/* =========================================================
   learning-support app.css
   手機優先 RWD；配色由「首頁設定」Sheet 動態控制（CSS 變數）
   ========================================================= */

:root {
  --primary: #E89B66;
  --secondary: #8EAD8A;
  --bg: #FFF9F2;
  --text: #4A403A;
  --card: #FFFFFF;
  --border: #EADFD4;
  --danger: #C96A5A;
  --success: #5B9A6B;
  --warning: #D9A441;
  --info: #5B87A8;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(74, 64, 58, 0.08);
  --font: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { line-height: 1.3; }

/* ── 通用元件 ─────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 22px; border: none; border-radius: 10px;
  background: var(--primary); color: #fff; font-size: 16px; font-weight: 600;
  cursor: pointer; transition: opacity .15s, transform .1s; font-family: inherit;
}
.btn:hover { opacity: .9; }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-secondary { background: var(--secondary); }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn-lg { padding: 15px 26px; font-size: 17px; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px;
}

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge-success { background: rgba(91,154,107,.15); color: var(--success); }
.badge-warning { background: rgba(217,164,65,.15); color: var(--warning); }
.badge-danger { background: rgba(201,106,90,.15); color: var(--danger); }
.badge-info { background: rgba(91,135,168,.15); color: var(--info); }
.badge-muted { background: rgba(74,64,58,.08); color: var(--text); }

.toast {
  position: fixed; top: 18px; left: 50%; transform: translateX(-50%) translateY(-20px);
  background: var(--text); color: #fff; padding: 12px 22px; border-radius: 10px;
  font-size: 15px; z-index: 2000; opacity: 0; transition: all .25s;
  max-width: 90vw; box-shadow: 0 4px 16px rgba(0,0,0,.2);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

.spinner {
  display: inline-block; width: 20px; height: 20px; border: 3px solid rgba(255,255,255,.4);
  border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-box { text-align: center; padding: 48px 0; color: var(--text); opacity: .7; }
.loading-box .spinner { border-color: rgba(74,64,58,.2); border-top-color: var(--primary); }

.hidden { display: none !important; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input[type="text"], .field input[type="password"], .field input[type="email"],
.field input[type="number"], .field input[type="date"], .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1.5px solid var(--border);
  border-radius: 9px; font-size: 15px; font-family: inherit; background: #fff; color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,155,102,.15);
}
.field .hint { font-size: 12px; opacity: .7; margin-top: 4px; }
.field.checkbox-field { display: flex; align-items: center; gap: 8px; }
.field.checkbox-field label { margin: 0; font-weight: 500; }
.field.checkbox-field input { width: 18px; height: 18px; }

/* ── 首頁（landing）──────────────────────── */
.landing { min-height: 100vh; display: flex; flex-direction: column; }
.landing-header { padding: 18px 20px; display: flex; align-items: center; gap: 12px; }
.landing-header .logo-img { height: 44px; width: auto; }
.landing-hero {
  text-align: center; padding: 60px 20px 30px;
}
.landing-hero h1 { font-size: 30px; margin-bottom: 10px; }
.landing-hero p { font-size: 17px; opacity: .8; }
.landing-entries {
  flex: 1; display: flex; flex-wrap: wrap; gap: 26px;
  justify-content: center; align-items: stretch; padding: 30px 20px 50px;
  max-width: 920px; margin: 0 auto; width: 100%;
}
.entry-card {
  flex: 1 1 340px; max-width: 420px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px 30px;
  display: flex; flex-direction: column; text-align: center;
}
.entry-card .entry-icon { font-size: 46px; margin-bottom: 14px; }
.entry-card h2 { font-size: 22px; margin-bottom: 10px; }
.entry-card p { font-size: 15px; opacity: .85; margin-bottom: 26px; flex: 1; }
.landing-footer { text-align: center; padding: 22px; font-size: 13px; opacity: .6; }

/* ── 填報（student）──────────────────────── */
.student-page { max-width: 620px; margin: 0 auto; padding: 20px 16px 60px; }
.student-page header { text-align: center; padding: 22px 0 18px; }
.student-page header h1 { font-size: 24px; }
.student-page header .school { opacity: .75; font-size: 14px; }
.school-chip { text-align: center; margin: 14px 0; }
.school-chip span {
  display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 14px;
  background: rgba(142,173,138,.18); color: var(--secondary); font-weight: 600;
}

