/*
 * 融光入学评测 · 登录视觉层（校园温暖亲切风）
 * 重写自旧 SaaS 蓝绿风；保留全部既有类名（login + register 直接套用），
 * 新增 .portal-* 身份选择门户样式。
 */
:root {
    /* 友好校园蓝（主色） */
    --primary-50: #eef6fd;
    --primary-100: #d8ecfb;
    --primary-500: #5b9ee0;
    --primary-600: #3f82c8;
    /* 温暖蜜桃/草地（辅色，原 secondary 复用为暖色与教师色） */
    --secondary-50: #fff5ec;
    --secondary-100: #ffe7d2;
    --secondary-500: #f0a45f;
    --teacher-500: #57b894;
    --teacher-50: #ecf8f2;
    --teacher-100: #d4efe2;
    --admin-500: #e6a23c;
    --admin-50: #fdf4e3;
    --admin-100: #f8e6c4;
    /* 暖中性灰（带一点奶油底，比纯灰更亲切） */
    --neutral-50: #faf7f1;
    --neutral-100: #f1ebe0;
    --neutral-200: #e7ddcd;
    --neutral-300: #d6cab5;
    --neutral-400: #a99f8e;
    --neutral-500: #7f8a99;
    --neutral-600: #5d6b78;
    --neutral-700: #41505f;
    --neutral-800: #2e4057;
    --bg-base: #f7f2ea;
    --card-line: #efe6d7;
    --soft-shadow: 0 18px 44px -16px rgba(120, 96, 60, .28), 0 6px 14px -8px rgba(120, 96, 60, .14);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--neutral-800);
    background: var(--bg-base);
    font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

.mind-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-600);
    font-size: 22px;
    font-weight: 900;
}

.mind-logo svg {
    width: 34px;
    height: 34px;
    padding: 5px;
    fill: none;
    stroke: #fff;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2.5;
    background: linear-gradient(135deg, var(--primary-500), #7bb6ec);
    border-radius: 12px;
    box-shadow: 0 6px 14px -4px rgba(91, 158, 224, .5);
}

/* ============ 登录页主体（与门户一致：暖色渐变 + 居中单卡片） ============ */
.auth-page {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 40px 20px;
    background:
        radial-gradient(circle at 16% 14%, rgba(255, 233, 176, .7), transparent 40%),
        radial-gradient(circle at 84% 16%, rgba(143, 214, 168, .5), transparent 42%),
        radial-gradient(circle at 50% 116%, rgba(91, 158, 224, .34), transparent 56%),
        linear-gradient(165deg, #fdf7ec 0%, #f3ead8 100%);
}

.auth-page::before,
.auth-page::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    opacity: .45;
    filter: blur(1px);
    pointer-events: none;
}

.auth-page::before {
    width: 150px;
    height: 150px;
    top: 9%;
    left: 8%;
    background: radial-gradient(circle at 35% 30%, #fff, #ffd98a);
}

.auth-page::after {
    width: 110px;
    height: 110px;
    bottom: 10%;
    right: 9%;
    background: radial-gradient(circle at 35% 30%, #fff, #aee0c2);
}

/* 卡片内顶部 logo（取代旧左侧大图） */
.card-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 19px;
}

/* 身份徽标圆环（呼应门户卡片图标） */
.login-emblem {
    display: grid;
    place-items: center;
    width: 76px;
    height: 76px;
    margin: 0 auto 4px;
    border-radius: 50%;
}

.login-emblem svg {
    width: 40px;
    height: 40px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.login-card.student .login-emblem { color: var(--primary-600); background: var(--primary-50); }
.login-card.student .emblem-teacher { display: none; }
.login-card.teacher .login-emblem { color: #2f9e79; background: var(--teacher-50); }
.login-card.teacher .emblem-student { display: none; }

.auth-visual {
    position: relative;
    display: flex;
    flex: 1.05;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 48px;
    background:
        radial-gradient(circle at 20% 18%, rgba(255, 233, 176, .65), transparent 42%),
        radial-gradient(circle at 86% 22%, rgba(143, 214, 168, .42), transparent 44%),
        radial-gradient(circle at 50% 108%, rgba(91, 158, 224, .30), transparent 55%),
        linear-gradient(160deg, #fdf6ea 0%, #f3ead9 100%);
}

