/* ═══════════════════════════════════════════════════════
   KHARJA KPI DASHBOARD — PREMIUM DESIGN SYSTEM (style.css)
   ═══════════════════════════════════════════════════════ */

/* --- Fonts & Base Reset --- */
:root {
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Color Palette (Sleek Dark Glassmorphism) */
  --bg-primary: #080b11;
  --bg-secondary: #0f1420;
  --bg-card: rgba(22, 28, 45, 0.45);
  --bg-glass: rgba(15, 20, 32, 0.7);
  --border-glass: rgba(255, 255, 255, 0.06);
  --border-focus: rgba(255, 107, 74, 0.4);
  
  /* Brand Accents */
  --accent-orange: #ff6b4a;
  --accent-orange-hover: #ff856b;
  --accent-orange-glow: rgba(255, 107, 74, 0.25);
  --accent-indigo: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #ff6b4a;

  /* Shadows & Radius */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(255, 107, 74, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(79, 70, 229, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(255, 107, 74, 0.06) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Scrollbar customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 107, 74, 0.4);
}

/* Helper Utilities */
.hidden {
  display: none !important;
}

/* ═══════════════════ HEADER ═══════════════════ */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 32px;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.75rem;
  background: linear-gradient(135deg, #fff 30%, var(--accent-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.badge {
  font-family: var(--font-title);
  background: rgba(255, 107, 74, 0.12);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 107, 74, 0.2);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 0.5rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-amber);
  box-shadow: 0 0 8px var(--accent-amber);
  transition: all var(--transition-normal);
}

.status-dot.online {
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.status-dot.offline {
  background-color: var(--accent-red);
  box-shadow: 0 0 8px var(--accent-red);
}

/* ═══════════════════ GLOBAL DATE FILTER ═══════════════════ */
.global-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  background: rgba(15, 20, 32, 0.3);
  border-bottom: 1px solid var(--border-glass);
}

.filter-dates {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.date-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  outline: none;
  transition: all var(--transition-fast);
}

.date-input:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 8px var(--accent-orange-glow);
}

.date-sep {
  color: var(--text-muted);
  font-weight: 500;
}

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--accent-orange);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background-color: var(--accent-orange-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.filter-presets {
  display: flex;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}

.preset-btn {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.preset-btn.active {
  background: rgba(255, 107, 74, 0.1);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 107, 74, 0.15);
}

/* ═══════════════════ LOADING OVERLAY ═══════════════════ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 11, 17, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  z-index: 1000;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 107, 74, 0.1);
  border-radius: 50%;
  border-top-color: var(--accent-orange);
  animation: spin 1s linear infinite;
  box-shadow: var(--shadow-glow);
}

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

.loading-overlay p {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: 0.25px;
}

/* ═══════════════════ TAB NAVIGATION ═══════════════════ */
.tab-nav {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 2rem 0;
  background: rgba(15, 20, 32, 0.15);
  border-bottom: 1px solid var(--border-glass);
  overflow-x: auto;
}

.tab-btn {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  padding: 0.85rem 1.5rem;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
  color: var(--accent-orange);
  background: rgba(22, 28, 45, 0.4);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--accent-orange);
  border-top-left-radius: 3px;
  border-top-right-radius: 3px;
  box-shadow: 0 -2px 10px rgba(255, 107, 74, 0.4);
}

/* ═══════════════════ MAIN CONTENT PANELS ═══════════════════ */
.tab-section {
  flex: 1;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════ SUMMARY CARDS ═══════════════════ */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.summary-cards-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.summary-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.summary-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--accent-indigo);
  opacity: 0.7;
}

/* Dynamic card highlights based on position */
.summary-cards > .summary-card:nth-child(1)::before { background-color: var(--accent-cyan); }
.summary-cards > .summary-card:nth-child(2)::before { background-color: var(--accent-orange); }
.summary-cards > .summary-card:nth-child(3)::before { background-color: var(--accent-green); }
.summary-cards > .summary-card:nth-child(4)::before { background-color: var(--accent-purple); }
.summary-cards > .summary-card:nth-child(5)::before { background-color: var(--accent-amber); }
.summary-cards > .summary-card:nth-child(6)::before { background-color: var(--accent-indigo); }

.summary-icon {
  font-size: 2.25rem;
  width: 54px;
  height: 54px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.summary-body {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.summary-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.summary-value {
  font-family: var(--font-title);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.15;
}

.summary-delta {
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.summary-delta.positive {
  color: var(--accent-green);
}

.summary-delta.negative {
  color: var(--accent-red);
}

.summary-delta.neutral {
  color: var(--text-muted);
}

/* ═══════════════════ CHARTS GRID ═══════════════════ */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.chart-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.chart-card.full-width {
  grid-column: span 2;
}

.chart-card.half-width {
  grid-column: span 1;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.card-header h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.25rem;
}

/* Custom Chart Mini-DatePicker popups */
.chart-date-picker {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 10;
  margin-top: 0.5rem;
}

.chart-date-picker.hidden {
  display: none;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 320px;
}

.chart-container-lg {
  height: 400px;
}

/* ═══════════════════ AUTHENTICATION FORM MODAL (DYNAMIC/PREMIUM) ═══════════════════ */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 14, 0.9);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
}

.auth-overlay.active {
  opacity: 1;
  visibility: visible;
}

.auth-card {
  background: radial-gradient(135deg, rgba(22, 28, 45, 0.85) 0%, rgba(15, 20, 32, 0.95) 100%);
  border: 1px solid var(--border-glass);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), var(--shadow-glow);
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  text-align: center;
  transform: translateY(20px) scale(0.95);
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.auth-overlay.active .auth-card {
  transform: translateY(0) scale(1);
}

.auth-header {
  margin-bottom: 2.25rem;
}

.auth-logo {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 2.5rem;
  background: linear-gradient(135deg, #fff 20%, var(--accent-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-input {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.auth-input:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 10px var(--accent-orange-glow);
  background: rgba(255, 255, 255, 0.05);
}

.auth-button {
  margin-top: 1rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.25px;
  background: var(--accent-orange);
  color: #fff;
  padding: 0.9rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-fast);
}

.auth-button:hover {
  background: var(--accent-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(255, 107, 74, 0.35);
}

.auth-button:active {
  transform: translateY(0);
}

.auth-error {
  color: var(--accent-red);
  font-size: 0.85rem;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.15);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  display: none;
  text-align: left;
  margin-bottom: 0.5rem;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* ═══════════════════ FOOTER ═══════════════════ */
.footer {
  text-align: center;
  padding: 2.5rem;
  background: rgba(8, 11, 17, 0.6);
  border-top: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer strong {
  color: var(--text-secondary);
}

/* ═══════════════════ RESPONSIVE BREAKPOINTS ═══════════════════ */
@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .chart-card.full-width, .chart-card.half-width {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem 1.5rem;
  }
  
  .header-right {
    align-self: stretch;
    justify-content: center;
  }

  .global-filter {
    padding: 1.25rem 1.5rem;
  }

  .tab-nav {
    padding: 1rem 1.5rem 0;
  }

  .tab-section {
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .summary-cards {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .chart-container {
    height: 280px;
  }

  .auth-card {
    padding: 2.5rem 1.75rem;
  }
}