/**
 * Ztime - Custom CSS Overrides
 * Mobile-first CSS Grid layout with Bootstrap components
 */

/* ============================================
   CSS Variables
   ============================================ */

:root {
  --clock-font-size: clamp(2.5rem, 10vw, 5rem);
  --clock-font-weight: 700;
  --clock-letter-spacing: -0.02em;
  --transition-speed: 0.2s;
  --ad-sidebar-width: 280px;
  --ad-sidebar-gap: 24px;
}

/* ============================================
   Base Styles
   ============================================ */

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Light mode background */
body:not([data-bs-theme="dark"]) {
  background: radial-gradient(circle at center, #f8f9fa 0%, #e9ecef 100%);
}

/* Dark mode background */
[data-bs-theme="dark"] body {
  background: radial-gradient(circle at center, #1a1a2e 0%, #16213e 100%);
  color: #e9ecef;
}

/* ============================================
   CSS Grid Layout
   ============================================ */

/* Mobile-first: single column layout */
.page-grid {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.main-content {
  flex: 1;
}

/* Ad sidebars hidden on mobile by default (using Bootstrap d-none d-lg-block) */
.ad-sidebar-left,
.ad-sidebar-right {
  display: none;
}

/* Desktop: 3-column grid with side ads */
@media (min-width: 992px) {
  .page-grid {
    display: grid;
    grid-template-columns: var(--ad-sidebar-width) 1fr var(--ad-sidebar-width);
    grid-template-areas: "ad-left main ad-right";
    gap: var(--ad-sidebar-gap);
    padding: 0 var(--ad-sidebar-gap);
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
  }
  
  .ad-sidebar-left {
    display: block;
    grid-area: ad-left;
    position: sticky;
    top: 20px;
    height: calc(100vh - 140px);
    max-height: 800px;
    align-self: start;
  }
  
  .ad-sidebar-right {
    display: block;
    grid-area: ad-right;
    position: sticky;
    top: 20px;
    height: calc(100vh - 140px);
    max-height: 800px;
    align-self: start;
  }
  
  .main-content {
    grid-area: main;
    min-width: 0; /* Prevent grid blowout */
  }
}

/* Extra large screens: wider sidebars */
@media (min-width: 1400px) {
  :root {
    --ad-sidebar-width: 320px;
  }
}

/* ============================================
   Typography
   ============================================ */

.clock-font {
  font-size: var(--clock-font-size);
  font-weight: var(--clock-font-weight);
  letter-spacing: var(--clock-letter-spacing);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.letter-spacing {
  letter-spacing: 0.1em;
}

/* ============================================
   Ad Placeholders
   ============================================ */

.ad-placeholder {
  background: linear-gradient(135deg, var(--bs-light, #f8f9fa) 0%, var(--bs-gray-200, #e9ecef) 100%);
  border: 2px dashed var(--bs-gray-400, #ced4da);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

[data-bs-theme="dark"] .ad-placeholder {
  background: linear-gradient(135deg, #2d333b 0%, #212529 100%);
  border-color: var(--bs-gray-600, #6c757d);
}

/* Mobile ad */
.ad-mobile {
  min-height: 90px;
}

/* ============================================
   Quick Info Section
   ============================================ */

.quick-info {
  display: flex;
  gap: 0.75rem;
  padding: 0.5rem;
  /* Mobile portrait: horizontal scroll, centered */
  overflow-x: auto;
  flex-wrap: nowrap;
  justify-content: center;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE 10+ */
}

.quick-info::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.quick-info-card {
  flex: 0 0 auto;
  width: 100px;
  text-align: center;
  padding: 0.75rem 0.25rem;
  border-radius: 0.5rem;
  transition: transform 0.2s ease;
}

.quick-info-card:hover {
  transform: translateY(-4px);
}

.quick-info-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.quick-info-title {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  line-height: 1.2;
}

.quick-info-desc {
  font-size: 0.7rem;
  color: var(--bs-secondary, #6c757d);
  margin-bottom: 0;
  line-height: 1.3;
}