.participate-options { display: grid; gap: 12px; margin: 8px 0 6px; }
.participate-option {
  border: 2px solid var(--border); border-radius: 12px; padding: 16px;
  cursor: pointer; display: flex; align-items: center; gap: 12px; background: var(--card);
  transition: border-color .15s, background .15s;
}
.participate-option:hover { border-color: var(--primary); }
.participate-option.selected { border-color: var(--primary); background: rgba(232,155,102,.08); }
.participate-option input { width: 20px; height: 20px; accent-color: var(--primary); }
.participate-option .opt-title { font-weight: 700; }
.participate-option .opt-desc { font-size: 13px; opacity: .75; }

.subject-card { margin-bottom: 18px; }
.subject-card .subject-head {
  display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px;
  padding: 12px 4px 8px;
}
.slot-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 480px) { .slot-grid { grid-template-columns: 1fr 1fr; } }
.slot-option {
  border: 2px solid var(--border); border-radius: 11px; padding: 12px 14px;
  display: flex; align-items: center; gap: 10px; cursor: pointer; background: var(--card);
  transition: border-color .15s, background .15s;
}
.slot-option:hover { border-color: var(--secondary); }
.slot-option.checked { border-color: var(--secondary); background: rgba(142,173,138,.12); }
.slot-option input { width: 18px; height: 18px; accent-color: var(--secondary); flex: 0 0 auto; }
.slot-option .slot-label { font-size: 15px; }

.form-actions { margin-top: 26px; display: grid; gap: 12px; }
.form-actions .btn { padding: 15px; font-size: 17px; }

.alert { padding: 13px 16px; border-radius: 10px; margin: 14px 0; font-size: 15px; }
.alert-info { background: rgba(91,135,168,.12); color: var(--info); }
.alert-warning { background: rgba(217,164,65,.14); color: #8a6210; }
.alert-success { background: rgba(91,154,107,.14); color: var(--success); }
.alert-error { background: rgba(201,106,90,.13); color: var(--danger); }

.success-screen { text-align: center; padding: 40px 10px; }
.success-screen .success-icon {
  width: 88px; height: 88px; margin: 0 auto 20px; border-radius: 50%;
  background: var(--success); color: #fff; font-size: 44px; line-height: 88px;
}
.student-summary { margin: 18px 0; text-align: center; }
.student-summary .name { font-size: 22px; font-weight: 700; }
.student-summary .meta { opacity: .75; margin-top: 4px; }

/* ── 工作區（workspace）──────────────────── */
.workspace { min-height: 100vh; }
.topbar {
  background: var(--card); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px; padding: 12px 18px;
  position: sticky; top: 0; z-index: 100;
}
.topbar .brand { font-weight: 700; font-size: 17px; }
.topbar .spacer { flex: 1; }
.topbar .user-info { font-size: 13px; opacity: .85; text-align: right; }
.topbar .btn { padding: 8px 13px; font-size: 13px; }

.app-body { display: flex; align-items: flex-start; }
.sidebar {
  width: 236px; background: var(--card); border-right: 1px solid var(--border);
  min-height: calc(100vh - 60px); position: sticky; top: 60px; overflow-y: auto;
  padding: 14px 10px; flex: 0 0 236px;
}
.sidebar-group { margin-bottom: 6px; }
.sidebar-group .group-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  opacity: .55; padding: 10px 12px 4px; font-weight: 700;
}
.sidebar-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  border-radius: 9px; cursor: pointer; font-size: 15px; color: var(--text);
  border: none; background: transparent; width: 100%; text-align: left; font-family: inherit;
}
.sidebar-item:hover { background: var(--bg); }
.sidebar-item.active { background: rgba(232,155,102,.14); color: var(--primary); font-weight: 600; }
.sidebar-item .icon { width: 22px; text-align: center; }

.main { flex: 1; padding: 24px 20px 60px; min-width: 0; }
.page-head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head h2 { font-size: 22px; }
.page-head .spacer { flex: 1; }
.page-head .sub { font-size: 14px; opacity: .7; width: 100%; }