/* 漂浮装饰：柔和云朵/星星气泡 */
.auth-visual::before,
.auth-visual::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    opacity: .5;
}

.auth-visual::before {
    width: 130px;
    height: 130px;
    top: 12%;
    right: 14%;
    background: radial-gradient(circle at 35% 30%, #fff, #ffd98a);
}

.auth-visual::after {
    width: 84px;
    height: 84px;
    bottom: 16%;
    left: 12%;
    background: radial-gradient(circle at 35% 30%, #fff, #aee0c2);
}

.auth-visual .mind-logo {
    position: absolute;
    top: 30px;
    left: 32px;
    z-index: 2;
}

.visual-content {
    position: relative;
    z-index: 2;
    max-width: 520px;
    margin-top: 60px;
    text-align: center;
}

.brain-orb {
    display: grid;
    place-items: center;
    width: 230px;
    height: 230px;
    margin: 0 auto 34px;
    color: #5b9ee0;
    background: rgba(255, 255, 255, 0.72);
    border: 6px solid rgba(255, 255, 255, 0.92);
    border-radius: 50%;
    box-shadow: 0 26px 56px -18px rgba(120, 96, 60, .32);
}

.brain-orb svg {
    width: 120px;
    height: 120px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2.1;
}

.visual-content h1 {
    margin: 0 0 14px;
    color: var(--neutral-800);
    font-size: 32px;
    line-height: 1.35;
}

.visual-content p {
    margin: 0;
    color: var(--neutral-600);
    font-size: 17px;
    line-height: 1.85;
}

.auth-form-wrap {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
}

.auth-card {
    width: 100%;
    max-width: 446px;
    padding: 34px 32px;
    background: #fffdf9;
    border: 1px solid var(--card-line);
    border-radius: 22px;
    box-shadow: var(--soft-shadow);
}

.auth-card.wide {
    max-width: 560px;
}

.mobile-logo {
    display: none;
    justify-content: center;
    margin-bottom: 22px;
}

.card-head {
    padding: 4px 0 20px;
    text-align: center;
}

.card-head h1 {
    margin: 0;
    color: var(--neutral-800);
    font-size: 25px;
    line-height: 1.3;
    font-weight: 900;
}

.card-head p {
    margin: 9px 0 0;
    color: var(--neutral-500);
    font-size: 14px;
}

/* 角色切换胶囊 */
.role-switch {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    padding: 5px;
    background: var(--neutral-100);
    border-radius: 14px;
}

.role-switch button,
.role-switch a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 42px;
    color: var(--neutral-600);
    background: transparent;
    border: 0;
    border-radius: 11px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 800;
    text-align: center;
    transition: background .16s ease, color .16s ease, box-shadow .16s ease;
}

.role-switch button.active {
    color: var(--primary-600);
    background: #ffffff;
    box-shadow: 0 4px 10px -4px rgba(120, 96, 60, .3);
}

.role-switch a {
    color: var(--teacher-500);
}

.role-switch a:hover,
.role-switch button:hover {
    color: var(--primary-600);
}

.form-stack {
    display: grid;
    gap: 16px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.form-row {
    display: grid;
    gap: 7px;
}

.form-row label {
    color: var(--neutral-700);
    font-size: 14px;
    font-weight: 700;
}

.input-shell {
    position: relative;
}

.input-shell svg {
    position: absolute;
    left: 14px;
    top: 50%;
    width: 18px;
    height: 18px;
    color: var(--neutral-400);
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    transform: translateY(-50%);
}

.mind-input,
.mind-select {
    width: 100%;
    min-height: 46px;
    padding: 10px 14px;
    color: var(--neutral-800);
    background: #fffefb;
    border: 1.5px solid var(--neutral-200);
    border-radius: 12px;
    outline: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.input-shell .mind-input {
    padding-left: 42px;
}

.mind-input:focus,
.mind-select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(91, 158, 224, 0.16);
}

