:root {
  --bg: #050816;
  --bg-elevated: #0b1020;
  --bg-elevated-soft: #11172a;
  --accent: #4f46e5;
  --accent-soft: rgba(79, 70, 229, 0.12);
  --accent-strong: #a855f7;
  --text: #f9fafb;
  --text-muted: #9ca3af;
  --border-subtle: rgba(148, 163, 184, 0.35);
  --error: #f97373;
  --radius-lg: 18px;
  --radius-sm: 10px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.85);
  --shadow-subtle: 0 14px 35px rgba(15, 23, 42, 0.7);
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1f2937 0, transparent 55%), var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100vh;
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.header {
  padding: 18px 20px 10px;
}

.header h1 {
  margin: 0 0 6px;
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  letter-spacing: 0.02em;
}

.header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.main {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 22px;
  align-items: flex-start;
}

.planner-card,
.results-card {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.99));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  padding: 20px 20px 18px;
  position: relative;
  overflow: hidden;
}

.planner-card::before,
.results-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0% 0%, rgba(79, 70, 229, 0.16), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(248, 250, 252, 0.03), transparent 68%);
  opacity: 0.7;
  pointer-events: none;
}

.planner-card > *,
.results-card > * {
  position: relative;
  z-index: 1;
}

.planner-card h2,
.results-card h2 {
  margin: 0 0 16px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.planner-form {
  display: grid;
  gap: 14px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.88rem;
  font-weight: 500;
  color: #e5e7eb;
}

input[type="date"],
select,
textarea {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  padding: 9px 11px;
  font: inherit;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease, transform 120ms ease;
}

input[type="date"]:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(79, 70, 229, 0.65), 0 14px 35px rgba(37, 99, 235, 0.4);
  background: rgba(15, 23, 42, 0.98);
  transform: translateY(-1px);
}

input[type="date"]::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

.field-hint {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.field-hint.error {
  color: var(--error);
}

.primary-button {
  margin-top: 6px;
  border-radius: 999px;
  border: none;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 14px 30px rgba(79, 70, 229, 0.6);
  transition: transform 110ms ease, box-shadow 110ms ease, filter 120ms ease;
}

.primary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(79, 70, 229, 0.72);
  filter: brightness(1.03);
}

.primary-button:active {
  transform: translateY(0);
  box-shadow: 0 10px 22px rgba(79, 70, 229, 0.55);
  filter: brightness(0.97);
}

.results-empty {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.results-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.itinerary-day {
  border-radius: 14px;
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.08), transparent 55%),
    rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(148, 163, 184, 0.55);
  padding: 10px 11px 10px;
  box-shadow: var(--shadow-subtle);
}

.itinerary-day-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}

.itinerary-day-title {
  font-size: 0.9rem;
  font-weight: 600;
}

.itinerary-day-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.itinerary-activities {
  margin: 0;
  padding-left: 18px;
  font-size: 0.86rem;
  color: #e5e7eb;
}

.itinerary-activities li + li {
  margin-top: 2px;
}

.itinerary-note {
  margin: 6px 0 0;
  font-size: 0.78rem;
  color: var(--accent-strong);
}

.footer {
  margin-top: auto;
  padding: 4px 20px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

@media (max-width: 820px) {
  .app {
    padding-inline: 16px;
  }

  .main {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}