/* ========================================
   房山区电力装备制造业联合会 - 登录页面样式
   ======================================== */

/* CSS变量 */
:root {
    /* 主色调 */
    --primary-color: #155DFC;
    --primary-dark: #1447E6;
    --primary-gradient: linear-gradient(135deg, #155DFC 0%, #1447E6 100%);
    --primary-gradient-horizontal: linear-gradient(90deg, #155DFC 0%, #1447E6 100%);
    
    /* 文字颜色 */
    --text-primary: #101828;
    --text-secondary: #4A5565;
    --text-tertiary: #6A7282;
    --text-muted: #364153;
    
    /* 背景色 */
    --bg-white: #FFFFFF;
    --bg-light: #F3F4F6;
    --bg-gradient: linear-gradient(135deg, #EFF6FF 0%, white 50%, #EFF6FF 100%);
    --bg-dark: linear-gradient(135deg, #101828 0%, #1E2939 100%);
    
    /* 边框色 */
    --border-color: #E5E7EB;
    --border-light: #E4E7ED;
    --border-outline: #F3F4F6;
    
    /* 阴影 */
    --shadow-sm: 0px 4px 6px -4px rgba(0, 0, 0, 0.10), 0px 10px 15px -3px rgba(0, 0, 0, 0.10);
    --shadow-md: 0px 8px 10px -6px rgba(0, 0, 0, 0.10), 0px 20px 25px -5px rgba(0, 0, 0, 0.10);
    --shadow-primary: 0px 4px 6px -4px rgba(43, 127, 255, 0.30), 0px 10px 15px -3px rgba(43, 127, 255, 0.30);
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
    outline: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.navbar-container {
    max-width: 1352px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0052D9 0%, #155DFC 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-icon img {
    width: 24px;
    height: 24px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 15px;
    font-weight: 500;
    color: #1A1A2E;
    line-height: 1.25;
}

.logo-subtitle {
    font-size: 11px;
    font-weight: 400;
    color: #5E6C84;
    line-height: 1.25;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 14px;
    font-weight: 400;
    color: rgba(26, 26, 46, 0.80);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link.active {
    color: #1447E6;
    font-weight: 500;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: #0052D9;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 14px;
    font-weight: 400;
    transition: background var(--transition-fast);
}

.nav-btn:hover {
    background: var(--primary-dark);
}

.nav-btn-icon {
    width: 16px;
    height: 16px;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ========================================
   主内容区
   ======================================== */
.main-content {
    flex: 1;
    background: var(--bg-gradient);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 80px 24px 80px;
    min-height: calc(100vh - 64px - 392px);
}

.login-container {
    width: 100%;
    max-width: 448px;
}

/* 登录头部 */
.login-header {
    text-align: center;
    margin-bottom: 24px;
}

.login-logo {
    margin-bottom: 24px;
}

.login-logo-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto;
    background: var(--primary-gradient);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-logo-icon img {
    width: 32px;
    height: 32px;
}

.login-title {
    font-size: 30px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    background: var(--text-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-secondary);
    background: var(--text-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 登录卡片 */
.login-card {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-outline);
    padding: 33px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.input-icon img {
    width: 20px;
    height: 20px;
}

.form-input {
    width: 100%;
    height: 54px;
    padding: 0 48px 0 48px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 400;
    color: var(--text-primary);
    background: var(--bg-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
    color: rgba(26, 26, 46, 0.50);
}

.form-input:hover {
    border-color: var(--primary-color);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(21, 93, 252, 0.1);
}

.form-input.error {
    border-color: #EF4444;
}

.form-input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.toggle-password {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.toggle-password img {
    width: 20px;
    height: 20px;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.toggle-password:hover img {
    opacity: 1;
}

.error-message {
    font-size: 13px;
    color: #EF4444;
    min-height: 18px;
}

/* 表单选项 */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-input:checked + .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-custom::after {
    content: '';
    width: 8px;
    height: 5px;
    border-left: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(-45deg) translate(1px, -1px);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.checkbox-input:checked + .checkbox-custom::after {
    opacity: 1;
}

.checkbox-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.forgot-password {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

.forgot-password:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    height: 52px;
    background: var(--primary-gradient-horizontal);
    box-shadow: var(--shadow-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: white;
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.login-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0px 6px 8px -4px rgba(43, 127, 255, 0.40), 0px 12px 18px -5px rgba(43, 127, 255, 0.35);
}

.login-btn:active:not(:disabled) {
    transform: translateY(0);
}

.login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-btn.loading {
    pointer-events: none;
}

.login-btn.loading .btn-icon {
    animation: spin 1s linear infinite;
}

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

.btn-icon {
    width: 20px;
    height: 20px;
}

/* 注册链接 */
.register-link {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-outline);
}

.register-link span {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
}

.register-link a {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    margin-left: 4px;
}

.register-link a:hover {
    text-decoration: underline;
}

/* 服务条款 */
.terms-section {
    width: 100%;
    text-align: center;
    margin-top: 24px;
    margin-bottom: 120px;
}

.terms-section p {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-tertiary);
}

