/* ========================================
   K12 学习计划 — 共享样式
   设计令牌 + 通用组件（无角色覆盖）
   ======================================== */

/* ---------- 设计令牌 ---------- */
:root {
  --brand: #FF8A3D;
  --brand-light: #FFB347;
  --brand-dark: #E06A1B;
  --student-primary: #FF8A3D;
  --student-primary-light: #FFB347;
  --student-primary-dark: #E06A1B;
  --student-gold: #FBBF24;
  --student-gold-light: #FDE68A;
  --student-success: #10B981;
  --student-success-light: #D1FAE5;
  --student-danger: #EF4444;
  --student-danger-light: #FEE2E2;
  --student-warning: #F59E0B;
  --student-purple: #A855F7;
  --student-pink: #EC4899;
  --parent-primary: #3B82F6;
  --parent-primary-light: #60A5FA;
  --parent-primary-dark: #1D4ED8;
  --parent-indigo: #6366F1;
  --bg: #FFF9F5;
  --panel: #FFFFFF;
  --ink: #1E293B;
  --text-secondary: #64748B;
  --line: #E2E8F0;
  --soft: #F1F5F9;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 20px;
  --r-xl: 24px;
  --r-full: 999px;
  --shadow-sm: 0 1px 3px rgba(255,138,61,0.08);
  --shadow-md: 0 4px 12px rgba(255,138,61,0.12);
  --shadow-lg: 0 8px 24px rgba(255,138,61,0.16);
  --shadow-glow: 0 0 20px rgba(251,191,36,0.3);
  --font: "PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

body.role-parent {
  --bg: #F8FAFC;
  --panel: #FFFFFF;
  --ink: #1E293B;
  --text-secondary: #64748B;
  --line: #E2E8F0;
  --soft: #F1F5F9;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,0.06);
  --shadow-md: 0 4px 12px rgba(15,23,42,0.08);
  --shadow-lg: 0 8px 24px rgba(15,23,42,0.12);
  --shadow-glow: none;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { min-height: 100vh; color: var(--ink); background: var(--bg); line-height: 1.6; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: none; outline: none; transition: all 0.2s ease; }
a { text-decoration: none; color: inherit; }

