/* ==================== 登录/注册页面样式 ==================== */

/* 登录页面 Hero 区域 */
.login-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, var(--darker-bg) 0%, #1a1a2e 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: 0 20px;
}

.login-logo {
    margin-bottom: 30px;
}

.login-logo .logo-icon {
    font-size: 4rem;
    margin-bottom: 15px;
    display: block;
}

.login-logo .logo-text {
    font-family: 'EnglishRegular', 'Chinese';
    font-size: 2rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 登录卡片 */
.login-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* 标签切换 */
.login-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 5px;
}

.tab-btn {
    flex: 1;
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-radius: 10px;
    color: var(--text-secondary);
    font-family: 'EnglishRegular', 'Chinese';
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

/* 表单内容 */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 表单组 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.required {
    color: #ff6b6b;
    margin-left: 4px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.2);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input.error {
    border-color: #ff6b6b;
    box-shadow: 0 0 10px rgba(255, 107, 107, 0.2);
}

/* 提交按钮 */
.submit-btn {
    width: 100%;
    padding: 16px 40px;
    background: var(--gradient-1);
    border: none;
    border-radius: 12px;
    color: white;
    font-family: 'EnglishRegular', 'Chinese';
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    margin-top: 25px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(108, 92, 231, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.submit-btn .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 错误提示 */
.error-message {
    color: #ff6b6b;
    font-size: 0.85rem;
    margin-top: 6px;
    display: none;
}

.error-message.show {
    display: block;
}

/* 全局错误提示 */
.global-error {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 20px;
    color: #ff6b6b;
    font-size: 0.9rem;
    display: none;
}

.global-error.show {
    display: block;
}

/* 成功提示 */
.global-success {
    background: rgba(0, 206, 201, 0.1);
    border: 1px solid rgba(0, 206, 201, 0.3);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 20px;
    color: #00cec9;
    font-size: 0.9rem;
    display: none;
}

.global-success.show {
    display: block;
}

/* 返回链接 */
.back-link {
    text-align: center;
    margin-top: 25px;
}

.back-link a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.back-link a:hover {
    color: var(--accent-color);
}

/* 响应式 */
@media (max-width: 768px) {
    .login-hero {
        padding: 120px 0 60px;
    }

    .login-card {
        padding: 30px 25px;
    }

    .login-logo .logo-icon {
        font-size: 3rem;
    }

    .login-logo .logo-text {
        font-size: 1.6rem;
    }

    .tab-btn {
        padding: 10px 18px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 25px 20px;
    }

    .form-group input {
        padding: 12px 15px;
    }

    .submit-btn {
        padding: 14px 30px;
        font-size: 1rem;
    }
}