:root {
            color-scheme: light dark;
            /* Dark Theme (Default) */
            --bg-page: #151719;
            --bg-primary: #1d1e20;
            --bg-secondary: #0c0d0e;
            --bg-hover: #252628;
            --text-primary: #fff;
            --text-secondary: #dee0e3;
            --text-tertiary: #a0a4ac;
            --text-disabled: #696c72;
            --border-primary: #252628;
            --border-secondary: #4b4d50;
            --accent-primary: #60e297;
            --accent-primary-hover: #a7f6c9;
            --accent-primary-text: #0c0d0e;
            --danger: #e53e3e;
            --shadow-primary: rgba(0,0,0,0.5);
            --select-arrow-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23a0a4ac' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
        }

        @media (prefers-color-scheme: light) {
            :root {
                /* Light Theme */
                --bg-page: #f3f5f8;
                --bg-primary: #ffffff;
                --bg-secondary: #edeff2;
                --bg-hover: #e9e9e9;
                --text-primary: #151719;
                --text-secondary: #4b4d50;
                --text-tertiary: #696c72;
                --text-disabled: #a0a4ac;
                --border-primary: #e0e0e0;
                --border-secondary: #c0c0c0;
                --accent-primary: #00b14f;
                --accent-primary-hover: #00d35e;
                --accent-primary-text: #ffffff;
                --danger: #d32f2f;
                --shadow-primary: rgba(0,0,0,0.1);
                --select-arrow-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23696c72' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
            }
        }

        @font-face {
            font-family: TT Satoshi;
            font-weight: 500;
            src: url(https://suite.trezor.io/web/static/fonts/TTSatoshi/TTSatoshi-Medium.otf) format("opentype");
        }
        @font-face {
            font-family: TT Satoshi;
            font-weight: 600;
            src: url(https://suite.trezor.io/web/static/fonts/TTSatoshi/TTSatoshi-DemiBold.otf) format("opentype");
        }
        * {
            margin: 0;
            padding: 0;
            outline: none;
            box-sizing: border-box;
            font-family: "TT Satoshi", -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
        }
        body, html {
            background: var(--bg-page);
            color: var(--text-primary);
            height: 100%;
            overflow-y: auto;
        }
        .flex { display: flex; }
        .flex-col { flex-direction: column; }
        .items-center { align-items: center; }
        .justify-center { justify-content: center; }
        .w-full { width: 100%; }
        .btn { display: flex; align-items: center; justify-content: center; border-radius: 100px; transition: box-shadow 0.1s ease-out, border-color 0.1s ease-out, background 0.1s ease-out; outline: none; cursor: pointer; border: 1px solid transparent; width: fit-content; }
        .btn-primary { padding: 2px 8px; gap: 8px; background: var(--accent-primary); color: var(--accent-primary-text); }
        .btn-primary:hover { background: var(--accent-primary-hover); }
        .btn-primary:disabled { background: var(--bg-hover); color: var(--text-disabled); cursor: not-allowed; }
        .btn-secondary { padding: 2px 8px; gap: 8px; background: transparent; border: 1px solid var(--border-secondary); color: var(--text-secondary); }
        .btn-secondary:hover { background: var(--bg-hover); }
        .btn-text { white-space: normal; overflow: hidden; text-overflow: ellipsis; font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: -0.3px; }

        /* Styles for this recovery page specifically */
        .recovery-container { display: flex; justify-content: center; align-items: center; width: 100%; min-height: 100%; padding: 20px; }
        .popup-content { background: var(--bg-primary); border: 1px solid var(--border-primary); padding: 32px; border-radius: 20px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 16px; width: 480px; max-width: 90%; box-shadow: 0 10px 30px var(--shadow-primary); position: relative; }
        .popup-title { font-size: 22px; line-height: 30px; font-weight: 600; color: var(--text-primary); margin-top: 8px; text-align: center; width: 100%; }
        .popup-button { width: 100%; padding: 12px 24px !important; margin-top: 8px; }
        .popup-button .btn-text { font-size: 16px; font-weight: 600; }

        /* Menu visibility */
        #device-selection-menu, #backup-type-menu, #shamir-config-menu, #seed-entry-menu { display: none; width: 100%; }
        .hidden { display: none !important; }

