* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-image: url('../../img/4.png');
            background-color: #20b2aa;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow-x: hidden;
            overflow-y: auto;
        }

        .back-button {
            position: absolute;
            top: 30px;
            left: 30px;
            width: 50px;
            height: 50px;
            background-color: transparent;
            border: 2px solid #000;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            color: #000;
            font-size: 20px;
            z-index: 100;
        }

        .back-button:hover {
            background-color: rgba(0, 0, 0, 0.1);
        }

        /* ── Tutorial Button ── */
        .tutorial-button {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #20b2aa 0%, #17a2b8 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            color: white;
            font-size: 22px;
            font-weight: 700;
            z-index: 999;
            box-shadow: 0 4px 18px rgba(32, 178, 170, 0.5);
            transition: all 0.3s ease;
            animation: pulseRing 2.5s ease-in-out infinite;
        }

        .tutorial-button:hover {
            transform: scale(1.12);
            box-shadow: 0 6px 24px rgba(32, 178, 170, 0.7);
        }

        .tutorial-tooltip {
            position: absolute;
            right: 66px;
            background: #1a1a2e;
            color: white;
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
            font-family: 'Segoe UI', sans-serif;
        }

        .tutorial-tooltip::after {
            content: '';
            position: absolute;
            right: -6px;
            top: 50%;
            transform: translateY(-50%);
            border: 6px solid transparent;
            border-left-color: #1a1a2e;
            border-right: none;
        }

        .tutorial-button:hover .tutorial-tooltip {
            opacity: 1;
        }

        @keyframes pulseRing {
            0%   { box-shadow: 0 0 0 0 rgba(32,178,170,0.5); }
            70%  { box-shadow: 0 0 0 12px rgba(32,178,170,0); }
            100% { box-shadow: 0 0 0 0 rgba(32,178,170,0); }
        }

        @media (max-width: 480px) {
            .tutorial-button {
                bottom: 20px;
                right: 20px;
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
        }

        .container {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 40px 60px 60px 60px;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
            gap: 60px;
        }

        .left-section {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }

        .logo-container img {
            max-width: 550px;
            width: 100%;
            height: auto;
        }

        .tagline-bottom {
            text-align: center;
            font-size: 24px;
            font-style: italic;
            color: #333;
            font-weight: 600;
        }

        .right-section {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .form-card {
            background: white;
            padding: 30px;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            max-width: 500px;
            width: 100%;
        }

        .form-card h2 {
            font-size: 32px;
            font-weight: 700;
            color: #20b2aa;
            margin-bottom: 8px;
            text-align: center;
        }

        .form-card p {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            text-align: center;
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #333;
            margin-bottom: 8px;
        }

        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 15px;
            background-color: white;
            transition: all 0.3s ease;
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }

        .form-group select:focus {
            outline: none;
            border-color: #20b2aa;
            box-shadow: 0 0 0 3px rgba(32, 178, 170, 0.1);
        }

        .form-group select:disabled {
            background-color: #f5f5f5;
            cursor: not-allowed;
            opacity: 0.6;
        }

        .continue-btn {
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, #20b2aa 0%, #17a2b8 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
        }

        .continue-btn:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(32, 178, 170, 0.3);
        }

        .continue-btn:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
        }

        .trust-badges {
            text-align: center;
            margin-top: 25px;
            color: #666;
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .security-badge {
            width: 14px;
            height: 14px;
        }

        .message-alert {
            padding: 15px 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 500;
            animation: slideIn 0.3s ease;
        }

        .message-alert.success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .message-alert.error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .message-alert i {
            font-size: 20px;
        }

        @keyframes slideIn {
            from { opacity: 0; transform: translateY(-10px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        .loading {
            text-align: center;
            padding: 30px;
            color: #20b2aa;
            font-size: 16px;
        }

        .loading i {
            font-size: 30px;
            margin-bottom: 10px;
        }

        /* ── Large tablets / small desktops (≤ 1100px) ── */
        @media (max-width: 1100px) {
            .container {
                gap: 40px;
                padding: 40px 40px 60px 40px;
            }
            .logo-container img { max-width: 420px; }
            .tagline-bottom { font-size: 20px; }
        }

        /* ── Tablets (≤ 900px) ── */
        @media (max-width: 900px) {
            .container {
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding: 80px 30px 60px 30px;
                gap: 30px;
            }
            .left-section { width: 100%; max-width: 500px; }
            .logo-container img { max-width: 360px; }
            .tagline-bottom { font-size: 18px; }
            .right-section { width: 100%; max-width: 500px; }
            .form-card { padding: 28px 24px; }
        }

        /* ── Mobile landscape / large phones (≤ 680px) ── */
        @media (max-width: 680px) {
            .back-button { top: 16px; left: 16px; width: 40px; height: 40px; font-size: 16px; }
            .container { padding: 70px 16px 50px 16px; gap: 24px; }
            .logo-container img { max-width: 260px; }
            .tagline-bottom { font-size: 15px; }
            .form-card { border-radius: 16px; padding: 24px 16px; }
            .form-card h2 { font-size: 24px; }
            .form-card p { font-size: 13px; margin-bottom: 16px; }
            .form-group { margin-bottom: 12px; }
            .form-group label { font-size: 13px; }
            .form-group select { font-size: 14px; padding: 10px 14px; }
            .continue-btn { padding: 14px; font-size: 15px; }
            .trust-badges { font-size: 12px; margin-top: 16px; }
        }

        /* ── Small phones (≤ 420px) ── */
        @media (max-width: 420px) {
            .back-button { top: 12px; left: 12px; width: 36px; height: 36px; font-size: 14px; }
            .container { padding: 62px 12px 40px 12px; gap: 18px; }
            .logo-container img { max-width: 200px; }
            .tagline-bottom { font-size: 13px; }
            .form-card { border-radius: 14px; padding: 20px 14px; }
            .form-card h2 { font-size: 22px; }
            .form-group select { font-size: 13px; padding: 9px 12px; }
            .continue-btn { padding: 13px; font-size: 14px; }
        }

        .terms-group {
            margin: 14px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .terms-group input[type="checkbox"] {
            margin-top: 3px;
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            accent-color: #20b2aa;
            cursor: pointer;
        }

        .terms-group label {
            font-size: 13px;
            color: #444;
            line-height: 1.5;
            cursor: pointer;
            font-weight: normal;
            margin-bottom: 0;
        }