/* ============================================================================
   GOSTUDY 教育訓練系統 v2 — 設計系統（淺色企業風）
   ============================================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-soft: #eff4ff;
  --bg-page: #f5f7fa;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-faint: #94a3b8;
  --success: #0e9f6e;
  --warning: #d97706;
  --danger: #dc2626;
  /* 課程分類色（與資料庫種子一致） */
  --cat-newcomer: #0e9f6e;
  --cat-general: #2563eb;
  --cat-manager: #7c3aed;
  --cat-pro: #d97706;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, .08);
  --radius: 12px;
}

body {
  font-family: 'Noto Sans TC', -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg-page);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

/* ---------- 登入頁 ---------- */
.login-container {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #f5f7fa 0%, #e8eef7 100%);
  padding: 1rem;
}
.login-box {
  background: var(--bg-card); padding: 2.75rem; border-radius: 16px;
  box-shadow: var(--shadow-md); width: 100%; max-width: 420px;
  border: 1px solid var(--border);
}
.login-box .brand { text-align: center; margin-bottom: 2rem; }
.login-box .brand h1 { font-size: 1.5rem; font-weight: 700; color: var(--text); letter-spacing: .02em; }
.login-box .brand .accent { color: var(--primary); }
.login-box .brand p { color: var(--text-secondary); font-size: .9rem; margin-top: .35rem; }

/* ---------- 表單 ---------- */
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; margin-bottom: .4rem; color: var(--text); font-size: .875rem; font-weight: 500; }
.form-group .hint { font-size: .78rem; color: var(--text-faint); margin-top: .3rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .65rem .9rem; border: 1px solid var(--border-strong);
  border-radius: 8px; background: #fff; color: var(--text); font-size: .95rem;
  font-family: inherit; transition: border-color .15s, box-shadow .15s;
}
.form-group textarea { min-height: 90px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(29, 78, 216, .12);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.checkbox-line { display: flex; align-items: center; gap: .5rem; font-size: .9rem; }
.checkbox-line input { width: auto; }

/* ---------- 按鈕 ---------- */
.btn {
  padding: .6rem 1.25rem; border: 1px solid transparent; border-radius: 8px;
  font-size: .92rem; font-weight: 500; cursor: pointer; font-family: inherit;
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-block { width: 100%; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--bg-subtle); }
.btn-danger { background: #fff; color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: .35rem .75rem; font-size: .82rem; border-radius: 6px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- 版面 ---------- */
.dashboard { display: none; min-height: 100vh; }
.sidebar {
  position: fixed; left: 0; top: 0; width: 240px; height: 100vh;
  background: var(--bg-card); border-right: 1px solid var(--border);
  padding: 1.25rem 1rem; overflow-y: auto; display: flex; flex-direction: column;
}
.sidebar-header { padding: .5rem .75rem 1.25rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.sidebar-header h2 { font-size: 1.05rem; font-weight: 700; }
.sidebar-header h2 .accent { color: var(--primary); }
.sidebar-header p { font-size: .78rem; color: var(--text-faint); margin-top: .15rem; }
.nav-menu { list-style: none; flex: 1; }
.nav-menu li { margin-bottom: .15rem; }
.nav-menu a {
  display: flex; align-items: center; gap: .6rem; padding: .55rem .75rem;
  color: var(--text-secondary); text-decoration: none; border-radius: 8px;
  font-size: .92rem; transition: background .12s, color .12s;
}
.nav-menu a:hover { background: var(--bg-subtle); color: var(--text); }
.nav-menu a.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-section {
  font-size: .72rem; color: var(--text-faint); letter-spacing: .08em;
  margin: 1.1rem 0 .45rem; padding-left: .75rem; font-weight: 600;
}
.user-info {
  display: flex; align-items: center; gap: .7rem; padding: .75rem;
  background: var(--bg-subtle); border-radius: 10px; margin-top: 1rem;
  border: 1px solid var(--border);
}
.user-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--primary);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: .9rem; flex-shrink: 0;
}
.user-details { flex: 1; min-width: 0; }
.user-name { font-weight: 600; font-size: .85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: .74rem; color: var(--text-faint); }
.logout-btn { background: none; border: none; color: var(--text-faint); cursor: pointer; padding: .4rem; border-radius: 6px; font-size: 1rem; }
.logout-btn:hover { color: var(--danger); background: #fef2f2; }

.main-content { margin-left: 240px; padding: 1.75rem 2rem; min-height: 100vh; }
.page { display: none; }
.page.active { display: block; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: .75rem; }
.page-header h1 { font-size: 1.45rem; font-weight: 700; }
.page-header .sub { color: var(--text-secondary); font-size: .9rem; margin-top: .2rem; }

/* 預覽模式橫幅（以使用者角度檢視） */
.preview-banner {
  display: none; position: sticky; top: 0; z-index: 500;
  background: #fffbeb; border-bottom: 1px solid #fde68a; color: #92400e;
  padding: .6rem 2rem; font-size: .9rem; margin: -1.75rem -2rem 1.5rem;
  align-items: center; justify-content: space-between;
}
.preview-banner.active { display: flex; }

