/* ==========================================================================
   V课程 · 账户 / 登录 / 支付 / 用户中心 样式
   ========================================================================== */

/* ---------- 登录页 ---------- */
.vk-auth{
  min-height:calc(100vh - var(--header-height));
  display:flex;align-items:center;justify-content:center;
  padding:48px 16px 64px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#eef4ff 0%,#f7faff 50%,#eef8f3 100%);
}
.vk-auth::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,110,246,.18),transparent 68%);
  top:-180px;left:-120px;
}
.vk-auth::after{
  content:"";position:absolute;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(7,193,96,.14),transparent 68%);
  bottom:-180px;right:-120px;
}
.auth-card{
  position:relative;z-index:1;width:100%;max-width:940px;
  display:grid;grid-template-columns:1fr 400px;
  background:#fff;border-radius:24px;box-shadow:0 30px 70px rgba(15,27,51,.14);overflow:hidden;
}
.auth-side{
  padding:44px 40px;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(150deg,#2b6ef6,#3f7bff 48%,#07c160);
  display:flex;flex-direction:column;justify-content:center;gap:18px;
}
.auth-side::after{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.12);right:-110px;bottom:-130px}
.auth-side__title{font-size:28px;font-weight:800;line-height:1.3;margin:0;color:#fff;letter-spacing:-.5px}
.auth-side__desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.85);margin:0;position:relative}
.auth-side__list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:12px;position:relative}
.auth-side__list li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.92)}
.auth-side__list span{width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:13px;flex:0 0 auto}
.auth-main{padding:40px 38px;display:flex;flex-direction:column}
.auth-main__head{text-align:center;margin-bottom:24px}
.auth-main__title{font-size:22px;font-weight:700;margin:0 0 6px}
.auth-main__sub{font-size:13px;color:var(--vk-text-3);margin:0}

.auth-tabs{display:flex;gap:6px;padding:4px;background:var(--vk-bg);border-radius:var(--radius-pill);margin-bottom:22px}
.auth-tab{flex:1;text-align:center;padding:9px 10px;border:0;background:transparent;border-radius:var(--radius-pill);font-size:14px;font-weight:500;color:var(--vk-text-3);transition:all var(--transition)}
.auth-tab.is-active{background:#fff;color:var(--theme-color);box-shadow:var(--shadow-sm)}
.auth-pane{display:none}
.auth-pane.is-active{display:block}

.wechat-login{display:flex;flex-direction:column;align-items:center;gap:14px;padding:6px 0}
.wechat-qr{
  width:212px;height:212px;border-radius:var(--theme-border-radius-l);
  border:1px solid var(--theme-line-color);background:#fff;
  display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;
}
.wechat-qr canvas,.wechat-qr img{width:100%!important;height:100%!important;display:block}
.wechat-qr__placeholder{font-size:13px;color:var(--vk-text-3);text-align:center;padding:16px;line-height:1.7}
.wechat-qr__mask{position:absolute;inset:0;background:rgba(255,255,255,.94);display:none;flex-direction:column;align-items:center;justify-content:center;gap:10px;font-size:13px;color:var(--vk-text-2);text-align:center;padding:16px}
.wechat-qr.is-expired .wechat-qr__mask{display:flex}
.wechat-tip{font-size:13px;color:var(--vk-text-3);display:flex;align-items:center;gap:6px;text-align:center;line-height:1.6}
.wechat-tip .dot{width:7px;height:7px;border-radius:50%;background:var(--vk-green);animation:vk-pulse 1.6s ease-in-out infinite}
@keyframes vk-pulse{0%,100%{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1.15)}}
.wechat-status{font-size:13px;min-height:20px;text-align:center}
.wechat-status.is-error{color:var(--vk-red)}
.wechat-status.is-success{color:var(--vk-green)}
.wechat-scan-btn{display:none}

