/* ============================================
   登录页面样式
   ============================================ */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 100%;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

/* 左侧品牌展示区 */
.login-brand {
    background: linear-gradient(135deg, #0f3460 0%, #16213e 50%, #1a1a2e 100%);
    padding: var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-brand::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.brand-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.brand-logo {
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    width: 80px;
    height: 80px;
    color: var(--accent-blue);
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.6));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.brand-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-slogan {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

/* 角色展示区 */
.character-showcase {
    position: relative;
    width: 300px;
    height: 400px;
    margin: var(--spacing-xl) auto;
}

.character-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: breathe 3s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.8;
    }
}

.character-silhouette {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 300px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(123, 44, 191, 0.2) 100%);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    filter: blur(2px);
}

/* 装饰粒子 */
.decorative-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-blue);
    border-radius: 50%;
    animation: float 10s infinite;
}

.particle-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.particle-2 {
    top: 60%;
    left: 80%;
    animation-delay: 2s;
}

.particle-3 {
    top: 40%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-30px) translateX(20px);
        opacity: 0.7;
    }
}

/* 右侧表单区 */
.login-form-section {
    padding: var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-container {
    width: 100%;
    max-width: 400px;
}

/* 表单标签切换 */
.form-tabs {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-md) 0;
    background: transparent;
    color: var(--text-secondary);
    font-size: 18px;
    font-weight: 600;
    transition: color var(--duration-normal);
}

.tab-btn.active {
    color: var(--accent-blue);
}

.tab-indicator {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50%;
    height: 2px;
    background: var(--gradient-secondary);
    transition: transform var(--duration-normal) var(--ease-in-out);
}

.tab-btn:last-of-type.active ~ .tab-indicator {
    transform: translateX(100%);
}

/* 表单样式 */
.form {
    display: none;
}

.form.active {
    display: block;
    animation: fadeIn var(--duration-normal);
}

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

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    padding-left: 44px;
    padding-right: 44px;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.input-icon svg {
    width: 100%;
    height: 100%;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    padding: 4px;
    color: var(--text-tertiary);
}

.toggle-password:hover {
    color: var(--accent-blue);
}

.toggle-password svg {
    width: 20px;
    height: 20px;
}

.validation-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    display: none;
}

.validation-icon.success::after {
    content: '✓';
    color: var(--accent-green);
    font-size: 18px;
}

.validation-icon.error::after {
    content: '✗';
    color: var(--accent-red);
    font-size: 18px;
}

.input-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 密码强度指示器 */
.password-strength {
    margin-top: var(--spacing-sm);
}

.strength-bar {
    height: 4px;
    background: var(--bg-elevated);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.strength-fill {
    height: 100%;
    width: 0;
    border-radius: var(--radius-full);
    transition: all var(--duration-normal);
}

.strength-fill.weak {
    width: 33%;
    background: var(--accent-red);
}

.strength-fill.medium {
    width: 66%;
    background: var(--accent-yellow);
}

.strength-fill.strong {
    width: 100%;
    background: var(--accent-green);
}

.strength-text {
    font-size: 12px;
    color: var(--text-tertiary);
}

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

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.checkbox-wrapper input:checked + .checkbox-custom {
    background: var(--gradient-secondary);
    border-color: var(--accent-blue);
}

.checkbox-wrapper input:checked + .checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 12px;
}

.checkbox-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.forgot-password {
    font-size: 14px;
    color: var(--accent-blue);
}

.forgot-password:hover {
    text-decoration: underline;
}

/* 提交按钮 */
.btn-submit {
    width: 100%;
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.btn-submit .btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loader {
    display: block;
}

/* 分隔线 */
.form-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.form-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.form-divider span {
    position: relative;
    background: var(--bg-secondary);
    padding: 0 var(--spacing-md);
    font-size: 14px;
    color: var(--text-tertiary);
}

/* 第三方登录 */
.social-login {
    display: flex;
    gap: var(--spacing-md);
}

.social-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.social-btn svg {
    width: 20px;
    height: 20px;
}

.social-btn.steam:hover {
    border-color: #00adee;
    background: rgba(0, 173, 238, 0.1);
}

.social-btn.discord:hover {
    border-color: #5865f2;
    background: rgba(88, 101, 242, 0.1);
}

/* ============================================
   多步骤注册样式
   ============================================ */

/* 步骤指示器 */
.step-indicator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding: 0 var(--spacing-md);
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0.4;
    transition: all var(--duration-normal);
}

.step-item.active {
    opacity: 1;
}

.step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-elevated);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-tertiary);
    transition: all var(--duration-normal);
}

.step-item.active .step-circle {
    background: var(--gradient-secondary);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.step-label {
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
}

