:root {
  --busy: #ffc9c9;
  --busy-deep: #c87a7a;
  --free: #b2f2bb;
  --free-deep: #6a9a72;
  --accent: #a5d8ff;
  --accent-deep: #5c9fd0;
  --bg: #faf6f0;
  --card: #ffffff;
  --text: #3a332d;
  --subtext: #7a7068;
  --border: #e8e0d5;
  --inactive: #d9d2c5;
  --warning: #e89b7a;
  --shadow-sm: 0 1px 2px rgba(58, 51, 45, 0.04);
  --shadow-md: 0 4px 16px -4px rgba(58, 51, 45, 0.08);
  --shadow-lg: 0 16px 48px -16px rgba(58, 51, 45, 0.18);
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
}

* { box-sizing: border-box; }
html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  font-size: 15px;
  line-height: 1.5;
}
body {
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  display: flex;
  flex-direction: column;
}
button { font-family: inherit; cursor: pointer; }
button:focus-visible { outline: 2px solid var(--accent-deep); outline-offset: 2px; }

/* === Header === */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px calc(14px + env(safe-area-inset-top, 0px));
  padding-top: max(14px, env(safe-area-inset-top, 0px));
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.hd-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.hd-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-deep);
}
.hd-logo svg { width: 22px; height: 22px; }
.hd-title { font-weight: 700; font-size: 16px; letter-spacing: 0.02em; }
.hd-sub { font-size: 11px; color: var(--subtext); }
.hd-right { display: flex; gap: 6px; }
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.icon-btn svg { width: 20px; height: 20px; }

/* === Main === */
.app-main { flex: 1; padding: 12px 16px 90px; max-width: 720px; width: 100%; margin: 0 auto; }
.controls { margin-bottom: 12px; }

/* === Top Bar === */
.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0 14px;
  margin-bottom: 4px;
}
.now-summary {
  flex: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}
.now-line {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
}
.pill-floor {
  flex: 0 0 auto;
  min-width: 92px;
}
.pill {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  min-height: 40px;
  scroll-snap-align: start;
  box-shadow: var(--shadow-sm);
  transition: transform 100ms;
}
.pill:active { transform: scale(0.96); }
.pill .pill-label {
  font-size: 10.5px;
  color: var(--subtext);
  font-weight: 500;
  margin-right: 2px;
}
.pill .pill-value {
  font-size: 14px;
  font-weight: 700;
}
.pill .pill-caret {
  width: 14px;
  height: 14px;
  color: var(--subtext);
}
.pill.pill-now {
  background: var(--accent);
  border-color: var(--accent-deep);
}
.pill.pill-now .pill-value { color: var(--accent-deep); }
.pill.pill-now { padding-left: 12px; padding-right: 14px; }

/* === Chip rows === */
.chip-row {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 2px 0;
}
.chip-row::-webkit-scrollbar { display: none; }
.chips-wrap { flex-wrap: wrap; overflow-x: visible; }
.chip {
  flex: 0 0 auto;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.chip.on {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  font-weight: 600;
}
.chip[data-kind="free"] { background: var(--free); border-color: var(--free-deep); color: var(--text); }
.chip[data-kind="free"].on { background: var(--free-deep); color: var(--bg); }

.time-display {
  font-size: 11.5px;
  color: var(--subtext);
  margin: 4px 4px 12px;
  text-align: center;
  letter-spacing: 0.02em;
}

/* === View toggle === */
.view-toggle-wrap { margin: 12px 0; }
.view-toggle {
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  box-shadow: var(--shadow-sm);
}
.vt-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  border: none;
  background: transparent;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--subtext);
  transition: all 160ms;
}
.vt-btn.on {
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
}
.vt-btn svg { width: 16px; height: 16px; }

/* === Content === */
.content { margin-top: 4px; }

/* List view */
.list-section {
  margin-top: 18px;
}
.list-section-head {
  font-size: 11px;
  color: var(--subtext);
  margin: 0 0 8px;
  letter-spacing: 0.1em;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.list-section-head::before, .list-section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 8px;
  transition: transform 120ms, box-shadow 120ms;
  cursor: pointer;
  text-align: left;
  width: 100%;
  font-family: inherit;
  color: inherit;
}
.list-item:active { transform: scale(0.98); }
.list-item:hover { box-shadow: var(--shadow-md); }
.list-item .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.list-item .dot.free { background: var(--free-deep); }
.list-item .dot.busy { background: var(--busy-deep); }
.list-item .room-id {
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  min-width: 54px;
}
.list-item .body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.list-item .room-line {
  font-size: 13px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-item .badge.friends [data-icon] {
  display: inline-flex;
  width: 14px;
  height: 14px;
  margin-right: 2px;
}
.list-item .badge.friends [data-icon] svg {
  width: 100%;
  height: 100%;
}
.list-item .room-meta {
  font-size: 11px;
  color: var(--subtext);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-item .badges {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: 10.5px;
  color: var(--subtext);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--bg);
  font-weight: 600;
  font-size: 10px;
}
.badge.friends { background: var(--accent); color: var(--accent-deep); }
.badge.tag { background: var(--bg); color: var(--subtext); border: 1px solid var(--border); }
.badge.big { background: var(--accent); color: var(--accent-deep); }

/* === Map (Realistic Floor Plan via SVG) === */
.bldg-floor {
  margin-bottom: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 12px 10px 16px;
  box-shadow: var(--shadow-sm);
}
.bldg-floor-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 0 6px;
}
.bldg-floor-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}
.bldg-floor-stat {
  font-size: 11px;
  color: var(--subtext);
}

.bldg-svg-wrap {
  width: 100%;
  background: linear-gradient(180deg, #f5efe5 0%, #ece4d5 100%);
  border-radius: var(--r-md);
  padding: 8px;
}
.floor-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* 建物の外形 */
.bldg-outline {
  fill: #fbf8f2;
  stroke: var(--text);
  stroke-width: 1.8;
  stroke-linejoin: miter;
  stroke-miterlimit: 10;
  stroke-linecap: square;
}
/* W棟別館 (本体から少しズレた構造) */
.bldg-outline-annex {
  fill: #fbf8f2;
}
.bldg-corridor {
  fill: none;
  stroke: var(--inactive);
  stroke-width: 1;
  stroke-dasharray: 2 2;
}

/* 教室セル (SVG) */
.svg-room { cursor: pointer; }
.svg-room rect {
  transition: opacity 120ms;
  stroke: rgba(0, 0, 0, 0.4);
  stroke-width: 1.4;
  stroke-linejoin: miter;
}
.svg-room.cell-free rect { fill: var(--free); stroke: var(--free-deep); }
.svg-room.cell-busy rect { fill: var(--busy); stroke: var(--busy-deep); }
.svg-room.cell-big rect { stroke: var(--accent-deep); stroke-width: 2; stroke-dasharray: none; }
.svg-room text {
  font-size: 8px;
  font-weight: 700;
  fill: var(--text);
  pointer-events: none;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", system-ui, sans-serif;
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 2.2;
  stroke-linejoin: round;
}
.svg-room.cell-free text { fill: #2e6b3a; }
.svg-room.cell-busy text { fill: #8e3f3f; }
.svg-room:active rect { opacity: 0.75; }

/* データに無い教室 (研究室・教員室など、灰色非タップ) */
.svg-room.cell-disabled rect {
  fill: #e8e2d8;
  stroke: #a89e8a;
  stroke-width: 1;
  stroke-dasharray: 2 2;
}
.svg-room.cell-disabled text {
  fill: #6a614f;
  font-weight: 500;
}
.svg-room.cell-disabled { cursor: default; pointer-events: none; }

/* 友達がいる印 */
.svg-friend-dot {
  fill: var(--accent-deep);
  stroke: white;
  stroke-width: 1.5;
}

/* ウィングラベル */
.wing-svg-label {
  font-size: 10px;
  font-weight: 700;
  fill: var(--subtext);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", system-ui, sans-serif;
}

