/* ==========================================================================
   Design Tokens

   NOTE: Colors are also defined in colors.js for JavaScript usage.
   Keep these in sync: COLOR_START = --color-start, COLOR_END = --color-end

   2025 Color Palette inspired by Pantone & W3Schools 2025 trends:
   https://www.w3schools.com/Colors/colors_2025.asp
   ========================================================================== */

:root {
  /* Typography */
  --font-ui: system-ui, -apple-system, sans-serif;
  --font-editorial: "Playfair Display", Georgia, serif;

  /* Colors - synced with colors.js (2025 palette) */
  --paper: #F4F5F0;              /* Bright White */
  --ink: #343148;                /* Eclipse */
  --hairline: rgba(52, 49, 72, 0.15);
  --color-start: #2E5283;        /* Déja Vu Blue - COLOR_START in colors.js */
  --color-end: #DC343B;          /* Poppy Red - COLOR_END in colors.js */
  --color-start-light: rgba(46, 82, 131, 0.1);
  --hover-bg: rgba(52, 49, 72, 0.06);
  --hover-bg-strong: rgba(52, 49, 72, 0.1);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 10px 40px rgba(0, 0, 0, 0.2);

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* Z-index scale */
  --z-map: 1;
  --z-topbar: 100;
  --z-dropdown: 200;
  --z-autocomplete: 300;
  --z-modal: 400;
  --z-pac-container: 500;

  /* Layout */
  --topbar-height: auto;
  --topbar-min-height: 72px;
}


/* ==========================================================================
   Reset & Base
   ========================================================================== */

html,
body {
  height: 100%;
  margin: 0;
  font-family: var(--font-ui);
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
}


/* ==========================================================================
   Topbar
   ========================================================================== */

.topbar {
  min-height: var(--topbar-min-height);
  height: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  gap: var(--space-4);
  box-sizing: border-box;
  background: rgba(251, 251, 248, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--hairline);
  position: relative;
  z-index: var(--z-topbar);
  flex-shrink: 0;
}

.topbar h1 {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.1px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  cursor: pointer;
  position: relative;
}

.topbar h1::after {
  content: "Desire Path Mapper";
  position: absolute;
  left: 40px;
  top: 0;
  color: rgba(0, 0, 0, 0.2);
  transform-origin: 50% 100%;
  transform: rotateX(-72deg) translateX(calc(18% + 1px)) translateY(16px);
  filter: blur(1px);
  z-index: -1;
  transition: all 0.2s ease;
  pointer-events: none;
}

.topbar h1:hover::after {
  color: rgba(0, 0, 0, 0.32);
  filter: blur(1.5px);
  transform: rotateX(-67deg) translateX(calc(18% + 1px)) translateY(12px);
}

.logo-wrapper {
  position: relative;
  display: inline-flex;
}

.logo-icon {
  height: 36px;
  width: auto;
  display: block;
  position: relative;
  z-index: 1;
  transition: transform 0.2s ease;
}

.topbar h1:hover .logo-icon {
  transform: translateY(-3px);
}

.logo-icon-shadow {
  position: absolute;
  top: 1px;
  left: 1px;
  height: 36px;
  width: auto;
  filter: blur(2px) brightness(0) opacity(0.2);
  transform: scaleY(0.6) skewX(-8deg);
  transform-origin: bottom center;
  z-index: 0;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.topbar h1:hover .logo-icon-shadow {
  filter: blur(3px) brightness(0) opacity(0.35);
}

.header-divider {
  width: 1px;
  height: 40px;
  background: var(--hairline);
}


/* ==========================================================================
   Route Bar
   ========================================================================== */

.route-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
  justify-content: flex-start;
}

.route-fields {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
}

.route-field {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  flex-shrink: 0;
}

.route-field-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  opacity: 0.6;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.route-field-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.route-field:first-child .route-field-label::before {
  background: var(--color-start);
}

.route-field:last-child .route-field-label::before {
  background: var(--color-end);
}

.route-field-value {
  font-size: 13px;
  font-family: var(--font-ui);
  color: var(--ink);
  min-width: 135px;
  max-width: 155px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.route-field-value.empty {
  opacity: 0.4;
  font-style: italic;
}

.action-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}


/* ==========================================================================
   Mode Selector
   ========================================================================== */

.mode-selector {
  position: relative;
  z-index: var(--z-dropdown);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px var(--space-4);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s ease;
  height: 40px;
  box-sizing: border-box;
}