.step-line {
    flex: 1;
    height: 2px;
    background: var(--border-color);
    margin: 0 var(--spacing-sm);
}

/* 步骤内容 */
.step-content {
    animation: fadeIn 0.4s ease-out;
}

.step-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.step-description {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.btn-next,
.step-buttons {
    margin-top: var(--spacing-xl);
}

.step-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.step-buttons button {
    flex: 1;
}

/* 单选按钮组 */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.radio-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-elevated);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.radio-wrapper:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.05);
}

.radio-wrapper input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.radio-wrapper input:checked + .radio-custom {
    border-color: var(--accent-blue);
    background: var(--accent-blue);
}

.radio-wrapper input:checked + .radio-custom::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}

.radio-wrapper input:checked ~ .radio-label {
    color: var(--accent-blue);
}

.radio-label {
    font-size: 16px;
    color: var(--text-primary);
    transition: all var(--duration-fast);
}

/* MBTI问题 */
.mbti-question {
    padding: var(--spacing-lg);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.question-number {
    font-size: 12px;
    color: var(--accent-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.question-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.question-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.option-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.option-wrapper:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.05);
}

.option-wrapper input[type="radio"] {
    display: none;
}

.option-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    transition: all var(--duration-fast);
}

.option-wrapper input:checked + .option-custom {
    border-color: var(--accent-blue);
    background: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
}

.option-wrapper input:checked + .option-custom::after {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
    margin: 4px;
}

.option-text {
    font-size: 15px;
    color: var(--text-secondary);
    transition: all var(--duration-fast);
}

.option-wrapper input:checked ~ .option-text {
    color: var(--text-primary);
    font-weight: 500;
}

/* 完成页面 */
.completion-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.completion-icon {
    font-size: 80px;
    margin-bottom: var(--spacing-lg);
    animation: pulse 2s ease-in-out infinite;
}

.ai-profile-preview {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.preview-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid var(--accent-blue);
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}

.preview-avatar + h4 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.preview-mbti {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.mbti-badge {
    padding: 8px 24px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-full);
    font-size: 18px;
    font-weight: 700;
    color: white;
    letter-spacing: 2px;
}

.mbti-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

.completion-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: left;
}

.feature-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.feature-item span:last-child {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   社区页面样式
   ============================================ */

.community-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部导航栏 */
.header {
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    max-width: 1920px;
    margin: 0 auto;
}

/* Logo */
.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
}

.header-logo .logo-icon {
    width: 36px;
    height: 36px;
    color: var(--accent-blue);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 导航链接 */
.header-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-xl);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--duration-fast);
}

.nav-link svg {
    width: 20px;
    height: 20px;
}

.nav-link:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-blue);
}

/* 搜索框 */
.header-search {
    flex: 1;
    max-width: 600px;
    margin: 0 var(--spacing-xl);
    position: relative;
}

.search-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: 10px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-tertiary);
}

.search-btn svg {
    width: 20px;
    height: 20px;
}

.search-btn:hover {
    border-color: var(--border-hover);
}

.search-expanded {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.search-expanded.active {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
    padding: 10px 16px;
    background: var(--bg-elevated);
    border: 2px solid var(--border-focus);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-glow);
}

.search-close {
    background: transparent;
    padding: 8px;
    color: var(--text-secondary);
}

.search-close svg {
    width: 20px;
    height: 20px;
}

/* 用户信息区 */
.header-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.notification-btn {
    position: relative;
    background: transparent;
    padding: 8px;
    color: var(--text-secondary);
}

.notification-btn svg {
    width: 24px;
    height: 24px;
}

.notification-btn:hover {
    color: var(--accent-blue);
}

.notification-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    background: var(--accent-red);
    color: white;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    padding: 0 4px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 8px 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-normal);
}

.user-profile:hover {
    border-color: var(--border-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
}

.user-level {
    font-size: 12px;
    color: var(--text-tertiary);
}

.dropdown-icon {
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
}

/* 主容器 */
.main-container {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: var(--spacing-xl);
    max-width: 1920px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl);
    flex: 1;
    box-sizing: border-box;
    overflow-x: hidden;  /* 防止内容溢出 */
}

/* 响应式布局 */
@media (max-width: 1400px) {
    .main-container {
        grid-template-columns: 240px 1fr 280px;
    }
}

@media (max-width: 1200px) {
    .main-container {
        grid-template-columns: 200px 1fr;
    }

    .right-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
    }

    .login-brand {
        display: none;
    }

    .main-container {
        grid-template-columns: 1fr;
        padding: var(--spacing-md);
    }

    .sidebar {
        display: none;
    }

    .header-search {
        margin: 0 var(--spacing-md);
    }

    .user-info {
        display: none;
    }
}