/* ============================================================
   AstroBody — 登录页样式 (Login) · 顶级UI版
   ============================================================ */

/* ---------- 顶部导航（极简） ---------- */
.top-nav.minimal {
    border-bottom: none;
    padding: var(--space-md) 0;
}

.top-nav.minimal .brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.top-nav.minimal .brand .logo-icon {
    font-size: 1.2rem;
    opacity: 0.8;
}

.nav-link.ghost {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    letter-spacing: 0.01em;
}

.nav-link.ghost:hover {
    color: var(--brand-dark);
}

/* ---------- 登录区域（双栏布局） ---------- */
.login-section {
    display: flex;
    align-items: stretch;
    gap: var(--space-2xl);
    min-height: calc(100vh - 80px);
    min-height: calc(100dvh - 80px);
    padding: var(--space-xl) 0;
}

/* ---------- 左侧品牌信息 ---------- */
.login-brand-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: var(--space-xl);
    border-right: 1px solid var(--border-color);
}

.brand-badge {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.brand-headline {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--brand-dark);
    margin-bottom: var(--space-sm);
}

.brand-subline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* 信任标识 */
.brand-testimonial {
    margin-top: var(--space-md);
}

.testimonial-avatars {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: var(--space-xs);
}

.testimonial-avatars .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    border: 2px solid var(--bg-primary);
    margin-left: -6px;
}
.testimonial-avatars .avatar:first-child {
    margin-left: 0;
}

.avatar-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    margin-left: var(--space-sm);
}

.testimonial-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.8;
}

/* ---------- 右侧登录表单 ---------- */
.login-form-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 400px;
}

.form-header {
    margin-bottom: var(--space-lg);
}

.form-header .form-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--brand-dark);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xs);
}

.form-header .form-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ---------- 浮动标签输入 ---------- */
.form-group.floating {
    position: relative;
    margin-bottom: var(--space-lg);
}

.floating-input {
    width: 100%;
    padding: 18px 0 8px 0;
    border: none;
    border-bottom: 2px solid var(--border-color);
    background: transparent;
    font-size: 1rem;
    font-weight: 500;
    color: var(--brand-dark);
    outline: none;
    transition: border-color 0.3s ease;
    font-family: var(--font-family);
}

.floating-input:focus {
    border-bottom-color: var(--brand-gold);
}

.floating-input:focus + .floating-label,
.floating-input:not(:placeholder-shown) + .floating-label {
    transform: translateY(-18px) scale(0.85);
    color: var(--brand-gold);
}

.floating-label {
    position: absolute;
    left: 0;
    bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-tertiary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    font-weight: 400;
    transform-origin: left bottom;
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--brand-gold);
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-input:focus ~ .input-line {
    width: 100%;
}

.form-group.floating .error-message {
    font-size: 0.75rem;
    color: #E74C3C;
    margin-top: var(--space-xs);
    display: none;
}

.form-group.floating .error-message.show {
    display: block;
}

.form-group.floating.has-error .floating-input {
    border-bottom-color: #E74C3C;
}

/* ---------- 表单选项 ---------- */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--space-sm) 0 var(--space-lg);
}

/* 自定义复选框 */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.checkbox-label input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.checkbox-label input:checked + .checkmark {
    background: var(--brand-dark);
    border-color: var(--brand-dark);
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: 700;
}

.forgot-link {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    font-weight: 500;
    transition: color 0.2s ease;
}

.forgot-link:hover {
    color: var(--brand-dark);
}

/* ---------- 登录按钮 ---------- */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    background: var(--brand-dark);
    color: var(--text-white);
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(26, 26, 46, 0.15);
    margin-bottom: var(--space-lg);
}

.btn-login:hover {
    background: #2A2A4A;
    box-shadow: 0 8px 32px rgba(26, 26, 46, 0.25);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: scale(0.98);
}

.btn-login .btn-arrow {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
}

.btn-login:hover .btn-arrow {
    transform: translateX(4px);
}

/* ---------- 分割线 ---------- */
.form-divider {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin: var(--space-md) 0;
    position: relative;
}

.form-divider::before,
.form-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background: var(--border-color);
}

.form-divider::before {
    left: 0;
}
.form-divider::after {
    right: 0;
}

/* ---------- Google 登录按钮 ---------- */
.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: 14px 32px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-google:hover {
    border-color: var(--brand-dark);
    background: var(--bg-input);
}

.btn-google .google-icon {
    font-weight: 700;
    color: var(--brand-dark);
    font-size: 1.1rem;
}

/* ---------- 底部链接 ---------- */
.form-footer-link {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 0.9rem;
    color: var(--text-tertiary);
}

.form-footer-link a {
    color: var(--brand-dark);
    font-weight: 600;
    transition: color 0.2s ease;
}

.form-footer-link a:hover {
    color: var(--brand-gold);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .login-section {
        flex-direction: column;
        gap: var(--space-lg);
        padding: var(--space-md) 0;
        min-height: auto;
    }

    .login-brand-side {
        padding-right: 0;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: var(--space-lg);
    }

    .brand-headline {
        font-size: 2.2rem;
    }

    .login-form-panel {
        max-width: 100%;
        padding: 0;
    }
}

@media (max-width: 480px) {
    .brand-headline {
        font-size: 1.8rem;
    }
    .form-header .form-title {
        font-size: 1.5rem;
    }
    .login-brand-side .brand-badge {
        font-size: 0.6rem;
    }
    .btn-login {
        padding: 14px 24px;
    }
}