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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #1a1a2e;
    color: #e0e0e0;
    min-height: 100vh;
    overflow: hidden;
}

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* ====== Toolbar ====== */
.toolbar {
    display: flex;
    align-items: center;
    padding: 6px 16px;
    background: #16213e;
    border-bottom: 1px solid #0f3460;
    gap: 12px;
    flex-shrink: 0;
}

.toolbar h1 {
    font-size: 1.15em;
    color: #e94560;
    white-space: nowrap;
    margin-right: 8px;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
}

.tool-btn {
    background: #0f3460;
    color: #e0e0e0;
    border: 1px solid #1a1a5e;
    padding: 5px 13px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
    white-space: nowrap;
}

.tool-btn:hover {
    background: #1a4a8a;
}

.tool-btn.accent {
    background: #e94560;
    border-color: #e94560;
}

.tool-btn.accent:hover {
    background: #d63851;
}

.toolbar-sep {
    display: inline-block;
    width: 1px;
    height: 22px;
    background: #333;
    margin: 0 3px;
}

/* ====== Main Layout ====== */
.main-layout {
    display: grid;
    grid-template-columns: 260px 1fr 280px;
    flex: 1;
    overflow: hidden;
}

/* ====== Sidebars ====== */
.sidebar {
    background: #16213e;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.left-sidebar {
    border-right: 1px solid #0f3460;
}

.right-sidebar {
    border-left: 1px solid #0f3460;
}

/* ====== Panels ====== */
.panel {
    background: #1a2742;
    border-radius: 8px;
    padding: 12px;
}

.panel h3 {
    font-size: 0.85em;
    color: #8ab4f8;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel h4 {
    font-size: 0.82em;
    color: #aaa;
    margin: 12px 0 6px;
}

.hint {
    color: #555;
    font-size: 12px;
    text-align: center;
    padding: 10px 0;
}

/* ====== Form Elements ====== */
.form-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.form-row label,
.form-group label {
    flex: 1;
    font-size: 11px;
    color: #aaa;
    display: block;
}

.form-row input,
.form-group input,
.form-group select,
.form-group textarea,
.prop-row input,
.prop-row select,
.prop-row textarea {
    width: 100%;
    padding: 5px 7px;
    background: #0d1b36;
    border: 1px solid #2a3a5c;
    border-radius: 4px;
    color: #e0e0e0;
    font-size: 13px;
    margin-top: 3px;
}

.form-group {
    margin-bottom: 10px;
}

.dim-readout {
    font-size: 11px !important;
    color: #666 !important;
    display: flex !important;
    align-items: flex-end !important;
    padding-bottom: 2px;
}

input[type="color"] {
    padding: 2px;
    height: 30px;
    cursor: pointer;
}

textarea {
    resize: vertical;
    min-height: 50px;
    font-family: inherit;
}

/* ====== Background Upload ====== */
.bg-upload-area {
    border: 2px dashed #2a3a5c;
    border-radius: 6px;
    padding: 16px 10px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
    font-size: 12px;
    color: #666;
    margin-bottom: 6px;
}

.bg-upload-area:hover,
.bg-upload-area.drag-over {
    border-color: #8ab4f8;
    color: #8ab4f8;
}

.bg-upload-area.has-bg {
    border-color: #4a7a4a;
    color: #7acb7a;
}

/* ====== Small / Misc Buttons ====== */
.small-btn {
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    background: #2a3a5c;
    color: #ccc;
    transition: background 0.15s;
}

.small-btn:hover {
    background: #3a4a6c;
}

.small-btn.danger {
    background: #5c1a1a;
    color: #ff6b6b;
}

.small-btn.danger:hover {
    background: #7a2222;
}

/* ====== Component List ====== */
.component-list {
    display: flex;
    flex-direction: column;
    gap: 3px;
    max-height: 40vh;
    overflow-y: auto;
}

.comp-item {
    display: flex;
    align-items: center;
    padding: 5px 8px;
    background: #0d1b36;
    border-radius: 4px;
    cursor: pointer;
    gap: 6px;
    font-size: 12px;
    border: 1px solid transparent;
    transition: all 0.12s;
}