/* 特殊エリア（食堂・ラウンジ・吹抜など） */
.svg-section rect {
  fill: rgba(232, 224, 213, 0.5);
  stroke: var(--inactive);
  stroke-width: 0.5;
  stroke-dasharray: 3 2;
}
.svg-section .section-label {
  font-size: 11px;
  font-weight: 600;
  fill: var(--subtext);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", system-ui, sans-serif;
  pointer-events: none;
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 2.5;
  stroke-linejoin: round;
}
/* 用途別の淡い色付け */
.svg-section-atrium rect { fill: rgba(165, 216, 255, 0.25); }
.svg-section-garden rect { fill: rgba(178, 242, 187, 0.35); }
.svg-section-lounge rect { fill: rgba(255, 222, 173, 0.3); }
.svg-section-cafeteria rect { fill: rgba(255, 222, 173, 0.4); }
.svg-section-shop rect { fill: rgba(240, 220, 200, 0.4); }
.svg-section-office rect { fill: rgba(225, 220, 210, 0.5); }
.svg-section-core rect { fill: rgba(210, 200, 188, 0.4); }
.svg-section-lab rect { fill: rgba(255, 222, 200, 0.3); }
.svg-section-outside rect { fill: rgba(178, 242, 187, 0.2); stroke-dasharray: 4 3; }
.svg-section-bike rect { fill: rgba(165, 216, 255, 0.2); }
.svg-section-exhibit rect { fill: rgba(220, 215, 240, 0.4); }

/* リスト表示の人がいる時のバッジ強調 */
.list-item .badge.friends {
  background: var(--accent);
  color: var(--accent-deep);
  font-weight: 700;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--subtext);
  font-size: 13px;
}

/* === Sheet (Detail Panel) === */
.sheet {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
}
.sheet[aria-hidden="false"] {
  pointer-events: auto;
}
.sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(40, 35, 30, 0.4);
  opacity: 0;
  transition: opacity 200ms;
}
.sheet[aria-hidden="false"] .sheet-backdrop { opacity: 1; }
.sheet-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--card);
  border-radius: 24px 24px 0 0;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 240ms cubic-bezier(0.32, 0.72, 0, 1);
  padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  box-shadow: var(--shadow-lg);
}
.sheet[aria-hidden="false"] .sheet-body { transform: translateY(0); }
.sheet-handle {
  width: 36px;
  height: 4px;
  background: var(--inactive);
  border-radius: 2px;
  margin: 12px auto 4px;
}
.sheet-content { padding: 8px 20px 20px; }
.sheet-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.sheet-room-id {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.sheet-status-pill {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
.sheet-status-pill.busy { background: var(--busy); color: #8e3f3f; }
.sheet-status-pill.free { background: var(--free); color: #2e6b3a; }
.sheet-meta-line {
  font-size: 12px;
  color: var(--subtext);
  margin-top: 4px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.sheet-section {
  margin-top: 20px;
}
.sheet-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--subtext);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.now-course-card {
  background: var(--busy);
  border-radius: var(--r-md);
  padding: 14px 16px;
  border: 1px solid var(--busy-deep);
}
.now-course-card .course-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}
.now-course-card .course-prof {
  font-size: 12px;
  color: #6e3c3c;
}
.now-course-card .course-time {
  font-size: 11px;
  color: #6e3c3c;
  margin-top: 6px;
}

.timeline-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.timeline-item:last-child { border-bottom: none; }
.timeline-time {
  font-weight: 700;
  font-size: 12px;
  min-width: 70px;
  color: var(--subtext);
}
.timeline-content {
  flex: 1;
}
.timeline-content .name { font-size: 13px; }
.timeline-content .prof { font-size: 11px; color: var(--subtext); }

.action-row {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.action-btn {
  flex: 1;
  padding: 12px;
  border-radius: var(--r-md);
  border: none;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.action-btn.primary {
  background: var(--text);
  color: var(--bg);
}
.action-btn.secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}
.action-btn.in-room {
  background: var(--free-deep);
  color: var(--bg);
}
.action-btn.exit {
  background: var(--warning);
  color: var(--bg);
}
.action-btn svg { width: 16px; height: 16px; }

