/* ホン通 - デザイントークン
   Ink   : #14213D (夜の読書を思わせる濃紺)
   Ember : #B9862F (栞のリボンを思わせる琥珀)
   Paper : #FAF7F0 (紙の質感)
   Line  : #DCD5C2 (罫線)
   TextDk: #1F2430
*/

:root {
  --ink: #14213D;
  --ink-deep: #0D1626;
  --ember: #B9862F;
  --ember-soft: #E7CE9C;
  --paper: #FAF7F0;
  --line: #DCD5C2;
  --text-dark: #1F2430;
  --text-muted: #5B6270;
  --danger: #9C3B3B;

  --font-display: 'Shippori Mincho B1', serif;
  --font-body: 'Zen Kaku Gothic New', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--text-dark);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  padding: 44px 24px 40px;
  overflow: hidden;
}

.hero-ribbon {
  position: absolute;
  top: 0;
  left: 28px;
  width: 14px;
  height: 92px;
  background: var(--ember);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 76%, 0 100%);
}

.hero-inner {
  max-width: 480px;
  margin: 0 auto;
  padding-left: 24px;
}

.hero-kicker {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ember-soft);
  margin: 0 0 6px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  margin: 0 0 10px;
}

.hero-copy {
  font-size: 14px;
  line-height: 1.8;
  color: #D8DCE6;
  margin: 0;
  max-width: 30em;
}

/* ---------- Layout ---------- */
.app {
  max-width: 480px;
  margin: -20px auto 0;
  padding: 0 20px 64px;
}

.panel {
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px 20px;
}

/* ---------- Tabs ---------- */
.tab-row {
  display: flex;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.tab {
  flex: 1;
  background: none;
  border: none;
  padding: 10px 4px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--ember);
  font-weight: 700;
}

/* ---------- Forms ---------- */
.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.form .hint { font-weight: 400; margin-left: 4px; }

.form input,
.form select,
.form textarea {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text-dark);
  background: var(--paper);
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid var(--ember);
  outline-offset: 1px;
}

.form-inline {
  flex-direction: row;
  align-items: stretch;
  margin-top: 14px;
}

.form-inline input { flex: 1; }

.form-message {
  min-height: 1.2em;
  font-size: 13px;
  margin: 0;
  color: var(--danger);
}

.form-message.is-success { color: #2E6B3E; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  padding: 12px 16px;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-deep); }

.btn-secondary { background: var(--paper); color: var(--ink); border-color: var(--line); }

.btn-ghost { background: none; color: var(--text-muted); border-color: var(--line); }

.btn-small { padding: 6px 10px; font-size: 12px; }

.btn-scan {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--ember);
  color: var(--ink-deep);
  margin-bottom: 8px;
}
.btn-scan:hover { background: #A97A2B; }

.btn-scan-icon {
  width: 18px; height: 14px;
  background: repeating-linear-gradient(
    90deg, currentColor 0, currentColor 2px, transparent 2px, transparent 4px
  );
}

/* ---------- Library ---------- */
.library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.signed-in-as {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.shelf-title {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 28px 0 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.shelf {
  list-style: none;
  margin: 0;
  padding: 0;
}

.shelf-item {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.shelf-item-cover {
  width: 42px;
  height: 60px;
  flex-shrink: 0;
  background: var(--line);
  background-size: cover;
  background-position: center;
  border-radius: 2px;
}

.shelf-item-title {
  font-family: var(--font-display);
  font-size: 15px;
  margin: 0 0 4px;
  line-height: 1.4;
}

.shelf-item-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

.status-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  margin-top: 6px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text-muted);
}

.status-badge[data-status="finished"] { border-color: var(--ember); color: #8A6222; }

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  padding: 30px 10px;
}

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(13, 22, 38, 0.6);
  display: flex;
  align-items: flex-end;
  z-index: 50;
}

.modal-card {
  background: #fff;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  border-radius: 10px 10px 0 0;
  padding: 18px 20px 28px;
  max-height: 88vh;
  overflow-y: auto;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 14px;
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 6px;
}

#scanner-viewport {
  width: 100%;
  min-height: 260px;
  background: #000;
  border-radius: 4px;
  overflow: hidden;
}

/* hidden属性がCSSのdisplay指定より優先されるように修正 */
.modal[hidden] { display: none; }
.form[hidden] { display: none; }