:root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --error-bg: #fef2f2;
            --error-text: #dc2626;
            --success-bg: #f0fdf4;
            --success-text: #166534;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            background-image: radial-gradient(circle at top right, #e2e8f0, transparent),
                              radial-gradient(circle at bottom left, #e2e8f0, transparent);
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
        }

        .card {
            background: var(--card-bg);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 450px;
            border: 1px solid #e2e8f0;
        }

        h2 {
            margin: 0 0 8px 0;
            font-size: 24px;
            color: var(--text-main);
            text-align: center;
        }

        .subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 30px;
        }

        .alert {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 24px;
            font-size: 14px;
            line-height: 1.5;
            border: 1px solid transparent;
        }

        .alert-error { background-color: var(--error-bg); color: var(--error-text); border-color: #fecaca; }
        .alert-success { background-color: var(--success-bg); color: var(--success-text); border-color: #bbf7d0; }

        label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        input {
            width: 100%;
            padding: 12px;
            margin-bottom: 18px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            box-sizing: border-box;
            font-size: 15px;
            transition: all 0.2s ease;
        }

        input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        button {
            width: 100%;
            padding: 12px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s ease;
            margin-top: 10px;
        }

        button:hover { background-color: var(--primary-hover); }

        .footer-links {
            text-align: center;
            margin-top: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-links a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }