/* ==========================================================================
   登录页面 - 全新设计
   设计理念：沉浸式、玻璃态、现代感
   ========================================================================== */

/* 设计令牌 */
:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent: #f59e0b;
    --bg-start: #0f172a;
    --bg-mid: #1e293b;
    --bg-end: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.15);
    --input-focus: rgba(99, 102, 241, 0.5);
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --radius: 16px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-mid) 50%, var(--bg-end) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow: hidden;
}

/* 动态背景 */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    bottom: -150px;
    right: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.05);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

/* 主容器 */
.login-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--glass-bg);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
    min-height: 600px;
}

/* 左侧品牌区 */
.login-left {
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
    position: relative;
    overflow: hidden;
}

.login-left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
    pointer-events: none;
}

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

.brand-logo {
    margin-bottom: 32px;
}

.brand-logo img {
    height: 48px;
    filter: brightness(0) invert(1);
}

.brand-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
    display: block;
}

.feature-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* 右侧表单区 */
.login-right {
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.form-header {
    margin-bottom: 40px;
}

.form-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

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

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

.form-group {
    position: relative;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.input-wrapper:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.08);
}

.input-wrapper.focused {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: color 0.3s ease;
}

.input-wrapper.focused .input-icon {
    color: var(--primary-light);
}

.form-input {
    flex: 1;
    height: 52px;
    padding: 0 16px;
    border: none;
    background: transparent;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    font-family: inherit;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.password-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.3s ease;
    flex-shrink: 0;
}

.password-toggle:hover {
    color: var(--text-secondary);
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.remember-me input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.checkbox-custom::after {
    content: '';
    width: 12px;
    height: 8px;
    border: 2px solid white;
    border-top: none;
    border-right: none;
    transform: rotate(-45deg) scale(0);
    transition: transform 0.2s ease;
}

.remember-me input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.remember-me input[type="checkbox"]:checked + .checkbox-custom::after {
    transform: rotate(-45deg) scale(1);
}

.remember-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.login-button {
    width: 100%;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-top: 8px;
}

.login-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
}

.login-button:hover::before {
    left: 100%;
}

.login-button:active {
    transform: translateY(0);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.button-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}

.login-button.loading .loading-spinner {
    display: block;
}

.login-button.loading .button-text {
    display: none;
}

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

.form-footer {
    margin-top: 32px;
    text-align: center;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 8px 12px;
    border-radius: 8px;
}

.footer-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.footer-divider {
    color: var(--text-muted);
    opacity: 0.3;
}

.copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.7;
}

/* Toast通知 */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    padding: 16px 20px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    color: #1e293b;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 420px;
    transform: translateX(0);
    opacity: 1;
    transition: all 0.3s ease;
    border-left: 4px solid var(--text-muted);
}

.toast-success {
    border-left-color: var(--success);
    background: rgba(16, 185, 129, 0.95);
    color: white;
}

.toast-warning {
    border-left-color: var(--warning);
    background: rgba(245, 158, 11, 0.95);
    color: white;
}

.toast-error {
    border-left-color: var(--error);
    background: rgba(239, 68, 68, 0.95);
    color: white;
}

.toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.toast-exit {
    transform: translateX(100%);
    opacity: 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .login-container {
        max-width: 900px;
    }
    
    .login-left, .login-right {
        padding: 40px;
    }
    
    .brand-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .login-wrapper {
        padding: 20px;
    }
    
    .login-container {
        grid-template-columns: 1fr;
        max-width: 480px;
    }
    
    .login-left {
        padding: 32px 24px;
        text-align: center;
    }
    
    .brand-logo {
        display: flex;
        justify-content: center;
    }
    
    .brand-title {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .feature-card {
        padding: 16px;
    }
    
    .login-right {
        padding: 32px 24px;
    }
    
    .form-header {
        margin-bottom: 28px;
    }
    
    .form-title {
        font-size: 1.5rem;
    }
    
    .input-wrapper {
        height: 48px;
    }
    
    .input-icon, .password-toggle {
        width: 48px;
        height: 48px;
    }
    
    .form-input {
        height: 48px;
    }
    
    .login-button {
        height: 52px;
    }
}

@media (max-width: 480px) {
    .login-wrapper {
        padding: 16px;
    }
    
    .login-container {
        border-radius: 20px;
    }
    
    .login-left, .login-right {
        padding: 24px 20px;
    }
    
    .brand-title {
        font-size: 1.5rem;
    }
    
    .brand-subtitle {
        font-size: 0.95rem;
        margin-bottom: 24px;
    }
    
    .features-grid {
        display: none;
    }
    
    .form-header {
        margin-bottom: 24px;
    }
    
    .login-form {
        gap: 18px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 12px;
    }
    
    .toast-container {
        top: 16px;
        right: 16px;
        left: 16px;
    }
    
    .toast {
        min-width: auto;
        max-width: 100%;
    }
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.3s; opacity: 0; }
.animate-delay-4 { animation-delay: 0.4s; opacity: 0; }
.animate-delay-5 { animation-delay: 0.5s; opacity: 0; }

/* 无障碍 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --glass-bg: rgba(0, 0, 0, 0.9);
        --glass-border: rgba(255, 255, 255, 0.5);
        --input-bg: rgba(255, 255, 255, 0.15);
        --input-border: rgba(255, 255, 255, 0.5);
    }
    
    .input-wrapper {
        border-width: 3px;
    }
    
    .checkbox-custom {
        border-width: 3px;
    }
}