/* ---------- 卡片 / 統計 ---------- */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem; margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: .75rem; }
.card-title { font-size: 1.05rem; font-weight: 600; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.3rem; box-shadow: var(--shadow-sm);
}
.stat-value { font-size: 1.7rem; font-weight: 700; }
.stat-label { color: var(--text-secondary); font-size: .82rem; }

/* ---------- 表格 ---------- */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .7rem .9rem; text-align: left; border-bottom: 1px solid var(--border); font-size: .9rem; }
th { color: var(--text-secondary); font-weight: 600; font-size: .78rem; letter-spacing: .04em; background: var(--bg-subtle); }
tbody tr:hover { background: var(--bg-subtle); }

/* ---------- 標籤 ---------- */
.badge { padding: .18rem .65rem; border-radius: 999px; font-size: .74rem; font-weight: 600; white-space: nowrap; }
.badge-success { background: #e7f7f0; color: var(--success); }
.badge-warning { background: #fdf3e3; color: var(--warning); }
.badge-danger  { background: #fdeaea; color: var(--danger); }
.badge-info    { background: var(--primary-soft); color: var(--primary); }
.badge-neutral { background: #f1f5f9; color: var(--text-secondary); }
.badge-cat-新人訓練 { background: #e7f7f0; color: var(--cat-newcomer); }
.badge-cat-一般訓練 { background: #e8effd; color: var(--cat-general); }
.badge-cat-主管訓練 { background: #f1eafd; color: var(--cat-manager); }
.badge-cat-專業訓練 { background: #fdf3e3; color: var(--cat-pro); }

/* ---------- 規章查詢 AI（對話視窗風格） ---------- */
.chat-window {
  max-width: 640px; margin: 0 auto; background: #fff;
  border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow-md); overflow: hidden;
}
.chat-header { display: flex; gap: .7rem; align-items: center; padding: 1rem 1.25rem; background: var(--primary); color: #fff; }
.chat-avatar {
  width: 42px; height: 42px; border-radius: 50%; background: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem; flex-shrink: 0;
}
.chat-header .name { font-weight: 700; }
.chat-header .status { font-size: .76rem; opacity: .85; }
.chat-body { padding: 1.25rem; background: var(--bg-subtle); min-height: 260px; display: flex; flex-direction: column; gap: .7rem; }
.chat-bubble {
  max-width: 88%; padding: .7rem 1rem; border-radius: 14px;
  font-size: .92rem; line-height: 1.65; background: #fff;
  border: 1px solid var(--border); border-top-left-radius: 4px; align-self: flex-start;
}
.chat-chips { display: flex; flex-wrap: wrap; gap: .3rem; align-self: flex-start; }
.chat-chip {
  border: 1px solid var(--primary); color: var(--primary); border-radius: 999px;
  padding: .3rem .85rem; font-size: .84rem; cursor: pointer; background: #fff; font-family: inherit;
}
.chat-chip:hover { background: var(--primary-soft); }
.chat-input-bar { display: flex; gap: .6rem; align-items: center; padding: .9rem 1.1rem; border-top: 1px solid var(--border); background: #fff; cursor: pointer; }
.chat-input-bar:hover .chat-input-fake { border-color: var(--primary); }
.chat-input-fake {
  flex: 1; border: 1px solid var(--border-strong); border-radius: 999px;
  padding: .6rem 1.1rem; color: var(--text-faint); font-size: .92rem; background: var(--bg-subtle);
}

/* ---------- 首頁雙欄版面 ---------- */
.home-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1.25rem; align-items: start; }
.side-card { padding: 1rem 1.1rem; cursor: default; }
.side-card.clickable { cursor: pointer; transition: border-color .15s; }
.side-card.clickable:hover { border-color: var(--primary); }
.side-title { font-size: .92rem; font-weight: 700; margin-bottom: .5rem; display: flex; justify-content: space-between; align-items: center; }
.side-num { font-size: 1.35rem; font-weight: 700; }
.side-row { display: flex; align-items: center; gap: .45rem; font-size: .84rem; padding: .3rem 0; border-top: 1px solid var(--border); }
.side-row:first-of-type { border-top: none; }
.attention-banner { border-radius: var(--radius); padding: .8rem 1.2rem; margin-bottom: 1.25rem; font-size: .95rem; border: 1px solid; }
.attention-banner.warn { background: #fff7ed; border-color: #fed7aa; color: #9a3412; }
.attention-banner.ok { background: #f0fdf6; border-color: #bbe8cd; color: #166534; }
@media (max-width: 1100px) { .home-grid { grid-template-columns: 1fr; } }

