/* ============================================================
   青松网球教务系统 — 高级简约克制设计
   ============================================================ */
:root {
  --bg: #f5f6f8; --surface: #fff; --border: #e2e4e8;
  --text: #1a1a2e; --text-secondary: #6b7280;
  --primary: #2d6a4f; --primary-light: #40916c; --primary-bg: #d8f3dc;
  --gold: #fff3cd; --gold-border: #ffc107;
  --danger: #dc3545; --danger-bg: #ffe0e0;
  --green: #28a745; --green-bg: #d4edda;
  --yellow: #f0ad4e; --yellow-bg: #fff8e1;
  --red: #dc3545; --red-bg: #f8d7da;
  --radius: 8px; --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06); --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --font: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:var(--font); background:var(--bg); color:var(--text); line-height:1.5; -webkit-font-smoothing:antialiased; }

/* Login */
.login-container { max-width:400px; margin:120px auto; text-align:center; }
.login-logo { margin-bottom:32px; }
.login-logo .logo-icon { font-size:56px; margin-bottom:8px; }
.login-logo h1 { font-size:28px; font-weight:600; color:var(--primary); letter-spacing:2px; }
.login-logo p { font-size:14px; color:var(--text-secondary); margin-top:4px; }
.login-form { background:var(--surface); padding:32px; border-radius:var(--radius); box-shadow:var(--shadow-md); }
.login-form .input { margin-bottom:16px; text-align:center; font-size:18px; letter-spacing:4px; }

/* Layout */

#page-main { display:flex; min-height:100vh; }
.sidebar { width:190px; background:var(--surface); border-right:1px solid var(--border); display:flex; flex-direction:column; position:fixed; top:0; left:0; bottom:0; z-index:100; }
.sidebar-header { padding:16px 12px; border-bottom:1px solid var(--border); text-align:center; }
.sidebar-logo { font-size:24px; }
.sidebar-title { font-size:14px; font-weight:600; color:var(--primary); margin-top:2px; }
.nav-list { list-style:none; flex:1; padding:4px 0; }
.nav-item { padding:9px 14px; cursor:pointer; font-size:13px; color:var(--text-secondary); transition:.15s; border-left:3px solid transparent; margin:1px 0; display:flex; align-items:center; }
.nav-item:hover { background:var(--bg); color:var(--text); }
.nav-item.active { background:var(--primary-bg); color:var(--primary); border-left-color:var(--primary); font-weight:500; }
.nav-icon { margin-right:8px; font-size:15px; }
.sidebar-footer { padding:10px 14px; border-top:1px solid var(--border); display:flex; justify-content:space-between; font-size:12px; }
.action-link { cursor:pointer; color:var(--text-secondary); }
.action-link:hover { color:var(--primary); }
.main-content { margin-left:190px; flex:1; padding:20px 28px; max-width:1300px; }

/* Common */
.page-header { display:flex; align-items:baseline; gap:10px; margin-bottom:16px; flex-wrap:wrap; }
.page-header h2 { font-size:20px; font-weight:600; }
.page-subtitle { font-size:12px; color:var(--text-secondary); }
.header-actions { display:flex; gap:6px; margin-left:auto; }
.card { background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow); padding:20px; margin-bottom:14px; }
.input, select, textarea { width:100%; padding:8px 10px; border:1px solid var(--border); border-radius:var(--radius-sm); font-size:13px; font-family:var(--font); background:var(--surface); }
.input:focus, select:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-bg); }
.input-sm { width:140px; }
.input[readonly] { background:var(--bg); color:var(--text-secondary); }
small { font-size:11px; color:var(--text-secondary); }

.btn { padding:7px 14px; border:1px solid var(--border); border-radius:var(--radius-sm); font-size:13px; cursor:pointer; background:var(--surface); font-family:var(--font); white-space:nowrap; transition:.15s; }
.btn:hover { background:var(--bg); }
.btn-primary { background:var(--primary); color:#fff; border-color:var(--primary); }
.btn-primary:hover { background:var(--primary-light); }
.btn-danger { background:var(--danger); color:#fff; border-color:var(--danger); }
.btn-danger:hover { background:#c82333; }
.btn-outline { border-color:var(--primary); color:var(--primary); }
.btn-outline:hover { background:var(--primary-bg); }
.btn-sm { padding:4px 8px; font-size:11px; }
.btn-lg { padding:10px 24px; font-size:15px; font-weight:500; }
.btn-block { width:100%; }
.btn-xs { padding:2px 6px; font-size:10px; border-radius:2px; }

