:root {
            --page-bg: rgb(255, 255, 255);
            --ui-ink: #15161b;
            --ui-border: #15161b;
            --ui-hover: rgba(21, 22, 27, 0.08);
            --canvas-text-color: rgb(21, 22, 27);
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            padding: 0 0 210px;
            background-color: var(--page-bg);
            font-family: "SN Pro", sans-serif;
            min-height: 100vh;
            transition: background-color 120ms linear;
        }

        .top-controls {
            position: fixed;
            top: 12px;
            left: 12px;
            z-index: 20;
            display: flex;
            align-items: flex-start;
            justify-content: flex-start;
            gap: 10px;
            width: max-content;
        }

        .top-icon-stack {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .top-icon-column {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .top-actions-menu {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .top-control-btn.top-mobile-menu-btn {
            display: none;
            width: 42px;
            padding: 0;
            font-size: 18px;
        }

        .top-control-btn {
            min-height: 42px;
            min-width: 42px;
            border: none;
            background: color-mix(in srgb, var(--page-bg) 96%, white 4%);
            color: var(--ui-ink);
            border-radius: 8px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 12px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            font-family: inherit;
            position: relative;
        }

        .top-control-btn:hover {
            background: var(--ui-hover);
        }

        .top-control-btn[data-tooltip]::after {
            content: attr(data-tooltip);
            position: absolute;
            left: calc(100% + 3px);
            top: 50%;
            transform: translateY(-50%) translateX(-4px);
            padding: 5px 8px;
            color: var(--ui-ink);
            font-size: 12px;
            font-weight: 600;
            line-height: 1;
            letter-spacing: 0;
            opacity: 0;
            pointer-events: none;
            text-transform: lowercase;
            transition: opacity 140ms ease, transform 140ms ease;
            white-space: nowrap;
            z-index: 50;
        }

        .top-control-btn[data-tooltip]:hover::after,
        .top-control-btn[data-tooltip]:focus-visible::after {
            opacity: 0.88;
            transform: translateY(-50%) translateX(0);
        }

        .contact-link {
            gap: 8px;
            justify-content: center;
            text-decoration: none;
            width: 42px;
            padding: 0;
            font-size: 18px;
        }

        .contact-link-text {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .trash-btn {
            width: 42px;
            padding: 0;
            font-size: 18px;
        }

        .help-btn {
            width: 42px;
            padding: 0;
            font-size: 18px;
        }

        .info-btn {
            width: 42px;
            padding: 0;
            font-size: 18px;
        }

        .trash-btn.is-drop-target {
            border-color: #d62424;
            color: #d62424;
            background: color-mix(in srgb, #d62424 10%, var(--page-bg));
        }

        .save-modal[hidden] {
            display: none;
        }

        .save-modal {
            position: fixed;
            inset: 0;
            z-index: 30;
            display: grid;
            place-items: center;
            background: rgba(10, 11, 14, 0.25);
            padding: 18px;
        }

        .save-modal-panel {
            width: min(680px, 100%);
            border: 2px solid var(--ui-border);
            border-radius: 10px;
            background: color-mix(in srgb, var(--page-bg) 96%, white 4%);
            color: var(--ui-ink);
            padding: 14px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
        }

        .save-modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 10px;
        }

        .save-modal-title {
            font-size: 16px;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .save-modal-actions {
            display: flex;
            gap: 8px;
        }

        .save-modal-btn {
            border: 2px solid var(--ui-border);
            background: transparent;
            color: var(--ui-ink);
            border-radius: 8px;
            padding: 8px 10px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            line-height: 1;
            font-family: inherit;
        }

        .save-modal-btn:hover {
            background: var(--ui-hover);
        }

        .save-note {
            width: 100%;
            min-height: 260px;
            resize: vertical;
            border: 2px solid var(--ui-border);
            background: transparent;
            color: var(--ui-ink);
            padding: 10px 12px;
            font: 13px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            outline: none;
        }

        .save-copy-status {
            margin-top: 8px;
            min-height: 1em;
            font-size: 12px;
            opacity: 0.85;
        }

        .help-contact-prompt {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid color-mix(in srgb, var(--ui-border) 24%, transparent);
            font-size: 13px;
            line-height: 1.35;
        }

        .help-contact-prompt p {
            margin: 0;
            opacity: 0.82;
        }

        .help-contact-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--ui-border);
            border-radius: 8px;
            color: var(--ui-ink);
            flex: 0 0 auto;
            width: 38px;
            height: 38px;
            font-size: 17px;
            line-height: 1;
            text-decoration: none;
        }

