:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #cbd5e1;
  --text: #0f172a;
  --muted: #475569;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --success-hover: #15803d;
  --danger: #dc2626;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.page-header {
  background: #0f172a;
  color: #ffffff;
  padding: 1rem 1.25rem;
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-header h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
}

.page-header p {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
  color: #cbd5e1;
}

.session-counter {
  background: rgba(22, 163, 74, 0.22);
  border: 1px solid #22c55e;
  color: #bbf7d0;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}

.session-counter strong {
  color: #ffffff;
  font-size: 1.05rem;
}

.saved-banner {
  background: #ecfdf5;
  border: 2px solid #10b981;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.15);
}

.saved-banner[hidden] {
  display: none !important;
}

.saved-banner-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.saved-banner-text strong {
  color: #065f46;
  font-size: 1.08rem;
}

.saved-banner-text span {
  color: #047857;
  font-size: 0.92rem;
}

.saved-banner-btn {
  background: #059669;
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 0.7rem 1.15rem;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.saved-banner-btn:hover {
  background: #047857;
}

.container {
  max-width: 1180px;
  margin: 1.25rem auto 2.5rem;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.top-steps {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.25rem;
}

@media (max-width: 860px) {
  .top-steps {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card.highlight-attention {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.25);
}

.step-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.step-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  flex-shrink: 0;
}

.step-hint {
  margin: -0.35rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Interactive Local Map Canvas */
.map-box {
  position: relative;
  border: 2px solid #94a3b8;
  border-radius: 10px;
  overflow: hidden;
  background: #e8efe5;
}

#plan-canvas {
  display: block;
  width: 100%;
  height: auto;
  cursor: crosshair;
  touch-action: manipulation;
}

/* Photo Upload Button */
.photo-btn-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 1.5rem 1rem;
  border: 2px dashed var(--primary);
  border-radius: 12px;
  background: #eff6ff;
  color: #1e3a8a;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.photo-btn-label.has-photo {
  background: #f0fdf4;
  border-color: var(--success);
  color: #14532d;
}

.photo-btn-label:hover,
.photo-btn-label.dragover {
  background: #dbeafe;
}

.photo-btn-label strong {
  font-size: 1.08rem;
}

.photo-btn-label span {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Date block */
.date-section {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.field-label {
  font-size: 0.95rem;
  font-weight: 600;
  display: block;
  margin-bottom: 0.3rem;
}

input[type="date"],
input[type="text"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-size: 0.98rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
}

input[type="date"]:disabled {
  background: #e2e8f0;
  color: #64748b;
}

.unknown-date-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  padding: 0.55rem 0.75rem;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: 8px;
}

.unknown-date-check input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: #d97706;
}

/* Result Collage Card */
.result-preview-wrap {
  background: #1e293b;
  padding: 0.85rem;
  border-radius: 10px;
  text-align: center;
}

#result-canvas {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.action-buttons {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.big-btn {
  flex: 1;
  min-width: 240px;
  padding: 0.95rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: transform 0.05s ease, background-color 0.15s ease, opacity 0.15s ease;
}

.big-btn:disabled {
  opacity: 0.65;
  cursor: wait;
}

.big-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.big-btn-primary {
  background: var(--success);
  color: #ffffff;
  flex: 1.6;
}

.big-btn-primary:hover:not(:disabled) {
  background: var(--success-hover);
}

.big-btn-secondary {
  background: var(--primary);
  color: #ffffff;
  flex: 1;
}

.big-btn-secondary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(15px);
  background: #0f172a;
  color: #ffffff;
  padding: 0.8rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}