/* ==========================================================================
   Museum QR Docent -- shared stylesheet
   Mobile-first: visitors reach these pages by scanning a QR code on a phone.
   ========================================================================== */

:root {
  --color-bg: #f7f5f1;
  --color-surface: #ffffff;
  --color-text: #2b2a27;
  --color-text-muted: #6b6862;
  --color-border: #ddd9d1;
  --color-accent: #6b5b4a;
  --color-accent-contrast: #ffffff;
  --color-chip-bg: #efece6;
  --color-chip-active-bg: #6b5b4a;
  --color-chip-active-text: #ffffff;
  --color-notice-bg: #f4ead9;
  --color-notice-border: #d8c39a;
  --color-notice-text: #6b5327;
  --radius: 10px;
  --spacing: 1rem;
  font-size: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR",
    "Malgun Gothic", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

/* --------------------------------------------------------------------------
   Floor / docent page layout
   -------------------------------------------------------------------------- */

.docent {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* Brand logo */
.brand-logo {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  margin: 0 auto 1.5rem;
}

/* Language chip row */
.lang-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.lang-chip {
  flex: 0 0 auto;
  min-height: 48px;
  padding: 0.5rem 1.1rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-chip-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.lang-chip:active {
  transform: scale(0.98);
}

.lang-chip.is-active {
  background: var(--color-chip-active-bg);
  color: var(--color-chip-active-text);
  border-color: var(--color-chip-active-bg);
}

/* Title + content */
.title {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.content {
  font-size: 1.15rem;
  line-height: 1.85;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 0 0 1.5rem;
  white-space: pre-line;
}

/* Audio controls */
.audio-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.btn {
  min-height: 48px;
  padding: 0.65rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-audio.is-playing {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
}

/* Voice-limited notice */
.notice {
  font-size: 0.95rem;
  color: var(--color-notice-text);
  background: var(--color-notice-bg);
  border: 1px solid var(--color-notice-border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}

.notice[hidden] {
  display: none;
}

/* --------------------------------------------------------------------------
   Root admin/test landing page
   -------------------------------------------------------------------------- */

.landing {
  max-width: 480px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
  text-align: center;
}

.landing h1 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.landing .landing-note {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.floor-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.floor-card {
  display: block;
  min-height: 64px;
  padding: 1.1rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.floor-card:active {
  transform: scale(0.99);
}

.floor-card:hover,
.floor-card:focus-visible {
  background: var(--color-chip-bg);
  border-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Small-screen refinements
   -------------------------------------------------------------------------- */

@media (max-width: 360px) {
  :root {
    font-size: 16px;
  }

  .title {
    font-size: 1.4rem;
  }
}