.auth-form .form-row{margin-bottom:16px}
.auth-form .input-wrap{position:relative}
.auth-form .input-wrap input{padding-left:42px}
.auth-form .input-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:15px;opacity:.5}
.auth-form__extra{display:flex;align-items:center;justify-content:space-between;font-size:13px;margin:4px 0 18px}
.auth-form__extra a{color:var(--theme-color)}
.auth-divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--vk-text-3);font-size:12px}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:var(--theme-line-color)}
.auth-foot{text-align:center;font-size:13px;color:var(--vk-text-3);margin-top:18px}
.auth-foot a{color:var(--theme-color);font-weight:500}
.auth-msg{display:none;padding:10px 14px;border-radius:var(--theme-border-radius-m);font-size:13px;margin-bottom:14px}
.auth-msg.is-show{display:block}
.auth-msg.is-error{background:rgba(245,34,45,.07);color:#b71c24}
.auth-msg.is-success{background:rgba(7,193,96,.08);color:#067a3f}

/* ---------- 支付页 ---------- */
.pay-page{padding:36px 0 56px}
.pay-card{
  max-width:720px;margin:0 auto;background:#fff;border-radius:var(--theme-border-radius-xl);
  box-shadow:var(--shadow-md);overflow:hidden;
}
.pay-card__head{padding:22px 26px;border-bottom:1px solid var(--theme-line-color);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.pay-card__title{font-size:18px;font-weight:600;margin:0}
.pay-card__status{font-size:12px;padding:3px 12px;border-radius:var(--radius-pill);background:rgba(255,138,0,.12);color:var(--vk-orange)}
.pay-card__status.is-paid{background:rgba(7,193,96,.12);color:var(--vk-green)}
.pay-card__status.is-closed{background:var(--vk-bg-soft);color:var(--vk-text-3)}
.pay-card__body{padding:26px}
.pay-summary{display:flex;gap:16px;padding-bottom:20px;border-bottom:1px dashed var(--theme-line-color);margin-bottom:20px}
.pay-summary img{width:110px;height:74px;border-radius:var(--theme-border-radius-m);object-fit:cover;flex:0 0 auto;background:var(--vk-bg-soft)}
.pay-summary__main{flex:1 1 auto;min-width:0}
.pay-summary__title{font-size:16px;font-weight:600;margin:0 0 6px;line-height:1.5}
.pay-summary__meta{font-size:13px;color:var(--vk-text-3)}
.pay-amount{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:14px 0;font-size:14px;color:var(--vk-text-2)}
.pay-amount b{font-size:30px;font-weight:800;color:var(--vk-orange);line-height:1}
.pay-methods{display:flex;flex-direction:column;gap:10px;margin:16px 0 22px}
.pay-method{
  display:flex;align-items:center;gap:12px;padding:14px 16px;
  border:1px solid var(--theme-border-color);border-radius:var(--theme-border-radius-m);
  cursor:pointer;transition:all var(--transition);
}
.pay-method:hover{border-color:var(--vk-green)}
.pay-method.is-active{border-color:var(--vk-green);background:rgba(7,193,96,.04)}
.pay-method__icon{width:36px;height:36px;border-radius:10px;background:rgba(7,193,96,.12);color:var(--vk-green);display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto}
.pay-method__main{flex:1 1 auto}
.pay-method__name{font-size:14px;font-weight:500}
.pay-method__desc{font-size:12px;color:var(--vk-text-3)}
.pay-method__radio{width:18px;height:18px;border-radius:50%;border:2px solid var(--theme-border-color);flex:0 0 auto;position:relative}
.pay-method.is-active .pay-method__radio{border-color:var(--vk-green)}
.pay-method.is-active .pay-method__radio::after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--vk-green)}