        .help-contact-link:hover {
            background: var(--ui-hover);
        }

        .help-modal-content {
            display: grid;
            gap: 10px;
            font-size: 15px;
            line-height: 1.45;
        }

        .help-modal-content p {
            margin: 0;
        }

        .brand-moods-content {
            display: grid;
            gap: 12px;
            font-size: 15px;
            line-height: 1.4;
        }

        .brand-moods-content p {
            margin: 0;
        }

        .brand-mood-list {
            display: grid;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding-left: 0;
        }

        .brand-mood-list li {
            padding-left: 0;
        }

        .brand-mood-list button {
            width: 100%;
            border: 2px solid var(--ui-border);
            background: transparent;
            color: var(--ui-ink);
            border-radius: 8px;
            padding: 10px 12px;
            cursor: pointer;
            font: inherit;
            font-weight: 700;
            text-align: center;
        }

        .brand-mood-list button:hover {
            background: var(--ui-hover);
        }

        .contact-card-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            gap: 10px;
            min-height: 190px;
            padding: 12px 8px 2px;
        }

        .contact-card-icon {
            font-size: 40px;
            color: rgb(211, 211, 211);
        }

        .contact-card-message {
            margin: 0;
            font-size: clamp(15px, 1.4vw, 20px);
            line-height: 1.2;
            font-weight: 500;
        }

        .contact-card-email {
            margin: 0;
            font-size: 13px;
            opacity: 0.9;
            color: var(--ui-ink);
            text-decoration: underline;
        }

        .app-shell {
            min-height: calc(100vh - 210px);
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            align-items: stretch;
            position: relative;
        }

        .playground-canvas {
            position: relative;
            min-height: calc(100vh - 210px);
            overflow: visible;
            padding: 14px;
        }

        .canvas-item {
            position: absolute;
            margin: 0;
            color: var(--canvas-text-color);
            line-height: 1.05;
            max-width: min(70ch, calc(100% - 40px));
            word-break: break-word;
            cursor: grab;
            user-select: none;
            touch-action: none;
        }

        .canvas-item.dragging {
            cursor: grabbing;
        }

        .canvas-item.selected {
            outline: 2px dashed var(--ui-border);
            outline-offset: 4px;
        }

        .mood-type-item {
            min-width: min(360px, calc(100% - 40px));
            padding: 2px 4px;
            border-radius: 4px;
            outline: none;
            white-space: pre-wrap;
        }

        .mood-type-item:focus {
            outline: 2px solid var(--ui-border);
            outline-offset: 4px;
        }

        .selection-marquee {
            position: absolute;
            z-index: 35;
            border: 2px dashed var(--ui-border);
            background: color-mix(in srgb, var(--ui-ink) 10%, transparent);
            pointer-events: none;
        }

        .playground-canvas h1.canvas-item,
        .playground-canvas h2.canvas-item,
        .playground-canvas h3.canvas-item,
        .playground-canvas h4.canvas-item,
        .playground-canvas p.canvas-item {
            margin: 0;
        }

        .playground-canvas h1.canvas-item { font-size: clamp(40px, 5vw, 70px); }
        .playground-canvas h2.canvas-item { font-size: clamp(32px, 4vw, 56px); }
        .playground-canvas h3.canvas-item { font-size: clamp(26px, 3vw, 42px); }
        .playground-canvas h4.canvas-item { font-size: clamp(22px, 2.4vw, 32px); }
        .playground-canvas p.canvas-item { font-size: clamp(16px, 1.6vw, 22px); line-height: 1.25; }

        .type-composer {
            position: absolute;
            top: 24px;
            left: 24px;
            width: min(520px, calc(100% - 160px));
            z-index: 40;
        }

        .type-composer[hidden] {
            display: none;
        }

        .type-composer-shell {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 64px;
            border: 2px solid var(--ui-border);
            background: color-mix(in srgb, var(--page-bg) 95%, white 5%);
            min-height: 58px;
        }

        .type-input {
            border: none;
            background: transparent;
            color: var(--ui-ink);
            font-size: 18px;
            padding: 14px 18px;
            width: 100%;
            outline: none;
        }

        .type-input::placeholder {
            color: color-mix(in srgb, var(--ui-ink) 48%, transparent);
        }

        .menu-button {
            border: none;
            border-left: 2px solid var(--ui-border);
            background: transparent;
            color: var(--ui-ink);
            font-size: 26px;
            line-height: 1;
            cursor: pointer;
        }

        .menu-button:hover {
            background: var(--ui-hover);
        }

        .menu-panel {
            display: none;
            margin-top: 8px;
            border: 2px solid var(--ui-border);
            background: color-mix(in srgb, var(--page-bg) 96%, white 4%);
            max-height: 200px;
            overflow-y: auto;
            position: relative;
            z-index: 41;
        }

        .menu-panel.open {
            display: block;
        }

        .menu-panel.open-up {
            position: absolute;
            left: 0;
            right: 0;
            bottom: calc(100% + 8px);
            margin-top: 0;
        }

        .font-menu-list {
            display: flex;
            flex-direction: column;
            padding: 6px;
            gap: 4px;
        }

        .font-menu-item {
            width: 100%;
            border: 1px solid transparent;
            background: transparent;
            color: var(--ui-ink);
            text-align: left;
            padding: 10px 12px;
            font-size: 18px;
            line-height: 1.1;
            cursor: pointer;
            border-radius: 4px;
        }

        .font-menu-item:hover {
            background: var(--ui-hover);
        }

        .font-menu-item.active {
            border-color: var(--ui-border);
            background: color-mix(in srgb, var(--ui-hover) 80%, transparent);
        }

        .button-column {
            display: flex;
            flex-direction: column;
            gap: 50px;
            padding: 14px 20px 14px 0;
            position: relative;
            z-index: 1;
            align-items: center;
            justify-content: flex-start;
        }

        .button-column > button {
            border: none;
            padding: 2px 14px;
            font-size: clamp(44px, 5vw, 66px);
            cursor: pointer;
            background-color: transparent;
            border-radius: 4px;
            transition: background-color 0.3s;
            color: var(--ui-ink);
            line-height: 1;
            text-transform: lowercase;
              font-family: inherit;
        }

        .button-column > button:hover {
            background-color: var(--ui-hover);
        }

        .customizer-dock {
            position: fixed;
            left: 12px;
            right: 12px;
            bottom: 12px;
            z-index: 10;
            color: var(--ui-ink);
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 12px;
            font-family: inherit;
        }

        .mobile-customizer-tabs {
            display: none;
        }

        .mobile-customizer-tab {
            border: none;
            background: transparent;
            color: var(--ui-ink);
            border-radius: 8px;
            padding: 8px 10px;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
        }

        .mobile-customizer-tab.active {
            background: color-mix(in srgb, var(--ui-ink) 8%, var(--page-bg));
        }

        .customizer-shell {
            position: relative;
            border: 3px solid var(--ui-border);
            border-radius: 6px;
            padding: 12px 14px 12px;
            background: color-mix(in srgb, var(--page-bg) 96%, white 4%);
        }

        .tab-row {
            position: absolute;
            top: -3px;
            left: 0px;
            right: 0px;
            display: flex;
            align-items: flex-start;
            gap: 0;
            transform: translateY(-100%);
        }

        .tab-btn {
            min-width: 58px;
            padding: 10px 0;
            margin: 0;
            border: none;
            border-bottom: none;
            background: transparent;
            color: var(--ui-ink);
            font-size: clamp(12px, 1.2vw, 16px);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1;
            cursor: pointer;
            font-family: inherit;
            text-align: left;
            border-radius: 6px;
        }


        .tab-btn[aria-selected="false"] {
            opacity: 0.9;
        }

        .tab-btn.active {
            background: color-mix(in srgb, var(--page-bg) 97%, white 3%);
            position: relative;
            z-index: 2;
        }

        .tab-btn:not(.active) {
            background: color-mix(in srgb, var(--page-bg) 92%, white 8%);
            z-index: 1;
        }

        .tab-row-label {
            margin-left: auto;
            padding: 10px 5px;
            color: var(--ui-ink);
            font-size: clamp(12px, 1vw, 14px);
            font-weight: 600;
            line-height: 1;
            opacity: 0.58;
            white-space: nowrap;
        }

        .panel {
            display: none;
        }

        .panel.active {
            display: block;
        }

        .hex-group {
            min-height: 112px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hex-input {
            width: 100%;
            border: 2px solid var(--ui-border);
            border-radius: 6px;
            background: transparent;
            color: var(--ui-ink);
            font: 700 18px/1 "SN Pro", sans-serif;
            letter-spacing: 0.04em;
            outline: none;
            padding: 12px 14px;
            text-transform: uppercase;
        }

        .hex-input::placeholder {
            color: color-mix(in srgb, var(--ui-ink) 46%, transparent);
        }

        .hex-input.invalid {
            border-color: #d62424;
        }

        .slider-group {
            margin-bottom: 12px;
        }

        .slider-group:last-child {
            margin-bottom: 0;
        }

        .slider-label {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-bottom: 6px;
            font-size: clamp(14px, 1.2vw, 18px);
            font-weight: 500;
            color: var(--ui-ink);
        }

