.app-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 960px) {
  .app-layout {
    grid-template-columns: 440px 1fr;
    gap: 2.5rem;
  }
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
}

.panel-title {
  color: var(--text-primary);
  font: 700 1.35rem/1.2 var(--display);
  letter-spacing: -.02em;
  margin-bottom: 1.25rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}

/* ─────────────────────────────────────────────
   Form Section Styles
   ───────────────────────────────────────────── */
.form-section {
  border: none;
  margin-bottom: 1.75rem;
}

.section-label {
  font: 700 .72rem var(--mono);
  color: var(--text-secondary);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: block;
}

.field-guidance {
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.45;
}

.field-guidance code {
  background: var(--surface-card);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: .8em;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  margin-bottom: 1rem;
}

.input-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.input-group input[type="number"],
.input-group input[type="datetime-local"],
.city-input {
  width: 100%;
  padding: .75rem .9rem;
  background: var(--surface-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: var(--body);
  font-size: .95rem;
  color: var(--text-primary);
  transition: border-color .2s, box-shadow .2s;
}

.input-group input:focus,
.city-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.input-hint {
  font-size: .75rem;
  color: var(--text-muted);
}

/* City List Rows */
.city-list {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  margin-bottom: 1.25rem;
}

.city-row {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  background: var(--surface-card);
  padding: .85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: background .2s;
}

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

.city-label {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.city-input-wrapper {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.city-num-badge {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--surface-input);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  font: 700 .8rem var(--mono);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.btn-remove-stop {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-strong);
  background: var(--surface-input);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1rem;
  font-weight: bold;
  flex-shrink: 0;
  transition: all .2s;
}

.btn-remove-stop:hover:not(:disabled) {
  background: #2d3748;
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.btn-remove-stop:disabled {
  opacity: .3;
  cursor: not-allowed;
  border-color: var(--border);
}

.btn-add-stop {
  width: 100%;
  padding: .7rem;
  background: var(--surface-input);
  border: 1px dashed var(--border-strong);
  color: var(--text-primary);
  font-family: var(--body);
  font-weight: 600;
  font-size: .9rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  transition: all .2s;
}

.btn-add-stop:hover {
  background: var(--surface-card);
  border-color: var(--border-focus);
}

/* Error Banner */
.form-error-banner {
  background: rgba(220, 38, 38, 0.12);
  border: 1px solid rgba(220, 38, 38, 0.4);
  color: #fca5a5;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  line-height: 1.45;
  margin-bottom: 1.25rem;
  animation: fadeIn .3s ease;
}

/* Manual Distance Prompt (appears when OSRM returns NoRoute) */
.manual-distance-card {
  background: var(--surface-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
  animation: fadeIn .3s ease;
}

.manual-distance-label {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: .85rem;
}

.manual-distance-row {
  display: flex;
  gap: .75rem;
  align-items: stretch;
}

.manual-distance-input {
  flex: 1;
  padding: .75rem .9rem;
  background: var(--surface-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: var(--body);
  font-size: 1rem;
  color: var(--text-primary);
  transition: border-color .2s, box-shadow .2s;
}

.manual-distance-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.btn-manual-submit {
  padding: .75rem 1.1rem;
  background: var(--surface-input);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--body);
  font-size: .9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
}

.btn-manual-submit:hover {
  background: #2d3748;
  border-color: var(--border-focus);
}


/* Submit Button */
.btn-submit {
  width: 100%;
  padding: 1rem 1.5rem;
  background: var(--accent-white);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--body);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.15);
  transition: all .25s ease;
}

.btn-submit:hover {
  background: #e2e8f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(255, 255, 255, 0.22);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-arrow {
  font-size: 1.2rem;
  transition: transform .2s;
}

.btn-submit:hover .btn-arrow {
  transform: translateX(4px);
}

/* ─────────────────────────────────────────────
   Results Section Styles (MONOCHROME & WEATHER FIRST)
   ───────────────────────────────────────────── */
.results-empty {
  text-align: center;
  padding: 3.5rem 1.5rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  opacity: .7;
}

.results-empty h2 {
  color: var(--text-primary);
  font: 700 1.6rem var(--display);
  margin-bottom: .6rem;
}

.results-empty p {
  max-width: 420px;
  margin: 0 auto;
  font-size: .95rem;
  color: var(--text-secondary);
}

/* Loading state */
.results-loading {
  text-align: center;
  padding: 4rem 1.5rem;
  color: var(--text-primary);
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--surface-card);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  animation: spin 1s linear infinite;
}