.friend-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.friend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg);
  border-radius: var(--r-md);
  font-size: 13px;
}
.friend-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}
.friend-name { font-weight: 600; flex: 1; }
.friend-meta { font-size: 11px; color: var(--subtext); }
.friend-icon { width: 16px; height: 16px; color: var(--subtext); }

.empty-mini { font-size: 12px; color: var(--subtext); padding: 8px 4px; }

/* === Picker Sheet === */
.picker-sheet .sheet-body { max-height: 70vh; }
.picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.picker-title { font-size: 17px; font-weight: 700; }
.icon-btn-sm {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--subtext);
}
.icon-btn-sm svg { width: 16px; height: 16px; }
.picker-options {
  padding: 8px 0 20px;
}
.picker-options.grid {
  display: grid;
  gap: 10px;
  padding: 16px 20px 24px;
}
.picker-options.grid-floor {
  grid-template-columns: repeat(4, 1fr);
}
.picker-options.grid-day {
  grid-template-columns: repeat(3, 1fr);
}
.picker-options.grid-period {
  grid-template-columns: repeat(3, 1fr);
}
.picker-opt-tile {
  padding: 16px 12px;
  border-radius: var(--r-md);
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  cursor: pointer;
  transition: transform 100ms;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}
.picker-opt-tile:active { transform: scale(0.96); }
.picker-opt-tile.on {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.picker-opt-tile .sub {
  font-size: 10.5px;
  font-weight: 500;
  opacity: 0.7;
}
.picker-opt-tile[data-kind="free"] {
  background: var(--free);
  border-color: var(--free-deep);
}
.picker-opt-tile[data-kind="free"].on {
  background: var(--free-deep);
  color: var(--bg);
}

/* セミナーリスト型ピッカー (semester / filter など縦並び) */
.picker-opt-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 15px;
}
.picker-opt-row:active { background: var(--bg); }
.picker-opt-row .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--inactive);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.picker-opt-row.on .check {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
}
.picker-opt-row .check svg { width: 14px; height: 14px; opacity: 0; }
.picker-opt-row.on .check svg { opacity: 1; }
.picker-opt-row .label {
  flex: 1;
  font-weight: 500;
}
.picker-opt-row.on .label { font-weight: 700; }
.picker-opt-row .opt-meta {
  font-size: 11.5px;
  color: var(--subtext);
}

/* === Footer Nav === */
.app-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom, 0px));
  z-index: 15;
}
.foot-btn {
  flex: 1;
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 0;
  font-size: 10px;
  color: var(--subtext);
  font-weight: 500;
}
.foot-btn svg { width: 22px; height: 22px; }
.foot-btn.on { color: var(--text); font-weight: 700; }

/* Icons */
[data-icon] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
[data-icon] svg {
  width: 100%;
  height: 100%;
  max-width: 24px;
  max-height: 24px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (min-width: 720px) {
  .app-main { padding: 16px 24px 90px; }
}

/* ============== タブごとのメインビュー ============== */
.app-main[data-tab-content="friends"],
.app-main[data-tab-content="me"] {
  padding: 16px 16px 90px;
}
.page-head { margin-bottom: 16px; }
.page-title { font-size: 22px; font-weight: 700; margin: 0; }
.page-sub { font-size: 12px; color: var(--subtext); margin: 4px 0 0; }

/* 未ログイン状態 */
.auth-gate {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  margin: 12px 0;
}
.auth-gate p { font-size: 13px; color: var(--subtext); margin: 0 0 16px; line-height: 1.6; }
.btn-google {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}

/* マイページ プロフィール */
.me-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
}
.me-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg);
  object-fit: cover;
}
.me-info { flex: 1; min-width: 0; }
.me-displayname { font-size: 15px; font-weight: 700; }
.me-username { font-size: 12px; color: var(--subtext); }
.btn-text {
  background: none;
  border: none;
  color: var(--accent-deep, #5c9fd0);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 8px 12px;
  min-height: 36px;
  border-radius: 6px;
}
.btn-text:active { background: var(--bg); }