/* ---------- 登录页 ---------- */
.auth-screen {
  position: relative; min-height: 100vh; display: grid; place-items: center;
  padding: 24px; background: linear-gradient(135deg, #FF8A3D 0%, #FFB347 50%, #FBBF24 100%);
  overflow: hidden;
}
body.role-parent .auth-screen {
  background: linear-gradient(135deg, #3B82F6 0%, #6366F1 50%, #60A5FA 100%);
}
.auth-blob {
  position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.3;
  animation: blobFloat 8s ease-in-out infinite;
}
.blob-1 { width: 400px; height: 400px; background: #FB923C; top: -100px; right: -80px; animation-delay: 0s; }
.blob-2 { width: 300px; height: 300px; background: #EC4899; bottom: -60px; left: -40px; animation-delay: 2s; }
.blob-3 { width: 250px; height: 250px; background: #34D399; top: 40%; left: 55%; animation-delay: 4s; }
body.role-parent .blob-1 { background: #818CF8; }
body.role-parent .blob-2 { background: #34D399; }
body.role-parent .blob-3 { background: #FBBF24; }
@keyframes blobFloat {
  0%, 100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(20px,-30px) scale(1.05); }
  66% { transform: translate(-15px,20px) scale(0.95); }
}
.auth-card {
  position: relative; z-index: 1; width: min(440px,100%);
  border-radius: var(--r-xl); padding: 40px 36px;
  color: var(--ink); background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px); box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  animation: cardIn 0.5s ease;
}
.auth-card .brand h1, .auth-form label, .demo-accounts strong { color: #7C3A08; }
.auth-card .brand p, .demo-accounts span { color: #8B5E34; }
@keyframes cardIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.brand { display: flex; gap: 14px; align-items: center; margin-bottom: 28px; }
.brand-mark {
  width: 52px; height: 52px; display: grid; place-items: center;
  border-radius: var(--r-md); color: #fff; background: var(--student-primary);
  font-weight: 800; font-size: 26px; box-shadow: 0 4px 12px rgba(255,138,61,0.3);
  flex-shrink: 0;
}
body.role-parent .brand-mark { background: var(--parent-primary); box-shadow: 0 4px 12px rgba(59,130,246,0.3); }
.brand h1 { font-size: 22px; letter-spacing: 1px; margin: 0; }
.brand p { color: var(--text-secondary); font-size: 13px; margin: 0; }
.auth-form { display: grid; gap: 16px; margin-top: 8px; }
.auth-form label { display: grid; gap: 8px; color: var(--text-secondary); font-weight: 600; font-size: 14px; }
.auth-field { display: grid; gap: 8px; }
.field-label { color: var(--text-secondary); font-size: 14px; font-weight: 600; }
.auth-form select, .auth-form input {
  width: 100%; border: 2px solid var(--line); border-radius: var(--r-sm);
  padding: 12px 14px; font-size: 15px; background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.auth-form select:focus, .auth-form input:focus {
  border-color: var(--student-primary-light); box-shadow: 0 0 0 3px rgba(255,138,61,0.1); outline: none;
}
.role-picker {
  display: grid; grid-template-columns: repeat(auto-fit,minmax(88px,1fr)); gap: 8px;
  padding: 4px; border: 2px solid var(--line); border-radius: 16px; background: #f8fafc;
}
.role-option {
  min-height: 44px; border-radius: 12px; color: #64748b; background: transparent;
  font-size: 15px; font-weight: 800;
}
.role-option:hover { color: #9a3412; background: #fff7ed; }
.role-option.active { color: #fff; background: var(--student-primary); box-shadow: 0 8px 18px rgba(255,138,61,0.24); }
.account-picker { display: grid; gap: 10px; }
.account-option {
  width: 100%; min-height: 58px; display: flex; align-items: center;
  justify-content: space-between; gap: 14px; padding: 12px 14px;
  border: 2px solid var(--line); border-radius: 16px; background: #fff; text-align: left;
}
.account-option:hover { border-color: var(--student-primary-light); background: #fffaf5; }
.account-option.active { border-color: var(--student-primary); background: #fff7ed; box-shadow: 0 0 0 3px rgba(255,138,61,0.1); }
.account-name { color: var(--ink); font-size: 16px; font-weight: 900; }
.account-meta { color: #9a4b10; font-size: 12px; font-weight: 700; white-space: nowrap; }
body.role-parent .auth-form select:focus, body.role-parent .auth-form input:focus {
  border-color: var(--parent-primary-light); box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.auth-form .primary-button { margin-top: 6px; height: 48px; font-size: 16px; letter-spacing: 2px; }
.demo-accounts {
  margin-top: 24px; padding-top: 20px; border-top: 1px dashed var(--line);
  display: grid; gap: 6px; color: var(--text-secondary); font-size: 13px;
}
.demo-accounts strong { color: var(--student-primary); font-size: 14px; }
body.role-parent .demo-accounts strong { color: var(--parent-primary); }

/* ---------- 主应用壳 ---------- */
html, body { width: 100%; max-width: 100vw; overflow-x: hidden; }
.app-shell { min-height: 100vh; width: 100%; display: grid; grid-template-columns: 1fr; }
body.role-parent .app-shell { grid-template-columns: 260px 1fr; }