.loading-text {
  font-weight: 500;
  font-size: .98rem;
  color: var(--text-secondary);
}

/* Active Results View */
.results-header {
  margin-bottom: 1.25rem;
}

.results-header h2 {
  color: var(--text-primary);
  font: 700 clamp(1.6rem, 3vw, 2.2rem) var(--display);
  letter-spacing: -.03em;
}

.results-subtitle {
  color: var(--text-secondary);
  font-size: .95rem;
  margin-top: .25rem;
  font-weight: 500;
}

/* Weather Warning Banner */
.weather-notice-banner {
  background: var(--surface-card);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  padding: .85rem 1rem;
  border-radius: var(--radius-md);
  font-size: .88rem;
  margin-bottom: 1.5rem;
  line-height: 1.45;
}

/* Timeline Section */
.timeline-section {
  margin-bottom: 2rem;
}

.stops-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.stop-card-item {
  position: relative;
  display: flex;
  flex-direction: column;
}

.stop-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 2;
  transition: transform .2s ease, border-color .2s ease;
}

.stop-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

/* WEATHER HERO SECTION AT TOP OF CARD */
.weather-hero-card {
  background: var(--surface-input);
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  padding: 1.1rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.weather-hero-card--muted {
  background: var(--surface-input);
  color: var(--text-muted);
  padding: .85rem 1.25rem;
}

.weather-hero-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.weather-hero-icon {
  width: 48px;
  height: 48px;
  filter: brightness(1.1) contrast(1.1);
  flex-shrink: 0;
}

.weather-hero-info {
  display: flex;
  flex-direction: column;
}

.weather-hero-temp {
  font: 700 2.2rem/1 var(--display);
  color: var(--text-primary);
  letter-spacing: -.02em;
}

.weather-hero-desc {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: capitalize;
}

.weather-pop-badge {
  background: var(--surface-card);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  font: 700 .78rem var(--mono);
  padding: .35em .75em;
  border-radius: 20px;
  white-space: nowrap;
}

.weather-unavailable-text {
  font-size: .88rem;
  font-weight: 500;
}

/* Stop Card Body (Location & ETA) */
.stop-card-body {
  padding: 1.1rem 1.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: var(--surface-card);
}

.stop-location-info {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}

.stop-badge {
  background: var(--accent-badge);
  color: var(--text-primary);
  font: 700 .75rem var(--mono);
  padding: .25em .65em;
  border-radius: var(--radius-sm);
  letter-spacing: .05em;
  white-space: nowrap;
}

.stop-city-name {
  font: 700 1.25rem var(--display);
  color: var(--text-primary);
  letter-spacing: -.02em;
}

/* ─────────────────────────────────────────────
   CSS CROSSFADE ANIMATION BETWEEN ENGLISH & TAMIL
   ───────────────────────────────────────────── */
.city-name-fader {
  position: relative;
  display: inline-block;
  vertical-align: baseline;
  white-space: nowrap;
}

.city-name-fader .name-en,
.city-name-fader .name-ta {
  display: inline-block;
  transition: opacity 0.8s ease-in-out;
}

.city-name-fader .name-en {
  animation: crossFadeEn 7s ease-in-out infinite;
}

.city-name-fader .name-ta {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  color: var(--accent-silver);
  font-family: 'Outfit', sans-serif;
  animation: crossFadeTa 7s ease-in-out infinite;
}

@keyframes crossFadeEn {
  0%, 48%, 100% {
    opacity: 1;
    visibility: visible;
  }
  55%, 93% {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes crossFadeTa {
  0%, 48%, 100% {
    opacity: 0;
    visibility: hidden;
  }
  55%, 93% {
    opacity: 1;
    visibility: visible;
  }
}

.stop-eta-info {
  text-align: right;
}

.eta-label {
  font: .68rem var(--mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  display: block;
}

.eta-time {
  font-weight: 700;
  font-size: .98rem;
  color: var(--text-primary);
}

/* Leg Connector between stops */
.leg-connector {
  position: relative;
  padding: 1.25rem 0 1.25rem 2.2rem;
  margin-left: 1.5rem;
  border-left: 2px dashed var(--border-strong);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1;
}

.leg-info-pill {
  background: var(--surface-input);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  font: 600 .8rem var(--mono);
  padding: .4em .9em;
  border-radius: 20px;
  letter-spacing: .02em;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}

.leg-icon {
  font-size: .95rem;
}

/* ─────────────────────────────────────────────
   Metrics Section (Below Weather Timeline)
   ───────────────────────────────────────────── */
.metrics-section {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
}

