/* ==========================================================================
   Tokyo Hack Group Portal — Design System
   ========================================================================== */

:root {
  --color-bg: #f4f6fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f8f9fc;
  --color-border: #e3e7f0;
  --color-border-strong: #cdd3e1;

  --color-text: #1c2333;
  --color-text-muted: #64708a;
  --color-text-faint: #97a1b8;

  --color-primary: #4b5df8;
  --color-primary-hover: #3948d6;
  --color-primary-soft: #edeffe;
  --color-primary-contrast: #ffffff;

  --color-success: #16a34a;
  --color-success-soft: #e8f8ee;
  --color-warning: #d97706;
  --color-warning-soft: #fef3e2;
  --color-danger: #dc2626;
  --color-danger-soft: #fdecec;
  --color-info: #0891b2;
  --color-info-soft: #e5f7fa;
  --color-neutral-soft: #eef0f5;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(20, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 26, 46, 0.08);
  --shadow-lg: 0 12px 32px rgba(20, 26, 46, 0.14);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  --sidebar-width: 248px;
  --topbar-height: 60px;

  --font-sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Segoe UI", system-ui, -apple-system, sans-serif;
}

/* ---------------------------------------------------------------------- */
/* Reset & base                                                           */
/* ---------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

button, input, select, textarea { font: inherit; color: inherit; }

.h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }
.h2 { font-size: 1.15rem; font-weight: 700; }
.text-muted { color: var(--color-text-muted); }
.text-faint { color: var(--color-text-faint); }
.text-sm { font-size: 0.85rem; }

/* ---------------------------------------------------------------------- */
/* App shell / layout                                                     */
/* ---------------------------------------------------------------------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-5) var(--space-4);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  z-index: 40;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.05rem;
  padding: 0 var(--space-2);
}

.sidebar__brand-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), #7c6bf9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  overflow: hidden;
  flex-shrink: 0;
}
.sidebar__brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar__nav { display: flex; flex-direction: column; gap: var(--space-1); }

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.92rem;
}
.sidebar__link:hover { background: var(--color-surface-muted); text-decoration: none; color: var(--color-text); }
.sidebar__link.is-active { background: var(--color-primary-soft); color: var(--color-primary); }
.sidebar__link-icon { font-size: 1.05rem; width: 1.3em; text-align: center; }

.sidebar__section-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0 var(--space-3);
  margin-bottom: var(--space-1);
}

.sidebar__footer { margin-top: auto; }

.sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.sidebar__user-meta { min-width: 0; }
.sidebar__user-name {
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar__user-role { font-size: 0.75rem; color: var(--color-text-faint); }

.topbar {
  display: none;
  align-items: center;
  gap: var(--space-3);
  height: var(--topbar-height);
  padding: 0 var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar__menu-btn {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  font-size: 1.1rem;
  cursor: pointer;
}

.topbar__title { font-weight: 800; }

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 20, 35, 0.4);
  z-index: 39;
}

.main {
  flex: 1;
  min-width: 0;
  padding: var(--space-6) var(--space-6) var(--space-7);
}

.container { max-width: 1180px; margin: 0 auto; }

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.page-header__title { display: flex; flex-direction: column; gap: var(--space-1); }
.page-header__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

.page-footer {
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-faint);
  font-size: 0.8rem;
}
.page-footer__links { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); }
.page-footer__links a { color: var(--color-text-faint); }
.page-footer__links a:hover { color: var(--color-primary); text-decoration: underline; }

/* ---------------------------------------------------------------------- */
/* Buttons                                                                 */
/* ---------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.55em 1.1em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary { background: var(--color-primary); color: var(--color-primary-contrast); }
.btn-primary:hover { background: var(--color-primary-hover); }

.btn-secondary { background: var(--color-surface); color: var(--color-text); border-color: var(--color-border-strong); }
.btn-secondary:hover { background: var(--color-surface-muted); }

.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-ghost { background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-surface-muted); color: var(--color-text); }

.btn-sm { padding: 0.35em 0.8em; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn-icon { padding: 0.5em; width: 2.2em; height: 2.2em; }

/* ---------------------------------------------------------------------- */
/* Cards                                                                   */
/* ---------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-pad { padding: var(--space-5); }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.card-body { padding: var(--space-5); }

.stat-card { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-card__value { font-size: 1.6rem; font-weight: 800; }
.stat-card__label { color: var(--color-text-muted); font-size: 0.85rem; font-weight: 600; }

.grid { display: grid; gap: var(--space-4); }
.grid-menu { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid-projects { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid-stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* ---------------------------------------------------------------------- */
/* Menu / dashboard cards                                                  */
/* ---------------------------------------------------------------------- */
.menu-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.menu-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); text-decoration: none; }
.menu-card__icon { font-size: 1.6rem; }
.menu-card__title { font-weight: 800; color: var(--color-text); }
.menu-card__desc { color: var(--color-text-muted); font-size: 0.85rem; }

