/* =========================================================================
   SJMIT CS&E Demand Forecasting System - Stylesheet
   Modern Glassmorphism & High-Contrast Cyber Palette
   ========================================================================= */

:root {
  --bg-primary: #0b1329;
  --bg-secondary: #111e38;
  --bg-sidebar: rgba(15, 23, 42, 0.92);
  --bg-topbar: rgba(17, 30, 56, 0.75);
  --bg-card: rgba(22, 36, 68, 0.7);
  --bg-card-hover: rgba(30, 48, 88, 0.85);
  --border-color: rgba(99, 140, 219, 0.15);
  --border-bright: rgba(56, 189, 248, 0.4);
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --color-water: #06b6d4;
  --color-water-glow: rgba(6, 182, 212, 0.25);
  --color-energy: #f59e0b;
  --color-energy-glow: rgba(245, 158, 11, 0.25);
  
  --color-svm: #818cf8;
  --color-knn: #ec4899;
  --color-logreg: #10b981;
  
  --color-danger: #f43f5e;
  --color-warning: #f59e0b;
  --color-success: #10b981;
  --color-info: #38bdf8;
  
  --input-bg: rgba(15, 23, 42, 0.75);
  --table-header-bg: rgba(15, 23, 42, 0.85);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --glass-blur: blur(12px);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
}

/* APP SHELL LAYOUT */
.app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
  width: 280px;
  background: var(--bg-sidebar);
  backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
  transition: all 0.3s ease;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--color-info);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.nav-links {
  list-style: none;
  padding: 20px 12px;
  flex-grow: 1;
  overflow-y: auto;
}

.nav-item {
  margin-bottom: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  transform: translateX(4px);
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.18), rgba(99, 102, 241, 0.12));
  color: #38bdf8;
  border-left: 3px solid var(--color-water);
  font-weight: 600;
}

.nav-link i {
  font-size: 1.15rem;
  width: 22px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  background: rgba(10, 16, 31, 0.6);
  font-size: 0.72rem;
  color: var(--text-dim);
}

/* MAIN CONTENT AREA */
.main-wrapper {
  margin-left: 280px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  height: 68px;
  background: var(--bg-topbar);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.model-status-pills {
  display: flex;
  gap: 10px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.dot-green { background-color: var(--color-success); box-shadow: 0 0 8px var(--color-success); }
.dot-cyan { background-color: var(--color-water); box-shadow: 0 0 8px var(--color-water); }
.dot-pink { background-color: var(--color-knn); box-shadow: 0 0 8px var(--color-knn); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: white;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--text-muted);
}

.btn-water {
  background: linear-gradient(135deg, #0891b2, #06b6d4);
  color: #fff;
}

.btn-energy {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  color: #fff;
}

/* CONTENT CONTAINER */
.content-body {
  padding: 32px;
  flex: 1;
}

/* KPI CARDS GRID */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.kpi-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

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

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-water), var(--color-energy));
}

.kpi-card.water::before { background: var(--color-water); }
.kpi-card.energy::before { background: var(--color-energy); }
.kpi-card.alert::before { background: var(--color-danger); }
.kpi-card.models::before { background: var(--color-svm); }

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.kpi-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.kpi-icon.water { background: rgba(6, 182, 212, 0.15); color: var(--color-water); }
.kpi-icon.energy { background: rgba(245, 158, 11, 0.15); color: var(--color-energy); }
.kpi-icon.alert { background: rgba(244, 63, 94, 0.15); color: var(--color-danger); }
.kpi-icon.models { background: rgba(129, 140, 248, 0.15); color: var(--color-svm); }

.kpi-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.kpi-footer {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* SECTION CARDS */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 28px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* GRID LAYOUTS */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* FORM ELEMENTS */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-water);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

select.form-control {
  cursor: pointer;
}

/* TABLES */
.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.data-table th {
  background: var(--table-header-bg);
  color: var(--text-muted);
  padding: 12px 14px;
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* BADGES */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.74rem;
  font-weight: 600;
}
.badge-urban { background: rgba(6, 182, 212, 0.2); color: var(--color-water); border: 1px solid rgba(6, 182, 212, 0.4); }
.badge-rural { background: rgba(16, 185, 129, 0.2); color: var(--color-success); border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-danger { background: rgba(244, 63, 94, 0.2); color: var(--color-danger); border: 1px solid rgba(244, 63, 94, 0.4); }
.badge-success { background: rgba(16, 185, 129, 0.2); color: var(--color-success); border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: var(--color-warning); border: 1px solid rgba(245, 158, 11, 0.4); }

/* SLIDERS */
.slider-container {
  margin: 16px 0;
}
.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 6px;
  color: var(--text-muted);
}
.slider-value {
  color: #38bdf8;
  font-weight: 700;
  font-family: var(--font-mono);
}
input[type="range"] {
  width: 100%;
  accent-color: var(--color-water);
  background: rgba(255, 255, 255, 0.1);
  height: 6px;
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

/* CHART CONTAINERS */
.chart-box {
  position: relative;
  width: 100%;
  min-height: 280px;
}

/* ALERTS & NOTIFICATIONS */
.alert-box {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
}
.alert-success { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.3); color: #6ee7b7; }
.alert-warning { background: rgba(245, 158, 11, 0.15); border: 1px solid rgba(245, 158, 11, 0.3); color: #fcd34d; }
.alert-danger { background: rgba(244, 63, 94, 0.15); border: 1px solid rgba(244, 63, 94, 0.3); color: #fda4af; }
.alert-info { background: rgba(56, 189, 248, 0.15); border: 1px solid rgba(56, 189, 248, 0.3); color: #7dd3fc; }

/* PRINT STYLES FOR REPORT */
@media print {
  .sidebar, .topbar, .btn, .no-print {
    display: none !important;
  }
  .main-wrapper {
    margin-left: 0 !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .card {
    background: #fff !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    color: #000 !important;
  }
  .data-table th {
    background: #f1f5f9 !important;
    color: #000 !important;
  }
  .data-table td {
    color: #000 !important;
  }
}