@media (max-width: 768px) {
  .app-body { flex-direction: column; }
  .sidebar {
    width: 100%; flex: none; position: static; min-height: 0;
    display: flex; flex-wrap: wrap; gap: 4px; border-right: none;
    border-bottom: 1px solid var(--border); padding: 8px;
  }
  .sidebar-group { width: 100%; }
  .sidebar-group .group-title { padding: 8px 8px 2px; }
  .sidebar-item { width: auto; }
  .main { padding: 18px 14px 50px; }
  .topbar .user-info { display: none; }
}

/* ── 表格 ───────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
table.tbl th, table.tbl td { padding: 11px 13px; text-align: left; border-bottom: 1px solid var(--border); }
table.tbl th { background: var(--bg); font-weight: 700; white-space: nowrap; }
table.tbl tbody tr:hover { background: rgba(232,155,102,.05); }
table.tbl tbody tr:last-child td { border-bottom: none; }
.tbl-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── 統計卡片（dashboard）────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; }
.stat-card .stat-num { font-size: 30px; font-weight: 800; }
.stat-card .stat-label { font-size: 13px; opacity: .75; margin-top: 2px; }
.stat-card.accent { border-color: var(--primary); }
.stat-card.success { border-color: var(--success); }
.stat-card.warn { border-color: var(--warning); }
.stat-card.danger { border-color: var(--danger); }

/* ── Modal ──────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(40,34,30,.45); z-index: 500;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 30px 16px; overflow-y: auto;
}
.modal {
  background: var(--card); border-radius: var(--radius); width: 100%;
  max-width: 520px; box-shadow: 0 8px 40px rgba(0,0,0,.18); padding: 26px;
  animation: pop .18s ease;
}
@keyframes pop { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal.modal-lg { max-width: 760px; }
.modal .modal-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.modal .modal-head h3 { font-size: 19px; flex: 1; }
.modal .modal-close {
  border: none; background: transparent; font-size: 22px; cursor: pointer; color: var(--text); opacity: .6;
}
.modal .modal-body { max-height: 70vh; overflow-y: auto; }
.modal .modal-foot { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* ── 分頁 / 工具列 ──────────────────────── */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.toolbar input[type="text"], .toolbar select {
  padding: 9px 12px; border: 1.5px solid var(--border); border-radius: 9px; font-size: 14px; font-family: inherit;
}
.toolbar .search-input { flex: 1; min-width: 180px; max-width: 320px; }

.pill-row { display: flex; gap: 8px; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px;
  background: var(--bg); border: 1.5px solid var(--border); font-size: 13px; cursor: pointer;
}
.pill.active { border-color: var(--primary); background: rgba(232,155,102,.12); color: var(--primary); font-weight: 600; }

/* ── 教師授課意願表單 ───────────────────── */
.pref-grade-chips { margin-bottom: 18px; }
.pref-subject-card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); margin-bottom: 16px; padding: 16px; }
.pref-subject-card h4 { margin-bottom: 10px; font-size: 16px; }

/* ── 權限矩陣 ───────────────────────────── */
.perm-table th, .perm-table td { text-align: center; }
.perm-table td input { width: 16px; height: 16px; accent-color: var(--primary); }
.perm-table td:first-child, .perm-table th:first-child { text-align: left; }

/* ── Seed 管理 ──────────────────────────── */
.seed-status-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 22px; }
.seed-status-item { border: 1px solid var(--border); border-radius: 11px; padding: 12px 14px; background: var(--card); }
.seed-status-item .name { font-size: 13px; opacity: .7; }
.seed-status-item .val { font-weight: 700; font-size: 16px; }
.seed-actions { display: grid; gap: 14px; }

/* ── 選單分隔 ───────────────────────────── */
.empty-state { text-align: center; padding: 40px 10px; opacity: .6; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

code { background: rgba(74,64,58,.08); padding: 2px 6px; border-radius: 5px; font-size: 13px; }
pre.code-block {
  background: #2d2a26; color: #f2ede6; padding: 16px; border-radius: 10px;
  overflow-x: auto; font-size: 13px; line-height: 1.5;
}