/* ---------------------------------------------------------------------- */
/* Project cards                                                           */
/* ---------------------------------------------------------------------- */
.project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.project-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-2); }
.project-card__title { font-weight: 800; font-size: 1.02rem; }
.project-card__title a { color: var(--color-text); }
.project-card__desc {
  color: var(--color-text-muted);
  font-size: 0.86rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.project-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.project-card__updated { font-size: 0.76rem; color: var(--color-text-faint); }

.favorite-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--color-text-faint);
  padding: var(--space-1);
}
.favorite-btn.is-active { color: var(--color-warning); }

/* ---------------------------------------------------------------------- */
/* Badges                                                                   */
/* ---------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.28em 0.75em;
  border-radius: var(--radius-full);
  font-size: 0.74rem;
  font-weight: 700;
  background: var(--color-neutral-soft);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.badge-primary { background: var(--color-primary-soft); color: var(--color-primary); }
.badge-success { background: var(--color-success-soft); color: var(--color-success); }
.badge-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge-info { background: var(--color-info-soft); color: var(--color-info); }
.badge-neutral { background: var(--color-neutral-soft); color: var(--color-text-muted); }
.badge-dot { width: 0.5em; height: 0.5em; border-radius: 50%; background: currentColor; }

/* ---------------------------------------------------------------------- */
/* Avatars                                                                  */
/* ---------------------------------------------------------------------- */
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.78rem;
  border: 2px solid var(--color-surface);
  flex-shrink: 0;
  overflow: hidden;
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.avatar-sm { width: 24px; height: 24px; font-size: 0.68rem; }
.avatar-lg { width: 72px; height: 72px; font-size: 1.6rem; }
.avatar-upload {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4, 1rem);
}
.avatar-stack { display: flex; }
.avatar-stack .avatar { margin-left: -8px; }
.avatar-stack .avatar:first-child { margin-left: 0; }
.avatar-stack__more {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--color-neutral-soft); color: var(--color-text-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700; margin-left: -8px; border: 2px solid var(--color-surface);
}

/* ---------------------------------------------------------------------- */
/* Tables                                                                   */
/* ---------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.88rem;
}
.table th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
  font-weight: 700;
  background: var(--color-surface-muted);
}
.table tbody tr:hover { background: var(--color-surface-muted); }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr.is-best-candidate { background: var(--color-success-soft); }
.table tbody tr.is-best-candidate td:first-child { font-weight: 800; }
.table .is-you-column { background: var(--color-primary-soft); }
.table td.is-numeric { text-align: right; }
.table .cell-actions { display: flex; gap: var(--space-2); }

.status-dot {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 50%;
  margin-right: var(--space-2);
  vertical-align: middle;
}
.status-dot--online { background: var(--color-success, #22c55e); box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2); }
.status-dot--offline { background: var(--color-text-faint); }

/* 候補×招待者のような行列型テーブルはカード化せず、横スクロールのまま維持する */
.table-wrap--matrix { position: relative; }
.table-wrap--matrix .table { min-width: 480px; }

/* clamp-content（-webkit-box）を含む列があると auto レイアウトの幅計算が崩れ、
   他の列が極端に狭くなる（改行できない日本語が縦一列に折り返される）ため、
   列幅を固定して崩れを防ぐ。 */
.table-wrap--fixed .table { table-layout: fixed; }
.table-wrap--fixed .table th,
.table-wrap--fixed .table td { overflow-wrap: break-word; word-break: break-word; }

/* ---------------------------------------------------------------------- */
/* Forms                                                                    */
/* ---------------------------------------------------------------------- */
.form-group { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-4); }
.form-row { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.form-row > .form-group { flex: 1; min-width: 200px; }

.form-label { font-weight: 700; font-size: 0.85rem; }
.form-hint { color: var(--color-text-faint); font-size: 0.78rem; }

.input, .select, .textarea {
  width: 100%;
  padding: 0.6em 0.85em;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.textarea { resize: vertical; min-height: 90px; }

.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }
.checkbox-list { display: flex; flex-direction: column; gap: var(--space-2); max-height: 200px; overflow-y: auto; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: var(--space-3); }

.switch { position: relative; display: inline-block; width: 42px; height: 24px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch__track {
  position: absolute; inset: 0; background: var(--color-border-strong);
  border-radius: var(--radius-full); transition: background 0.15s ease; cursor: pointer;
}
.switch__track::before {
  content: ""; position: absolute; width: 18px; height: 18px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%; transition: transform 0.15s ease; box-shadow: var(--shadow-sm);
}
.switch input:checked + .switch__track { background: var(--color-primary); }
.switch input:checked + .switch__track::before { transform: translateX(18px); }