.mode-btn:hover {
  background: var(--hover-bg);
}

.mode-btn:active {
  background: var(--hover-bg-strong);
}

.mode-icon {
  font-size: 16px;
  line-height: 1;
}

.mode-label {
  font-weight: 500;
}

.mode-dropdown {
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  min-width: 100px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  overflow: hidden;
  z-index: var(--z-dropdown);
}

.mode-selector.active .mode-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mode-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s ease;
}

.mode-option:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.mode-option:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.mode-option:hover {
  background: var(--hover-bg);
}

.mode-option .check-icon {
  margin-left: auto;
  font-size: 11px;
  font-weight: 700;
  opacity: 0;
}

.mode-option.selected .check-icon {
  opacity: 1;
}


/* ==========================================================================
   Route Legend
   ========================================================================== */

.route-legend {
  display: none;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--hover-bg);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--ink);
}

.route-legend.active {
  display: flex;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.legend-line {
  width: 20px;
  height: 3px;
  border-radius: 2px;
}

.legend-line-mode {
  background: #00A651;  /* Bike green by default, updated via JS for drive */
}

.legend-line-desire {
  background: linear-gradient(90deg, #F5D76E, #D4A017);  /* Gold gradient */
  box-shadow: 0 0 4px rgba(227, 189, 51, 0.5);  /* Subtle glow */
}


/* ==========================================================================
   Buttons
   ========================================================================== */

.btn-header {
  padding: 10px var(--space-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s ease;
  white-space: nowrap;
  height: 40px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-header:hover:not(:disabled) {
  background: var(--hover-bg);
}

.btn-header:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}


/* ==========================================================================
   Map
   ========================================================================== */

#map {
  flex: 1;
  position: relative;
  z-index: var(--z-map);
  min-height: 0;
}

.leaflet-container {
  z-index: var(--z-map) !important;
}

.leaflet-pane {
  z-index: auto !important;
}


/* ==========================================================================
   Leaflet Controls
   ========================================================================== */

.leaflet-bar,
.leaflet-control-zoom,
.leaflet-control-zoom a {
  border: 1px solid var(--hairline) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: var(--shadow-sm) !important;
  background: var(--paper) !important;
  color: var(--ink) !important;
}

.leaflet-control-zoom {
  margin-bottom: var(--space-5) !important;
  margin-right: var(--space-5) !important;
}

.leaflet-control-zoom a {
  width: 28px !important;
  height: 28px !important;
  line-height: 28px !important;
  text-align: center !important;
  text-decoration: none !important;
  display: block !important;
}

.leaflet-control-zoom a:hover {
  background: var(--hover-bg) !important;
}

.leaflet-control-zoom a:focus,
.leaflet-control-zoom a:active,
.leaflet-bar a:focus,
.leaflet-bar a:active {
  outline: none !important;
  box-shadow: var(--shadow-sm) !important;
  background: var(--paper) !important;
  border: 1px solid var(--hairline) !important;
}

.leaflet-bar a {
  border-bottom: 1px solid var(--hairline) !important;
}

.leaflet-bar a:last-child {
  border-bottom: none !important;
}

.leaflet-control-attribution {
  font-family: var(--font-ui);
  font-size: 11px;
  opacity: 0.85;
}


/* ==========================================================================
   Map Markers
   ========================================================================== */

.custom-marker {
  background: transparent !important;
  border: none !important;
}

.pin-container {
  position: relative;
  width: 30px;
  height: 44px;
}

.pin-head {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-52%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  box-shadow:
    0 3px 6px rgba(0, 0, 0, 0.3),
    inset -3px -3px 6px rgba(0, 0, 0, 0.2),
    inset 3px 3px 6px rgba(255, 255, 255, 0.4);
  z-index: 2;
}

.pin-head::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 6px;
  height: 6px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  filter: blur(1px);
}

.pin-needle {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-45%);
  width: 2px;
  height: 34px;
  background: linear-gradient(to right,
    rgba(100, 100, 100, 0.9) 0%,
    rgba(180, 180, 180, 1) 50%,
    rgba(100, 100, 100, 0.9) 100%);
  box-shadow:
    1px 0 1px rgba(255, 255, 255, 0.3),
    -1px 0 2px rgba(0, 0, 0, 0.4);
  border-radius: 1px;
  z-index: 1;
}

.pin-shadow {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 4px;
  background: radial-gradient(ellipse at center,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
}


/* ==========================================================================
   Autocomplete (shared base styles)
   ========================================================================== */

.autocomplete-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--space-1);
  max-height: 200px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: var(--z-autocomplete);
}

.autocomplete-results.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.autocomplete-item {
  padding: var(--space-3) 14px;
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  border-bottom: 1px solid var(--hairline);
  transition: background 0.1s ease;
  position: relative;
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
  background: var(--color-start-light);
}

.autocomplete-item.selected::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-start);
}

.autocomplete-item.autocomplete-loading,
.autocomplete-item.autocomplete-error,
.autocomplete-item.autocomplete-empty {
  cursor: default;
  opacity: 0.6;
  font-style: italic;
}

.autocomplete-item.autocomplete-loading:hover,
.autocomplete-item.autocomplete-error:hover,
.autocomplete-item.autocomplete-empty:hover {
  background: transparent;
}

/* Topbar autocomplete variant - extends left position */
.route-field .autocomplete-results {
  left: 50px;
  max-height: 240px;
}


/* ==========================================================================
   Google Places Autocomplete Override
   ========================================================================== */

.pac-container {
  background: var(--paper) !important;
  border: 1px solid var(--hairline) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-lg) !important;
  margin-top: var(--space-1) !important;
  font-family: var(--font-ui) !important;
  padding: 0 !important;
  z-index: var(--z-pac-container) !important;
}

.pac-container::after {
  display: none !important;
}

.pac-item {
  padding: var(--space-2) var(--space-3) !important;
  font-size: 12px !important;
  color: var(--ink) !important;
  background: var(--paper) !important;
  cursor: pointer !important;
  border-top: 1px solid var(--hairline) !important;
  font-family: var(--font-ui) !important;
  line-height: 1.4 !important;
}

.pac-item * {
  color: var(--ink) !important;
  background: transparent !important;
}

.pac-item:first-child {
  border-top: none !important;
  border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
}

.pac-item:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md) !important;
}

.pac-item:hover,
.pac-item-selected {
  background: var(--color-start-light) !important;
  color: var(--ink) !important;
}

.pac-item:hover *,
.pac-item-selected * {
  color: var(--ink) !important;
}

.pac-item-selected {
  position: relative;
}

.pac-item-selected::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-start);
}

.pac-icon {
  display: none !important;
}

.pac-item-query {
  font-size: 12px !important;
  color: var(--ink) !important;
  font-family: var(--font-ui) !important;
}

.pac-matched {
  font-weight: 600 !important;
  color: var(--ink) !important;
}

.hdpi.pac-logo::after {
  background-image: none !important;
}


/* ==========================================================================
   Modal
   ========================================================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: var(--z-modal);
}

.modal.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  width: 90%;
  max-width: 480px;
  background: var(--paper);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--hairline);
}

.modal-header h2 {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.1px;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  font-size: 24px;
  line-height: 1;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: var(--hover-bg);
}

.modal-body {
  padding: var(--space-6);
}

.input-group {
  position: relative;
  margin-bottom: var(--space-5);
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.8;
}

.input-group input {
  width: 100%;
  padding: var(--space-3) 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--ink);
  box-sizing: border-box;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-group input:focus {
  outline: none;
  border-color: rgba(0, 0, 0, 0.3);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.input-group input::placeholder {
  color: var(--ink);
  opacity: 0.4;
}


/* ==========================================================================
   Calculating Indicator
   ========================================================================== */

.calculating-indicator {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  font-size: 13px;
  color: var(--ink);
  opacity: 0.7;
}

.calculating-indicator.active {
  display: flex;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--hairline);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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


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

/* All topbar items wrap naturally - no custom ordering */
@media (max-width: 1100px) {
  .header-divider {
    display: none;
  }
}

/* Smaller screens: stack route fields vertically */
@media (max-width: 720px) {
  .route-fields {
    flex-direction: column;
    width: 100%;
  }

  .route-field {
    width: 100%;
  }

  .route-field-value {
    min-width: unset;
    max-width: unset;
    flex: 1;
  }

  .route-bar {
    width: 100%;
  }
}

/* Mobile: full-width action buttons */
@media (max-width: 540px) {
  .topbar {
    padding: var(--space-3) var(--space-4);
  }

  .action-controls {
    width: 100%;
    justify-content: stretch;
  }

  .action-controls .btn-header {
    flex: 1;
  }
}