/* ==========================================================================
   MINEGUARD AI — APPLICATION SHELL & RESPONSIVE LAYOUT
   Mobile-First • Multi-Screen Adaptive (Mobile, Tablet, Desktop Cockpit)
   ========================================================================== */

/* Modular View Stylesheets */
@import url('views/overview.css');
@import url('views/flood.css');
@import url('views/heat.css');
@import url('views/forecast.css');
@import url('views/map.css');
@import url('views/alerts.css');
@import url('views/recommendations.css');
@import url('views/esg.css');

/* ─── 1. ROOT APP WRAPPER ─────────────────────────────────────────────────── */
#app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: radial-gradient(circle at 50% 0%, #0d1a33 0%, var(--bg-deep) 65%);
}

/* ─── 2. TOP COMMAND HEADER ───────────────────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(7, 13, 24, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo-img {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 229, 255, 0.35);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
  object-fit: cover;
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 30%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--copper-gold);
  text-transform: uppercase;
  display: none;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.site-selector {
  background: var(--bg-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  max-width: 140px;
}

.site-selector:focus {
  border-color: var(--cyan);
}

.threat-indicator-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* ─── 3. MAIN WORKSPACE BODY ──────────────────────────────────────────────── */
.app-body {
  display: flex;
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* Sidebar Navigation (Hidden on Mobile, Drawer on Tablet, Fixed on Desktop) */
.app-sidebar {
  display: none;
}

/* Main Content Outlet */
.app-main {
  flex: 1;
  padding: 1rem;
  padding-bottom: 84px; /* clearance for bottom nav on mobile */
  overflow-y: auto;
  max-width: 100%;
}

/* ─── 4. MOBILE BOTTOM NAVIGATION (< 640px) ───────────────────────────────── */
.mobile-nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(7, 13, 24, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
  padding: 0 0.25rem;
}

.nav-item-mobile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  color: var(--text-faint);
  text-decoration: none;
  font-size: 0.68rem;
  font-weight: 500;
  min-width: 48px;
  min-height: 48px;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-item-mobile.active {
  color: var(--cyan);
}

.nav-item-mobile.active svg {
  color: var(--cyan);
  filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.5));
}

/* ─── 5. TABLET ADAPTATIONS (min-width: 640px) ────────────────────────────── */
@media (min-width: 640px) {
  .app-header {
    padding: 0 1.5rem;
  }
  
  .brand-tagline {
    display: block;
  }

  .site-selector {
    max-width: 220px;
    font-size: 0.85rem;
  }

  .app-main {
    padding: 1.5rem;
    padding-bottom: 88px;
  }
}

/* ─── 6. DESKTOP COCKPIT LAYOUT (min-width: 1024px) ───────────────────────── */
@media (min-width: 1024px) {
  .mobile-nav-bar {
    display: none;
  }

  .app-sidebar {
    display: flex;
    flex-direction: column;
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    padding: 1.25rem 0.75rem;
    gap: 0.5rem;
    flex-shrink: 0;
  }

  .sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    padding: 0.5rem 0.75rem 0.25rem;
  }

  .nav-item-desktop {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
  }

  .nav-item-desktop:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
  }

  .nav-item-desktop.active {
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.15) 0%, rgba(0, 229, 255, 0.02) 100%);
    color: var(--cyan);
    border-left: 3px solid var(--cyan);
  }

  .app-main {
    padding: 2rem;
    padding-bottom: 2rem;
  }
}

/* ─── 7. MODAL / DRAWER SYSTEM ────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.8);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-content {
  transform: translateY(0);
}