/* ---------- 侧边栏（家长端） ---------- */
.sidebar {
  padding: 28px 18px; background: linear-gradient(180deg, #3B82F6 0%, #1D4ED8 100%);
  color: #fff; display: flex; flex-direction: column; gap: 24px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.sidebar .brand h1 { color: #fff; font-size: 20px; }
.sidebar .brand p { color: rgba(255,255,255,0.7); font-size: 12px; }
.sidebar .brand-mark { background: rgba(255,255,255,0.2); box-shadow: none; }
.sidebar .user-panel {
  padding: 14px; border-radius: var(--r-md); background: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.15);
  display: flex; flex-direction: column; gap: 10px;
}
.sidebar .user-avatar {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; background: var(--student-gold); color: #78350F;
  font-weight: 800; font-size: 17px;
}
.sidebar .user-info { display: flex; flex-direction: column; gap: 2px; }
.sidebar .user-info span { color: rgba(255,255,255,0.7); font-size: 12px; }
.sidebar .user-info strong { font-size: 16px; color: #fff; }
.sidebar .ghost-button {
  width: 100%; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9); padding: 8px 0; border-radius: var(--r-sm); font-size: 13px;
}
.sidebar .ghost-button:hover { background: rgba(255,255,255,0.2); }
.nav-list { display: grid; gap: 4px; }
.nav-button {
  display: flex; align-items: center; gap: 10px; min-height: 42px;
  border-radius: var(--r-sm); padding: 0 14px; font-weight: 600; font-size: 14px;
  text-align: left; color: rgba(255,255,255,0.75); background: transparent;
}
.nav-button:hover { color: #fff; background: rgba(255,255,255,0.1); }
.nav-button.active { color: var(--parent-primary-dark); background: #fff; font-weight: 700; box-shadow: 0 2px 8px rgba(0,0,0,0.12); }
.nav-icon { font-size: 17px; line-height: 1; }
.sidebar-footer { margin-top: auto; text-align: center; color: rgba(255,255,255,0.5); font-size: 12px; }

/* ---------- 学生端底部 Tab ---------- */
.student-tab-bar {
  display: none; grid-column: 1 / -1; position: sticky; bottom: 0;
  background: var(--panel); border-top: 1px solid var(--line);
  display: flex; justify-content: space-around; padding: 6px 0 10px; z-index: 100;
}
body.role-student .student-tab-bar { display: flex; }
.tab-item {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 6px 16px; border-radius: var(--r-md); background: transparent;
  color: var(--text-secondary); font-size: 11px; font-weight: 600; position: relative;
}
.tab-item .tab-icon { font-size: 22px; line-height: 1; transition: transform 0.2s ease; }
.tab-item.active { color: var(--student-primary); }
.tab-item.active .tab-icon { transform: scale(1.15); }

/* ---------- 主内容区 ---------- */
.main-content {
  padding: 24px 28px; display: grid; gap: 24px; align-content: start;
  max-height: 100vh; overflow-y: auto;
}
.topbar {
  padding: 18px 24px; display: flex; justify-content: space-between;
  gap: 16px; align-items: center; border-radius: var(--r-lg);
  background: var(--panel); box-shadow: var(--shadow-sm); border: 1px solid var(--line);
}
.topbar h2 { font-size: 26px; margin: 0; letter-spacing: 0.5px; }
.eyebrow { color: var(--text-secondary); font-size: 13px; font-weight: 600; margin: 0; }
.score-box {
  display: flex; align-items: center; gap: 8px; padding: 8px 18px;
  border-radius: var(--r-md); background: linear-gradient(135deg, #FEF3C7, #FDE68A);
  border: 1px solid #FCD34D;
}
.score-label { color: #92400E; font-weight: 600; font-size: 12px; }
.score-box strong { font-size: 26px; color: #92400E; line-height: 1; }
.score-icon { font-size: 20px; }

/* ---------- 按钮系统 ---------- */
.primary-button {
  min-height: 40px; border-radius: var(--r-sm); padding: 0 18px;
  font-weight: 700; font-size: 14px; display: inline-flex; align-items: center;
  justify-content: center; gap: 6px; color: #fff; background: var(--student-primary);
  box-shadow: 0 2px 8px rgba(255,138,61,0.25);
}
.primary-button:hover { background: var(--student-primary-dark); box-shadow: 0 4px 14px rgba(255,138,61,0.35); transform: translateY(-1px); }
.ghost-button {
  min-height: 40px; border-radius: var(--r-sm); padding: 0 18px;
  font-weight: 600; font-size: 14px; display: inline-flex; align-items: center;
  justify-content: center; gap: 6px; color: var(--student-primary); background: var(--soft);
  border: 1px solid var(--line);
}
.ghost-button:hover { background: #FFE8D6; border-color: var(--student-primary-light); }
.danger-button {
  min-height: 40px; border-radius: var(--r-sm); padding: 0 18px;
  font-weight: 700; font-size: 14px; display: inline-flex; align-items: center;
  justify-content: center; gap: 6px; color: var(--student-danger); background: var(--student-danger-light);
  border: 1px solid #FECACA;
}
.danger-button:hover { background: #FECACA; }