.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.form-group { display:flex; flex-direction:column; gap:3px; }
.form-group label { font-size:12px; font-weight:500; color:var(--text-secondary); }
.form-group .required { color:var(--danger); }
.span-2 { grid-column:span 2; }
.form-inline { display:flex; gap:6px; align-items:center; flex-wrap:wrap; }
.form-actions { display:flex; gap:8px; justify-content:flex-end; margin-top:14px; }
.filter-bar { display:flex; gap:6px; align-items:center; flex-wrap:wrap; margin-bottom:14px; }

.tag-list { display:flex; flex-wrap:wrap; gap:5px; margin-top:5px; }
.tag { display:inline-flex; align-items:center; gap:3px; padding:3px 10px; background:var(--primary-bg); color:var(--primary); border-radius:12px; font-size:12px; }
.tag .tag-remove { cursor:pointer; font-size:15px; opacity:0.5; line-height:1; }
.tag .tag-remove:hover { opacity:1; }

.badge { display:inline-block; padding:2px 8px; border-radius:10px; font-size:10px; font-weight:500; }
.badge-green { background:var(--green-bg); color:var(--green); }
.badge-yellow { background:var(--yellow-bg); color:#856404; }
.badge-red { background:var(--red-bg); color:var(--red); }
.badge-gold { background:var(--gold); color:#856404; }

.error-text { color:var(--danger); font-size:12px; margin-top:6px; }
.gold-warning { background:var(--gold); border:1px solid var(--gold-border); border-radius:var(--radius-sm); padding:6px 14px; font-size:12px; margin:10px 0; }

/* Dropdown search */
.select-search { position:relative; }
.dropdown-list { position:absolute; top:100%; left:0; right:0; max-height:240px; overflow-y:auto; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-sm); box-shadow:var(--shadow-md); z-index:200; }
.dropdown-item { padding:7px 10px; cursor:pointer; font-size:13px; border-bottom:1px solid var(--border); display:flex; justify-content:space-between; }
.dropdown-item:hover { background:var(--primary-bg); }
.dropdown-item .dim { color:var(--text-secondary); font-size:11px; }

/* Deduction preview */
.deduction-preview { background:#f9fafb; border-radius:var(--radius); padding:14px; margin:12px 0; border:1px solid var(--border); }
.deduction-preview h4 { font-size:13px; margin-bottom:6px; }
.deduction-item { padding:5px 0; font-size:12px; border-bottom:1px solid var(--border); display:flex; justify-content:space-between; align-items:center; }
.deduction-item:last-child { border-bottom:none; }
.deduction-warning { color:var(--danger); font-weight:500; }
.text-red { color:var(--red); }
.text-green { color:var(--green); }

/* Tables */
.table-wrap { overflow-x:auto; }
.table { width:100%; border-collapse:collapse; font-size:12px; }
.table th, .table td { padding:7px 8px; text-align:left; border-bottom:1px solid var(--border); }
.table th { font-weight:500; color:var(--text-secondary); background:var(--bg); position:sticky; top:0; white-space:nowrap; }
.table tr:hover { background:#fafbfc; }
.table .actions { display:flex; gap:3px; flex-wrap:wrap; }

.pagination { display:flex; gap:4px; justify-content:center; margin-top:14px; }
.pagination button { padding:4px 8px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--surface); cursor:pointer; font-size:12px; }
.pagination button.active { background:var(--primary); color:#fff; border-color:var(--primary); }
.pagination button:disabled { opacity:0.3; cursor:default; }

/* Schedule */
.coach-filter { display:flex; gap:5px; flex-wrap:wrap; }
.coach-filter .coach-chip { padding:4px 10px; border:1px solid var(--border); border-radius:14px; cursor:pointer; font-size:12px; transition:.15s; user-select:none; }
.coach-filter .coach-chip:hover { border-color:var(--primary); }
.coach-filter .coach-chip.active { background:var(--primary); color:#fff; border-color:var(--primary); }
.schedule-grid { overflow-x:auto; }
.schedule-table { width:100%; border-collapse:collapse; font-size:11px; }
.schedule-table th, .schedule-table td { border:1px solid var(--border); padding:3px 2px; text-align:center; }
.schedule-table th { background:var(--bg); font-weight:500; color:var(--text-secondary); min-width:90px; }
.schedule-table .time-col { min-width:48px; background:var(--bg); font-weight:500; color:var(--text-secondary); vertical-align:top; padding:0; position:relative; }
.time-label { position:absolute; top:-8px; left:4px; font-size:10px; background:var(--bg); padding:0 3px; z-index:1; }
.schedule-table .schedule-cell { min-height:34px; cursor:pointer; transition:.15s; font-size:10px; vertical-align:top; padding:6px 3px 3px; border-top:2px solid var(--border); }
.schedule-table .schedule-cell:first-child { border-top:2px solid var(--border); }
.schedule-table .schedule-cell:hover { outline:2px solid var(--primary); outline-offset:-2px; }
.schedule-table .schedule-cell.gold-time { background:var(--gold); }
.schedule-table .schedule-cell.ken-time { background:#e3f2fd; }

