* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
        }

        body {
            background: linear-gradient(145deg, #1e2b3a, #14212e);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
        }

        .banner-studio {
            background: rgba(18, 28, 40, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 3rem;
            box-shadow: 0 30px 50px -20px #00000080, 0 0 0 1px #4f7f9e;
            width: 100%;
            max-width: 1400px;
            padding: 2.2rem 2.5rem;
            border: 1px solid #5287a8;
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
        }

        h1 {
            font-size: 2.8rem;
            font-weight: 700;
            background: linear-gradient(140deg, #b3e2ff, #7fc9ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .secure-badge {
            background: #1d3c50;
            color: #c3edff;
            padding: 0.5rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid #5da9d0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 4px 12px #0a1e2c;
        }

        .sub {
            color: #afd6f0;
            margin-bottom: 2rem;
            border-left: 4px solid #2fa0df;
            padding-left: 1.2rem;
            background: #1f405730;
            border-radius: 0 20px 20px 0;
        }

        .workspace {
            display: grid;
            grid-template-columns: 1.3fr 1.7fr;
            gap: 2rem;
        }

        /* left panel — controls & properties */
        .control-panel {
            background: #0f263570;
            border-radius: 2.5rem;
            padding: 1.8rem 1.8rem;
            border: 1px solid #457a9b;
            backdrop-filter: blur(4px);
            max-height: 80vh;
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: #2e6a8e #0b1d2b;
        }

        .control-group {
            margin-bottom: 2rem;
            border-bottom: 1px dashed #3c6f90;
            padding-bottom: 1rem;
        }

        .control-group h3 {
            color: #c2e2ff;
            font-size: 1.2rem;
            margin-bottom: 1rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .field {
            margin-bottom: 1.2rem;
        }

        .field label {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.85rem;
            text-transform: uppercase;
            color: #9ac7e5;
            margin-bottom: 0.3rem;
        }

        input, select, textarea {
            width: 100%;
            background: #0b1d2b;
            border: 1.5px solid #306a89;
            border-radius: 1.8rem;
            padding: 0.8rem 1.2rem;
            font-size: 0.95rem;
            outline: none;
            color: #e9f4ff;
        }

        input:focus, select:focus {
            border-color: #60b5f0;
            box-shadow: 0 0 0 3px #1e5779;
        }

        .color-row {
            display: flex;
            gap: 1rem;
            align-items: center;
        }
        .color-row input[type="color"] {
            width: 60px;
            height: 45px;
            padding: 0.2rem;
            border-radius: 1rem;
            background: #0b1d2b;
        }

        .dimension-row {
            display: flex;
            gap: 1rem;
        }
        .dimension-row input {
            flex: 1;
        }

        /* MULTI UPLOAD ZONE */
        .multi-zone {
            background: #0f263f;
            border-radius: 2rem;
            padding: 1.2rem 1rem;
            border: 2px dashed #58b1de;
            margin-bottom: 1rem;
        }
        .multi-zone input[type="file"] {
            border: none;
            background: #1b3e58;
            margin-bottom: 0.8rem;
            padding: 0.9rem;
        }
        .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 0.8rem 0;
            max-height: 120px;
            overflow-y: auto;
            background: #0c1c2b;
            padding: 0.6rem;
            border-radius: 1.5rem;
        }
        .image-badge {
            background: #124f72;
            color: #d8f0ff;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.7rem;
            border: 1px solid #6cb9ea;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            max-width: 140px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .image-badge span {
            background: #0d3143;
            border-radius: 50%;
            width: 18px;
            height: 18px;
            font-size: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid #9acff2;
        }
        .file-warning {
            color: #ffb4a0;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .global-image-size {
            display: flex;
            gap: 1rem;
            margin: 1rem 0 0.5rem;
        }
        .global-image-size input {
            flex: 1;
        }

        .button-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2rem;
        }

        .btn {
            border: none;
            background: #1b4057;
            padding: 0.9rem 2rem;
            border-radius: 3rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            border: 1px solid #479bc2;
            color: #e2f0ff;
            transition: 0.15s;
        }
        .btn-primary {
            background: #1b6a8f;
            color: white;
            border: none;
            box-shadow: 0 10px 18px -10px #09435c;
        }
        .btn-primary:hover {
            background: #12547a;
            transform: scale(1.02);
        }
        .btn-download {
            background: #1b5c79;
            border: 1px solid #58b9e6;
        }
        .btn-warning {
            background: #4c3b56;
            border-color: #b089c0;
        }

        /* canvas panel */
        .canvas-panel {
            background: #0a1d2b70;
            border-radius: 2.5rem;
            padding: 1.8rem;
            border: 1px solid #4682a5;
            display: flex;
            flex-direction: column;
        }

        .canvas-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        .canvas-header h3 {
            color: #c5e6ff;
            font-size: 1.4rem;
        }

        .canvas-container {
            background: #143544;
            border-radius: 2rem;
            padding: 1.5rem;
            display: flex;
            justify-content: center;
            align-items: center;
            border: 2px solid #3f88b0;
        }

        canvas {
            max-width: 100%;
            height: auto;
            border-radius: 1.5rem;
            box-shadow: 0 10px 20px -5px black;
            background: white;
        }

        .meta-info {
            margin-top: 1.2rem;
            color: #9ac9e5;
            display: flex;
            gap: 2rem;
            font-size: 0.85rem;
        }