/* ---------- 月曆 ---------- */
.calendar-toolbar { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.calendar-toolbar h2 { font-size: 1.15rem; font-weight: 700; min-width: 130px; text-align: center; }
.calendar-legend { display: flex; gap: 1rem; margin-left: auto; flex-wrap: wrap; font-size: .8rem; color: var(--text-secondary); }
.calendar-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: .35rem; }
.calendar-grid {
  display: grid; grid-template-columns: repeat(7, 1fr);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--border); gap: 1px;
}
.calendar-dow { background: var(--bg-subtle); padding: .5rem; text-align: center; font-size: .78rem; font-weight: 600; color: var(--text-secondary); }
.calendar-cell { background: #fff; min-height: 96px; padding: .35rem .4rem; font-size: .8rem; }
.calendar-cell.other-month { background: var(--bg-subtle); }
.calendar-cell .day-no { font-size: .78rem; color: var(--text-faint); font-weight: 600; margin-bottom: .25rem; }
.calendar-cell.today .day-no {
  color: #fff; background: var(--primary); border-radius: 50%;
  width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center;
}
.cal-event {
  display: block; padding: .15rem .4rem; margin-bottom: .2rem; border-radius: 5px;
  font-size: .74rem; font-weight: 500; cursor: pointer; color: #fff;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border: none; width: 100%; text-align: left;
  font-family: inherit;
}
.cal-event.done { opacity: .55; text-decoration: line-through; }

/* ---------- 課程列表卡 ---------- */
.course-item {
  display: flex; gap: 1rem; align-items: flex-start; padding: .9rem 0;
  border-bottom: 1px solid var(--border);
}
.course-item:last-child { border-bottom: none; }
.course-item .date-box {
  min-width: 58px; text-align: center; background: var(--bg-subtle);
  border: 1px solid var(--border); border-radius: 10px; padding: .4rem .3rem; flex-shrink: 0;
}
.course-item .date-box .m { font-size: .7rem; color: var(--text-faint); }
.course-item .date-box .d { font-size: 1.25rem; font-weight: 700; line-height: 1.2; }
.course-item .info { flex: 1; min-width: 0; }
.course-item .title { font-weight: 600; cursor: pointer; }
.course-item .title:hover { color: var(--primary); }
.course-item .meta { font-size: .82rem; color: var(--text-secondary); margin-top: .15rem; }

/* ---------- 進度條 ---------- */
.progress-bar {
  width: 100%; max-width: 160px; height: 8px; background: #eef2f7;
  border-radius: 4px; overflow: hidden; display: inline-block; vertical-align: middle;
}
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--success)); border-radius: 4px; }
.detail-row td { background: var(--bg-subtle); padding: .5rem 1.5rem; }
.chev { display: inline-block; color: var(--text-faint); transition: transform .15s; margin-right: .3rem; font-size: .8rem; }
tr.open .chev { transform: rotate(90deg); }
.nav-badge {
  background: var(--danger); color: #fff; border-radius: 999px;
  font-size: .7rem; font-weight: 700; padding: .05rem .45rem; margin-left: auto;
}

/* ---------- Modal ---------- */
.modal {
  display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, .45);
  z-index: 1000; align-items: flex-start; justify-content: center; padding: 3rem 1rem; overflow-y: auto;
}
.modal.active { display: flex; }
.modal-content {
  background: #fff; border-radius: 14px; padding: 1.75rem; width: 100%;
  max-width: 560px; box-shadow: var(--shadow-md);
  overflow-wrap: anywhere; /* 長網址/NAS 路徑自動換行，不撐破視窗 */
}
.modal-content.wide { max-width: 760px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.25rem; }
.modal-header h2 { font-size: 1.15rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-faint); font-size: 1.4rem; cursor: pointer; line-height: 1; }
.modal-footer { display: flex; justify-content: flex-end; gap: .75rem; margin-top: 1.5rem; }

/* ---------- 其他 ---------- */
.toolbar { display: flex; gap: .75rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.search-input, .filter-select {
  padding: .55rem .9rem; border: 1px solid var(--border-strong); border-radius: 8px;
  background: #fff; color: var(--text); font-size: .9rem; font-family: inherit;
}
.search-input { flex: 1; min-width: 180px; }
.alert { padding: .8rem 1.1rem; border-radius: 8px; margin-bottom: 1rem; font-size: .9rem; }
.alert-success { background: #e7f7f0; border: 1px solid #b7e4d0; color: #065f46; }
.alert-danger  { background: #fdeaea; border: 1px solid #f5c2c2; color: #991b1b; }
.empty-state { text-align: center; padding: 2.5rem; color: var(--text-faint); }
.loading { display: flex; align-items: center; justify-content: center; padding: 2rem; }
.spinner {
  width: 34px; height: 34px; border: 3px solid var(--border);
  border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }
.dept-checkboxes {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .3rem;
  border: 1px solid var(--border); border-radius: 8px; padding: .7rem; background: var(--bg-subtle);
}
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: .7rem 1.4rem; border-radius: 10px;
  font-size: .9rem; z-index: 2000; box-shadow: var(--shadow-md); display: none;
}
.toast.active { display: block; }

@media (max-width: 900px) {
  .sidebar { position: static; width: 100%; height: auto; }
  .main-content { margin-left: 0; padding: 1rem; }
  .preview-banner { margin: -1rem -1rem 1rem; padding: .6rem 1rem; }
  .form-row { grid-template-columns: 1fr; }
}