:root {
            --primary: #2563eb;
            --secondary: #7c3aed;
            --accent: #10b981;
            --text-gradient: linear-gradient(to right, #2563eb, #7c3aed, #db2777);
            --bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
            --glass-bg: rgba(255, 255, 255, 0.95);
            --glass-border: rgba(255, 255, 255, 0.8);
            --card-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
        }

        [data-theme="dark"] {
            --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            --glass-bg: rgba(30, 41, 59, 0.98);
            --glass-border: rgba(255, 255, 255, 0.05);
            --text-main: #f8fafc;
            --text-dim: #94a3b8;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }

        body {
            font-family: 'Inter', sans-serif;
            background: var(--bg-gradient);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 15px;
            color: #1e293b;
            overflow: hidden;
        }

        body[data-theme="dark"] { color: var(--text-main); }

        .login-card {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: 28px;
            box-shadow: var(--card-shadow);
            width: 100%;
            max-width: 440px;
            padding: 40px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
            animation: cardEntrance 0.8s cubic-bezier(0.16, 1, 0.3, 1);
        }

        @keyframes cardEntrance {
            from { opacity: 0; transform: scale(0.9) translateY(20px); }
            to { opacity: 1; transform: scale(1) translateY(0); }
        }

        /* Background Icons */
        .card-bg-icon {
            position: absolute;
            font-size: 6rem;
            opacity: 0.03;
            z-index: 0;
            pointer-events: none;
        }
        .icon-1 { top: -20px; left: -20px; transform: rotate(-20deg); }
        .icon-2 { bottom: -20px; right: -20px; transform: rotate(20deg); }

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

        .logo-box { 
            margin-bottom: 30px;
            animation: logoFloat 4s ease-in-out infinite;
        }
        
        @keyframes logoFloat {
            0%, 100% { transform: translateY(0) rotate(0); }
            50% { transform: translateY(-8px) rotate(1deg); }
        }

        .logo-box img { 
            height: 90px;
            width: auto;
            filter: drop-shadow(0 4px 10px rgba(0,0,0,0.05));
        }

        h1 {
            font-size: 1.85rem;
            font-weight: 800;
            background: var(--text-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 15px;
            line-height: 1.1;
            letter-spacing: -1px;
        }

        .desc {
            font-size: 0.95rem;
            color: #475569;
            margin-bottom: 25px;
            line-height: 1.6;
            font-weight: 500;
        }
        .desc strong { color: var(--secondary); font-weight: 700; }

        .feature-box {
            background: rgba(37, 99, 235, 0.06);
            border: 1px solid rgba(37, 99, 235, 0.1);
            border-radius: 20px;
            padding: 20px;
            margin-bottom: 30px;
            text-align: left;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.875rem;
            font-weight: 600;
            color: #334155;
            margin-bottom: 10px;
        }
        .feature-item:last-child { margin-bottom: 0; }
        .feature-item i { color: #10b981; font-size: 1.1rem; }

        body[data-theme="dark"] .feature-item { color: #cbd5e1; }
        body[data-theme="dark"] .feature-box { background: rgba(255, 255, 255, 0.03); }

        .google-btn {
            background: #ffffff;
            color: #1e293b;
            border: 1px solid #e2e8f0;
            padding: 14px 24px;
            border-radius: 16px;
            font-size: 1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            width: 100%;
            text-decoration: none;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            position: relative;
            overflow: hidden;
        }

        /* Glowing Flush Effect */
        .google-btn::after {
            content: "";
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(
                120deg,
                transparent,
                rgba(37, 99, 235, 0.1),
                rgba(124, 58, 237, 0.2),
                transparent
            );
            transition: none;
            animation: flushEffect 3s infinite linear;
        }

        @keyframes flushEffect {
            0% { left: 100%; }
            20% { left: -100%; }
            100% { left: -100%; }
        }

        .google-btn:hover {
            background: #f8fafc;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.1);
        }

        .google-btn img, .google-btn span {
            position: relative;
            z-index: 2;
        }

        .footer-note {
            margin-top: 25px;
            font-size: 0.75rem;
            color: #94a3b8;
        }
        .footer-note a { color: var(--primary); text-decoration: none; font-weight: 600; }

        @media (max-width: 480px) {
            body { padding: 0; overflow: auto; }
            .login-card { 
                max-width: 100%; 
                height: 100vh; 
                border-radius: 0; 
                display: flex; 
                flex-direction: column; 
                justify-content: center;
                padding: 30px 20px;
                border: none;
            }
        }

        .bg-blob {
            position: fixed;
            z-index: -1;
            filter: blur(100px);
            opacity: 0.6;
            border-radius: 50%;
        }
        .blob-1 { width: 400px; height: 400px; background: #dbeafe; top: -100px; left: -100px; animation: float 10s infinite; }
        .blob-2 { width: 350px; height: 350px; background: #ede9fe; bottom: -50px; right: -50px; animation: float 12s infinite reverse; }
        @keyframes float { 0%, 100% { transform: translate(0,0); } 50% { transform: translate(20px, 30px); } }