        .slider-label .value {
            font-variant-numeric: tabular-nums;
        }

        .slider {
            width: 100%;
            appearance: none;
            -webkit-appearance: none;
            height: 7px;
            border-radius: 999px;
            background: color-mix(in srgb, var(--ui-ink) 92%, transparent);
            outline: none;
        }

        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--ui-ink);
            border: 2px solid var(--ui-ink);
            cursor: pointer;
            margin-top: -5px;
        }

        .slider::-moz-range-track {
            height: 7px;
            border-radius: 999px;
            background: color-mix(in srgb, var(--ui-ink) 92%, transparent);
        }

        .slider::-moz-range-thumb {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--ui-ink);
            border: 2px solid var(--ui-ink);
            cursor: pointer;
        }

        .placeholder-panel {
            min-height: 112px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 10px;
        }

        .placeholder-title {
            font-size: clamp(14px, 1.1vw, 17px);
            font-weight: 700;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .placeholder-note {
            margin: 0;
            font-size: 13px;
            opacity: 0.85;
        }

        .placeholder-line {
            width: 100%;
            height: 7px;
            border-radius: 999px;
            background: color-mix(in srgb, var(--ui-ink) 92%, transparent);
            opacity: 0.35;
        }

        .placeholder-tabs .tab-btn {
            cursor: default;
        }

        .placeholder-tabs .tab-btn:disabled {
            opacity: 1;
        }

        @media (max-width: 780px) {
            body {
                padding-bottom: 360px;
            }

            .app-shell {
                grid-template-columns: 1fr;
                min-height: auto;
                padding-top: 54px;
            }

            .playground-canvas {
                min-height: 52vh;
                padding: 10px;
            }

            .type-composer {
                top: 10px;
                left: 10px;
                width: auto;
            }

            .type-composer-shell {
                grid-template-columns: minmax(0, 1fr) 52px;
                min-height: 50px;
            }

            .type-input {
                font-size: 16px;
                padding: 12px 14px;
            }

            .menu-button {
                font-size: 22px;
            }
            .button-column {
                position: fixed;
                top: 56px;
                left: 50%;
                transform: translateX(-50%);
                z-index: 18;
                width: auto;
                align-items: center;
                flex-direction: row;
                justify-content: center;
                padding: 6px 10px;
                gap: 8px;
            }

            .button-column > button {
                font-size: 34px;
                padding: 4px 10px;
            }

            .top-controls {
                top: 10px;
                left: 10px;
                gap: 8px;
                justify-content: flex-start;
            }

            .top-control-btn {
                min-height: 38px;
                min-width: 38px;
                font-size: 14px;
            }

            .top-control-btn.top-mobile-menu-btn {
                display: none;
            }

            .contact-link-text {
                display: none;
            }

            .top-actions-menu {
                display: flex;
                flex-direction: row;
                align-items: stretch;
                gap: 6px;
            }

            .top-actions-menu .top-control-btn {
                justify-content: center;
                padding: 0 10px;
            }

            .save-modal {
                padding: 10px;
            }

            .save-modal-panel {
                padding: 10px;
            }

            .save-modal-header {
                align-items: flex-start;
                flex-direction: column;
            }

            .save-note {
                min-height: 220px;
            }

            .help-contact-prompt {
                align-items: flex-start;
                flex-direction: column;
            }

            .customizer-dock {
                left: 10px;
                right: 10px;
                bottom: 10px;
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .mobile-customizer-tabs {
                display: flex;
                align-items: center;
                gap: 6px;
                border: 2px solid var(--ui-border);
                border-radius: 8px;
                padding: 4px;
                background: color-mix(in srgb, var(--page-bg) 96%, white 4%);
            }

            .mobile-customizer-tab {
                flex: 1;
                text-align: center;
            }

            .customizer-dock > section {
                display: none;
            }

            .customizer-dock > section.active-mobile {
                display: block;
            }

            .customizer-shell {
                padding: 10px 12px 10px;
                border-width: 3px;
            }

            .tab-row {
                position: static;
                left: auto;
                right: auto;
                top: auto;
                transform: none;
                margin-bottom: 8px;
                align-items: center;
            }

            .tab-btn {
                min-width: 64px;
                padding: 8px 12px;
                border-width: 3px;
            }


            .slider {
                height: 7px;
            }

            .slider::-webkit-slider-thumb {
                width: 16px;
                height: 16px;
                margin-top: -4px;
            }

            .slider::-moz-range-track {
                height: 7px;
            }

            .slider::-moz-range-thumb {
                width: 16px;
                height: 16px;
            }
        }