.pay-qr{display:none;flex-direction:column;align-items:center;gap:12px;padding:18px;background:var(--vk-bg);border-radius:var(--theme-border-radius-l);margin-bottom:18px}
.pay-qr.is-show{display:flex}
.pay-qr__img{width:200px;height:200px;background:#fff;border-radius:8px;padding:8px;display:flex;align-items:center;justify-content:center}
.pay-qr__img canvas,.pay-qr__img img{width:100%!important;height:100%!important}
.pay-qr__tip{font-size:13px;color:var(--vk-text-2);display:flex;align-items:center;gap:6px}
.pay-qr__timer{font-size:12px;color:var(--vk-text-3)}
.pay-actions{display:flex;flex-direction:column;gap:10px}
.pay-tip{font-size:12px;color:var(--vk-text-3);text-align:center;margin-top:14px;line-height:1.7}
.pay-result{text-align:center;padding:40px 24px}
.pay-result__icon{font-size:52px;line-height:1}
.pay-result__title{font-size:20px;font-weight:600;margin:14px 0 6px}
.pay-result__desc{font-size:14px;color:var(--vk-text-3);margin-bottom:22px}
.pay-result__actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ---------- 用户中心 ---------- */
.dashboard{padding:26px 0 48px}
.dash-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:24px;align-items:flex-start}
.dash-side{background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card);overflow:hidden;position:sticky;top:calc(var(--header-height) + 16px)}
.dash-user{padding:22px;text-align:center;background:linear-gradient(150deg,#eef4ff,#f8fbff);border-bottom:1px solid var(--theme-line-color)}
.dash-user__avatar{width:70px;height:70px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:var(--shadow-sm)}
.dash-user__name{font-size:16px;font-weight:600;margin:10px 0 2px}
.dash-user__meta{font-size:12px;color:var(--vk-text-3)}
.dash-user__points{display:inline-flex;align-items:center;gap:5px;margin-top:8px;padding:3px 12px;border-radius:var(--radius-pill);background:rgba(255,138,0,.12);color:#a35a00;font-size:12px;font-weight:600}
.dash-nav{list-style:none;margin:0;padding:9px}
.dash-nav li{margin-bottom:2px}
.dash-nav a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:var(--theme-border-radius-m);font-size:14px;color:var(--vk-text-2);transition:all var(--transition)}
.dash-nav a:hover{background:var(--vk-bg);color:var(--theme-color)}
.dash-nav a.is-active{background:hsla(var(--theme-color-hsl),.09);color:var(--theme-color);font-weight:600}
.dash-nav .nav-icon{font-size:16px;width:20px;text-align:center}
.dash-nav .nav-badge{margin-left:auto;font-size:11px;padding:1px 7px;border-radius:var(--radius-pill);background:var(--vk-red);color:#fff}

.dash-main{min-width:0;display:flex;flex-direction:column;gap:20px}
.dash-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.dash-title{font-size:22px;font-weight:700;margin:0}
.dash-sub{font-size:13px;color:var(--vk-text-3);margin:4px 0 0}

.stat-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.stat-card{background:#fff;border-radius:var(--theme-border-radius-l);box-shadow:var(--shadow-card);padding:18px;display:flex;flex-direction:column;gap:4px;position:relative;overflow:hidden}
.stat-card::after{content:"";position:absolute;right:-18px;top:-18px;width:70px;height:70px;border-radius:50%;background:hsla(var(--theme-color-hsl),.07)}
.stat-card__label{font-size:13px;color:var(--vk-text-3)}
.stat-card__value{font-size:26px;font-weight:800;line-height:1.2;color:var(--vk-text)}
.stat-card__value small{font-size:13px;font-weight:500;color:var(--vk-text-3);margin-left:3px}
.stat-card__desc{font-size:12px;color:var(--vk-text-3)}
.stat-card--points .stat-card__value{color:var(--vk-orange)}
.stat-card--done .stat-card__value{color:var(--vk-green)}
.stat-card--time .stat-card__value{color:var(--theme-color)}

.dash-panel{background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card);overflow:hidden}
.dash-panel__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--theme-line-color);flex-wrap:wrap}
.dash-panel__title{font-size:16px;font-weight:600;margin:0}
.dash-panel__body{padding:20px}
.dash-panel__body--flush{padding:0}

.course-progress-list{display:flex;flex-direction:column}
.course-progress-item{display:flex;align-items:center;gap:14px;padding:16px 20px;border-bottom:1px solid var(--theme-line-color);transition:background var(--transition)}
.course-progress-item:last-child{border-bottom:0}
.course-progress-item:hover{background:hsla(var(--theme-color-hsl),.03)}
.course-progress-item__cover{width:96px;height:64px;border-radius:var(--theme-border-radius-m);object-fit:cover;flex:0 0 auto;background:var(--vk-bg-soft)}
.course-progress-item__main{flex:1 1 auto;min-width:0}
.course-progress-item__title{font-size:15px;font-weight:500;margin:0 0 6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.course-progress-item__title a{color:var(--vk-text)}
.course-progress-item__title a:hover{color:var(--theme-color)}
.course-progress-item__meta{font-size:12px;color:var(--vk-text-3);display:flex;gap:12px;flex-wrap:wrap;margin-bottom:7px}
.course-progress-item .progress-bar{max-width:280px}
.course-progress-item__action{flex:0 0 auto}

