/* core.css - shared variables and base utilities across pages */

:root {
  /* Brand palette - merged from styles.css and previous core */
  --color-primary: #0061ff;
  --color-primary-dark: #004acc;
  --color-primary-light: rgba(0, 97, 255, 0.1);
  --color-secondary: #60efff;
  --color-secondary-dark: #00c6ff;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-danger-dark: #bb2d3b;
  --color-text: #333333;
  --color-text-light: #6c757d;
  --color-bg-light: #f8f9fa;
  --color-white: #ffffff;
  --color-dark: #212529;
  
  /* Legacy tokens for backward compatibility (map to new palette) */
  --primary-color: var(--color-primary);
  --primary-dark: var(--color-primary-dark);
  --success-color: var(--color-success);
  --success-dark: #27ae60;
  --warning-color: var(--color-warning);
  --warning-dark: #e67e22;
  --danger-color: var(--color-danger);
  --danger-dark: var(--color-danger-dark);
  --dark-color: var(--color-dark);
  --light-color: var(--color-bg-light);
  --gray-color: var(--color-text-light);
  --accent-lampung: #16a085;
  --accent-lampung-dark: #1abc9c;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --font-decorative: 'Dancing Script', cursive;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 5px 15px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
  --shadow: var(--shadow-md);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 50px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition: var(--transition-normal);
}

/* Utilities */
.status-badge { display:inline-block; font-size:.75rem; font-weight:600; padding:.35rem .65rem; border-radius:50px; }
.status-normal { background-color: var(--success-color); color:#fff; }
.status-warning { background-color: var(--warning-color); color:#212529; }
.status-danger { background-color: var(--danger-color); color:#fff; }

.alert-banner { padding: 12px 16px; border-radius: 8px; display:flex; align-items:center; gap:12px; border-left:5px solid; box-shadow: var(--shadow); }
.alert-banner.info { background: rgba(52,152,219,.12); border-left-color: var(--primary-color); color:#0c5460; }
.alert-banner.warning { background: rgba(243,156,18,.12); border-left-color: var(--warning-color); color:#856404; }
.alert-banner.danger { background: rgba(231,76,60,.12); border-left-color: var(--danger-color); color:#721c24; }

.last-update { position: sticky; top: 0; z-index: 1020; background: #fff; border-bottom: 1px solid #eee; padding: 6px 12px; display:flex; align-items:center; gap:8px; }
.distance-badge { display:inline-block; padding:3px 8px; border-radius:10px; font-size:.75rem; font-weight:600; background-color: var(--accent-lampung); color:#fff; }

/* Generic cards */
.card { border: none; border-radius: 10px; box-shadow: var(--shadow); }
.card-header { border-bottom: 1px solid rgba(0,0,0,0.06); background-color: #fff; }

/* Buttons (non-invasive, rely on Bootstrap; add only custom variant) */
.btn-lampung { background-color: var(--accent-lampung); color:#fff; border:none; }
.btn-lampung:hover { background-color: var(--accent-lampung-dark); color:#fff; }

/* Loading */
.loading { display:flex; justify-content:center; align-items:center; padding: 30px; flex-direction:column; gap:12px; color: var(--gray-color); text-align:center; }
.spinner { width:40px; height:40px; border:4px solid rgba(0,0,0,0.1); border-radius:50%; border-top-color: var(--primary-color); animation: core-spin 1s ease-in-out infinite; }
@keyframes core-spin { to { transform: rotate(360deg); } }

/* Tables */
.table-sticky thead th { position: sticky; top: 0; z-index: 10; background: #fff; }

/* ========================================================================
   NAVBAR STYLES
   ======================================================================== */

.navbar-container { position: sticky; top: 0; z-index: 1030; }

.tsunami-navbar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 1rem 0;
  box-shadow: 0 4px 20px rgba(0, 97, 255, 0.3);
  transition: all var(--transition-normal);
}

.tsunami-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.5rem;
  transition: all var(--transition-fast);
}