/* ---------- 视图 ---------- */
.view { display: none; }
.view.is-visible { display: grid; gap: 20px; animation: viewIn 0.3s ease; }
@keyframes viewIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.section-head h3 { font-size: 20px; margin: 0; }
.section-head p { color: var(--text-secondary); font-size: 13px; margin: 0; }

/* ---------- 表单面板 ---------- */
.form-panel {
  padding: 24px; border-radius: var(--r-lg); background: var(--panel);
  box-shadow: var(--shadow-md); border: 1px solid var(--line); animation: formIn 0.25s ease;
}
@keyframes formIn { from { opacity: 0; max-height: 0; } to { opacity: 1; max-height: 600px; } }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.form-grid label { display: grid; gap: 7px; font-weight: 600; font-size: 14px; }
.form-grid .wide { grid-column: 1 / -1; }
.compact-field {
  display: grid; gap: 6px; min-width: 180px; color: var(--text-secondary);
  font-size: 13px; font-weight: 700;
}
.compact-field select {
  min-height: 38px; border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 0 12px; background: #fff; color: var(--ink); font-size: 14px;
}
.form-panel input, .form-panel select, .form-panel textarea {
  width: 100%; border: 2px solid var(--line); border-radius: var(--r-sm);
  padding: 10px 14px; font-size: 15px; background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-panel input:focus, .form-panel select:focus, .form-panel textarea:focus {
  border-color: var(--student-primary-light); box-shadow: 0 0 0 3px rgba(255,138,61,0.1); outline: none;
}
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------- 计划列表 ---------- */
.plan-list, .prize-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 16px;
}

/* ---------- 卡片 ---------- */
.card {
  padding: 20px; display: grid; gap: 12px; align-content: start;
  border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--shadow-sm);
  border: 1px solid var(--line); transition: box-shadow 0.2s, transform 0.2s; position: relative; overflow: hidden;
}
.card-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.card h4 { font-size: 16px; line-height: 1.4; margin: 0; }
.card p { color: var(--text-secondary); font-size: 14px; line-height: 1.5; margin: 0; }
.badge {
  white-space: nowrap; border-radius: var(--r-full); padding: 4px 12px;
  font-weight: 700; font-size: 12px; border: 1px solid transparent;
}
.badge.status-done { color: #065F46; background: var(--student-success-light); border-color: #A7F3D0; }
.badge.status-overdue { color: #991B1B; background: var(--student-danger-light); border-color: #FECACA; }
.badge.status-pending { color: var(--student-primary-dark); background: #FFEDD5; border-color: #FED7AA; }
.badge.status-review { color: #92400E; background: #FEF3C7; border-color: #FCD34D; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; }
.meta { border-radius: var(--r-sm); background: var(--soft); padding: 4px 10px; font-size: 12px; font-weight: 500; color: var(--text-secondary); }
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }

.plan-card--review { border-color: #FCD34D; background: #FFFBEB; }
.plan-approval-panel {
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px solid #FDE68A;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.plan-approval-copy { display: grid; gap: 4px; }
.plan-approval-copy strong { color: #92400E; font-size: 14px; }
.plan-approval-copy span { color: var(--text-secondary); font-size: 12px; }
.plan-approval-actions { display: flex; gap: 8px; flex-shrink: 0; }

/* ---------- 家庭成员管理 ---------- */
.family-panel {
  padding: 20px;
  border: 1px solid #BFDBFE;
  border-radius: var(--r-md);
  display: grid;
  gap: 16px;
  background: #EFF6FF;
}
.family-panel__summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.family-panel__label { color: var(--text-secondary); font-size: 12px; font-weight: 700; }
.family-panel h4 { margin: 3px 0 0; font-size: 18px; }
.family-invite-code { display: grid; gap: 3px; text-align: right; }
.family-invite-code span { color: var(--text-secondary); font-size: 12px; }
.family-invite-code strong { color: #1D4ED8; font-size: 18px; letter-spacing: 1px; }
.family-member-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.family-member-item {
  min-width: 0;
  padding: 11px 12px;
  border: 1px solid #DBEAFE;
  border-radius: var(--r-sm);
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  background: #fff;
}
.family-member-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #1E40AF;
  background: #DBEAFE;
  font-weight: 800;
}
.family-member-item div { min-width: 0; display: grid; gap: 2px; }
.family-member-item strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.family-member-item div span { color: var(--text-secondary); font-size: 11px; }
.join-family-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: end; }
.join-family-form label { display: grid; gap: 6px; font-size: 13px; font-weight: 700; }
.join-family-form input { text-transform: uppercase; }
.join-family-form button { min-height: 42px; }
.family-panel__hint { margin: -5px 0 0; color: var(--text-secondary); font-size: 11px; }
.family-join-request-list { display: grid; gap: 8px; }
.family-request-heading { color: #92400E; font-size: 13px; font-weight: 800; }
.family-request-item {
  padding: 11px 12px;
  border: 1px solid #FCD34D;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #FFFBEB;
}
.family-request-item > div:first-child { display: grid; gap: 2px; }
.family-request-item span { color: var(--text-secondary); font-size: 11px; }
.family-request-actions { display: flex; gap: 8px; }
.family-request-actions button { min-height: 38px; }
.empty-state {
  grid-column: 1 / -1; padding: 48px 36px; text-align: center;
  color: var(--text-secondary); border-radius: var(--r-lg); background: var(--panel);
  border: 2px dashed var(--line); font-size: 15px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed; right: 24px; bottom: 24px; max-width: 340px;
  padding: 14px 20px; border-radius: var(--r-md); color: #fff; background: var(--ink);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2); opacity: 0; pointer-events: none;
  transform: translateY(12px); transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  font-weight: 500; font-size: 14px; z-index: 1000;
  display: flex; align-items: center; gap: 8px;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ---------- 抽奖转盘 ---------- */
.lottery-wheel-container { display: flex; flex-direction: column; align-items: center; gap: 20px; padding: 32px; }
.lottery-wheel { position: relative; width: 300px; height: 300px; overflow: visible; }
.lottery-wheel canvas { width: 100%; height: 100%; transition: transform 4s cubic-bezier(0.17,0.67,0.12,0.99); }
.lottery-pointer {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  font-size: 32px; z-index: 2; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3)); line-height: 1;
}
.lottery-btn {
  min-height: 48px; padding: 0 32px; border-radius: var(--r-full); font-size: 16px; font-weight: 700;
  color: #fff; background: linear-gradient(135deg, var(--student-primary), var(--student-gold));
  box-shadow: 0 4px 16px rgba(255,138,61,0.4);
}
.lottery-btn:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(255,138,61,0.5); }
.lottery-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.lottery-hint { font-size: 13px; color: var(--text-secondary); text-align: center; }

/* ---------- KPI 卡片（家长端） ---------- */
.kpi-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.kpi-card { padding: 20px; border-radius: var(--r-md); background: var(--panel); border: 1px solid var(--line); display: grid; gap: 8px; }
.kpi-label { font-size: 13px; color: var(--text-secondary); font-weight: 600; }
.kpi-value { font-size: 32px; font-weight: 800; color: var(--ink); line-height: 1; }
.kpi-sub { font-size: 12px; color: var(--text-secondary); }
.kpi-trend-up { color: var(--student-success); font-weight: 600; }
.kpi-trend-down { color: var(--student-danger); font-weight: 600; }

/* ---------- 筛选栏 ---------- */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filter-chip {
  padding: 6px 14px; border-radius: var(--r-full); font-size: 13px; font-weight: 600;
  border: 1.5px solid var(--line); background: var(--panel); color: var(--text-secondary);
  cursor: pointer; transition: all 0.2s;
}
.filter-chip:hover { border-color: var(--student-primary-light); color: var(--student-primary); }
.filter-chip.active { background: var(--student-primary); border-color: var(--student-primary); color: #fff; }

/* ---------- 奖项卡片 ---------- */
.prize-card { padding: 20px; border-radius: var(--r-md); background: var(--panel); border: 1px solid var(--line); display: grid; gap: 10px; position: relative; }
.prize-header { display: flex; justify-content: space-between; align-items: flex-start; }
.prize-name { font-size: 16px; font-weight: 700; margin: 0; }
.prize-meta { display: flex; gap: 8px; flex-wrap: wrap; }
.prize-toggle {
  position: relative; width: 40px; height: 22px; border-radius: var(--r-full);
  background: var(--line); cursor: pointer; border: none; transition: background 0.2s;
}
.prize-toggle.active { background: var(--student-success); }
.prize-toggle::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px;
  border-radius: 50%; background: #fff; transition: transform 0.2s;
}
.prize-toggle.active::after { transform: translateX(18px); }

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: grid; place-items: center;
  z-index: 900; opacity: 0; pointer-events: none; transition: opacity 0.25s ease;
}
.modal-overlay.visible { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--panel); border-radius: var(--r-xl); padding: 32px;
  width: min(520px,90vw); box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  transform: translateY(20px); transition: transform 0.25s ease;
}
.modal-overlay.visible .modal { transform: translateY(0); }
.modal h3 { font-size: 20px; margin: 0 0 20px; }

/* ---------- 进度概览 ---------- */
.progress-overview {
  display: grid; grid-template-columns: auto 1fr; gap: 12px 20px; align-items: center;
  padding: 16px 20px; border-radius: var(--r-lg); background: var(--panel); border: 1px solid var(--line);
}
.progress-ring { position: relative; width: 72px; height: 72px; }
.progress-ring svg { transform: rotate(-90deg); }
.progress-ring__label {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 18px; font-weight: 800; color: var(--student-primary);
}
.progress-text { font-size: 14px; color: var(--text-secondary); }
.progress-text strong { color: var(--ink); }

/* ---------- 积分中心 Hero ---------- */
.score-hero { display: grid; gap: 28px; align-items: start; }
.score-hero__balance {
  display: flex; align-items: baseline; gap: 10px; padding: 20px 24px;
  border-radius: var(--r-lg); background: linear-gradient(135deg, #FFF7ED, #FEF3C7);
  border: 1px solid #FCD34D;
}
.score-hero__label { font-size: 14px; color: #92400E; font-weight: 600; }
.score-hero__value { font-size: 48px; font-weight: 900; color: #92400E; line-height: 1; }
.score-history { padding: 20px; border-radius: var(--r-lg); background: var(--panel); border: 1px solid var(--line); }
.score-history h4 { margin: 0 0 12px; font-size: 15px; }

/* ---------- 家长端提醒框 ---------- */
.alert-box { display: grid; gap: 10px; }
.alert-card { padding: 12px 16px; border-radius: var(--r-md); font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.alert-card--warning { background: #FEF3C7; border: 1px solid #FCD34D; color: #92400E; }
.alert-card--info { background: #DBEAFE; border: 1px solid #93C5FD; color: #1E40AF; }

/* ---------- 导航显隐 ---------- */
.parent-nav.hidden, .student-nav.hidden { display: none !important; }
.hidden { display: none !important; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  body.role-parent .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; padding: 16px; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 12px; }
  .sidebar .brand { flex: 1; }
  .nav-list { flex-direction: row; width: 100%; }
  .nav-button { flex: 1; justify-content: center; }
  .sidebar-footer { display: none; }
  .kpi-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 640px) {
  .main-content { padding: 16px; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .form-grid { grid-template-columns: 1fr; }
  .plan-list, .prize-list { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr; }
  .lottery-wheel { width: 260px; height: 260px; }
}

/* ---------- 动画降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}