.my-course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:20px}
.my-course-card{display:flex;gap:14px;padding:14px;background:var(--vk-bg);border-radius:var(--theme-border-radius-l);border:1px solid transparent;transition:all var(--transition)}
.my-course-card:hover{background:#fff;border-color:hsla(var(--theme-color-hsl),.2);box-shadow:var(--shadow-sm)}
.my-course-card__cover{width:110px;height:74px;border-radius:var(--theme-border-radius-m);object-fit:cover;flex:0 0 auto}
.my-course-card__main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:5px}
.my-course-card__title{font-size:14px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.my-course-card__meta{font-size:12px;color:var(--vk-text-3)}
.my-course-card .progress-bar{height:6px}

.points-hero{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:26px;border-radius:var(--theme-border-radius-xl);color:#fff;
  background:linear-gradient(130deg,#ff9a3c,#ff7a45 60%,#ff5a5f);
}
.points-hero__num{font-size:44px;font-weight:800;line-height:1;letter-spacing:-1px}
.points-hero__label{font-size:13px;opacity:.9;margin-top:6px}
.points-hero__hint{font-size:13px;opacity:.95;background:rgba(255,255,255,.18);padding:8px 16px;border-radius:var(--radius-pill)}

.points-log{list-style:none;margin:0;padding:0}
.points-log li{display:flex;align-items:center;gap:12px;padding:13px 20px;border-bottom:1px solid var(--theme-line-color);font-size:14px}
.points-log li:last-child{border-bottom:0}
.points-log__icon{width:34px;height:34px;border-radius:10px;background:var(--vk-bg);display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto}
.points-log__main{flex:1 1 auto;min-width:0}
.points-log__note{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.points-log__time{font-size:12px;color:var(--vk-text-3)}
.points-log__amount{font-weight:700;font-size:15px;color:var(--vk-green);white-space:nowrap}
.points-log__amount.is-minus{color:var(--vk-red)}

/* 排行榜页 */
.rank-page{padding:30px 0 48px}
.rank-tabs{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}
.rank-tab{padding:8px 18px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--theme-line-color);font-size:14px;color:var(--vk-text-2);transition:all var(--transition)}
.rank-tab:hover{border-color:hsla(var(--theme-color-hsl),.4);color:var(--theme-color)}
.rank-tab.is-active{background:var(--theme-color);border-color:var(--theme-color);color:#fff}
.rank-podium{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:24px;align-items:end}
.podium-card{background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card);padding:24px 18px;text-align:center;position:relative;transition:transform var(--transition)}
.podium-card:hover{transform:translateY(-4px)}
.podium-card--1{order:2;padding-top:34px;background:linear-gradient(180deg,#fff8e6,#fff)}
.podium-card--2{order:1}
.podium-card--3{order:3}
.podium-card__crown{font-size:26px;line-height:1;margin-bottom:6px}
.podium-card__avatar{width:68px;height:68px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:var(--shadow-sm)}
.podium-card--1 .podium-card__avatar{width:80px;height:80px;border-color:#ffd666}
.podium-card__name{font-size:15px;font-weight:600;margin:10px 0 2px}
.podium-card__points{font-size:22px;font-weight:800;color:var(--vk-orange)}
.podium-card__points small{font-size:12px;font-weight:400;color:var(--vk-text-3);margin-left:2px}
.podium-card__rank{position:absolute;top:12px;left:14px;font-size:12px;font-weight:700;color:var(--vk-text-3)}
.podium-card--1 .podium-card__rank{color:#e8a300}

.rank-table{background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card);overflow:hidden}
.rank-table__row{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid var(--theme-line-color);font-size:14px;transition:background var(--transition)}
.rank-table__row:last-child{border-bottom:0}
.rank-table__row:hover{background:hsla(var(--theme-color-hsl),.03)}
.rank-table__row.is-me{background:hsla(var(--theme-color-hsl),.07)}
.rank-table__no{width:30px;text-align:center;font-weight:700;color:var(--vk-text-3);flex:0 0 auto}
.rank-table__avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.rank-table__name{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.rank-table__stat{font-size:12px;color:var(--vk-text-3);flex:0 0 auto}
.rank-table__points{font-weight:700;color:var(--vk-orange);font-size:15px;flex:0 0 auto;min-width:70px;text-align:right}

