@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0b0f17;
  --bg-secondary: #131926;
  --bg-tertiary: rgba(26, 34, 51, 0.7);
  
  --glass-surface: rgba(22, 30, 46, 0.65);
  --glass-surface-hover: rgba(30, 42, 66, 0.8);
  --glass-surface-active: rgba(38, 54, 84, 0.9);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-specular: rgba(255, 255, 255, 0.16);
  --glass-blur: blur(28px) saturate(190%);
  
  --brand-primary: #006CB7;
  --brand-primary-light: #1e8ae0;
  --brand-primary-glow: rgba(0, 108, 183, 0.35);
  
  --accent-success: #10b981;
  --accent-success-glow: rgba(16, 185, 129, 0.3);
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-amber: #f59e0b;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.3);
  --shadow-liquid: 0 10px 35px -5px rgba(0, 0, 0, 0.45), 0 0 0 1px var(--glass-border);
  --shadow-glow: 0 0 25px var(--brand-primary-glow);
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 108, 183, 0.12), transparent 45%),
    radial-gradient(circle at 85% 90%, rgba(16, 185, 129, 0.08), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(19, 25, 38, 0.6), transparent 70%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Liquid Glass Cards */
.liquid-card {
  background: var(--glass-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-specular);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-liquid);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.liquid-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

/* Header & Navigation */
header.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 24px;
  background: rgba(11, 15, 23, 0.75);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo-img {
  height: 28px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(0, 108, 183, 0.4));
}

.apartment-switcher-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.apartment-switcher-btn:hover {
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-specular);
  transform: translateY(-1px);
}

/* Liquid Navigation Pill Bar */
.nav-pills-container {
  display: flex;
  align-items: center;
  background: rgba(19, 25, 38, 0.8);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  gap: 4px;
}

.nav-pill-btn {
  padding: 8px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-normal);
}

.nav-pill-btn:hover {
  color: var(--text-primary);
}

.nav-pill-btn.active {
  background: var(--brand-primary);
  color: #ffffff;
  box-shadow: 0 2px 12px var(--brand-primary-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
}

.user-avatar-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), #00a86b);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: #ffffff;
}

/* Main Container */
main.app-main {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Sections */
.view-section {
  display: none;
  flex-direction: column;
  gap: 24px;
  animation: fadeIn 0.3s ease forwards;
}

.view-section.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Gateway Hero Card */
.gateway-hero-card {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.gateway-info-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.status-pulse-badge.online {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.status-pulse-badge.offline {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 10px currentColor;
  animation: pulseAnimation 2s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(5, 8, 14, 0.75);
  backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease forwards;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  width: 100%;
  max-width: 520px;
  background: #131926;
  border: 1px solid var(--glass-border-specular);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: modalScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalScaleUp {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(11, 15, 23, 0.8);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-glow);
}

/* Buttons */
.btn-primary {
  padding: 12px 24px;
  background: var(--brand-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px var(--brand-primary-glow);
}

.btn-primary:hover {
  background: var(--brand-primary-light);
  transform: translateY(-1px);
}

.btn-secondary {
  padding: 12px 20px;
  background: var(--glass-surface);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-normal);
}

.btn-secondary:hover {
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-specular);
}

/* Floating Action Button (FAB) */
.fab-container {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 90;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-end;
  gap: 12px;
}

.fab-main-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #ffffff;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  box-shadow: 0 8px 25px var(--brand-primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-spring);
}

.fab-main-btn:hover {
  transform: scale(1.08) rotate(45deg);
}

.fab-menu {
  display: none;
  flex-direction: column;
  gap: 10px;
  animation: fadeIn 0.2s ease;
}

.fab-menu.active {
  display: flex;
}

.fab-action-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--glass-surface);
  backdrop-filter: var(--glass-blur);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-subtle);
}

.fab-action-item:hover {
  background: var(--glass-surface-hover);
  border-color: var(--brand-primary);
  transform: translateX(-4px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  header.app-header {
    flex-direction: column;
    gap: 12px;
    padding: 12px 16px;
  }
  .header-brand {
    width: 100%;
    justify-content: space-between;
  }
  .nav-pills-container {
    width: 100%;
    justify-content: space-around;
  }
  .nav-pill-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
  main.app-main {
    padding: 16px;
  }
}