        /* Back Arrow Button */
        .back-arrow-btn { position: absolute; top: 43px; left: 32px; background: none; border: none; padding: 0; cursor: pointer; height: 24px; width: 24px; }
        .back-arrow-btn svg { width: 24px; height: 24px; stroke: var(--text-tertiary); transition: stroke 0.1s ease-in-out; }
        .back-arrow-btn:hover svg { stroke: var(--text-primary); }

        /* Menu 1 & 2 Styles */
        .device-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; width: 100%; margin: 8px 0 16px 0; }
        .device-option { position: relative; background: var(--bg-secondary); border: 2px solid var(--border-primary); border-radius: 12px; padding: 16px; cursor: pointer; transition: border-color 0.1s ease-in-out; display: flex; flex-direction: column; align-items: center; gap: 12px; }
        .device-option:hover, .backup-option:hover { border-color: var(--border-secondary); }
        .device-option.selected, .backup-option.selected { border-color: var(--accent-primary); }
        .device-option img { width: 80px; height: 80px; object-fit: contain; }
        .device-option span { font-weight: 500; color: var(--text-secondary); }
        .checkmark-icon { position: absolute; top: 8px; right: 8px; width: 24px; height: 24px; background-color: var(--accent-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.1s; }
        .device-option.selected .checkmark-icon { opacity: 1; }
        .checkmark-icon svg { width: 16px; height: 16px; stroke: var(--accent-primary-text); stroke-width: 2.5; }
        .backup-option { background: var(--bg-secondary); border: 2px solid var(--border-primary); border-radius: 12px; padding: 16px; cursor: pointer; transition: border-color 0.1s ease-in-out; text-align: left; width: 100%; }
        .backup-option .backup-title { font-size: 16px; font-weight: 600; color: var(--text-secondary); }
        .backup-option .backup-desc { font-size: 14px; color: var(--text-tertiary); margin-top: 4px; }

        /* Menu 2.5 Shamir Config */
        .config-input-group { display: flex; flex-direction: column; gap: 8px; text-align: left; width: 100%; }
        .config-input-group label { font-size: 15px; font-weight: 500; color: var(--text-secondary); }
        .config-input-group p { font-size: 13px; color: var(--text-tertiary); margin-top: -4px; }
        .config-input { width: 100%; background: var(--bg-secondary); border: 1px solid var(--border-secondary); border-radius: 8px; color: var(--text-primary); padding: 10px 12px; font-size: 15px; transition: border-color 0.1s ease-in-out; appearance: none; }
        .config-input:focus { border-color: var(--accent-primary); }
        select.config-input { background-image: var(--select-arrow-icon); background-position: right 0.5rem center; background-repeat: no-repeat; background-size: 1.5em 1.5em; padding-right: 2.5rem; }


        /* Menu 3: Seed Entry */
        .seed-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px 16px; width: 100%; padding: 4px; }
        .seed-input-wrapper { display: flex; align-items: center; gap: 8px; }
        .seed-input-wrapper label { font-size: 14px; color: var(--text-tertiary); width: 24px; text-align: right; }
        .seed-input { width: 100%; background: var(--bg-secondary); border: 1px solid var(--border-secondary); border-radius: 8px; color: var(--text-primary); padding: 8px 12px; font-size: 15px; transition: border-color 0.1s ease-in-out; }
        .seed-input:focus { border-color: var(--accent-primary); }
        .seed-input.invalid { border-color: var(--danger) !important; }

        /* Shamir Share blocks */
        #shares-container { display: flex; flex-direction: column; gap: 24px; width: 100%; margin: 8px 0; }
        .share-block { border: 1px solid var(--border-primary); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
        .share-block-title { font-size: 16px; font-weight: 600; color: var(--text-secondary); text-align: left; }
        #add-share-btn.popup-button { margin-top: 0; }

        /* Fake Error Message */
        .error-message {
            color: var(--danger);
            background-color: rgba(229, 62, 62, 0.1);
            border: 1px solid var(--danger);
            border-radius: 8px;
            padding: 10px 16px;
            font-size: 14px;
            font-weight: 500;
            width: 100%;
            text-align: center;
            margin-bottom: 8px;
        }

        @keyframes shake {
            10%, 90% { transform: translate3d(-1px, 0, 0); }
            20%, 80% { transform: translate3d(2px, 0, 0); }
            30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
            40%, 60% { transform: translate3d(4px, 0, 0); }
        }