/* マイページ セクション (ユーザー名・時間割) */
.me-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}
.me-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}
.me-section-hint { font-size: 11px; color: var(--subtext); margin: 4px 0 0; line-height: 1.5; }

/* 時間割リスト */
.timetable-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
}
.timetable-list li {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bg);
  margin-bottom: 4px;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.timetable-list .empty-state { color: var(--subtext); font-size: 12px; background: none; }

/* 友達タブ */
.follow-add {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.follow-add input {
  flex: 1;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
  font-family: inherit;
}
.follow-add button {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--bg);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}
.friend-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.friend-item {
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.friend-item .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}
.friend-item .name { font-weight: 700; font-size: 14px; }
.friend-item .shared-count { font-size: 12px; color: var(--accent-deep, #5c9fd0); font-weight: 700; }

.auth-loading {
  text-align: center;
  padding: 32px 16px;
  color: var(--subtext);
  font-size: 13px;
}

/* コース検索シート */
.course-picker-sheet .sheet-body { max-height: 85vh; }
.course-search { padding: 12px 16px; border-bottom: 1px solid var(--border); }
.course-search input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 14px;
  font-family: inherit;
}
.course-results {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 60vh;
  overflow-y: auto;
}
.course-results li {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}
.course-results li:active { background: var(--bg); }
.course-results .empty-state { cursor: default; color: var(--subtext); font-size: 12px; padding: 24px 16px; text-align: center; }
.course-name { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.course-meta { font-size: 11px; color: var(--subtext); }
.course-meta .badge {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg);
  border-radius: 4px;
  margin-right: 4px;
  font-weight: 700;
  color: var(--text);
}

/* 時間割アイテム */
.tt-row { display: flex; align-items: center; gap: 8px; }
.tt-slot {
  font-size: 11px;
  font-weight: 700;
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}
.tt-name { font-size: 13px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.tt-room { font-size: 11px; color: var(--subtext); white-space: nowrap; }
.tt-delete {
  background: none;
  border: none;
  color: var(--subtext);
  cursor: pointer;
  padding: 4px 8px;
  font-size: 11px;
}

/* 時間割マトリクス (縦: 時限 / 横: 曜日) */
.timetable-list .empty-state {
  color: var(--subtext);
  font-size: 12px;
  padding: 16px 0;
  text-align: center;
}
.tt-section { margin-top: 14px; }
.tt-section:first-child { margin-top: 8px; }
.tt-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--subtext);
  margin-bottom: 6px;
}
.tt-grid {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 10px;
}
.tt-grid th, .tt-grid td {
  border: 1px solid var(--border);
  text-align: center;
  padding: 0;
}
.tt-grid thead th {
  background: var(--bg);
  font-weight: 700;
  padding: 4px 0;
  font-size: 11px;
}
.tt-grid tbody th {
  background: var(--bg);
  font-weight: 700;
  font-size: 11px;
  width: 22px;
}
.tt-cell {
  height: 56px;
  vertical-align: middle;
  padding: 2px !important;
  position: relative;
  background: var(--card);
}
.tt-cell.tt-filled {
  cursor: pointer;
  font-weight: 700;
}
.tt-cell.tt-empty {
  background: var(--bg);
  cursor: pointer;
}
.tt-cell:active { opacity: 0.7; }
.tt-cell-name {
  font-size: 9.5px;
  line-height: 1.2;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-all;
}
.tt-cell-room {
  font-size: 9px;
  color: var(--subtext);
  margin-top: 2px;
  font-weight: 600;
}

/* コース検索結果の button ラップ (iOS Safari の click 発火対策) */
.course-result-btn {
  width: 100%;
  display: block;
  padding: 12px 16px;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}
.course-result-btn:active { background: var(--bg); }
.course-results li { padding: 0; border-bottom: 1px solid var(--border); }