/* ---------------------------------------------------------------------- */
/* Filter bar                                                               */
/* ---------------------------------------------------------------------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-end;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.filter-bar .form-group { margin-bottom: 0; min-width: 160px; }
.filter-bar .form-group.grow { flex: 1; min-width: 220px; }

/* ---------------------------------------------------------------------- */
/* Tabs                                                                      */
/* ---------------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.tabs__link {
  padding: var(--space-3) var(--space-1);
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 0.9rem;
}
.tabs__link:hover { text-decoration: none; color: var(--color-text); }
.tabs__link.is-active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ---------------------------------------------------------------------- */
/* Alerts                                                                    */
/* ---------------------------------------------------------------------- */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
}
.alert-success { background: var(--color-success-soft); color: var(--color-success); border-color: rgba(22, 163, 74, 0.25); }
.alert-danger { background: var(--color-danger-soft); color: var(--color-danger); border-color: rgba(220, 38, 38, 0.25); }
.alert-info { background: var(--color-info-soft); color: var(--color-info); border-color: rgba(8, 145, 178, 0.25); }

/* ---------------------------------------------------------------------- */
/* Calendar                                                                  */
/* ---------------------------------------------------------------------- */
.cal-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.cal-nav { display: flex; align-items: center; gap: var(--space-2); }
.cal-period-label { font-weight: 800; margin-left: var(--space-2); }

.cal-month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-border);
  gap: 1px;
}
.cal-month-head {
  background: var(--color-surface-muted);
  padding: var(--space-2);
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-faint);
}
.cal-day-cell {
  background: var(--color-surface);
  min-height: 96px;
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.cal-day-cell.is-outside { background: var(--color-surface-muted); color: var(--color-text-faint); }
.cal-day-cell.is-today .cal-day-number {
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cal-day-number { font-size: 0.8rem; font-weight: 700; margin-bottom: 2px; }

.cal-chip {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2em 0.5em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cal-chip-milestone { background: var(--color-danger-soft); color: var(--color-danger); }
.cal-chip-meeting { background: var(--color-primary-soft); color: var(--color-primary); }
.cal-chip-personal { background: var(--color-warning-soft); color: var(--color-warning); }

.cal-list-group { margin-bottom: var(--space-4); }
.cal-list-date { font-weight: 800; margin-bottom: var(--space-2); }
.cal-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-1);
}
.cal-list-time { font-size: 0.8rem; color: var(--color-text-muted); font-weight: 700; width: 3.5em; flex-shrink: 0; }
.cal-list-title { cursor: pointer; font-weight: 600; flex: 1; min-width: 0; overflow-wrap: break-word; }
.cal-list-title:hover { text-decoration: underline; }

@media (max-width: 700px) {
  .cal-month-grid { grid-template-columns: repeat(7, minmax(36px, 1fr)); font-size: 0.75rem; }
  .cal-day-cell { min-height: 64px; padding: var(--space-1); }
}

/* ---------------------------------------------------------------------- */
/* Comments                                                                  */
/* ---------------------------------------------------------------------- */
.comment-item { display: flex; gap: var(--space-3); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.comment-item:last-child { border-bottom: none; }
.comment-item__body { flex: 1; min-width: 0; }
.comment-item__content { white-space: pre-wrap; margin-top: var(--space-1); }

/* ---------------------------------------------------------------------- */
/* 長文の折り返し・クランプ表示（改行保持 + 「続きを読む」展開）              */
/* ---------------------------------------------------------------------- */
.text-preserve-lines { white-space: pre-wrap; }
.clamp-content {
  white-space: pre-wrap;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.clamp-content.is-expanded {
  -webkit-line-clamp: unset;
  overflow: visible;
}
.clamp-toggle {
  display: inline-block;
  background: none;
  border: none;
  padding: 0;
  margin-top: var(--space-1);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.clamp-toggle:hover { text-decoration: underline; }

.badge-sm { font-size: 0.7rem; padding: 0.15em 0.5em; }

.reaction-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full, 999px);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1.4;
}
.reaction-btn:hover { background: var(--color-surface-muted); }
.reaction-btn.is-active {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}
.reaction-btn__count { font-size: 0.8rem; font-weight: 700; color: var(--color-text-muted); }

