/* Page-specific styles from login.html */
/* 页面特有样式；设计系统见 collectx.css */
        html, body {
            height: 100%;
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* ========== 背景效果 ========== */
        .bg-grid {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(rgba(0, 217, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 217, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            pointer-events: none;
            z-index: 0;
        }

        .bg-gradient {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(ellipse 80% 50% at 20% 20%, var(--glow-cyan), transparent),
                radial-gradient(ellipse 60% 40% at 80% 80%, var(--glow-purple), transparent);
            pointer-events: none;
            z-index: 0;
        }

        .floating-orb {
            position: fixed;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.35;
            animation: float 20s ease-in-out infinite;
            pointer-events: none;
        }

        .orb-1 {
            width: 350px;
            height: 350px;
            background: var(--accent-cyan);
            top: 5%;
            left: 5%;
            animation-delay: 0s;
        }

        .orb-2 {
            width: 280px;
            height: 280px;
            background: var(--accent-purple);
            bottom: 10%;
            right: 10%;
            animation-delay: -7s;
        }

        .orb-3 {
            width: 200px;
            height: 200px;
            background: var(--accent-blue);
            top: 50%;
            left: 40%;
            animation-delay: -14s;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) scale(1); }
            25% { transform: translate(30px, -30px) scale(1.05); }
            50% { transform: translate(-20px, 20px) scale(0.95); }
            75% { transform: translate(20px, 10px) scale(1.02); }
        }

        /* ========== 导航栏 ========== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 1rem 2rem;
            background: rgba(10, 10, 15, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
        }

        .nav-container {
            width: 100%;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-primary);
            justify-self: start;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'JetBrains Mono', monospace;
            font-weight: 700;
            font-size: 1.2rem;
            box-shadow: 0 0 20px var(--glow-cyan);
        }

        .logo-text {
            font-family: 'JetBrains Mono', monospace;
            font-size: 1.4rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-cyan), var(--text-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            justify-self: center;
        }

        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            cursor: pointer;
            position: relative;
        }

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

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 217, 255, 0.1);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 1px;
        }

        .nav-actions {
            justify-self: end;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-home {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .btn-home:hover {
            color: var(--text-primary);
            border-color: var(--accent-cyan);
            background: rgba(0, 217, 255, 0.05);
        }

        /* ========== 主内容区 ========== */
        .main-container {
            min-height: 100vh;
            display: flex;
            position: relative;
            z-index: 1;
            padding-top: 72px;
        }

        /* ========== 左侧品牌区 ========== */
        .brand-section {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 4rem;
            position: relative;
            overflow: hidden;
        }

        .brand-content {
            max-width: 550px;
            width: 100%;
            position: relative;
        }

        .tab-panel {
            display: none;
            animation: fadeIn 0.4s ease;
        }

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

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

        .brand-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            background: rgba(0, 217, 255, 0.1);
            border: 1px solid rgba(0, 217, 255, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            margin-bottom: 2rem;
        }

        .brand-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .brand-title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }

        .brand-title .gradient-text {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .brand-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 3rem;
        }

        /* 特性列表 */
        .features-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: rgba(26, 26, 36, 0.6);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .feature-item:hover {
            border-color: rgba(0, 217, 255, 0.3);
            transform: translateX(5px);
        }

        .feature-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .feature-icon.cyan {
            background: rgba(0, 217, 255, 0.15);
        }

        .feature-icon.purple {
            background: rgba(139, 92, 246, 0.15);
        }

        .feature-icon.green {
            background: rgba(16, 185, 129, 0.15);
        }

        .feature-icon.orange {
            background: rgba(245, 158, 11, 0.15);
        }

        .feature-text h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
        }

        .feature-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== 右侧登录区 ========== */
        .login-section {
            width: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            background: rgba(18, 18, 26, 0.5);
            border-left: 1px solid var(--border-color);
        }

        .login-container {
            width: 100%;
            max-width: 400px;
            padding: 3rem;
            background: var(--bg-card);
            border-radius: 24px;
            border: 1px solid var(--border-color);
            box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
            position: relative;
        }

        .login-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
            border-radius: 24px 24px 0 0;
        }

        .login-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .login-logo-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1.5rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'JetBrains Mono', monospace;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--bg-primary);
            box-shadow: 0 10px 30px var(--glow-cyan);
        }

        .login-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

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

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
        }

        .form-label-icon {
            font-size: 1rem;
        }

        .form-input {
            width: 100%;
            padding: 1rem 1.25rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            font-size: 1rem;
            color: var(--text-primary);
            font-family: inherit;
            transition: all 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 4px rgba(0, 217, 255, 0.1);
        }

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

        .login-btn {
            width: 100%;
            padding: 1rem;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: var(--bg-primary);
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px var(--glow-cyan);
            font-family: inherit;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .login-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0, 217, 255, 0.4);
        }

        .login-btn:active {
            transform: translateY(-1px);
        }

        .login-btn:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }

        .error-message {
            display: none;
            margin-top: 1.25rem;
            padding: 1rem;
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.3);
            border-radius: 10px;
            color: #ef4444;
            font-size: 0.9rem;
            text-align: center;
            animation: shake 0.5s ease-in-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .login-footer {
            margin-top: 2rem;
            text-align: center;
        }

        .login-divider {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .login-divider::before,
        .login-divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-color);
        }

        .quick-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
        }

        .quick-link {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .quick-link:hover {
            color: var(--accent-cyan);
        }

        /* ========== Google 登录按钮 ========== */
        .social-login {
            margin-top: 1.5rem;
        }

        .google-login-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.75rem;
            width: 100%;
            padding: 0.875rem 1rem;
            background: #fff;
            color: #333;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            margin-top: 1rem;
            cursor: pointer;
            font-family: inherit;
        }

        .google-login-btn:hover {
            background: #f8f9fa;
            border-color: rgba(0, 217, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .google-login-btn:active {
            transform: translateY(-1px);
        }

        .google-login-btn svg {
            flex-shrink: 0;
        }

        /* ========== 加载动画 ========== */
        .loading {
            position: relative;
            overflow: hidden;
        }

        .loading::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            animation: shimmer 1.5s infinite;
        }

        @keyframes shimmer {
            0% { left: -100%; }
            100% { left: 100%; }
        }

        /* ========== 响应式设计 ========== */
        @media (max-width: 1024px) {
            .brand-section {
                padding: 3rem 2rem;
            }

            .login-section {
                width: 450px;
            }
        }

        @media (max-width: 900px) {
            .main-container {
                flex-direction: column;
            }

            .brand-section {
                padding: 3rem 2rem;
                order: 2;
                align-items: center;
            }

            .brand-content {
                max-width: 100%;
                text-align: center;
            }

            .features-list {
                max-width: 500px;
            }

            .feature-item:hover {
                transform: none;
            }

            .login-section {
                width: 100%;
                border-left: none;
                border-bottom: 1px solid var(--border-color);
                padding: 3rem 2rem;
                order: 1;
            }

            .nav-links {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .navbar {
                padding: 0.75rem 1rem;
            }

            .brand-section {
                padding: 2rem 1.5rem;
            }

            .brand-title {
                font-size: 1.75rem;
            }

            .login-section {
                padding: 2rem 1rem;
            }

            .login-container {
                padding: 2rem 1.5rem;
            }

            .quick-links {
                flex-direction: column;
                gap: 1rem;
            }
        }

        /* ========== 粒子动画 ========== */
        .particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--accent-cyan);
            border-radius: 50%;
            opacity: 0.3;
            animation: particle-float 15s infinite;
        }

        .particle:nth-child(2) {
            left: 20%;
            animation-delay: -2s;
            background: var(--accent-purple);
        }

        .particle:nth-child(3) {
            left: 40%;
            animation-delay: -4s;
        }

        .particle:nth-child(4) {
            left: 60%;
            animation-delay: -6s;
            background: var(--accent-blue);
        }

        .particle:nth-child(5) {
            left: 80%;
            animation-delay: -8s;
            background: var(--accent-purple);
        }

        .particle:nth-child(6) {
            left: 10%;
            animation-delay: -10s;
        }

        .particle:nth-child(7) {
            left: 50%;
            animation-delay: -12s;
            background: var(--accent-blue);
        }

        .particle:nth-child(8) {
            left: 70%;
            animation-delay: -14s;
        }

        @keyframes particle-float {
            0% {
                transform: translateY(100vh) scale(0);
                opacity: 0;
            }
            10% {
                opacity: 0.4;
            }
            90% {
                opacity: 0.4;
            }
            100% {
                transform: translateY(-100px) scale(1);
                opacity: 0;
            }
        }