/* ═══════════════════════════════════════════════════════════════════
           DATA CONVERTER — Tool-Specific Styles
           ═══════════════════════════════════════════════════════════════════ */

        /* ── Format arrow connector ── */
        .format-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.10);
            color: rgba(255,255,255,0.45);
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 0 8px rgba(255,255,255,0.06);
            transition: all 0.2s ease;
        }
        .format-selector-group:hover .format-arrow {
            color: rgba(255,255,255,0.70);
            border-color: rgba(255,255,255,0.18);
            box-shadow: 0 0 12px rgba(0,190,76,0.10);
        }

        /* ── Converter action buttons (backward compat + override) ── */
        .converter-btn {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.10);
            backdrop-filter: blur(12px);
            transition: all 0.2s cubic-bezier(0.23, 1, 0.32, 1);
            color: rgba(255,255,255,0.85);
            padding: 10px 24px;
            border-radius: 1rem;
            font-size: 0.875rem;
            font-weight: 500;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-family: var(--font-body);
        }
        .converter-btn:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.2);
            transform: translateY(-1px);
        }
        .converter-btn-primary {
            background: rgba(0, 190, 76, 0.12);
            border-color: rgba(0, 190, 76, 0.25);
            color: #00BE4C;
        }
        .converter-btn-primary:hover {
            background: rgba(0, 190, 76, 0.2);
            border-color: rgba(0, 190, 76, 0.4);
        }

        /* ── Emerald-accent primary button for Convert ── */
        .glass-btn-primary-emerald {
            background: rgba(0, 190, 76, 0.14);
            border: 1px solid rgba(0, 190, 76, 0.30);
            color: #00BE4C;
            padding: 10px 24px;
            border-radius: var(--radius-lg);
            font-size: 0.875rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.23, 1.0, 0.32, 1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-family: var(--font-body);
            box-shadow: 0 0 12px rgba(0, 190, 76, 0.06);
        }
        .glass-btn-primary-emerald:hover {
            background: rgba(0, 190, 76, 0.22);
            border-color: rgba(0, 190, 76, 0.50);
            transform: translateY(-1px);
            box-shadow: 0 0 20px rgba(0, 190, 76, 0.12);
        }
        .glass-btn-primary-emerald:active {
            transform: translateY(0);
        }

        /* ── Output panel accent line ── */
        .output-panel {
            position: relative;
        }
        .output-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 2rem;
            right: 2rem;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0,190,76,0.35), transparent);
            border-radius: 2px;
            opacity: 0.5;
            pointer-events: none;
            z-index: 2;
        }

        /* ── Empty state styling ── */
        .empty-state-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 0.75rem;
            color: rgba(255,255,255,0.20);
        }
        .empty-state-icon svg {
            width: 22px;
            height: 22px;
            stroke: currentColor;
            fill: none;
            stroke-width: 1.5;
        }

        /* ── Register table row remove button (stealth danger) ── */
        .row-remove-btn {
            color: rgba(255,255,255,0.25);
            font-size: 1.125rem;
            line-height: 1;
            transition: all 0.15s ease;
            padding: 4px 8px;
            border-radius: 6px;
            border: none;
            background: transparent;
            cursor: pointer;
        }
        .row-remove-btn:hover {
            color: #B43A3A;
            background: rgba(180,58,58,0.10);
        }

        /* ── Override JS-generated table input/select styles with glass look ── */
        #regTableBody input,
        #regTableBody select {
            width: 100%;
            background: rgba(255,255,255,0.07) !important;
            border: 1px solid rgba(255,255,255,0.15) !important;
            border-radius: 10px !important;
            padding: 8px 14px !important;
            font-family: var(--font-mono);
            font-size: 0.8125rem !important;
            color: #fff;
            outline: none;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        #regTableBody input:focus,
        #regTableBody select:focus {
            border-color: rgba(0,147,222,0.60) !important;
            box-shadow: 0 0 0 3px rgba(0,147,222,0.12) !important;
        }
        #regTableBody input:hover:not(:focus),
        #regTableBody select:hover:not(:focus) {
            border-color: rgba(255,255,255,0.28) !important;
        }
        #regTableBody input::placeholder {
            color: rgba(255,255,255,0.25);
        }
        #regTableBody select {
            font-family: var(--font-body);
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E") !important;
            background-repeat: no-repeat !important;
            background-position: right 10px center !important;
            padding-right: 30px !important;
        }
        #regTableBody select option {
            background: #1a1f2e;
            color: #fff;
        }
        #regTableBody input[type="number"] {
            -moz-appearance: textfield;
        }
        #regTableBody input[type="number"]::-webkit-inner-spin-button,
        #regTableBody input[type="number"]::-webkit-outer-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }

        /* ── Toast styling (JS creates .idc-toast) ── */
        .idc-toast {
            background: rgba(255,255,255,0.08) !important;
            backdrop-filter: blur(20px) saturate(200%) !important;
            -webkit-backdrop-filter: blur(20px) saturate(200%) !important;
            border: 1px solid rgba(255,255,255,0.15) !important;
            box-shadow: 0 16px 48px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.18) !important;
            border-radius: 16px !important;
            padding: 12px 20px !important;
            font-size: 0.875rem !important;
            color: #fff !important;
            animation: toast-in 0.3s cubic-bezier(0.23, 1.0, 0.32, 1) forwards !important;
            font-family: var(--font-body) !important;
        }

        /* ── Enhanced select for format selectors ── */
        .converter-select {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: 12px;
            padding: 10px 38px 10px 16px;
            font-family: var(--font-body);
            font-size: 0.875rem;
            color: #fff;
            outline: none;
            cursor: pointer;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-width: 170px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .converter-select option {
            background: #1a1f2e;
            color: #fff;
        }
        .converter-select:hover:not(:disabled) {
            border-color: rgba(255,255,255,0.32);
        }
        .converter-select:focus {
            border-color: rgba(0,147,222,0.60);
            box-shadow: 0 0 0 3px rgba(0,147,222,0.15);
        }

        /* ── Sample select ── */
        .sample-select {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 12px;
            padding: 10px 38px 10px 16px;
            font-family: var(--font-body);
            font-size: 0.8125rem;
            color: rgba(255,255,255,0.75);
            outline: none;
            cursor: pointer;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-width: 190px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='%23ffffff88' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .sample-select option {
            background: #1a1f2e;
            color: #fff;
        }
        .sample-select:hover:not(:disabled) {
            border-color: rgba(255,255,255,0.25);
            color: #fff;
        }
        .sample-select:focus {
            border-color: rgba(0,147,222,0.60);
            box-shadow: 0 0 0 3px rgba(0,147,222,0.15);
            color: #fff;
        }

        /* ── Register table scaled value dot (JS uses bg-emerald-400 / bg-white/20) ──
           These override the JS inline classes with our custom colors */
        #regTableBody .bg-brand-green {
            background: #00BE4C !important;
            box-shadow: 0 0 6px rgba(0,190,76,0.30);
        }
        #regTableBody .bg-white\\/20 {
            background: rgba(255,255,255,0.20) !important;
        }

        /* ── Responsive tweaks ── */
        @media (max-width: 640px) {
            .format-selector-stack {
                flex-direction: column;
                align-items: stretch;
            }
            .format-selector-stack .format-arrow {
                transform: rotate(90deg);
                margin: 0 auto;
            }
            .format-selector-stack > div {
                width: 100%;
            }
            .format-selector-stack select {
                width: 100%;
            }
            .converter-actions {
                flex-direction: column;
            }
            .converter-actions > * {
                width: 100%;
            }
        }