/* Package cards - compact */
.package-summary { margin-bottom:16px; }
.package-summary h4 { font-size:14px; margin-bottom:8px; }
.summary-cards { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px; }
.summary-card { flex:1 1 180px; min-width:180px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:10px 12px; font-size:12px; transition:.15s; cursor:default; }
.summary-card:hover { box-shadow:var(--shadow); }
.summary-card .sc-name { font-weight:500; font-size:13px; }
.summary-card .sc-type { font-size:11px; color:var(--text-secondary); }
.summary-card .sc-remaining { font-size:20px; font-weight:600; }
.summary-card .sc-meta { font-size:10px; color:var(--text-secondary); margin-top:2px; }
.summary-card.green { border-left:3px solid var(--green); }
.summary-card.yellow { border-left:3px solid var(--yellow); }
.summary-card.red { border-left:3px solid var(--red); }

.package-cards { display:flex; flex-wrap:wrap; gap:8px; }
.package-card { flex:1 1 200px; min-width:200px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:10px 12px; font-size:12px; transition:.15s; position:relative; }
.package-card:hover { box-shadow:var(--shadow); }
.package-card .pkg-header { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:4px; }
.package-card .pkg-name { font-weight:500; font-size:13px; }
.package-card .pkg-type { font-size:11px; color:var(--text-secondary); }
.package-card .pkg-remaining { font-size:22px; font-weight:600; line-height:1; }
.package-card .pkg-total { font-size:11px; color:var(--text-secondary); }
.package-card .pkg-meta { font-size:10px; color:var(--text-secondary); margin-top:3px; }
.package-card .pkg-actions { position:absolute; top:6px; right:6px; display:flex; gap:2px; opacity:1; transition:.15s; }
.package-card:hover .pkg-actions { opacity:1; }
.package-card .pkg-deductions { margin-top:8px; border-top:1px solid var(--border); padding-top:6px; max-height:120px; overflow-y:auto; }
.package-card .pkg-deductions summary { cursor:pointer; font-size:11px; color:var(--text-secondary); }
.package-card .pkg-deduction-item { font-size:10px; padding:2px 0; color:var(--text-secondary); display:flex; justify-content:space-between; }
.package-card.green { border-left:3px solid var(--green); }
.package-card.yellow { border-left:3px solid var(--yellow); }
.package-card.red { border-left:3px solid var(--red); }

/* Modal */
.modal { position:fixed; inset:0; z-index:1000; display:flex; align-items:center; justify-content:center; }
.modal-overlay { position:absolute; inset:0; background:rgba(0,0,0,0.3); }
.modal-content { position:relative; background:var(--surface); border-radius:var(--radius); padding:20px; max-width:460px; width:92%; box-shadow:0 10px 40px rgba(0,0,0,0.15); max-height:90vh; overflow-y:auto; }
.modal-content h3 { margin-bottom:14px; font-size:16px; }

/* Simple list */
.simple-list { display:flex; flex-wrap:wrap; gap:4px; }
.simple-item { padding:4px 10px; background:var(--bg); border-radius:var(--radius-sm); font-size:12px; display:flex; align-items:center; gap:4px; }
.simple-item .si-del { cursor:pointer; color:var(--danger); opacity:0.5; font-size:15px; line-height:1; }
.simple-item .si-del:hover { opacity:1; }

.tab-content.active { display:block; }
.tab-content { display:none; }
.text-center { text-align:center; }

/* Responsive */
@media (max-width:768px) {
  .sidebar { width:50px; }
  .sidebar-title, .nav-item span:not(.nav-icon), .sidebar-footer { display:none; }
  .nav-item { justify-content:center; padding:10px; }
  .nav-icon { margin:0; font-size:16px; }
  .main-content { margin-left:50px; padding:12px; }
  .form-grid { grid-template-columns:1fr; }
  .span-2 { grid-column:span 1; }
  .filter-bar { flex-direction:column; }
  .input-sm { width:100%; }
  .package-card { flex:1 1 150px; min-width:150px; }
}