* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background: #f5f5f5;
    color: #1a1a1a;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    background: #ffffff;
    min-height: 100vh;
}

header {
    border-bottom: 1px solid #e0e0e0;
    padding: 12px 20px;
}

.header-content {
    display: flex;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-icon {
    flex-shrink: 0;
    color: #1a1a1a;
}

h1 {
    font-size: 16px;
    font-weight: 600;
}

.main-content {
    display: flex;
    gap: 24px;
    padding: 16px 20px;
    flex-wrap: wrap;
}

.panel {
    flex: 1;
    min-width: 280px;
}

.field-group {
    margin-bottom: 16px;
    position: relative;
}

.field-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.xyz-row {
    flex-wrap: nowrap;
}

.field {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 6px 10px;
    flex: 1;
    min-width: 0;
}

.field-label {
    font-size: 12px;
    color: #888;
}

.field input {
    width: 34px;
    min-width: 0;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 14px;
    color: #1a1a1a;
    text-align: center;
}

.field input:focus {
    outline: none;
}

.field-sep {
    color: #999;
    font-size: 14px;
    flex-shrink: 0;
}

.info-btn {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid #ddd;
    background: #f5f5f5;
    color: #666;
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.info-btn:hover, .info-btn[aria-expanded="true"] {
    background: #1a1a1a;
    color: #fff;
    border-color: #1a1a1a;
}

.info-popover {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 10;
    width: 260px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 12px 14px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.info-popover p {
    font-size: 12px;
    color: #444;
    line-height: 1.4;
    margin-bottom: 10px;
}

.bin-list-header {
    display: grid;
    grid-template-columns: 1.6fr 1fr 0.6fr 20px;
    gap: 6px;
    font-size: 10px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0 4px;
    margin-bottom: 6px;
}

.bin-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 8px;
}

.bin-row {
    display: grid;
    grid-template-columns: 1.6fr 1fr 0.6fr 20px;
    gap: 6px;
    align-items: center;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 6px 8px;
}

.bin-row-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-width: 0;
    padding-left: 8px;
}

.bin-row-group:first-child {
    padding-left: 0;
    justify-content: flex-start;
}

.bin-row-group:not(:first-child) {
    border-left: 1px solid #e0e0e0;
}

.bin-row input {
    width: 24px;
    flex-shrink: 0;
    min-width: 0;
    border: none;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    text-align: center;
    font-family: inherit;
    font-size: 12px;
    color: #1a1a1a;
    padding: 3px 2px;
}

.bin-row input:focus {
    outline: none;
    border-color: #999;
}

.bin-row .sep {
    color: #aaa;
    font-size: 11px;
    flex-shrink: 0;
}

.remove-bin-btn {
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    color: #bbb;
    font-size: 15px;
    cursor: pointer;
    line-height: 1;
}

.remove-bin-btn:hover {
    color: #b03a2a;
}

.add-bin-btn {
    width: 100%;
    background: none;
    border: 1px dashed #ccc;
    border-radius: 6px;
    padding: 8px;
    font-family: inherit;
    font-size: 12px;
    color: #666;
    cursor: pointer;
}

.add-bin-btn:hover {
    border-color: #999;
    color: #1a1a1a;
}

.note-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.note-list li {
    font-size: 12px;
    color: #555;
    padding-left: 14px;
    position: relative;
    line-height: 1.4;
}

.note-list li::before {
    content: "-";
    position: absolute;
    left: 0;
    color: #aaa;
}

.generate-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #1a1a1a;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.generate-btn:hover {
    background: #333;
}

.generate-btn:disabled {
    background: #aaa;
    cursor: default;
}

.status {
    margin-top: 12px;
    font-size: 12px;
    color: #888;
    min-height: 16px;
}

.status-ok {
    color: #2a7a3a;
}

.status-error {
    color: #b03a2a;
}

.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-section {
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 12px;
    background: #fafafa;
}

