/* 海南高考标准分转换系统 - 绿色主题 */
:root {
    --primary: #16a34a;
    --primary-dark: #15803d;
    --primary-light: #22c55e;
    --primary-lighter: #dcfce7;
    --primary-bg: #f0fdf4;
    --accent: #f59e0b;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --bg: #f9fafb;
    --white: #ffffff;
    --danger: #dc2626;
    --radius: 10px;
    --shadow: 0 2px 12px rgba(0,0,0,.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ===== 顶部导航 ===== */
.topbar { background: var(--white); border-bottom: 1px solid var(--border); padding: 0 24px; height: 60px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 4px rgba(0,0,0,.04); }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-logo { width: 38px; height: 38px; border-radius: 8px; object-fit: cover; }
.topbar-title { font-size: 17px; font-weight: 700; color: var(--text); }
.topbar-title .sep { color: var(--border); margin: 0 8px; font-weight: 400; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.nav-btn { padding: 7px 16px; border: none; background: transparent; color: var(--text-light); cursor: pointer; font-size: 14px; border-radius: 6px; transition: all .2s; }
.nav-btn:hover { background: var(--primary-lighter); color: var(--primary-dark); }
.nav-btn.active { background: var(--primary); color: var(--white); }
.user-info { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 14px; }
.user-name { font-weight: 600; }
.user-role { font-size: 12px; color: var(--text-light); background: var(--primary-lighter); padding: 2px 8px; border-radius: 10px; }
.logout-btn { padding: 6px 14px; border: 1px solid var(--border); background: #fff; color: var(--text-light); cursor: pointer; border-radius: 6px; font-size: 13px; transition: all .2s; }
.logout-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ===== 主内容 ===== */
.main { max-width: 1400px; margin: 0 auto; padding: 24px; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 20px; color: var(--text); }

/* ===== 卡片 ===== */
.card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }

/* ===== 统计卡片 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: var(--white); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); border-left: 4px solid var(--primary); }
.stat-card .label { font-size: 13px; color: var(--text-light); margin-bottom: 6px; }
.stat-card .value { font-size: 28px; font-weight: 700; color: var(--primary-dark); }
.stat-card .desc { font-size: 12px; color: var(--text-light); margin-top: 4px; }

/* ===== 按钮 ===== */
.btn { padding: 9px 22px; border: none; border-radius: 6px; cursor: pointer; font-size: 14px; transition: all .2s; display: inline-flex; align-items: center; gap: 6px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { background: #86efac; cursor: not-allowed; }
.btn-outline { background: #fff; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-lighter); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-warning { background: var(--accent); color: #fff; }
.btn-warning:hover { background: #d97706; }

/* ===== 表单 ===== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.form-input, .form-select, .form-textarea { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; transition: border-color .2s; background: #fff; }
.form-input:focus, .form-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22,163,74,.1); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-hint { font-size: 12px; color: var(--text-light); margin-top: 4px; }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th { background: var(--primary-bg); color: var(--primary-dark); font-weight: 600; padding: 10px 12px; text-align: left; white-space: nowrap; border-bottom: 2px solid var(--primary-lighter); position: sticky; top: 0; }
table.data-table td { padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data-table tr:hover { background: var(--primary-bg); }
table.data-table .std-score { color: var(--primary-dark); font-weight: 600; }
table.data-table .total-score { color: var(--accent); font-weight: 700; font-size: 14px; }
table.data-table .rank { color: var(--text-light); }
table.data-table .name-link { color: var(--primary); cursor: pointer; font-weight: 500; }
table.data-table .name-link:hover { text-decoration: underline; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; }
.tag-draft { background: #f3f4f6; color: #6b7280; }
.tag-teacher { background: #fef3c7; color: #92400e; }
.tag-student { background: var(--primary-lighter); color: var(--primary-dark); }

