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

:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7a;
  --border: #d8dee6;
  --green: #1f9d55;
  --green-bg: #e8f7ee;
  --red: #d64545;
  --red-bg: #fdecec;
  --accent: #2563eb;
  --shadow: 0 8px 24px rgba(26, 35, 50, 0.08);
  --radius: 12px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface);
}

.lang-toggle button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 14px;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--accent);
  color: #fff;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.dates {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}

.summary {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.summary.available {
  color: var(--green);
}

.summary.none {
  color: var(--red);
}

.rooms {
  display: grid;
  gap: 10px;
}

.room {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
}

.room.available {
  border-color: #b8e6c8;
  background: var(--green-bg);
}

.room.occupied {
  border-color: #f0bcbc;
  background: var(--red-bg);
}

.room-name {
  font-weight: 600;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot.green {
  background: var(--green);
}

.dot.red {
  background: var(--red);
}

.meta {
  margin-top: 16px;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted);
}

.error-page,
.error-banner {
  text-align: center;
  color: var(--red);
}

.error-page {
  padding: 48px 16px;
}

.error-page h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.hidden {
  display: none !important;
}

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

  .title {
    font-size: 1.25rem;
  }
}