.mind-input::placeholder {
    color: var(--neutral-400);
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 0;
    color: var(--neutral-600);
    font-size: 14px;
}

.checkline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkline input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-500);
}

.form-options a,
.auth-foot a {
    color: var(--primary-600);
    font-weight: 800;
}

.primary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    min-height: 50px;
    color: #ffffff;
    background: linear-gradient(135deg, #6fb1ec, var(--primary-500));
    border: 0;
    border-radius: 14px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 14px 26px -10px rgba(91, 158, 224, .6);
    transition: transform .12s ease, box-shadow .16s ease, filter .16s ease;
}

.primary-btn:hover {
    filter: brightness(1.03);
    box-shadow: 0 18px 30px -10px rgba(91, 158, 224, .66);
}

.primary-btn:active {
    transform: scale(.985);
}

.primary-btn:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    box-shadow: none;
}

.auth-foot {
    margin-top: 22px;
    color: var(--neutral-500);
    font-size: 14px;
    text-align: center;
}

/* ============ 身份选择门户页 ============ */
.portal-page {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 40px 20px;
    background:
        radial-gradient(circle at 16% 14%, rgba(255, 233, 176, .7), transparent 40%),
        radial-gradient(circle at 84% 16%, rgba(143, 214, 168, .5), transparent 42%),
        radial-gradient(circle at 50% 116%, rgba(91, 158, 224, .34), transparent 56%),
        linear-gradient(165deg, #fdf7ec 0%, #f3ead8 100%);
}

.portal-page::before,
.portal-page::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    opacity: .45;
    filter: blur(1px);
    pointer-events: none;
}

.portal-page::before {
    width: 150px;
    height: 150px;
    top: 9%;
    left: 8%;
    background: radial-gradient(circle at 35% 30%, #fff, #ffd98a);
}

.portal-page::after {
    width: 110px;
    height: 110px;
    bottom: 10%;
    right: 9%;
    background: radial-gradient(circle at 35% 30%, #fff, #aee0c2);
}

.portal-head {
    position: relative;
    z-index: 2;
    margin-bottom: 34px;
    text-align: center;
}

.portal-head .mind-logo {
    font-size: 26px;
    margin-bottom: 18px;
}

.portal-head h1 {
    margin: 0 0 10px;
    color: var(--neutral-800);
    font-size: 30px;
    font-weight: 900;
    letter-spacing: .5px;
}

.portal-head p {
    margin: 0;
    color: var(--neutral-600);
    font-size: 16px;
}

.portal-cards {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    width: 100%;
    max-width: 860px;
}

.portal-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 30px 22px 26px;
    background: #fffdf9;
    border: 1.5px solid var(--card-line);
    border-radius: 24px;
    box-shadow: var(--soft-shadow);
    text-align: center;
    cursor: pointer;
    transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}

.portal-card:hover,
.portal-card:focus-visible {
    transform: translateY(-6px);
    outline: 0;
}

.portal-icon {
    display: grid;
    place-items: center;
    width: 96px;
    height: 96px;
    border-radius: 50%;
}

.portal-icon svg {
    width: 50px;
    height: 50px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.portal-card h2 {
    margin: 2px 0 0;
    font-size: 21px;
    font-weight: 900;
    color: var(--neutral-800);
}

.portal-card p {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--neutral-500);
}

.portal-go {
    margin-top: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
}

/* 三种身份配色 */
.portal-card.student { border-color: var(--primary-100); }
.portal-card.student .portal-icon { color: var(--primary-600); background: var(--primary-50); }
.portal-card.student .portal-go { background: linear-gradient(135deg, #6fb1ec, var(--primary-500)); }
.portal-card.student:hover { border-color: var(--primary-500); box-shadow: 0 26px 50px -18px rgba(91, 158, 224, .5); }

.portal-card.teacher { border-color: var(--teacher-100); }
.portal-card.teacher .portal-icon { color: #2f9e79; background: var(--teacher-50); }
.portal-card.teacher .portal-go { background: linear-gradient(135deg, #6fcfa8, var(--teacher-500)); }
.portal-card.teacher:hover { border-color: var(--teacher-500); box-shadow: 0 26px 50px -18px rgba(87, 184, 148, .5); }