/* ===== 登录页 ===== */
.login-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #065f46 0%, #10b981 50%, #34d399 100%); position: relative; overflow: hidden; }
.login-body::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 60%); animation: float 20s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,-30px)} }
.login-box { background: rgba(255,255,255,.97); border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,.2); padding: 40px; width: 420px; max-width: 90vw; position: relative; z-index: 1; }
.login-logo { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 8px; }
.login-logo img { width: 52px; height: 52px; border-radius: 12px; }
.login-logo-text { font-size: 20px; font-weight: 700; color: var(--primary-dark); }
.login-subtitle { text-align: center; color: var(--text-light); font-size: 13px; margin-bottom: 28px; }
.login-tabs { display: flex; gap: 0; margin-bottom: 24px; border-bottom: 2px solid var(--border); }
.login-tab { flex: 1; padding: 10px; text-align: center; cursor: pointer; font-size: 14px; color: var(--text-light); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .2s; }
.login-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.login-footer { text-align: center; margin-top: 20px; font-size: 13px; color: var(--text-light); }
.login-footer a { color: var(--primary); cursor: pointer; }

/* ===== 上传区 ===== */
.upload-area { border: 2px dashed var(--primary-lighter); border-radius: var(--radius); padding: 40px; text-align: center; background: var(--primary-bg); transition: all .2s; cursor: pointer; }
.upload-area:hover { border-color: var(--primary); background: #ecfdf5; }
.upload-area .icon { font-size: 48px; margin-bottom: 12px; }
.upload-area .text { font-size: 15px; color: var(--text); margin-bottom: 6px; }
.upload-area .hint { font-size: 12px; color: var(--text-light); }
.upload-area input[type=file] { display: none; }

/* ===== 弹窗 ===== */
.modal-mask { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,.5); z-index: 1000; align-items: center; justify-content: center; }
.modal-mask.active { display: flex; }
.modal { background: #fff; border-radius: 12px; padding: 24px; width: 600px; max-width: 90vw; max-height: 85vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-close { cursor: pointer; font-size: 20px; color: var(--text-light); background: none; border: none; }
.modal-row { display: flex; padding: 8px 0; border-bottom: 1px solid #f3f4f6; }
.modal-row .label { width: 120px; color: var(--text-light); font-size: 14px; }
.modal-row .value { flex: 1; font-size: 14px; font-weight: 500; }

/* ===== 趋势图 ===== */
.trend-chart { width: 100%; height: 320px; }
.trend-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.trend-tab { padding: 6px 14px; border-radius: 16px; border: 1px solid var(--border); background: #fff; cursor: pointer; font-size: 13px; transition: all .2s; }
.trend-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 加载 ===== */
.loading-mask { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255,255,255,.8); z-index: 2000; align-items: center; justify-content: center; flex-direction: column; gap: 16px; }
.loading-mask.active { display: flex; }
.spinner { width: 44px; height: 44px; border: 4px solid var(--primary-lighter); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 提示 ===== */
.toast { position: fixed; top: 80px; left: 50%; transform: translateX(-50%); padding: 12px 24px; border-radius: 8px; color: #fff; font-size: 14px; z-index: 3000; box-shadow: 0 4px 12px rgba(0,0,0,.15); animation: slideDown .3s ease; }
.toast-success { background: var(--primary); }
.toast-error { background: var(--danger); }
.toast-info { background: #3b82f6; }
@keyframes slideDown { from { opacity: 0; transform: translate(-50%, -20px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ===== Tab切换 ===== */
.tab-bar { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 2px solid var(--border); }
.tab-btn { padding: 10px 20px; background: none; border: none; cursor: pointer; font-size: 14px; color: var(--text-light); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .2s; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-btn:hover { color: var(--primary); }
.module { display: none; }
.module.active { display: block; }

/* ===== 筛选栏 ===== */
.filter-bar { display: flex; gap: 12px; align-items: flex-end; margin-bottom: 16px; flex-wrap: wrap; }
.filter-bar .form-group { margin-bottom: 0; min-width: 140px; }

/* ===== 空状态 ===== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-light); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: .5; }

/* 响应式 */
@media (max-width: 768px) {
    .topbar { padding: 0 12px; }
    .topbar-title { font-size: 14px; }
    .main { padding: 12px; }
    .form-row { flex-direction: column; gap: 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}