:root {
    --login-bg: #eef3fb;
    --login-card: rgba(255, 255, 255, 0.92);
    --login-border: #d8e0ee;
    --login-text: #0f172a;
    --login-muted: #64748b;
    --login-primary: #2f66ff;
    --login-primary-2: #3f86ff;
    --login-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

html, body {
    margin: 0;
    padding: 0;
}

    body.admin-login-body {
        min-height: 100vh;
        background: linear-gradient(180deg, #f5f8fd 0%, #eaf0f8 100%);
        font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
        color: var(--login-text);
    }

.admin-login-body * {
    box-sizing: border-box;
}

.admin-login-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 42px;
    align-items: center;
    padding: 48px;
}

.admin-login-left {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.brand-block h1 {
    margin: 0 0 16px;
    font-size: 52px;
    line-height: 1.1;
    font-weight: 800;
    color: #102041;
}

.brand-block p {
    margin: 0;
    max-width: 760px;
    font-size: 18px;
    line-height: 1.9;
    color: var(--login-muted);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 8px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(216, 224, 238, 0.9);
    border-radius: 28px;
    padding: 24px 26px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

    .feature-card h5 {
        margin: 0 0 10px;
        font-size: 18px;
        font-weight: 800;
        color: #102041;
    }

    .feature-card p {
        margin: 0;
        color: var(--login-muted);
        line-height: 1.8;
    }

.admin-login-right {
    display: flex;
    justify-content: center;
}

.login-card {
    width: 100%;
    max-width: 560px;
    background: var(--login-card);
    border: 1px solid rgba(216, 224, 238, 0.9);
    border-radius: 34px;
    padding: 40px 36px 28px;
    box-shadow: var(--login-shadow);
    backdrop-filter: blur(10px);
}

.login-card-header {
    margin-bottom: 24px;
}

    .login-card-header h2 {
        margin: 0 0 10px;
        font-size: 30px;
        font-weight: 800;
        color: #102041;
    }

    .login-card-header p {
        margin: 0;
        color: var(--login-muted);
        font-size: 16px;
    }

.login-error-box {
    margin-bottom: 18px;
    font-size: 14px;
    line-height: 1.6;
    padding: 14px 16px;
}

.form-label {
    margin-bottom: 8px;
    font-size: 15px;
    color: #111827;
    font-weight: 700;
}

.form-control {
    min-height: 58px;
    border-radius: 18px;
    border: 1px solid var(--login-border);
    background: #fff;
    padding-left: 18px;
    padding-right: 18px;
    font-size: 16px;
    box-shadow: none;
}

    .form-control:focus {
        border-color: #8fb2ff;
        box-shadow: 0 0 0 4px rgba(47, 102, 255, 0.12);
    }

.remember-row {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 24px;
}

.remember-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--login-primary);
    flex: 0 0 auto;
}

.remember-label {
    margin: 0;
    font-size: 15px;
    color: var(--login-text);
    cursor: pointer;
    user-select: none;
}

.btn-admin-primary {
    min-height: 56px;
    border: none;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-2) 100%);
    color: #fff;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 16px 30px rgba(47, 102, 255, 0.24);
}

    .btn-admin-primary:hover {
        color: #fff;
        filter: brightness(1.02);
    }

.login-footer-note {
    margin-top: 20px;
    text-align: center;
    color: var(--login-muted);
    font-size: 14px;
}

@media (max-width: 1200px) {
    .admin-login-shell {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }

    .brand-block h1 {
        font-size: 40px;
    }

    .login-card {
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    .admin-login-shell {
        padding: 20px 16px;
        gap: 24px;
    }

    .feature-card {
        padding: 18px;
        border-radius: 20px;
    }

    .login-card {
        padding: 26px 18px 20px;
        border-radius: 22px;
    }

    .brand-block h1 {
        font-size: 32px;
    }
}