/* ============================================
   Skills 代開平台 — main.css
   簡潔、響應式、無障礙基本款
   ============================================ */

:root {
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --border: #e1e4e8;
  --border-strong: #cbd2d9;
  --text: #1f2937;
  --text-muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #dbeafe;
  --success: #16a34a;
  --success-soft: #dcfce7;
  --warning: #d97706;
  --warning-soft: #fef3c7;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --info: #0891b2;
  --info-soft: #cffafe;
  --muted: #9ca3af;
  --muted-soft: #f3f4f6;
  --code-bg: #f3f4f6;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.06);
  --radius: 6px;
  --radius-lg: 10px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
    "Noto Sans TC", "Microsoft JhengHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4 { margin: 0 0 12px; font-weight: 600; line-height: 1.3; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }
p { margin: 0 0 12px; }

code, pre, .mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-size: 12.5px; }

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px;
}

.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.mainnav {
  display: flex;
  gap: 4px;
  margin-left: 16px;
  flex: 1;
  flex-wrap: wrap;
}
.mainnav a {
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-weight: 500;
}
.mainnav a:hover { background: var(--muted-soft); text-decoration: none; }
.mainnav a.active { color: var(--primary); background: var(--primary-soft); }
.mainnav a.admin-link { color: var(--warning); }
.mainnav a.admin-link.active { color: white; background: var(--warning); }

.usermenu {
  display: flex;
  align-items: center;
  gap: 12px;
}
.user-email {
  color: var(--text-muted);
  font-size: 13px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inline-form { display: inline; margin: 0; padding: 0; }

.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  padding: 16px 0;
  margin-top: 40px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer .container { padding: 0 20px; display: flex; gap: 8px; align-items: center; }
.footer-sep { color: var(--border-strong); }
.footer-muted { color: var(--muted); }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  text-decoration: none;
  font-family: inherit;
  line-height: 1.2;
}
.btn:hover { text-decoration: none; }
.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}

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

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

.btn-warn {
  background: var(--warning);
  color: white;
  border-color: var(--warning);
}

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

.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-lg { padding: 12px 20px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }

/* ============================================
   Forms
   ============================================ */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  max-width: 480px;
  margin: 24px auto;
}
.form-card h1 { margin-top: 0; }
.form-card .form-footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.field { margin-bottom: 16px; }
.field label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: 13px;
  color: var(--text);
}
.field .hint {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="number"],
.field input[type="url"],
.field input[type="search"],
.field select,
.field textarea {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.field textarea { min-height: 80px; resize: vertical; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* ============================================
   Card / Panel
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}
.card-header h2, .card-header h1 { margin: 0; }
.card-footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================
   Table
   ============================================ */
.table-wrap { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.table th, .table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  vertical-align: middle;
}
.table th {
  background: var(--muted-soft);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.table tbody tr:hover { background: var(--muted-soft); }
.table tbody tr:last-child td { border-bottom: 0; }
.table .actions { text-align: right; white-space: nowrap; }
.table .actions form { display: inline; }
.table .mono { font-size: 12px; }

.empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
}

/* ============================================
   Badges
   ============================================ */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: var(--muted-soft);
  color: var(--text-muted);
  white-space: nowrap;
}
.badge.ok { background: var(--success-soft); color: var(--success); }
.badge.info { background: var(--info-soft); color: var(--info); }
.badge.warn { background: var(--warning-soft); color: var(--warning); }
.badge.err { background: var(--danger-soft); color: var(--danger); }
.badge.muted { background: var(--muted-soft); color: var(--muted); }

/* ============================================
   Flash messages
   ============================================ */
.flash {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid;
  font-size: 14px;
}
.flash-info { background: var(--info-soft); border-color: var(--info); color: var(--info); }
.flash-warn { background: var(--warning-soft); border-color: var(--warning); color: var(--warning); }
.flash-err  { background: var(--danger-soft);  border-color: var(--danger);  color: var(--danger); }
.flash a { color: inherit; font-weight: 600; text-decoration: underline; }

/* ============================================
   Filter bar
   ============================================ */
.filterbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  align-items: center;
}
.filterbar form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filterbar select, .filterbar input {
  padding: 6px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 13px;
}
.filterbar label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================
   Secret field（顯示/隱藏密碼用）
   ============================================ */
.secret-row {
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--code-bg);
}
.secret-row .secret-text {
  flex: 1;
  padding: 8px 10px;
  font-family: ui-monospace, monospace;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.secret-row .secret-text.masked { letter-spacing: 0.1em; }
.secret-row button {
  padding: 0 12px;
  border: 0;
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  border-left: 1px solid var(--border-strong);
  font-size: 13px;
}
.secret-row button:hover { background: var(--muted-soft); color: var(--text); }

/* ============================================
   Detail rows
   ============================================ */
.detail-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
}
.detail-grid dt {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}
.detail-grid dd {
  margin: 0;
  word-break: break-word;
}
@media (max-width: 640px) {
  .detail-grid { grid-template-columns: 1fr; gap: 4px 0; }
  .detail-grid dt { margin-top: 8px; }
}

/* ============================================
   Stats grid
   ============================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}
.stat .stat-label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat .stat-value { font-size: 28px; font-weight: 600; margin-top: 4px; line-height: 1.1; }
.stat .stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ============================================
   Admin tabs
   ============================================ */
.tabbar {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
  overflow-x: auto;
  flex-wrap: nowrap;
}
.tabbar a {
  padding: 10px 16px;
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
}
.tabbar a:hover { color: var(--text); text-decoration: none; }
.tabbar a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ============================================
   Auth pages
   ============================================ */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}
.auth-page .topbar { position: relative; }
.auth-page main { flex: 1; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-page .form-card { margin: 0; }

/* ============================================
   Message thread (ticket)
   ============================================ */
.thread { display: flex; flex-direction: column; gap: 12px; }
.msg {
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.msg-user { border-left: 3px solid var(--primary); }
.msg-ai { border-left: 3px solid var(--info); background: var(--info-soft); }
.msg-admin { border-left: 3px solid var(--success); background: var(--success-soft); }
.msg .msg-meta { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.msg .msg-meta .sender { font-weight: 600; color: var(--text); }
.msg .msg-body { white-space: pre-wrap; word-break: break-word; }

/* ============================================
   Service form (dynamic fields)
   ============================================ */
.skill-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  background: var(--bg-card);
  cursor: pointer;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.skill-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.skill-card.selected { border-color: var(--primary); background: var(--primary-soft); }
.skill-card h3 { margin: 0 0 4px; }
.skill-card p { margin: 0; color: var(--text-muted); font-size: 13px; }

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

/* ============================================
   Utility
   ============================================ */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-muted { color: var(--text-muted); }
.text-mono { font-family: ui-monospace, monospace; font-size: 13px; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.flex { display: flex; gap: 8px; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.hidden { display: none !important; }