[data-bs-theme="dark"] .quick-info-card {
  background-color: transparent;
}

[data-bs-theme="dark"] .quick-info-desc {
  color: var(--bs-gray-400, #adb5bd);
}

/* Mobile landscape: center with no scroll if they fit, add bottom margin for footer spacing */
@media (min-width: 480px) and (max-width: 991px) {
  .quick-info {
    justify-content: center;
    flex-wrap: wrap;
    overflow-x: visible;
    margin-bottom: 2rem;
  }
  
  .quick-info-card {
    width: 130px;
    padding: 1rem 0.5rem;
  }
  
  .quick-info-icon {
    font-size: 2.25rem;
  }
  
  .quick-info-title {
    font-size: 0.9rem;
  }
  
  .quick-info-desc {
    font-size: 0.8rem;
  }
}

/* Tablet: larger cards */
@media (min-width: 768px) and (max-width: 991px) {
  .quick-info-card {
    width: 160px;
  }
  
  .quick-info-icon {
    font-size: 2.5rem;
  }
}

/* Desktop: no scroll, center items, full size cards */
@media (min-width: 992px) {
  .quick-info {
    overflow-x: visible;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
  }
  
  .quick-info-card {
    width: 220px;
    padding: 1.5rem 1rem;
  }
  
  .quick-info-icon {
    font-size: 3.5rem;
  }
  
  .quick-info-title {
    font-size: 1.1rem;
  }
  
  .quick-info-desc {
    font-size: 0.9rem;
  }
}

/* ============================================
   Mobile Responsive
   ============================================ */

@media (max-width: 575.98px) {
  :root {
    --clock-font-size: 2.5rem;
  }
  
  .display-1 {
    font-size: 2.5rem;
  }
  
  /* Ensure touch targets are at least 44px */
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
}

@media (min-width: 576px) {
  :root {
    --clock-font-size: 3.5rem;
  }
}

@media (min-width: 1200px) {
  :root {
    --clock-font-size: 4.5rem;
  }
}

/* ============================================
   Dark Mode Enhancements
   ============================================ */

[data-bs-theme="dark"] {
  color-scheme: dark;
}

[data-bs-theme="dark"] .card {
  background-color: #343a40;
  border-color: var(--bs-gray-700);
}

[data-bs-theme="dark"] .text-muted {
  color: var(--bs-gray-400) !important;
}

[data-bs-theme="dark"] .badge {
  color: #fff;
}

[data-bs-theme="dark"] .alert-info {
  background-color: #0c5460;
  border-color: #117a8b;
  color: #d1ecf1;
}

/* Smooth transitions */
body {
  transition: background-color var(--transition-speed) ease, 
              color var(--transition-speed) ease;
}

.card {
  transition: background-color var(--transition-speed) ease,
              border-color var(--transition-speed) ease;
}

/* ============================================
   Accessibility
   ============================================ */

*:focus-visible {
  outline: 3px solid var(--bs-primary, #0d6efd);
  outline-offset: 2px;
}

.visually-hidden-focusable:not(:focus):not(:focus-within) {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.visually-hidden-focusable:focus {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 9999;
  background: var(--bs-primary);
  color: white;
  padding: 0.5rem 1rem;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .clock-font {
    font-weight: 900;
  }
  
  .btn-outline-secondary {
    border-width: 2px;
  }
  
  .card {
    border-width: 2px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   Status Dot
   ============================================ */

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-online {
  background-color: var(--bs-success, #198754);
  box-shadow: 0 0 0 2px rgba(25, 135, 84, 0.3);
  animation: pulse-dot 2s ease-in-out infinite;
}

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

.status-offline {
  background-color: var(--bs-secondary, #6c757d);
}

/* ============================================
   DST Indicator
   ============================================ */

#dst-indicator .badge {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

@media (prefers-reduced-motion: reduce) {
  #dst-indicator .badge,
  .status-online {
    animation: none;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  header,
  footer,
  .ad-sidebar-left,
  .ad-sidebar-right,
  .ad-mobile,
  #theme-toggle,
  #sync-warning {
    display: none !important;
  }
  
  .clock-font {
    font-size: 3rem;
    color: black !important;
  }
}

/* ============================================
   City Selector & Cards
   ============================================ */

