:root {
    --bg: #edf3f8;
    --bg-soft: #f8fbff;
    --card: #ffffff;
    --line: #d7e2ee;
    --line-strong: #b5c8dc;
    --text: #18324a;
    --muted: #60758c;
    --blue: #2a70c9;
    --blue-deep: #184f93;
    --teal: #0d8c8c;
    --green: #2f9d5b;
    --orange: #f59f44;
    --danger: #dc5d5d;
    --shadow: 0 18px 42px rgba(24, 50, 74, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(42, 112, 201, 0.10), transparent 28%),
        radial-gradient(circle at top right, rgba(13, 140, 140, 0.10), transparent 24%),
        linear-gradient(180deg, #f5f9fc 0%, var(--bg) 100%);
    color: var(--text);
    font-family: "Segoe UI", "Microsoft YaHei UI", sans-serif;
}

.page-shell {
    width: min(1500px, calc(100vw - 24px));
    margin: 0 auto 28px;
}

.workspace {
    display: grid;
    grid-template-columns: 296px minmax(0, 1fr) 320px;
    gap: 18px;
    align-items: start;
}

.panel {
    background: var(--card);
    border: 1px solid rgba(183, 202, 223, 0.85);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 18px 12px;
}

.panel-title {
    margin: 0;
    font-size: 18px;
    font-weight: 800;
}

.panel-subtitle {
    color: var(--muted);
    font-size: 12px;
}

.panel-body {
    padding: 0 18px 18px;
}

.login-panel {
    display: none;
    padding: 22px;
}

.login-panel.active {
    display: block;
}

.login-card {
    max-width: 720px;
    margin: 0 auto;
    padding: 30px;
    border-radius: 24px;
    background: var(--card);
    border: 1px solid rgba(183, 202, 223, 0.85);
    box-shadow: var(--shadow);
}

.login-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
    gap: 22px;
    align-items: start;
}

.login-title {
    margin: 0 0 10px;
    font-size: 26px;
    font-weight: 800;
}

.login-copy {
    color: var(--muted);
    line-height: 1.8;
    font-size: 14px;
}

.login-note {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 16px;
    background: #eff7ff;
    color: var(--blue-deep);
    font-size: 13px;
    line-height: 1.8;
    border: 1px solid #cce0fb;
}

.auth-box {
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(180deg, #f7fbff 0%, #edf6ff 100%);
    border: 1px solid #d7e6f7;
}

.label {
    display: block;
    margin: 0 0 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
}

.input,
.select,
.number-input {
    width: 100%;
    padding: 11px 12px;
    border-radius: 12px;
    border: 1px solid var(--line-strong);
    background: #fff;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.input:focus,
.select:focus,
.number-input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(42, 112, 201, 0.10);
}

.button-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    appearance: none;
    border: 0;
    border-radius: 12px;
    padding: 11px 16px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(24, 50, 74, 0.10);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
    color: #fff;
}

.btn-teal {
    background: linear-gradient(135deg, #1ca4a4 0%, #0d8c8c 100%);
    color: #fff;
}

.btn-light {
    background: #eef4fa;
    color: var(--text);
}

.btn-danger {
    background: #fff2f2;
    color: var(--danger);
}

.btn-ghost {
    background: transparent;
    color: var(--blue);
    border: 1px solid #cfe0f5;
}

.workspace-shell {
    display: none;
}

.workspace-shell.active {
    display: grid;
    gap: 16px;
}

.project-top-panel {
    overflow: hidden;
}

.project-list-top {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    max-height: 220px;
}

.aside-sticky {
    position: sticky;
    top: 104px;
}

.section-stack {
    display: grid;
    gap: 16px;
}

.asset-toolbar,
.project-toolbar,
.inspector-toolbar {
    display: grid;
    gap: 10px;
    margin-bottom: 14px;
}

.insert-panel {
    display: grid;
    gap: 10px;
}

.insert-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.asset-count,
.save-badge,
.user-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 999px;
    background: #eef6ff;
    color: var(--blue-deep);
    font-size: 12px;
    font-weight: 700;
}

.save-badge.dirty {
    background: #fff6e6;
    color: #9b6500;
}

.save-badge.saved {
    background: #edf9f0;
    color: #1f7a42;
}

.asset-list,
.insert-list,
.project-list,
.layer-list {
    display: grid;
    gap: 10px;
    max-height: 320px;
    overflow: auto;
    padding-right: 4px;
}

.insert-list {
    max-height: 980px;
}

.asset-item,
.project-item,
.layer-item {
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--bg-soft);
}

.asset-item {
    padding: 12px;
    display: grid;
    gap: 10px;
}

.asset-item.drag-ready {
    cursor: grab;
}

.asset-item.drag-ready:active {
    cursor: grabbing;
}

.insert-card {
    display: grid;
    gap: 10px;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, #fcfeff 0%, #f4f9ff 100%);
}

.insert-card.drag-ready {
    cursor: grab;
}

.insert-card.drag-ready:active {
    cursor: grabbing;
}

.insert-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    padding: 10px;
    border-radius: 14px;
    border: 1px solid #d4e2f0;
    background:
        linear-gradient(45deg, rgba(42, 112, 201, 0.03) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(42, 112, 201, 0.03) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(42, 112, 201, 0.03) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(42, 112, 201, 0.03) 75%),
        #fff;
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    overflow: hidden;
}

.insert-preview-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.insert-preview-image,
.insert-preview-embed svg {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.insert-preview-embed {
    width: 100%;
}

