/* 登录和注册页面样式 */

/* 基础字体设置 */
body {
    font-family: var(--font-family-default);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 左侧品牌宣传区域 */
.brand-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.brand-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="white" opacity="0.1"/><circle cx="80" cy="20" r="1" fill="white" opacity="0.1"/><circle cx="20" cy="80" r="1" fill="white" opacity="0.1"/><circle cx="80" cy="80" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-shapes::before,
.floating-shapes::after {
    content: '';
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-shapes::before {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-shapes::after {
    width: 150px;
    height: 150px;
    bottom: 20%;
    right: 10%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.brand-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    padding: 2rem;
    font-family: var(--font-family-default);
}

.brand-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    font-family: var(--font-family-default);
}

.brand-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-family: var(--font-family-default);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    font-family: var(--font-family-default);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.feature-text h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family-default);
}

.feature-text p {
    margin: 0;
    font-size: 0.85rem;
    opacity: 0.8;
    font-family: var(--font-family-default);
}

/* 登录区域样式 */
.login-section {
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family-default);
}

.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 450px;
    width: 100%;
}

.login-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 2rem 1.5rem 1rem;
    font-family: var(--font-family-default);
}

.login-header h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.8rem;
    font-weight: 600;
    font-family: var(--font-family-default);
}

.login-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.95rem;
    font-family: var(--font-family-default);
}

.login-body {
    padding: 2rem 1.5rem;
    font-family: var(--font-family-default);
}

/* Tab 样式 */
.nav-tabs {
    border-bottom: 2px solid #e9ecef;
    margin-bottom: 1.5rem;
    font-family: var(--font-family-default);
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 2px solid transparent;
    background: none;
    color: #6c757d;
    font-weight: 500;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    font-family: var(--font-family-default);
}

.nav-tabs .nav-link.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background: none;
    font-family: var(--font-family-default);
}

.nav-tabs .nav-link:hover {
    color: #667eea;
    border-color: transparent;
    font-family: var(--font-family-default);
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    font-family: var(--font-family-default);
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
}

.input-group .form-control:focus {
    border-color: #667eea;
    box-shadow: none;
}

.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    font-family: var(--font-family-default);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    font-family: var(--font-family-default);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
    background: transparent;
    font-family: var(--font-family-default);
}

.btn-outline-primary:hover {
    background: #667eea;
    border-color: #667eea;
    color: white;
}

/* 验证码按钮样式 */
.btn-verify {
    background: #28a745;
    border: none;
    color: white;
    font-family: var(--font-family-default);
}

.btn-verify:hover {
    background: #218838;
}

.btn-verify:disabled {
    background: #6c757d;
    border-color: #6c757d;
    cursor: not-allowed;
}

/* 密码强度指示器 */
.password-strength {
    height: 4px;
    border-radius: 2px;
    margin-top: 0.5rem;
    background: #e9ecef;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.strength-weak { background: #dc3545; width: 25%; }
.strength-fair { background: #ffc107; width: 50%; }
.strength-good { background: #17a2b8; width: 75%; }
.strength-strong { background: #28a745; width: 100%; }

/* 响应式设计 */
@media (max-width: 768px) {
    .brand-content h1 {
        font-size: 2rem;
    }
    
    .brand-content p {
        font-size: 1rem;
    }
    
    .login-card {
        margin: 1rem;
        border-radius: 8px;
    }
    
    .login-header {
        padding: 1.5rem 1rem 0.75rem;
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
    
    .login-body {
        padding: 1.5rem 1rem;
    }
}

/* 错误和成功消息样式 */
.alert {
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-family: var(--font-family-default);
}

.text-danger {
    color: #dc3545 !important;
    font-size: 0.875rem;
    font-family: var(--font-family-default);
}

/* 加载动画 */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: button-loading-spinner 1s ease infinite;
}

@keyframes button-loading-spinner {
    from { transform: rotate(0turn); }
    to { transform: rotate(1turn); }
}