.preview-title {
    font-size: 11px;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
}

.preview-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.preview-title-row .preview-title {
    margin-bottom: 0;
}

.rotate-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 3px 8px;
    font-family: inherit;
    font-size: 11px;
    color: #555;
    cursor: pointer;
}

.rotate-btn:hover {
    border-color: #999;
    color: #1a1a1a;
}

#top-view, #iso-view {
    width: 100%;
    height: 200px;
    display: block;
}

.outline {
    fill: #eef2f7;
    stroke: #35537a;
    stroke-width: 0.6;
}

.grid-envelope {
    fill: none;
    stroke: #bbb;
    stroke-width: 0.5;
    stroke-dasharray: 2 2;
}

.gridline {
    stroke: #c7d2e0;
    stroke-width: 0.4;
    stroke-dasharray: 2 2;
}

.hole {
    fill: #35537a;
    opacity: 0.55;
}

.bin-footprint-1 { fill: #cfe0f3; stroke: #35537a; }
.bin-footprint-2 { fill: #f7d7bd; stroke: #a65a1e; }
.bin-footprint-3 { fill: #d3ecd0; stroke: #2a7a3a; }
.bin-footprint-4 { fill: #e9d6ef; stroke: #6a3a8a; }
.bin-footprint-5 { fill: #c8ece6; stroke: #1f7a6c; }
.bin-footprint-6 { fill: #f5d4de; stroke: #a83c5e; }
.bin-footprint-7 { fill: #f5e6b8; stroke: #8a6d1f; }

.bin-footprint {
    stroke-width: 0.6;
    opacity: 0.9;
}

.bin-label {
    font-size: 5px;
    fill: #333;
    font-family: 'JetBrains Mono', monospace;
}

.iso-top-1 { fill: #cfe0f3; }
.iso-top-2 { fill: #f7d7bd; }
.iso-top-3 { fill: #d3ecd0; }
.iso-top-4 { fill: #e9d6ef; }
.iso-top-5 { fill: #c8ece6; }
.iso-top-6 { fill: #f5d4de; }
.iso-top-7 { fill: #f5e6b8; }

.iso-sideA-1 { fill: #a9c4e3; }
.iso-sideA-2 { fill: #e3b690; }
.iso-sideA-3 { fill: #a9d0a3; }
.iso-sideA-4 { fill: #c6a3d6; }
.iso-sideA-5 { fill: #8fd0c5; }
.iso-sideA-6 { fill: #e3a8bb; }
.iso-sideA-7 { fill: #ddc77a; }

.iso-sideB-1 { fill: #8fb0d6; }
.iso-sideB-2 { fill: #d49f72; }
.iso-sideB-3 { fill: #8cbd85; }
.iso-sideB-4 { fill: #b38cc8; }
.iso-sideB-5 { fill: #6bb8ab; }
.iso-sideB-6 { fill: #d488a0; }
.iso-sideB-7 { fill: #c9ac52; }

.iso-face {
    stroke: #ffffff;
    stroke-width: 0.3;
}

.iso-board-top {
    fill: #e2dccf;
}

.iso-gridline {
    stroke: #b8af9a;
    stroke-width: 0.3;
}

.iso-bin-gridline {
    stroke: rgba(255, 255, 255, 0.5);
    stroke-width: 0.3;
}

.iso-lip-line {
    stroke: #8a7558;
    stroke-width: 0.6;
    opacity: 0.6;
}

.level-line {
    stroke: #888;
    stroke-width: 0.4;
    stroke-dasharray: 1.5 1.5;
}

.dims {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 12px;
}

.dims > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: #f5f5f5;
    border-radius: 6px;
    padding: 8px 10px;
}

.dims span {
    color: #888;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.dims strong {
    font-size: 13px;
    color: #1a1a1a;
}

@media (max-width: 680px) {
    .main-content {
        flex-direction: column;
    }
}