.insert-card-body {
    display: grid;
    gap: 6px;
}

.insert-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.insert-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(42, 112, 201, 0.10);
    color: var(--blue-deep);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.asset-head,
.project-head,
.layer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.asset-name,
.project-name,
.layer-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
}

.asset-meta,
.project-meta,
.layer-meta {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.6;
}

.asset-action {
    padding: 8px 12px;
    border-radius: 10px;
    border: 0;
    background: #deedff;
    color: var(--blue-deep);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.asset-actions {
    display: grid;
    justify-items: end;
    gap: 6px;
}

.asset-drag-tip {
    font-size: 11px;
    font-weight: 700;
    color: var(--teal);
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(13, 140, 140, 0.10);
}

.project-item,
.layer-item {
    padding: 12px;
}

.project-item.active,
.layer-item.active {
    border-color: #8eb4df;
    background: #eef6ff;
}

.project-actions,
.layer-actions,
.tiny-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.project-actions-gap {
    margin-top: 10px;
}

.asset-section-gap {
    margin-top: 8px;
}

.tiny-btn {
    padding: 6px 10px;
    border-radius: 10px;
    border: 0;
    background: #e7f0fb;
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.tiny-btn.warn {
    background: #fff3e6;
    color: #9b6500;
}

.tiny-btn.danger {
    background: #fff1f1;
    color: var(--danger);
}

.canvas-panel {
    overflow: hidden;
}

.toolbar {
    padding: 20px 20px 14px;
    border-bottom: 1px solid var(--line);
    display: grid;
    gap: 14px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.toolbar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.toolbar-main {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.toolbar-fill {
    flex: 1;
}

.toolbar-title {
    display: grid;
    gap: 6px;
    min-width: 240px;
    flex: 1;
}

.toolbar-title h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
}

.toolbar-copy {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.7;
}

.toolbar-note {
    width: 100%;
    padding: 10px 12px;
    border-radius: 12px;
    background: #f2f8ff;
    color: var(--blue-deep);
    font-size: 12px;
    line-height: 1.7;
    border: 1px solid #d6e5f7;
}

.canvas-wrap {
    padding: 18px;
}

.canvas-stage {
    position: relative;
    min-height: 780px;
    border-radius: 22px;
    border: 1px solid #c9d9ea;
    background:
        linear-gradient(45deg, rgba(42, 112, 201, 0.03) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(42, 112, 201, 0.03) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(42, 112, 201, 0.03) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(42, 112, 201, 0.03) 75%),
        #fdfefe;
    background-size: 28px 28px;
    background-position: 0 0, 0 14px, 14px -14px, -14px 0;
    overflow: auto;
    padding: 18px;
}

.canvas-stage.drag-over {
    border-color: var(--teal);
    box-shadow: inset 0 0 0 2px rgba(13, 140, 140, 0.22);
    background:
        linear-gradient(45deg, rgba(13, 140, 140, 0.06) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(13, 140, 140, 0.06) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(13, 140, 140, 0.06) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(13, 140, 140, 0.06) 75%),
        #f8fffd;
    background-size: 28px 28px;
    background-position: 0 0, 0 14px, 14px -14px, -14px 0;
}

#editorCanvas {
    display: block;
    width: min(100%, 980px);
    min-height: 680px;
    margin: 0 auto;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 12px 28px rgba(24, 50, 74, 0.10);
    user-select: none;
    touch-action: none;
}

#editorCanvas .scene-instance {
    cursor: grab;
}

#editorCanvas .scene-instance[data-locked="1"] {
    cursor: not-allowed;
}

#editorCanvas .scene-instance[data-hidden="1"] {
    display: none;
}

.canvas-empty {
    display: grid;
    place-items: center;
    min-height: 640px;
    color: var(--muted);
    text-align: center;
    padding: 20px;
    line-height: 1.8;
}

.status-line {
    min-height: 22px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.status-line.error {
    color: #b63838;
}

.status-line.success {
    color: #1f7a42;
}

.inspector-grid {
    display: grid;
    gap: 12px;
}

.field-grid {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.checkbox-line {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
}

.color-input {
    min-height: 42px;
    padding: 6px;
}

.layer-item.selected {
    border-color: #8eb4df;
    background: #f5f9ff;
}

.layer-item.active {
    background: #eef6ff;
    box-shadow: inset 0 0 0 1px rgba(42, 112, 201, 0.12);
}

.empty-copy {
    padding: 18px;
    border-radius: 16px;
    border: 1px dashed var(--line-strong);
    background: #fafcff;
    color: var(--muted);
    text-align: center;
    line-height: 1.8;
    font-size: 13px;
}

.hidden-input,
.hidden-panel {
    display: none;
}

#previewDefsCanvas,
#measureCanvas {
    position: absolute;
    left: -99999px;
    top: -99999px;
    width: 10px;
    height: 10px;
    opacity: 0;
    pointer-events: none;
}

.space-12 {
    height: 12px;
}

@media (max-width: 1200px) {
    .workspace {
        grid-template-columns: 1fr;
    }

    .aside-sticky {
        position: static;
    }

    .canvas-stage {
        min-height: 520px;
    }
}

@media (max-width: 860px) {
    .page-shell {
        width: min(100vw - 16px, 1500px);
    }

    .login-card {
        padding: 22px;
    }

    .login-grid {
        grid-template-columns: 1fr;
    }

    .toolbar-row {
        align-items: flex-start;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }

    #editorCanvas {
        width: 100%;
        min-height: 520px;
    }
}