/* 订单列表 */
.order-list{display:flex;flex-direction:column}
.order-item{display:flex;align-items:center;gap:16px;padding:16px 20px;border-bottom:1px solid var(--theme-line-color);flex-wrap:wrap}
.order-item:last-child{border-bottom:0}
.order-item__main{flex:1 1 auto;min-width:0}
.order-item__title{font-size:15px;font-weight:500;margin:0 0 4px}
.order-item__meta{font-size:12px;color:var(--vk-text-3);display:flex;gap:14px;flex-wrap:wrap}
.order-item__amount{font-size:17px;font-weight:700;color:var(--vk-orange);white-space:nowrap}
.order-status{font-size:12px;padding:2px 10px;border-radius:var(--radius-pill)}
.order-status.is-pending{background:rgba(255,138,0,.12);color:var(--vk-orange)}
.order-status.is-paid{background:rgba(7,193,96,.12);color:var(--vk-green)}
.order-status.is-closed{background:var(--vk-bg-soft);color:var(--vk-text-3)}
.order-status.is-refunded{background:rgba(245,34,45,.1);color:var(--vk-red)}

/* 绑定微信 */
.bind-card{display:flex;align-items:center;gap:16px;padding:20px;border-radius:var(--theme-border-radius-l);background:var(--vk-bg);flex-wrap:wrap}
.bind-card__icon{width:48px;height:48px;border-radius:14px;background:rgba(7,193,96,.12);color:var(--vk-green);display:flex;align-items:center;justify-content:center;font-size:24px;flex:0 0 auto}
.bind-card__main{flex:1 1 auto;min-width:0}
.bind-card__title{font-size:15px;font-weight:600;margin:0 0 3px}
.bind-card__desc{font-size:13px;color:var(--vk-text-3);margin:0}

/* 表单表格 */
.dash-form{max-width:520px}
.dash-form .form-row{margin-bottom:16px}

/* 空状态（账户内） */
.dash-empty{padding:44px 20px;text-align:center;color:var(--vk-text-3);font-size:14px}

@media (max-width:1239px){
  .auth-card{max-width:860px;grid-template-columns:1fr 360px}
  .stat-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .auth-card{grid-template-columns:1fr;max-width:440px}
  .auth-side{display:none}
  .auth-main{padding:32px 26px}
  .dash-layout{grid-template-columns:1fr}
  .dash-side{position:static}
  .dash-nav{display:flex;overflow-x:auto;gap:4px;padding:8px}
  .dash-nav li{margin:0;flex:0 0 auto}
  .dash-nav a{white-space:nowrap;padding:9px 14px;font-size:13px}
  .dash-nav .nav-icon{display:none}
  .my-course-grid{grid-template-columns:1fr}
  .rank-podium{grid-template-columns:1fr;gap:10px}
  .podium-card--1,.podium-card--2,.podium-card--3{order:0;padding:16px;display:flex;align-items:center;gap:14px;text-align:left}
  .podium-card__avatar{width:52px!important;height:52px!important;margin:0}
  .podium-card__name{margin:0}
  .podium-card__crown{display:none}
  .podium-card__rank{position:static;font-size:12px}
}
@media (max-width:767px){
  .vk-auth{padding:24px 12px 40px}
  .auth-main{padding:26px 20px}
  .auth-main__title{font-size:19px}
  .wechat-qr{width:190px;height:190px}
  .stat-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .stat-card{padding:14px}
  .stat-card__value{font-size:21px}
  .pay-card__body{padding:18px}
  .pay-summary img{width:84px;height:58px}
  .pay-amount b{font-size:24px}
  .points-hero{padding:20px}
  .points-hero__num{font-size:34px}
  .course-progress-item{padding:13px 14px}
  .course-progress-item__cover{width:76px;height:52px}
  .course-progress-item__action{display:none}
  .my-course-grid{padding:14px}
  .rank-table__row{padding:12px 14px;gap:10px}
  .rank-table__stat{display:none}
  .order-item{padding:14px}
  .dash-head{gap:8px}
  .dash-title{font-size:19px}
}