.city-selector {
  margin-top: 2rem;
}

.city-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.city-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.city-clock {
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.city-card .card-body {
  position: relative;
}

.city-card .btn-outline-danger {
  font-size: 1.25rem;
  line-height: 1;
  min-width: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.city-card .btn-outline-danger:hover {
  background-color: var(--bs-danger);
  color: white;
}

/* Touch-friendly select on mobile */
#city-select {
  min-height: 48px;
  font-size: 1rem;
}

#city-select option {
  padding: 8px;
  font-size: 1rem;
  min-height: 32px;
}

/* Dark mode city cards */
[data-bs-theme="dark"] .city-card {
  background-color: #343a40;
  border-color: var(--bs-gray-700);
}

[data-bs-theme="dark"] .city-card .h6 {
  color: #e9ecef;
}

/* Ad Banner (below cities) */
.ad-banner {
  margin: 0 auto;
  max-width: 728px;
  width: 100%;
}

.ad-banner .ad-placeholder {
  min-height: 90px;
  padding: 1rem;
}

/* Sidebar ads styling */
.ad-sidebar-left,
.ad-sidebar-right {
  display: none;
}

@media (min-width: 992px) {
  .ad-sidebar-left,
  .ad-sidebar-right {
    display: block;
  }
}

/* ============================================
   City Cards - Compact Layout
   ============================================ */

.city-card {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: grab;
}

.city-card:hover {
  box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1) !important;
}

.city-card .card-body {
  padding: 0.5rem 0.75rem;
}

/* Drag handle */
.drag-handle {
  cursor: grab;
  font-size: 0.75rem;
  opacity: 0.4;
  user-select: none;
}

.drag-handle:hover {
  opacity: 0.7;
}

/* Dragging state */
.dragging .city-card {
  opacity: 0.5;
  cursor: grabbing;
}

/* Row layouts */
.city-row-top {
  min-height: 1.5rem;
}

.city-row-bottom {
  min-height: 1.5rem;
}

/* City name and country */
.city-name {
  font-size: 0.95rem;
  line-height: 1.2;
}

.city-country {
  font-size: 0.75rem;
  max-width: 80px;
}

/* Time display */
.city-clock {
  font-size: 1.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.city-date {
  font-size: 0.75rem;
}

/* Remove button */
.btn-remove {
  font-size: 1.25rem;
  line-height: 1;
  text-decoration: none !important;
  min-width: 24px;
  opacity: 0.6;
  transition: opacity 0.15s;
}

.btn-remove:hover {
  opacity: 1;
}

/* Badges */
.city-timezone {
  font-size: 0.7rem;
  padding: 0.15em 0.4em;
}

.city-status {
  font-size: 0.65rem;
  padding: 0.1em 0.3em;
}

/* Touch-friendly select in header */
#city-select {
  min-height: 36px;
}

#city-select option {
  padding: 6px;
}

/* Mobile optimizations */
@media (max-width: 575px) {
  .city-card .card-body {
    padding: 0.375rem 0.5rem;
  }
  
  .city-name {
    font-size: 0.875rem;
    max-width: 120px;
  }
  
  .city-country {
    font-size: 0.7rem;
    max-width: 60px;
  }
  
  .city-clock {
    font-size: 1rem;
  }
  
  .city-date {
    font-size: 0.7rem;
  }
}

/* Desktop - slightly larger */
@media (min-width: 992px) {
  .city-clock {
    font-size: 1.25rem;
  }
  
  .city-name {
    font-size: 1rem;
  }
}

/* Dark mode */
[data-bs-theme="dark"] .city-card {
  background-color: #343a40;
  border-color: var(--bs-gray-700);
}

[data-bs-theme="dark"] .city-name {
  color: #e9ecef;
}

[data-bs-theme="dark"] .drag-handle {
  color: #adb5bd;
}

/* Cities section spacing */
#cities-section {
  margin-bottom: 1.5rem;
}

#cities-grid {
  margin-bottom: 1rem;
}

#cities-grid > div {
  padding: 0 0.375rem;
}

#cities-grid .row {
  margin: 0 -0.375rem;
}

/* ============================================
   City Cards - Responsive Layout
   ============================================ */

