:root {
            --main-bg: #f8f9fa;
            --main-text: #333;
            --content-bg: #ffffff;
            --content-border: #0088cc;
            --content-shadow: rgba(0, 170, 255, 0.15);
            --title-color: #0088cc;
            --description-color: #666;
            --icon-bg: #D7E4FE;
            --footer-bg: #F4F6FA;
            --footer-text: #666;
            --loader_main-bg: rgba(255, 255, 255, 1);
            --loader--bg: rgba(255, 255, 255, 1);
            --loader-spinner-border: rgba(255, 255, 255, 1);
            --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.267);
            --checkbox-border: #ddd;
            --checkbox-checked: #0088cc;
            --link-color: #0088cc;
            --button-disabled: #ccc;
        }

        .dark {
            --main-bg: #1a1a1a;
            --main-text: #e0e0e0;
            --content-bg: #2a2a2a;
            --content-border: #444444;
            --content-shadow: rgba(0, 0, 0, 0.3);
            --title-color: #ffffff;
            --description-color: #bbbbbb;
            --footer-bg: #333333;
            --footer-text: #aaaaaa;
            --loader_main-bg: rgb(0, 0, 0);
            --loader--bg: rgb(0, 0, 0);
            --loader-spinner-border: rgb(0, 0, 0);
            --card-shadow: 0 4px 12px rgba(0,0,0,0.5);
            --checkbox-border: #666;
            --checkbox-checked: #4a90d9;
            --link-color: #4a90d9;
            --button-disabled: #555;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--main-bg);
            color: var(--main-text);
            line-height: 1.6;
            transition: background-color 0.3s, color 0.3s;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        main {
            padding: 40px 20px;
            min-height: calc(100vh - 80px);
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .auth_container {
            max-width: 800px;
            width: 100%;
            display: flex;
            justify-content: center;
        }

        .auth_section {
            background: var(--content-bg);
            width: 60%;
            border-radius: 12px;
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
        }

        .auth_icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 30px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--icon-bg);
            box-shadow: 0 3px 10px rgba(0, 170, 255, 0.2);
        }

        .auth_icon .icon {
            width: 50px;
            height: 50px;
        }

        .auth_title {
            font-size: 24px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 15px;
            transition: color 0.3s;
        }

        .auth_description {
            font-size: 16px;
            color: var(--description-color);
            margin-bottom: 30px;
            line-height: 1.5;
            transition: color 0.3s;
        }

        .agreement_section {
            background-color: var(--footer-bg);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 25px;
            text-align: left;
            transition: background-color 0.3s;
        }

        .checkbox_group {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .checkbox_group:last-child {
            margin-bottom: 0;
        }

        .checkbox_wrapper {
            position: relative;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .checkbox_input {
            width: 18px;
            height: 18px;
            border: 2px solid var(--checkbox-border);
            border-radius: 4px;
            background: transparent;
            cursor: pointer;
            appearance: none;
            position: relative;
            transition: all 0.3s ease;
        }

        .checkbox_input:checked {
            background: var(--checkbox-checked);
            border-color: var(--checkbox-checked);
        }

        .checkbox_input:checked::after {
            content: '✓';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 12px;
            font-weight: bold;
        }

        .checkbox_label {
            font-size: 14px;
            color: var(--footer-text);
            line-height: 1.4;
            cursor: pointer;
            transition: color 0.3s;
        }

        .checkbox_label a {
            color: var(--link-color);
            text-decoration: none;
            transition: color 0.3s;
        }

        .checkbox_label a:hover {
            text-decoration: underline;
        }

        .auth_actions {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            animation: fadeInUp 0.5s ease;
        }

        .telegram-login-button {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 14px 28px;
            background: linear-gradient(135deg, #54a3db 0%, #4a90d9 100%);
            color: white;
            text-decoration: none;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            font-weight: 500;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(84, 163, 219, 0.3);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            border: none;
        }

        .telegram-login-button:disabled {
            background: var(--button-disabled);
            color: #999;
            cursor: not-allowed;
            box-shadow: none;
            opacity: 0.6;
        }

        .telegram-login-button:not(:disabled)::before {
            content: "";
            width: 24px;
            height: 24px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 0C5.373 0 0 5.373 0 12s5.373 12 12 12 12-5.373 12-12S18.627 0 12 0zm5.894 8.221l-1.97 9.28c-.145.658-.537.818-1.084.508l-3-2.21-1.446 1.394c-.14.18-.357.295-.6.295l.213-3.054 5.56-5.022c.24-.213-.054-.334-.373-.121l-6.869 4.326-2.96-.924c-.64-.203-.658-.64.135-.954l11.566-4.458c.538-.196 1.006.128.828.941z'/%3E%3C/svg%3E");
            background-size: contain;
            background-repeat: no-repeat;
            background-position: center;
        }

        .telegram-login-button:not(:disabled):hover {
            background: linear-gradient(135deg, #4a90d9 0%, #3d7bc8 100%);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(84, 163, 219, 0.4);
        }

        .telegram-login-button:not(:disabled):active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(84, 163, 219, 0.3);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Mobile styles */
        @media screen and (max-width: 768px) {
            main {
                padding: 15px;
                min-height: calc(100vh - 60px);
            }
            
            .auth_container {
                margin-top: 0;
            }
            
            .auth_section {
                width: 90%;
                padding: 35px 25px;
                border-radius: 8px;
            }
            
            .auth_icon {
                width: 70px;
                height: 70px;
                margin-bottom: 25px;
            }
            
            .auth_icon .icon {
                width: 45px;
                height: 45px;
            }
            
            .auth_title {
                font-size: 22px;
                margin-bottom: 12px;
            }
            
            .auth_description {
                font-size: 15px;
                margin-bottom: 25px;
            }
            
            .agreement_section {
                padding: 15px;
                margin-bottom: 20px;
            }
            
            .checkbox_label {
                font-size: 13px;
            }
            
            .auth_actions {
                margin-bottom: 25px;
            }
        }

        @media screen and (max-width: 480px) {
            main {
                min-height: calc(100vh - 50px);
                align-items: center;
            }
            
            .auth_section {
                padding: 30px 20px;
                border-radius: 6px;
                margin: 10px 0;
            }
            
            .auth_icon {
                width: 60px;
                height: 60px;
                margin-bottom: 20px;
            }
            
            .auth_icon .icon {
                width: 40px;
                height: 40px;
            }
            
            .auth_title {
                font-size: 20px;
                margin-bottom: 10px;
            }
            
            .auth_description {
                font-size: 14px;
                margin-bottom: 20px;
                padding: 0 5px;
            }
            
            .agreement_section {
                padding: 12px;
                margin-bottom: 18px;
            }
            
            .checkbox_label {
                font-size: 12px;
            }
            
            .telegram-login-button {
                padding: 12px 24px;
                font-size: 14px;
            }
            
            .telegram-login-button:not(:disabled)::before {
                width: 20px;
                height: 20px;
            }
        }

        /* Landscape orientation for mobile */
        @media screen and (max-height: 600px) and (orientation: landscape) {
            main {
                padding: 10px;
                align-items: flex-start;
                justify-content: center;
            }
            
            .auth_container {
                margin-top: 2%;
            }
            
            .auth_section {
                padding: 20px 25px;
                max-width: 400px;
            }
            
            .auth_icon {
                width: 50px;
                height: 50px;
                margin-bottom: 15px;
            }
            
            .auth_icon .icon {
                width: 30px;
                height: 30px;
            }
            
            .auth_title {
                font-size: 18px;
                margin-bottom: 8px;
            }
            
            .auth_description {
                font-size: 14px;
                margin-bottom: 15px;
            }
            
            .agreement_section {
                padding: 10px;
                margin-bottom: 12px;
            }
            
            .checkbox_label {
                font-size: 11px;
            }
            
            .auth_actions {
                margin-bottom: 15px;
            }
        }