.comp-item:hover {
    border-color: #2a3a5c;
}

.comp-item.selected {
    border-color: #8ab4f8;
    background: #1a2f56;
}

.comp-item-icon {
    font-size: 14px;
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.comp-item-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.comp-item-actions {
    display: flex;
    gap: 1px;
}

.comp-item-actions button {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 4px;
    border-radius: 3px;
    line-height: 1;
}

.comp-item-actions button:hover {
    background: #2a3a5c;
    color: #fff;
}

/* ====== Canvas Area ====== */
.canvas-area {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
    overflow: auto;
    padding: 20px;
}

.canvas-scroller {
    display: inline-block;
    position: relative;
    line-height: 0;
}

#cardCanvas {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
    max-height: calc(100vh - 100px);
    max-width: calc(100vw - 600px);
    width: auto;
    height: auto;
}

/* ====== Properties Panel ====== */
#propertiesPanel .hint {
    color: #555;
    font-size: 12px;
    text-align: center;
    padding: 20px 0;
}

.prop-section {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #2a3a5c;
}

.prop-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.prop-section h4 {
    font-size: 10px;
    text-transform: uppercase;
    color: #8ab4f8;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.prop-row {
    display: flex;
    gap: 8px;
    margin-bottom: 6px;
}

.prop-row label {
    flex: 1;
    font-size: 11px;
    color: #aaa;
}

.prop-toggle-row {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.toggle-btn {
    flex: 1;
    padding: 4px 6px;
    background: #0d1b36;
    border: 1px solid #2a3a5c;
    border-radius: 4px;
    color: #888;
    cursor: pointer;
    font-size: 12px;
    text-align: center;
    transition: all 0.12s;
}

.toggle-btn.active {
    background: #1a3a6a;
    color: #8ab4f8;
    border-color: #8ab4f8;
}

.toggle-btn:hover {
    border-color: #4a6a8c;
}

.delete-comp-btn {
    width: 100%;
    padding: 7px;
    background: #3a1515;
    color: #ff6b6b;
    border: 1px solid #5c2020;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    margin-top: 8px;
    transition: background 0.15s;
}

.delete-comp-btn:hover {
    background: #5c1a1a;
}

/* ====== Modal ====== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: #1a2742;
    border-radius: 10px;
    padding: 20px;
    width: 460px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    color: #e0e0e0;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.modal-header h3 {
    font-size: 1.05em;
}

.modal-close {
    background: none;
    border: none;
    color: #888;
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
}

.modal-close:hover {
    color: #fff;
    background: #333;
}

.modal .form-group input {
    margin-bottom: 10px;
}

.primary-btn {
    width: 100%;
    padding: 10px;
    background: #e94560;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: background 0.15s;
}

.primary-btn:hover {
    background: #d63851;
}

/* ====== Template List ====== */
.template-list {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-top: 8px;
}

.template-item {
    display: flex;
    align-items: center;
    padding: 8px 10px;
    background: #0d1b36;
    border-radius: 4px;
    gap: 8px;
}

.template-item-name {
    flex: 1;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.template-item-date {
    font-size: 10px;
    color: #555;
    white-space: nowrap;
}

.template-item button {
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

.template-item .load-btn {
    background: #0f3460;
    color: #8ab4f8;
}

.template-item .load-btn:hover {
    background: #1a4a8a;
}

.template-item .del-btn {
    background: #3a1515;
    color: #ff6b6b;
}

.template-item .del-btn:hover {
    background: #5c1a1a;
}

/* ====== Inline Text Editor ====== */
.inline-text-editor {
    position: absolute;
    z-index: 100;
    padding: 4px 6px;
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    border: 2px solid #4a90d9;
    border-radius: 4px;
    font-family: inherit;
    resize: none;
    outline: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    min-width: 60px;
    min-height: 30px;
}

/* ====== Responsive ====== */
@media (max-width: 1100px) {
    .main-layout {
        grid-template-columns: 220px 1fr 240px;
    }

    #cardCanvas {
        max-width: calc(100vw - 520px);
    }
}

@media (max-width: 800px) {
    .main-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }

    .sidebar {
        max-height: 200px;
    }

    #cardCanvas {
        max-width: 90vw;
    }
}