:root {
            --main-bg: #0a0a0a;
            --accent: #FF6B00;
            --card-bg: #1a1a1a;
            --text-main: #FFFFFF;
            --text-secondary: #AAAAAA;
            --gradient: linear-gradient(135deg, #FF6B00 0%, #FF8C3A 100%);
        }

        body {
            background: var(--main-bg);
            color: var(--text-main);
            font-family: 'Roboto', sans-serif;
            line-height: 1.6;
            margin: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .registration-wrapper {
            flex: 1;
            display: flex;
            align-items: center;
            padding: 40px 20px;
        }

        .registration-card {
            background: var(--card-bg);
            max-width: 580px;
            width: 100%;
            margin: 0 auto;
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.3);
            position: relative;
            overflow: hidden;
        }

        .registration-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gradient);
        }

        .registration-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .registration-header h1 {
            font-size: 32px;
            margin: 0 0 10px;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .registration-header p {
            color: var(--text-secondary);
            margin: 0;
            font-size: 16px;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding-left: 28px;
        }

        .form-label::before {
            content: '*';
            color: var(--accent);
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 18px;
        }

        .input-field {
            width: 100%;
            padding: 14px 20px;
            background: #262626;
            border: 2px solid #333;
            border-radius: 8px;
            color: var(--text-main);
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .input-field:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(255,107,0,0.2);
        }

        .input-field::placeholder {
            color: #666;
        }

        .form-hint {
            color: var(--text-secondary);
            font-size: 13px;
            margin-top: 6px;
            padding-left: 28px;
        }

        .checkbox-group {
            margin: 30px 0;
            padding: 20px;
            background: #262626;
            border-radius: 8px;
        }

        .custom-checkbox {
            display: flex;
            align-items: center;
            cursor: pointer;
        }

        .custom-checkbox input {
            position: absolute;
            opacity: 0;
        }

        .checkmark {
            width: 20px;
            height: 20px;
            border: 2px solid #444;
            border-radius: 4px;
            margin-right: 12px;
            position: relative;
            transition: all 0.3s ease;
        }

        .custom-checkbox:hover .checkmark {
            border-color: var(--accent);
        }

        .custom-checkbox input:checked ~ .checkmark {
            background: var(--accent);
            border-color: var(--accent);
        }

        .checkmark::after {
            content: '';
            position: absolute;
            display: none;
            left: 6px;
            top: 2px;
            width: 5px;
            height: 10px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

        .custom-checkbox input:checked ~ .checkmark::after {
            display: block;
        }

        .checkbox-text {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .checkbox-text a {
            color: var(--accent);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .checkbox-text a:hover {
            text-decoration: underline;
            opacity: 0.9;
        }

        .submit-btn {
            width: 100%;
            padding: 16px;
            background: var(--gradient);
            border: none;
            border-radius: 8px;
            color: white;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .submit-btn:hover {
            opacity: 0.95;
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(255,107,0,0.3);
        }

        @media (max-width: 768px) {
            .registration-card {
                padding: 30px 20px;
                border-radius: 12px;
            }

            .registration-header h1 {
                font-size: 28px;
            }

            .input-field {
                padding: 12px 16px;
            }
        }