:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #475569;
    --error-color: #ef4444;
    --border-color: #e2e8f0;
    --card-shadow: 0 18px 40px -22px rgba(15, 23, 42, 0.35);
    --transition: all 0.3s ease;
    --radius: 14px;
}
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
            background: radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.12), transparent 30%),
                        radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.16), transparent 28%),
                        linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            color: var(--text-color);
        }
        
        .auth-container {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--card-shadow);
            width: 100%;
            max-width: 420px;
            overflow: hidden;
            transition: var(--transition);
            animation: fadeIn 0.6s ease forwards;
            border: 1px solid rgba(226, 232, 240, 0.7);
        }
        
        .auth-header {
            background: var(--surface);
            padding: 2.25rem 2rem 1.5rem;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }
        
        .auth-header h2 {
            color: var(--text-color);
            font-size: 1.9rem;
            font-weight: 600;
            letter-spacing: -0.02em;
            margin: 0;
        }
        
        .auth-header p {
            color: var(--text-muted);
            margin-top: 0.45rem;
            font-size: 0.95rem;
        }
        
        .auth-header img {
            height: 42px;
            margin-bottom: 1rem;
        }
        
        .auth-body {
            padding: 2.25rem;
            background: var(--surface-muted);
        }
        
        .divider {
            display: flex;
            align-items: center;
            text-align: center;
            margin: 1.5rem 0;
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        
        .divider::before,
        .divider::after {
            content: '';
            flex: 1;
            border-bottom: 1px solid var(--border-color);
        }
        
        .divider::before {
            margin-right: 0.5rem;
        }
        
        .divider::after {
            margin-left: 0.5rem;
        }
        
        .google-button {
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem 1.1rem;
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-weight: 600;
            width: 100%;
            max-width: 300px;
            margin: 1.6rem auto 1.25rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            font-size: 1rem;
            letter-spacing: -0.01em;
            box-shadow: 0 12px 30px -20px rgba(37, 99, 235, 0.45);
        }
        
        .google-button:hover {
            box-shadow: 0 14px 30px -18px rgba(37, 99, 235, 0.35);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.35);
        }
        
        .google-auth-container {
            text-align: center;
            padding: 1rem 0;
        }
        
        .auth-info {
            color: var(--text-muted);
            margin-bottom: 1.1rem;
            font-size: 0.98rem;
            line-height: 1.55;
        }
        
        .privacy-note {
            color: var(--text-muted);
            font-size: 0.86rem;
            margin-top: 1.4rem;
        }
        
        .google-button img {
            margin-right: 0.8rem;
            width: 1.2rem;
            height: 1.2rem;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background-color: #ffffff;
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-size: 0.95rem;
            transition: var(--transition);
            color: var(--text-color);
        }
        
        .form-control:focus {
            outline: none;
            border-color: rgba(37, 99, 235, 0.55);
            box-shadow: 0 10px 30px -24px rgba(37, 99, 235, 0.6), 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        
        .btn {
            display: block;
            width: 100%;
            padding: 0.9rem 1rem;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #ffffff;
            border: none;
            border-radius: 12px;
            font-family: 'Space Grotesk', 'Inter', sans-serif;
            font-weight: 600;
            font-size: 0.97rem;
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: -0.01em;
            box-shadow: 0 14px 34px -18px rgba(37, 99, 235, 0.55);
        }
        
        .btn:hover {
            background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 100%);
            transform: translateY(-1px);
        }
        
        .error-message {
            color: var(--error-color);
            margin-bottom: 1rem;
            text-align: center;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 0.6rem 0.75rem;
            background-color: rgba(239, 68, 68, 0.08);
            border-radius: 10px;
            display: none;
        }
        
        .auth-footer {
            text-align: center;
            padding: 0 2rem 2rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            background: var(--surface);
        }
        
        .auth-footer a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }
        
        .auth-footer a:hover {
            text-decoration: underline;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @media (max-width: 480px) {
            .auth-container {
                max-width: 100%;
            }
            .auth-header {
                padding: 1.6rem 1.1rem 1.2rem;
            }
            .auth-header h2 {
                font-size: 1.6rem;
            }
            .auth-body {
                padding: 1.6rem;
            }
            .auth-footer {
                padding: 0 1.5rem 1.5rem;
            }
        }