* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: sans-serif;
        }
        body {
            background-color: #e4defc;
            height: 100vh;
            overflow: hidden;
            position: relative;
        }
        .logo-top-left {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 10;
        }
        .logo-top-left svg {
            width: 36px;
            height: 36px;
            fill: #1F1F1F;
        }
        .container {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            padding: 20px;
            position: relative;
        }
        .card {
            background-color: #1e1e1e;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
            text-align: center;
            width: 100%;
            max-width: 400px;
            color: white;
            position: relative;
            transition: transform 0.5s ease, opacity 0.3s ease;
        }
        .card.hidden {
            opacity: 0;
            transform: translateX(-100%);
            pointer-events: none;
            position: absolute;
            top: 0;
            left: 0;
        }
        .card h1 {
            font-size: 28px;
            margin-bottom: 16px;
        }
        .card p {
            font-size: 15px;
            margin-bottom: 28px;
            color: #a0a0a0;
        }
        .info-text {
            font-size: 13px;
            color: #ccc;
            margin-bottom: 20px;
            text-align: left;
        }
        .card svg.icon-back {
            position: absolute;
            top: 20px;
            left: 20px;
            width: 24px;
            height: 24px;
            cursor: pointer;
            stroke: white;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            display: none;
            background: transparent;
            user-select: none;
            z-index: 20;
            transition: stroke 0.3s ease;
        }
        .card svg.icon-back:hover {
            stroke: #bca4ff;
        }
        .card.active svg.icon-back {
            display: block;
        }
        .btn-primary,
        .btn-secondary {
            padding: 12px;
            width: 100%;
            border-radius: 10px;
            font-weight: bold;
            cursor: pointer;
            margin-bottom: 12px;
            transition: 0.3s;
            border: none;
            font-size: 16px;
        }
        .btn-primary {
            background-color: #bca4ff;
            color: black;
        }
        .btn-primary:hover {
            background-color: #a98fff;
        }
        .btn-secondary {
            background-color: #2e2e2e;
            color: white;
        }
        .btn-secondary:hover {
            background-color: #444;
        }
        .form-group {
            margin-bottom: 14px;
            text-align: left;
            position: relative;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px;
            border-radius: 8px;
            border: none;
            font-size: 14px;
        }
        .form-group label {
            font-size: 14px;
            margin-bottom: 4px;
            display: block;
            color: #ccc;
        }
        .form-row {
            display: flex;
            gap: 10px;
        }
        .form-row .form-group {
            flex: 1;
        }
        .checkbox-group {
            display: flex;
            align-items: center;
            margin-bottom: 10px;
            font-size: 13px;
            color: #ccc;
            position: relative;
        }
        .checkbox-group input {
            margin-right: 8px;
            width: 16px;
            height: 16px;
            flex-shrink: 0;
        }
        .checkbox-group label {
            flex-grow: 1;
            margin-bottom: 0;
        }
        .popup {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 100;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .popup.active {
            opacity: 1;
            pointer-events: auto;
        }
        .popup-card {
            background-color: #1e1e1e;
            padding: 30px;
            border-radius: 16px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
            text-align: center;
            width: 100%;
            max-width: 350px;
            color: white;
            position: relative;
        }
        .code-inputs {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin: 20px 0;
        }
        .code-input {
            width: 50px;
            height: 50px;
            text-align: center;
            font-size: 24px;
            border: none;
            border-radius: 8px;
            background-color: #2e2e2e;
            color: white;
        }
        .code-input:focus {
            outline: none;
            box-shadow: 0 0 0 2px #bca4ff;
        }
        .timer {
            font-size: 13px;
            color: #ccc;
            margin-top: 10px;
            text-align: center;
        }
        .loading-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .loading-screen.active {
            opacity: 1;
            pointer-events: auto;
        }
        .loading-screen svg {
            width: 60px;
            height: 60px;
            fill: white;
            animation: fade 1.5s infinite;
        }
        @keyframes fade {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .container.blur {
            filter: blur(8px);
        }
        .form-group.error input {
            border: 2px solid #ff5555;
        }
        .form-group.error.checkbox-group::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 16px;
            height: 16px;
            border: 2px solid #ff5555;
            border-radius: 4px;
        }
        .error-message {
            color: #ff5555;
            font-size: 12px;
            margin-top: 4px;
            display: none;
        }
        .form-group.error .error-message {
            display: block;
        }
        .general-error {
            color: #ff5555;
            font-size: 14px;
            margin-bottom: 10px;
            text-align: center;
        }
        @media (max-width: 500px) {
            .card,
            .popup-card {
                padding: 20px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
            }
            .card h1,
            .popup-card h1 {
                font-size: 22px;
            }
            .code-input {
                width: 40px;
                height: 40px;
                font-size: 20px;
            }
        }