.metrics-title {
  color: var(--text-primary);
  font: 700 1.25rem var(--display);
  margin-bottom: 1.25rem;
  letter-spacing: -.02em;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

.metric-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  padding: 1.1rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.metric-card--accent {
  background: var(--surface-input);
  border-color: var(--border-strong);
}

.metric-card--accent .metric-value {
  color: var(--accent-white);
}

.metric-label {
  font: 700 .68rem var(--mono);
  color: var(--text-muted);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: .4rem;
}

.metric-value {
  font: 700 clamp(1.75rem, 3.5vw, 2.25rem)/1 var(--display);
  color: var(--text-primary);
  margin-bottom: .25rem;
}

.metric-unit {
  font-size: .75rem;
  color: var(--text-muted);
}

/* ─────────────────────────────────────────────
   Animations & Responsive Adjustments
   ───────────────────────────────────────────── */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@media (max-width: 650px) {
  nav {
    min-height: 68px;
  }

  .weather-hero-card {
    flex-direction: column;
    align-items: flex-start;
    gap: .75rem;
  }

  .stop-card-body {
    flex-direction: column;
    align-items: flex-start;
    gap: .5rem;
  }

  .stop-eta-info {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .city-name-fader .name-en,
  .city-name-fader .name-ta {
    animation: none !important;
  }
  .city-name-fader .name-ta {
    display: none !important;
  }
}

/* Portfolio typography, accent, and compact tool layout. */
.app-layout { grid-template-columns:minmax(0,1fr); gap:28px; }
.panel { min-width:0; background:var(--bg); border-radius:6px; padding:24px; box-shadow:none; }
.form-panel { background:var(--surface); }
.panel-title, .results-header h2, .metrics-title { font-weight:500; letter-spacing:-.035em; }
.results-header h2 { font-size:28px; }
.results-empty h2 { font:500 27px/1.2 var(--font); letter-spacing:-.035em; }
.section-label { font:10px/1.7 var(--mono); letter-spacing:.04em; color:var(--accent); }
.city-row { background:var(--bg); }
.city-input { min-width:0; }
.city-num-badge { color:var(--accent); background:var(--accent-soft); border:0; width:25px; height:25px; }
.city-input-wrapper { gap:8px; }
.city-input-wrapper .city-input { flex:1; width:0; }
.btn-remove-stop { width:44px; height:44px; min-width:44px; }
.btn-remove-stop:hover:not(:disabled), .btn-manual-submit:hover { background:var(--accent-soft); }
.btn-add-stop { min-height:46px; }
.btn-submit { min-height:48px; padding:12px 16px; color:var(--bg); background:var(--accent); font-size:15px; font-weight:500; box-shadow:none; border-radius:4px; }
.btn-submit:hover { background:var(--accent); filter:brightness(.95); box-shadow:none; }
.input-group input, .city-input, .manual-distance-input { font-size:16px; min-height:46px; }
.input-group input:focus, .city-input:focus, .manual-distance-input:focus { border-color:var(--accent); box-shadow:0 0 0 2px var(--accent-soft); }
.form-error-banner { background:var(--error-soft); color:var(--error); border-color:var(--error); }
.manual-distance-row { flex-wrap:wrap; }
.manual-distance-input { min-width:0; width:100%; }
.btn-manual-submit { min-height:46px; }
.metric-value, .weather-hero-temp, .stop-city-name { font-family:var(--font); font-weight:500; }
.metric-card--accent { background:var(--accent-soft); }
.stop-badge { color:var(--accent); }
.stop-card-body, .weather-hero-card { padding:18px; }
.weather-hero-left, .weather-hero-info, .stop-location-info { min-width:0; }
.stop-city-name { overflow-wrap:anywhere; }
.city-name-fader { display:inline-grid; white-space:normal; max-width:100%; }
.city-name-fader .name-en, .city-name-fader .name-ta { grid-area:1 / 1; position:static; }
.leg-connector { margin-left:15px; padding-left:16px; }
.leg-info-pill { white-space:normal; }
.spinner { border-top-color:var(--accent); }
@media(min-width:1050px) { .app-layout { grid-template-columns:410px minmax(0,1fr); } }
@media(max-width:480px) { .panel { padding:18px; } .input-grid { grid-template-columns:minmax(0,1fr); gap:0; } .weather-pop-badge { white-space:normal; } }

fieldset { min-width:0; padding:0; }