.tsunami-navbar .navbar-brand:hover {
  color: var(--color-secondary);
  transform: scale(1.05);
}

.tsunami-navbar .brand-logo {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.tsunami-navbar .nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.tsunami-navbar .nav-link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.tsunami-navbar .nav-link.active {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.25);
  font-weight: 600;
}

.tsunami-navbar .nav-link i {
  margin-right: 6px;
  transition: transform var(--transition-fast);
}

.tsunami-navbar .nav-link:hover i {
  transform: scale(1.2);
}

.tsunami-navbar .system-status {
  margin-left: 1.5rem;
}

.tsunami-navbar .status-badge {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.tsunami-navbar .status-badge.bg-success {
  background: var(--color-success) !important;
}

.tsunami-navbar .status-badge.bg-danger {
  background: var(--color-danger) !important;
}

.tsunami-navbar .status-icon {
  display: inline-flex;
  align-items: center;
}

.tsunami-navbar .status-icon.pulse {
  animation: pulse-status 2s ease-in-out infinite;
}

@keyframes pulse-status {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Mobile navbar toggle */
.navbar-toggler {
  border: none;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.25);
  outline: none;
}

.navbar-toggler-icon-custom {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-white);
  position: relative;
  transition: all var(--transition-fast);
}

.navbar-toggler-icon-custom::before,
.navbar-toggler-icon-custom::after {
  content: '';
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-white);
  position: absolute;
  transition: all var(--transition-fast);
}

.navbar-toggler-icon-custom::before { top: -8px; }
.navbar-toggler-icon-custom::after { bottom: -8px; }

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom {
  background: transparent;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::before {
  transform: rotate(45deg);
  top: 0;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::after {
  transform: rotate(-45deg);
  bottom: 0;
}

.navbar-spacer {
  height: 0;
}

/* ========================================================================
   FOOTER STYLES
   ======================================================================== */

.tsunami-footer {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: var(--color-white);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.tsunami-footer .footer-heading {
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.tsunami-footer .footer-heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 3px;
  background: var(--color-secondary);
  border-radius: 2px;
}

.tsunami-footer .footer-about-text {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  font-size: 0.95rem;
}

.tsunami-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tsunami-footer .footer-links li {
  margin-bottom: 0.75rem;
}

.tsunami-footer .footer-link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tsunami-footer .footer-link::before {
  content: '→';
  transition: transform var(--transition-fast);
}

.tsunami-footer .footer-link:hover {
  color: var(--color-secondary);
  padding-left: 8px;
}

.tsunami-footer .footer-link:hover::before {
  transform: translateX(4px);
}

.tsunami-footer .footer-contact-info {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tsunami-footer .footer-contact-info li {
  display: flex;
  align-items: start;
  gap: 12px;
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.8);
}

.tsunami-footer .contact-icon {
  color: var(--color-secondary);
  margin-top: 3px;
  font-size: 1rem;
}

.tsunami-footer .footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: 2rem 0 1.5rem;
}

.tsunami-footer .footer-bottom {
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tsunami-footer .copyright-text,
.tsunami-footer .version-text {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin: 0;
}

/* Responsive adjustments */
@media (max-width: 991.98px) {
  .tsunami-navbar .navbar-collapse {
    background: linear-gradient(135deg, rgba(0, 61, 165, 0.98) 0%, rgba(0, 76, 204, 0.98) 100%);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
    box-shadow: var(--shadow-lg);
  }
  
  .tsunami-navbar .nav-link {
    padding: 0.75rem 1rem;
    margin: 0.25rem 0;
    border-radius: var(--radius-md);
  }
  
  .tsunami-navbar .system-status {
    margin-left: 0;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }
  
  .tsunami-footer {
    text-align: center;
  }
  
  .tsunami-footer .footer-heading::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Footer minimal - keep for backward compatibility */
.main-footer { background-color: var(--dark-color); color:#fff; padding: 20px 0; }
.main-footer .footer-bottom { text-align:center; font-size:.9rem; color: rgba(255,255,255,0.75); }