/* マイページ ユーザー名表示 (変更ボタン横) */
.me-section-head {
  display: flex;
  align-items: center;
  gap: 8px;
}
.me-section-label { flex: 0 0 auto; }
.me-section-value {
  flex: 1;
  font-size: 13px;
  color: var(--text);
  font-weight: 700;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 友達カード */
.friend-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.friend-list .empty-state {
  text-align: center;
  padding: 24px 16px;
  color: var(--subtext);
  font-size: 12px;
}
.friend-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
  cursor: pointer;
  text-align: left;
  width: 100%;
  font-family: inherit;
  color: inherit;
}
.friend-card:active { background: var(--bg); }
.friend-card img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--bg);
  object-fit: cover;
}
.friend-card .fc-info {
  flex: 1;
  min-width: 0;
}
.friend-card .fc-name {
  font-size: 14px;
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.friend-card .fc-username {
  font-size: 11px;
  color: var(--subtext);
}
.friend-card .fc-shared {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-deep);
  flex-shrink: 0;
}

/* 友達詳細シート / セル詳細シート */
.friend-detail, .cell-detail-body {
  padding: 12px 16px;
  max-height: 50vh;
  overflow-y: auto;
}
.fd-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.fd-profile img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg);
}
.fd-name { font-size: 16px; font-weight: 700; }
.fd-username { font-size: 12px; color: var(--subtext); }
.fd-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--subtext);
  letter-spacing: 0.08em;
  margin: 8px 0 6px;
}
.fd-course-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.fd-course-list li {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.fd-course-list li:last-child { border-bottom: none; }
.fd-course-list .badge {
  background: var(--bg);
  font-size: 10.5px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  white-space: nowrap;
}
.fd-course-list .cn {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.fd-course-list .rm {
  font-size: 11px;
  color: var(--subtext);
  white-space: nowrap;
}

/* シート下のアクション ボタン */
.friend-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  flex-direction: column;
}
.btn-primary, .btn-secondary, .btn-danger {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid var(--border);
  cursor: pointer;
  font-family: inherit;
}
.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-secondary {
  background: var(--bg);
  color: var(--text);
}
.btn-danger {
  background: var(--bg);
  color: var(--busy-deep, #c87a7a);
  border-color: var(--busy-deep, #c87a7a);
}
.btn-primary:active, .btn-secondary:active, .btn-danger:active { opacity: 0.7; }

/* 友達のスケジュール表シート */
.friend-tt-body {
  padding: 12px 16px;
  max-height: 75vh;
  overflow-y: auto;
}

/* 友達スケジュール表: 自分も取ってる授業はハイライト */
.tt-cell.tt-shared {
  background: var(--accent, #a5d8ff) !important;
}
.tt-cell.tt-empty-readonly {
  background: var(--bg);
  cursor: default;
}
.tt-cell.tt-empty-readonly:active { opacity: 1; }

/* PWA インストール案内バナー */
.install-banner {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(64px + env(safe-area-inset-bottom, 0px) + 12px);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  z-index: 90;
  font-size: 13px;
  color: var(--text);
}
.install-banner[hidden] { display: none; }
.install-banner-icon {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--free-deep);
}
.install-banner-icon [data-icon] { width: 20px; height: 20px; }
.install-banner-text { flex: 1; line-height: 1.35; }
.install-banner-add {
  flex: 0 0 auto;
  background: var(--accent);
  color: var(--text);
  border: 1px solid var(--accent-deep);
  border-radius: var(--r-md);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.install-banner-add:active { opacity: 0.7; }
.install-banner-close {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  color: var(--subtext);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  border-radius: 8px;
}
.install-banner-close:active { background: var(--bg); }

/* iOS ホーム画面追加の手順シート */
.install-steps {
  margin: 8px 16px 16px;
  padding: 0 0 0 24px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}
.install-steps li { margin-bottom: 6px; }
.install-steps strong { color: var(--accent-deep); }
.install-note {
  margin: 0 16px 20px;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: var(--r-md);
  font-size: 12px;
  color: var(--subtext);
  line-height: 1.5;
}