/* ================================
   PING ME - MODERN THEME
   Inspired by: Canva, Instagram, Apple Music
   ================================ */

:root {
  /* Modern Color Palette */
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-secondary: #ec4899;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #06b6d4;
  
  /* Gradient Colors */
  --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-pink: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-orange: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-green: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
  --gradient-sunset: linear-gradient(135deg, #ff6b6b 0%, #ffd93d 50%, #6bcf7f 100%);
  --gradient-instagram: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-colored: 0 10px 30px -5px rgba(99, 102, 241, 0.3);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================
   BASE STYLES
   ================================ */

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

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: linear-gradient(to bottom, #f9fafb 0%, #ffffff 100%);
  color: var(--color-gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

/* ================================
   NAVBAR - Glassmorphism Style
   ================================ */

.navbar {
  background: rgba(255, 255, 255, 0.9) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
  padding: 1rem 0 !important;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar-brand {
  font-weight: 800;
  font-size: 1.5rem;
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-700) !important;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary) !important;
  background: var(--color-gray-50);
  transform: translateY(-2px);
}

.nav-link i {
  margin-right: 0.5rem;
}

/* ================================
   CARDS - Modern Elevated Design
   ================================ */

.card {
  background: var(--color-white);
  border: none;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-purple);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1; /* Move behind card content */
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  background: var(--gradient-purple);
  color: var(--color-white);
  border: none;
  padding: 1.5rem;
  font-weight: 600;
  border-radius: 0 !important; /* Remove border-radius so it fills container */
  margin: 0;
  position: relative;
  z-index: 0;
}

.card-header.bg-success {
  background: var(--gradient-green) !important;
}

.card-header.bg-info {
  background: var(--gradient-blue) !important;
}

.card-header.bg-warning {
  background: var(--gradient-orange) !important;
}

.card-body {
  padding: 2rem;
}

/* For cards with only body (no header) */
.card > .card-body:first-child {
  border-radius: var(--radius-2xl);
}

/* For cards with header - ensure body doesn't have top radius */
.card-header + .card-body {
  border-radius: 0;
}

/* ================================
   BUTTONS - Modern with Gradients
   ================================ */

.btn {
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-xl);
  border: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.btn:active {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--gradient-purple);
  color: var(--color-white);
}

.btn-success {
  background: var(--gradient-green);
  color: var(--color-white);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: var(--color-white);
}

.btn-info {
  background: var(--gradient-blue);
  color: var(--color-white);
}

.btn-warning {
  background: var(--gradient-orange);
  color: var(--color-white);
}

.btn-outline-primary {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--gradient-purple);
  color: var(--color-white);
  border-color: transparent;
}

.btn-outline-secondary {
  border: 2px solid var(--color-gray-300);
  color: var(--color-gray-700);
  background: transparent;
}

.btn-outline-secondary:hover {
  background: var(--color-gray-100);
  border-color: var(--color-gray-400);
}

/* ================================
   FORM ELEMENTS - Modern Inputs
   ================================ */

.form-control, .form-select {
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
  transition: all var(--transition-base);
  background: var(--color-white);
  font-size: 1rem;
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
  outline: none;
  background: var(--color-white);
}

.form-label {
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: 0.5rem;
}

.form-check-input:checked {
  background: var(--gradient-purple);
  border-color: var(--color-primary);
}

.form-check-input:checked {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
}

/* Form switch (toggle) styles */
.form-check-input[type="checkbox"] {
  cursor: pointer;
}

.form-switch .form-check-input {
  width: 2.5em; /* Reduced from 3em */
  height: 1.25em; /* Reduced from 1.5em */
  background-color: #dee2e6;
  border: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: left center;
  background-size: contain;
  transition: background-position 0.15s ease-in-out, background-color 0.15s ease-in-out;
  margin-top: 0.125em; /* Add slight top margin for better alignment */
}