.terms-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 4px;
}

.terms-links a {
    font-size: 12px;
    font-weight: 400;
    color: var(--primary-color);
}

.terms-links a:hover {
    text-decoration: underline;
}

.terms-links span {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-tertiary);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--bg-dark);
    padding: 48px 24px 0;
}

.footer-container {
    max-width: 1352px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-contact {
    max-width: 512px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0052D9 0%, #155DFC 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.footer-logo-icon img {
    width: 24px;
    height: 24px;
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
}

.footer-logo-title {
    font-size: 15px;
    font-weight: 500;
    color: white;
    line-height: 1.25;
}

.footer-logo-subtitle {
    font-size: 11px;
    font-weight: 400;
    color: white;
    opacity: 0.7;
    line-height: 1.25;
}

.footer-desc {
    font-size: 13px;
    font-weight: 400;
    color: white;
    opacity: 0.7;
    line-height: 1.6;
    margin-bottom: 24px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.8;
}

.contact-item img {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.contact-item span {
    font-size: 13px;
    font-weight: 400;
    color: white;
}

.footer-title {
    font-size: 15px;
    font-weight: 500;
    color: white;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 13px;
    font-weight: 400;
    color: white;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
}

/* 版权信息 */
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: 12px;
    font-weight: 400;
    color: white;
    opacity: 0.6;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-bottom-links a {
    font-size: 12px;
    font-weight: 400;
    color: white;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.footer-bottom-links a:hover {
    opacity: 1;
}

.footer-bottom-links span {
    font-size: 12px;
    font-weight: 400;
    color: white;
    opacity: 0.6;
}

/* ========================================
   Toast 提示
   ======================================== */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 2000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-width: 280px;
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-icon.success::before {
    content: '✓';
    color: #10B981;
    font-size: 18px;
    font-weight: bold;
}

.toast-icon.error::before {
    content: '✕';
    color: #EF4444;
    font-size: 18px;
    font-weight: bold;
}

.toast-message {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .footer-contact {
        grid-column: span 2;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 0 16px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 65px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 16px;
        gap: 16px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-sm);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-btn {
        width: 100%;
        justify-content: center;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .main-content {
        padding: 40px 16px 80px;
    }
    
    .login-card {
        padding: 24px;
    }
    
    .login-title {
        font-size: 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-contact {
        grid-column: span 1;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
    
    .form-options {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    
    .terms-links {
        flex-wrap: wrap;
    }
}

/* ========================================
   注册页面
   ======================================== */
.register-page {
    min-height: auto;
}

.register-container {
    width: 100%;
    max-width: 672px;
}

.register-header {
    text-align: center;
    margin-bottom: 24px;
}

.register-logo {
    margin-bottom: 24px;
}

.register-logo-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto;
    background: var(--primary-gradient);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.register-logo-icon img {
    width: 32px;
    height: 32px;
}

.register-title {
    font-size: 30px;
    font-weight: 600;
    background: var(--text-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.register-subtitle {
    font-size: 16px;
    font-weight: 400;
    background: var(--text-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.register-card {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-outline);
    padding: 33px;
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.required {
    color: #FB2C36;
}

.link {
    color: var(--primary-color);
    cursor: pointer;
}

.link:hover {
    text-decoration: underline;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.account-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 12px;
}

.account-type-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 18px 12px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.account-type-card:hover {
    border-color: var(--primary-color);
}

.account-type-card.selected {
    background: #EFF6FF;
    border-color: var(--primary-color);
    box-shadow: 0px 2px 4px -2px rgba(0, 0, 0, 0.10);
}

.account-type-card input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.type-icon {
    width: 24px;
    height: 24px;
    margin-bottom: 12px;
}

.type-icon img {
    width: 24px;
    height: 24px;
}

.type-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.account-type-card.selected .type-name {
    color: var(--primary-color);
}

/* 未选中时图标变灰 */
.account-type-card:not(.selected) .type-icon img {
    filter: grayscale(100%) opacity(0.5);
}

/* 企业账号、高校、服务机构、政府选中时图标变蓝 */
.account-type-card[data-type="enterprise"].selected .type-icon img,
.account-type-card[data-type="university"].selected .type-icon img,
.account-type-card[data-type="service"].selected .type-icon img,
.account-type-card[data-type="government"].selected .type-icon img {
    filter: brightness(0) saturate(100%) invert(47%) sepia(98%) saturate(1925%) hue-rotate(205deg) brightness(99%) contrast(97%);
}

.type-desc {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-tertiary);
}

.agreement-checkbox {
    align-items: flex-start;
}

.agreement-checkbox .checkbox-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    line-height: 1.5;
}

.register-btn {
    width: 100%;
    height: 52px;
    background: var(--primary-gradient-horizontal);
    box-shadow: var(--shadow-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: white;
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-top: 4px;
}

.register-btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.register-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-link {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-outline);
}

.login-link span {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
}

.login-link a {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    margin-left: 4px;
}

.login-link a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .register-card {
        padding: 24px;
    }
    
    .register-title {
        font-size: 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .account-types {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .account-types {
        grid-template-columns: 1fr;
    }
}