.portal-card.admin { border-color: var(--admin-100); }
.portal-card.admin .portal-icon { color: #c98322; background: var(--admin-50); }
.portal-card.admin .portal-go { background: linear-gradient(135deg, #efb95f, var(--admin-500)); }
.portal-card.admin:hover { border-color: var(--admin-500); box-shadow: 0 26px 50px -18px rgba(230, 162, 60, .5); }

.portal-foot {
    position: relative;
    z-index: 2;
    margin-top: 30px;
    color: var(--neutral-500);
    font-size: 14px;
    text-align: center;
}

.portal-foot a {
    color: var(--primary-600);
    font-weight: 800;
}

/* ============ 注册页（沿用同套暖色） ============ */
.register-page {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 78px 24px 42px;
    background:
        radial-gradient(circle at 14% 12%, rgba(255, 233, 176, .55), transparent 40%),
        radial-gradient(circle at 88% 16%, rgba(143, 214, 168, .4), transparent 44%),
        linear-gradient(165deg, #fdf7ec 0%, #f3ead8 100%);
}

.register-page > .mind-logo {
    position: absolute;
    top: 30px;
    left: 32px;
}

.role-cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 6px 0 28px;
}

.role-card {
    display: flex;
    min-height: 166px;
    align-items: center;
    flex-direction: column;
    gap: 16px;
    justify-content: center;
    padding: 22px;
    color: var(--neutral-600);
    background: #fffdf9;
    border: 2px solid var(--neutral-100);
    border-radius: 18px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 800;
    transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

.role-card:hover {
    transform: translateY(-3px);
}

.role-card.active.student {
    color: var(--primary-600);
    background: var(--primary-50);
    border-color: var(--primary-500);
}

.role-card.active.teacher {
    color: #2f9e79;
    background: var(--teacher-50);
    border-color: var(--teacher-500);
}

.avatar-bubble {
    display: grid;
    place-items: center;
    width: 68px;
    height: 68px;
    background: var(--neutral-100);
    border-radius: 50%;
}

.role-card.active.student .avatar-bubble {
    background: var(--primary-100);
}

.role-card.active.teacher .avatar-bubble {
    background: var(--teacher-100);
}

.avatar-bubble svg {
    width: 38px;
    height: 38px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.step-panel[hidden] {
    display: none;
}

.back-btn {
    position: absolute;
    left: 26px;
    top: 30px;
    display: inline-flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    color: var(--neutral-500);
    background: #fffdf9;
    border: 1px solid var(--card-line);
    border-radius: 50%;
    cursor: pointer;
}

.back-btn:hover {
    color: var(--neutral-800);
}

.agreement {
    display: flex;
    gap: 9px;
    align-items: flex-start;
    padding: 4px 0 8px;
    color: var(--neutral-500);
    font-size: 12px;
    line-height: 1.7;
}

.teacher-fields[hidden],
.student-fields[hidden] {
    display: none;
}

/* ============ 响应式 ============ */
@media (max-width: 980px) {
    .auth-visual {
        display: none;
    }

    .mobile-logo {
        display: flex;
    }

    .portal-cards {
        grid-template-columns: 1fr;
        max-width: 420px;
    }

    .portal-card {
        flex-direction: row;
        text-align: left;
        gap: 16px;
        padding: 18px 20px;
    }

    .portal-icon {
        width: 64px;
        height: 64px;
        flex: 0 0 auto;
    }

    .portal-icon svg {
        width: 34px;
        height: 34px;
    }

    .portal-card > div {
        flex: 1;
    }

    .portal-go {
        margin-top: 8px;
    }
}

@media (max-width: 640px) {
    .register-page > .mind-logo {
        top: 18px;
        left: 18px;
    }

    .auth-card {
        padding: 26px 22px;
    }

    .portal-head h1 {
        font-size: 25px;
    }

    .form-grid,
    .role-cards {
        grid-template-columns: 1fr;
    }
}