.city-card {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: grab;
}

.city-card:hover {
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.15) !important;
}

.city-card .card-body {
  display: flex;
  flex-direction: column;
  padding: 0.75rem;
}

/* Drag handle */
.drag-handle {
  cursor: grab;
  font-size: 0.875rem;
  opacity: 0.3;
  user-select: none;
  line-height: 1;
}

.drag-handle:hover {
  opacity: 0.6;
}

/* Dragging state */
.dragging .city-card {
  opacity: 0.6;
  cursor: grabbing;
}

/* City name and country */
.city-name {
  font-size: 0.9rem;
  line-height: 1.2;
}

.city-country {
  font-size: 0.75rem;
}

/* Time display - MOBILE PORTRAIT (2-col) */
.city-clock {
  font-size: 1.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  text-align: center;
}

.city-date {
  font-size: 0.7rem;
}

.city-timezone {
  font-size: 0.75rem;
  padding: 0.25em 0.5em;
}

.city-status {
  font-size: 0.65rem;
  padding: 0.2em 0.4em;
}

/* Remove button */
.btn-remove {
  font-size: 1.5rem;
  line-height: 0.8;
  text-decoration: none !important;
  opacity: 0.5;
  transition: opacity 0.15s;
  min-width: 24px;
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-remove:hover {
  opacity: 1;
}

/* Min width utility for text truncation */
.min-width-0 {
  min-width: 0;
}

/* ============================================
   Mobile Portrait: 2 columns
   ============================================ */
@media (max-width: 767px) {
  #cities-grid > div {
    padding: 0.25rem;
  }
  
  .city-card .card-body {
    padding: 0.625rem 0.5rem;
  }
  
  .city-name {
    font-size: 0.85rem;
  }
  
  .city-country {
    font-size: 0.7rem;
  }
  
  /* Make time LARGER and most prominent on mobile */
  .city-clock {
    font-size: 1.5rem;
    margin-bottom: 0.375rem;
    margin-top: 0.25rem;
  }
  
  .city-date {
    font-size: 0.7rem;
  }
  
  .city-timezone {
    font-size: 0.7rem;
    padding: 0.2em 0.4em;
  }
  
  .drag-handle {
    font-size: 0.75rem;
  }
  
  .btn-remove {
    font-size: 1.25rem;
    min-width: 20px;
    min-height: 20px;
  }
}

/* ============================================
   Mobile Landscape: 3 columns (Bootstrap lg starts at 992px, md at 768px)
   ============================================ */
@media (min-width: 768px) and (max-width: 991px) {
  /* Force 3 columns on tablet/landscape */
  #cities-grid .col-6 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
  }
  
  .city-card .card-body {
    padding: 0.875rem;
  }
  
  /* Larger time text in landscape */
  .city-clock {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
  }
  
  .city-name {
    font-size: 0.95rem;
  }
  
  .city-country {
    font-size: 0.8rem;
  }
  
  .city-name {
    font-size: 0.95rem;
  }
}

/* ============================================
   Desktop: 3 columns, larger
   ============================================ */
@media (min-width: 992px) {
  .city-card .card-body {
    padding: 1rem;
  }
  
  .city-clock {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
  }
  
  .city-name {
    font-size: 1rem;
  }
  
  .city-country {
    font-size: 0.8rem;
  }
  
  .city-date {
    font-size: 0.8rem;
  }
  
  .city-timezone {
    font-size: 0.85rem;
  }
}

/* ============================================
   Dark mode
   ============================================ */
[data-bs-theme="dark"] .city-card {
  background-color: #343a40;
  border-color: var(--bs-gray-700);
}

[data-bs-theme="dark"] .city-name {
  color: #e9ecef;
}

[data-bs-theme="dark"] .drag-handle {
  color: #adb5bd;
}

/* Cities section */
#cities-section {
  margin-bottom: 1.5rem;
}

#cities-grid {
  margin: 0 -0.25rem;
}

#cities-grid > div {
  margin-bottom: 0.5rem;
}