.magenta::before { background: linear-gradient(90deg, var(--magenta), var(--red)); }
.kpi-card.magenta:hover { box-shadow: var(--shadow-glow-magenta); }

.kpi-card.teal::before { background: linear-gradient(90deg, var(--teal), var(--green)); }
.kpi-card.teal:hover { box-shadow: var(--shadow-glow-teal); }

.kpi-card.indigo::before { background: linear-gradient(90deg, var(--indigo), var(--blue)); }
.kpi-card.indigo:hover { box-shadow: var(--shadow-glow-blue); }

.kpi-card .kpi-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kpi-card .kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}

.kpi-card.green .kpi-value { color: var(--green); }
.kpi-card.blue .kpi-value { color: var(--blue); }
.kpi-card.purple .kpi-value { color: var(--purple); }
.kpi-card.magenta .kpi-value { color: var(--magenta); }
.kpi-card.teal .kpi-value { color: var(--teal); }
.kpi-card.indigo .kpi-value { color: var(--indigo); }

.kpi-card .kpi-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.kpi-card .kpi-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 600;
  margin-top: 8px;
}

.kpi-badge.count-badge {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
}

/* Stagger animation */
.kpi-card:nth-child(1) { animation-delay: 0.05s; }
.kpi-card:nth-child(2) { animation-delay: 0.1s; }
.kpi-card:nth-child(3) { animation-delay: 0.15s; }
.kpi-card:nth-child(4) { animation-delay: 0.2s; }
.kpi-card:nth-child(5) { animation-delay: 0.25s; }
.kpi-card:nth-child(6) { animation-delay: 0.3s; }
.kpi-card:nth-child(7) { animation-delay: 0.35s; }
.kpi-card:nth-child(8) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Equation Row (for instalment section)
   ============================================ */
.equation-row {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex-wrap: wrap;
}

.equation-row .kpi-card {
  flex: 1;
  min-width: 200px;
}

.equation-operator {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-muted);
  min-width: 36px;
  align-self: center;
}

.equation-row .result-card {
  background: linear-gradient(135deg, rgba(168,85,247,0.08), rgba(236,72,153,0.08));
  border-color: rgba(168,85,247,0.2);
}

/* ============================================
   Summary Banner
   ============================================ */
.summary-banner {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(99,102,241,0.08));
  border: 1px solid rgba(59,130,246,0.15);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}

.summary-banner .summary-item {
  text-align: center;
}

.summary-banner .summary-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.summary-banner .summary-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--blue);
}

.summary-banner .summary-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ============================================
   Loading & Error States
   ============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 1000;
  transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.error-banner {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  color: var(--red);
  font-size: 0.85rem;
  display: none;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.error-banner.visible { display: flex; }

.error-banner .error-icon { font-size: 1.2rem; }

/* ============================================
   Demo Mode Banner
   ============================================ */
.demo-banner {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  color: var(--orange);
  font-size: 0.8rem;
  display: none;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.demo-banner.visible { display: flex; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .dashboard-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    padding: 16px;
    gap: 12px;
  }

  .sidebar-logo {
    width: 100%;
    padding-bottom: 12px;
  }

  .filter-group {
    flex: 1;
    min-width: 180px;
  }

  .sidebar-footer { width: 100%; margin-top: 0; }

  .main-content { padding: 20px 16px; }

  .kpi-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
  }
}

@media (max-width: 640px) {
  html { font-size: 13px; }

  .kpi-grid {
    grid-template-columns: 1fr 1fr;
  }

  .equation-row {
    flex-direction: column;
    align-items: stretch;
  }

  .equation-operator {
    transform: rotate(90deg);
    margin: -4px auto;
  }

  .summary-banner {
    flex-direction: column;
    text-align: center;
  }

  .summary-banner .summary-divider {
    width: 100%;
    height: 1px;
  }
}

/* ============================================
   Login Overlay
   ============================================ */
.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.5s ease;
}

.login-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.login-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.login-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.login-card input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 16px;
  transition: var(--transition);
}

.login-card input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.btn-login {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

.login-error {
  margin-top: 16px;
  color: var(--red);
  font-size: 0.85rem;
  background: rgba(239,68,68,0.1);
  padding: 8px;
  border-radius: var(--radius-sm);
}

.login-error.hidden {
  display: none;
}