* {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background: #f4f6fb;
            color: #243047;
        }

        .login-box {
            width: 100%;
            max-width: 420px;
            margin: 20px;
            padding: 42px;
            background: #ffffff;
            border-radius: 14px;
            box-shadow: 0 12px 40px rgba(30, 40, 60, 0.09);
        }

        .logo {
            width: 48px;
            height: 48px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: #315efb;
            color: white;
            font-size: 23px;
            font-weight: 700;
        }

        h1 {
            margin: 0 0 8px;
            font-size: 25px;
        }

        .description {
            margin: 0 0 28px;
            color: #758196;
            font-size: 14px;
        }

        label {
            display: block;
            margin-bottom: 7px;
            font-size: 13px;
            font-weight: 600;
        }

        input {
            width: 100%;
            height: 45px;
            margin-bottom: 20px;
            padding: 0 13px;
            border: 1px solid #dce2eb;
            border-radius: 8px;
            font-size: 14px;
            outline: none;
        }

        input:focus {
            border-color: #315efb;
        }

        button {
            width: 100%;
            height: 46px;
            border: 0;
            border-radius: 8px;
            background: #315efb;
            color: #ffffff;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
        }

        button:hover {
            background: #244de5;
        }

        .message {
            min-height: 20px;
            margin-top: 16px;
            color: #c63c3c;
            font-size: 13px;
            text-align: center;
        }

        .footer {
            margin-top: 22px;
            color: #97a1b1;
            font-size: 12px;
            text-align: center;
        }