.form-switch .form-check-input:checked {
  background-color: #6366f1 !important;
  border-color: #6366f1 !important;
  background-position: right center;
}

.form-switch .form-check-input:focus {
  box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
  outline: none;
}

/* ================================
   BADGES & TAGS - Colorful Pills
   ================================ */

.badge {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.025em;
}

.badge.bg-primary {
  background: var(--gradient-purple) !important;
}

.badge.bg-success {
  background: var(--gradient-green) !important;
}

.badge.bg-info {
  background: var(--gradient-blue) !important;
}

.badge.bg-secondary {
  background: linear-gradient(135deg, #a78bfa 0%, #c084fc 100%) !important;
}

/* ================================
   ALERTS - Modern Notifications
   ================================ */

.alert {
  border: none;
  border-radius: var(--radius-xl);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-md);
  border-left: 4px solid;
}

.alert-success {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border-left-color: var(--color-success);
  color: #065f46;
}

.alert-danger {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  border-left-color: var(--color-danger);
  color: #991b1b;
}

.alert-info {
  background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
  border-left-color: var(--color-info);
  color: #155e75;
}

.alert-warning {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-left-color: var(--color-warning);
  color: #92400e;
}

/* ================================
   CUSTOM COMPONENTS
   ================================ */

.friend-card, .group-card, .beacon-item, .ping-card, .member-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.friend-card::before, .group-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-purple);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.friend-card:hover, .group-card:hover, .beacon-item:hover, .ping-card:hover, .member-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
  border-color: var(--color-primary-light);
}

.friend-card:hover::before, .group-card:hover::before {
  transform: scaleY(1);
}

/* ================================
   MAP PLACEHOLDER - Instagram Gradient
   ================================ */

#map {
  background: var(--gradient-instagram) !important;
  border-radius: var(--radius-2xl);
  position: relative;
  overflow: hidden;
}

#map::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: pulse 3s ease-in-out infinite;
}

/* ================================
   ANIMATIONS
   ================================ */

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.slide-in {
  animation: slideIn 0.5s ease-out;
}

/* Loading Spinner */
.spinner-modern {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ================================
   MODAL - Modern Overlay
   ================================ */

.modal-content {
  border: none;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
}

.modal-header {
  background: var(--gradient-purple);
  color: var(--color-white);
  border: none;
  padding: 1.5rem;
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  border: none;
  padding: 1.5rem 2rem;
  background: var(--color-gray-50);
}

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

.footer {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-gray-200);
  padding: 2rem 0;
  margin-top: 4rem;
}

/* ================================
   UTILITIES
   ================================ */

.shadow-colored {
  box-shadow: var(--shadow-colored) !important;
}

.gradient-text {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-effect {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ================================
   PWA INSTALL BANNER
   ================================ */

.pwa-install-banner {
  position: fixed;
  bottom: -100px;
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-2xl);
  padding: 1rem;
  z-index: 1050;
  transition: bottom var(--transition-base);
  border-top: 3px solid var(--color-primary);
}

.pwa-install-banner.show {
  bottom: 0;
}

.pwa-banner-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.pwa-banner-icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.pwa-banner-text {
  flex: 1;
}

.pwa-banner-text strong {
  display: block;
  font-size: 1rem;
  color: var(--color-gray-800);
  margin-bottom: 0.25rem;
}

.pwa-banner-text p {
  color: var(--color-gray-600);
  font-size: 0.875rem;
}

.pwa-banner-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* PWA Update Notification */
.pwa-update-notification {
  position: fixed;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-white);
  box-shadow: var(--shadow-2xl);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-xl);
  z-index: 1050;
  transition: top var(--transition-base);
  min-width: 300px;
  max-width: 500px;
  border: 2px solid var(--color-primary);
}

.pwa-update-notification.show {
  top: 20px;
}

.pwa-update-content {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pwa-update-content i {
  color: var(--color-primary);
}

/* Mobile PWA Banner Adjustments */
@media (max-width: 576px) {
  .pwa-banner-content {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
  
  .pwa-banner-actions {
    width: 100%;
  }
  
  .pwa-banner-actions .btn {
    flex: 1;
  }
  
  .pwa-update-notification {
    left: 1rem;
    right: 1rem;
    transform: none;
    min-width: auto;
  }
}

/* User location marker with avatar */
.user-location-marker {
  background: transparent !important;
  border: none !important;
}

.user-avatar-marker {
  position: relative;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-avatar-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
  border: 3px solid white;
  z-index: 2;
  position: relative;
  background-clip: padding-box; /* Prevent transparency issues */
}

/* For avatar images */
.user-avatar-circle img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.user-location-pulse {
  position: absolute;
  top: 0;
  left: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(102, 126, 234, 0.3);
  animation: pulse-animation 2s ease-out infinite;
  z-index: 1;
}

/* Small mobile devices */
@media (max-width: 576px) {
  .card {
    overflow: hidden; /* Ensure clipping */
    margin-bottom: 1rem !important; /* Ensure all cards have bottom margin */
  }
  
  /* First card on mobile needs extra spacing */
  .card:first-of-type,
  .row > .col:first-child .card,
  .row > .col-md-8:first-child .card,
  .row > .col-md-9:first-child .card {
    margin-bottom: 1.5rem !important;
  }
  
  .card-body {
    padding: 0.875rem;
  }
  
  .card-header {
    padding: 0.875rem;
    font-size: 0.9375rem;
    border-radius: 0 !important; /* No radius - fill to edges */
    margin: 0;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
  }
  
  .btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
  }
  
  /* Stack buttons vertically on very small screens */
  .hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }
  
  .hero-buttons .btn {
    width: 100%;
    max-width: 250px;
  }
  
  /* Improve form spacing on mobile */
  .form-control, .form-select {
    font-size: 1rem; /* Prevents zoom on iOS */
  }
  
  /* Better beacon card spacing */
  .beacon-card {
    padding: 0.875rem !important;
    margin-bottom: 0.75rem !important;
  }
  
  /* Adjust icon sizes */
  .stat-icon {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  /* Map loading overlay text size */
  #map-loading p {
    font-size: 0.875rem;
  }
  
  /* Dashboard map bottom margin on mobile */
  #dashboard-map {
    margin-bottom: 1rem;
  }
  
  /* Add margin to map cards on mobile */
  .card:has(#dashboard-map) {
    margin-bottom: 1.5rem !important;
  }
}

/* Tablet devices */
@media (max-width: 768px) {
  .card {
    border-radius: var(--radius-xl);
    margin-bottom: 1rem !important; /* Ensure bottom margin on all cards */
    overflow: hidden; /* Ensure clipping on mobile */
  }
  
  /* First card needs extra spacing */
  .card:first-of-type {
    margin-bottom: 1.5rem !important;
  }
  
  .card-header {
    padding: 1rem;
    border-radius: 0 !important; /* No radius - fill to edges */
    margin: 0;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .card > .card-body:first-child {
    border-radius: var(--radius-xl);
  }
  
  .navbar-brand {
    font-size: 1.25rem;
  }
  
  #map, #dashboard-map {
    height: 350px !important;
  }
  
  /* Adjust button sizes on mobile - restored to reasonable sizes */
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
  
  .btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
  
  .btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
  }
  
  /* Fix button wrapping on mobile */
  .d-grid.gap-2 {
    gap: 0.75rem !important;
  }
  
  /* Better spacing for alerts on mobile */
  .alert {
    padding: 1rem;
    font-size: 0.875rem;
  }
  
  /* Stat cards responsive spacing */
  .stat-card {
    margin-bottom: 1rem;
    padding: 1.25rem;
  }
  
  /* Modal improvements on mobile */
  .modal-body {
    padding: 1.25rem;
  }
  
  .modal-header {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0 !important;
  }
  
  .modal-footer {
    padding: 1rem 1.25rem;
  }
}