/* ---------------------------------------------------------------------- */
/* Markdown rendered content                                                */
/* ---------------------------------------------------------------------- */
.markdown-body { line-height: 1.7; }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin: var(--space-4) 0 var(--space-2); font-weight: 800; }
.markdown-body h1 { font-size: 1.4rem; }
.markdown-body h2 { font-size: 1.2rem; }
.markdown-body h3 { font-size: 1.05rem; }
.markdown-body p { margin: var(--space-2) 0; }
.markdown-body ul, .markdown-body ol { margin: var(--space-2) 0; padding-left: 1.4em; list-style: revert; }
.markdown-body li { margin: 0.2em 0; }
.markdown-body a { color: var(--color-primary); }
.markdown-body code { background: var(--color-surface-muted); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.88em; }
.markdown-body pre { background: var(--color-surface-muted); padding: var(--space-3); border-radius: var(--radius-sm); overflow-x: auto; }
.markdown-body pre code { background: none; padding: 0; }
.markdown-body blockquote { border-left: 3px solid var(--color-border-strong); margin: var(--space-2) 0; padding: 0 var(--space-3); color: var(--color-text-muted); }
.markdown-body table { border-collapse: collapse; margin: var(--space-2) 0; }
.markdown-body th, .markdown-body td { border: 1px solid var(--color-border); padding: var(--space-2); }

/* ---------------------------------------------------------------------- */
/* Empty state                                                              */
/* ---------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: var(--space-7) var(--space-4);
  color: var(--color-text-muted);
}
.empty-state__icon { font-size: 2rem; margin-bottom: var(--space-2); }

/* ---------------------------------------------------------------------- */
/* Pagination                                                               */
/* ---------------------------------------------------------------------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  flex-wrap: wrap;
}
.pagination__link {
  min-width: 34px;
  height: 34px;
  padding: 0 var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 0.85rem;
}
.pagination__link:hover { text-decoration: none; background: var(--color-surface-muted); }
.pagination__link.is-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.pagination__link.is-disabled { opacity: 0.4; pointer-events: none; }

/* ---------------------------------------------------------------------- */
/* Modal                                                                     */
/* ---------------------------------------------------------------------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 20, 35, 0.45);
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  z-index: 100;
}
.modal-overlay.is-open { display: flex; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-5) var(--space-3);
}
.modal__title { font-weight: 800; font-size: 1.1rem; }
.modal__close { background: none; border: none; font-size: 1.3rem; cursor: pointer; color: var(--color-text-faint); line-height: 1; }
.modal__body { padding: 0 var(--space-5) var(--space-5); }
.modal__footer { display: flex; justify-content: flex-end; gap: var(--space-2); padding: var(--space-4) var(--space-5); border-top: 1px solid var(--color-border); }

/* ---------------------------------------------------------------------- */
/* Auth (login) shell                                                       */
/* ---------------------------------------------------------------------- */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top left, #6577fb 0%, #4b5df8 45%, #2f3bc9 100%);
  padding: var(--space-4);
}
.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6) var(--space-5);
}
.auth-brand { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); margin-bottom: var(--space-5); text-align: center; }

/* ---------------------------------------------------------------------- */
/* Utilities                                                                 */
/* ---------------------------------------------------------------------- */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mb-0 { margin-bottom: 0; }
.wrap { flex-wrap: wrap; }
.w-full { width: 100%; }
.text-center { text-align: center; }

/* ---------------------------------------------------------------------- */
/* Responsive                                                               */
/* ---------------------------------------------------------------------- */
@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar-backdrop.is-open { display: block; }
  .topbar { display: flex; }
  .main { padding: var(--space-4); }
  .page-header { flex-direction: column; align-items: stretch; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar .form-group { min-width: 0; }
}

@media (max-width: 560px) {
  .grid-projects, .grid-menu, .grid-2 { grid-template-columns: 1fr; }
  .card-pad, .card-body { padding: var(--space-4); }
}

@media (max-width: 480px) {
  .modal-overlay { padding: var(--space-2); }
  .modal__header, .modal__body, .modal__footer {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
  .modal__header { padding-top: var(--space-4); }
  .modal__body { padding-bottom: var(--space-4); }
  .form-row > .form-group { min-width: 100%; }
}

/* ---------------------------------------------------------------------- */
/* Responsive tables — カード型リストへの変換                              */
/* 対象の <td> には data-label="列名" を付与しておくこと。                  */
/* 候補×招待者の行列表（.table-wrap--matrix）は対象外とし、横スクロールを維持。 */
/* ---------------------------------------------------------------------- */
@media (max-width: 700px) {
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) {
    overflow-x: visible;
    background: transparent;
    border: none;
    box-shadow: none;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table {
    display: block;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table thead {
    display: none;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table tbody {
    display: block;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table tbody tr {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-3);
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table tbody tr:last-child {
    margin-bottom: 0;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table td {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    border-bottom: 1px dashed var(--color-border);
    text-align: right;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table td:last-child {
    border-bottom: none;
  }
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table td[data-label]::before {
    content: attr(data-label);
    font-weight: 700;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-faint);
    text-align: left;
    flex-shrink: 0;
  }
  /* 値側が長文・複数行になりうるセル（本文・詳細等）は縦積みに切り替える */
  .table-wrap:not(.table-wrap--matrix):not(.table-wrap--keyvalue) .table td.cell-stack {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }
}