/* =========================================
   ANALYTICS PAGE STYLES
   ========================================= */

:root {
  /* Dark Mode Palette (Default) */
  --color-bg: #0f172a; /* slate-900 */
  --color-card: #1e293b; /* slate-800 */
  --color-text: #f8fafc; /* slate-50 */
  --color-text-muted: #94a3b8; /* slate-400 */
  --color-border: #334155; /* slate-700 */

  --color-primary: #0f807b; /* Teal */
  --color-accent: #38bdf8; /* Sky Blue */
  --color-danger: #ef4444; /* Red */
  --color-success: #4ade80; /* Green */
  --color-warning: #facc15; /* Yellow */

  --font-family: "Inter", system-ui, sans-serif;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Light Mode Override */
body.light-mode {
  --color-bg: #f8fafc; /* slate-50 */
  --color-card: #ffffff; /* white */
  --color-text: #1e293b; /* slate-800 */
  --color-text-muted: #64748b; /* slate-500 */
  --color-border: #e2e8f0; /* slate-200 */
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.brand-title {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-title a {
  text-decoration: none;
  font-size: 1.5rem;
}

.brand-title h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.last-updated {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-family: monospace;
}

.btn-icon {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-icon:hover {
  background-color: var(--color-border);
}

/* ============================
   CONTAINER & GRID
   ============================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
  box-sizing: border-box;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.kpi-card {
  background-color: var(--color-card);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.kpi-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
}

.text-white {
  color: var(--color-text);
}
.text-yellow {
  color: var(--color-warning);
}
.text-green {
  color: var(--color-success);
}
.text-blue {
  color: var(--color-accent);
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.chart-container {
  background-color: var(--color-card);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--color-border);
}

.chart-title {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.canvas-wrapper {
  position: relative;
  height: 300px;
  width: 100%;
}

/* ============================
   LOADING SCREEN
   ============================ */
#loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .nav-controls {
    width: 100%;
    justify-content: space-between;
  }

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