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

:root {
    --bg: #0a0a18;
    --bg2: #101020;
    --text: #e0e0e0;
    --text2: #999;
    --accent: #88bbff;
    --accent2: #6699dd;
    --border: #2a2a3a;
    --input-bg: #0c0c1a;
    --input-border: #3a3a4a;
    --section-bg: #161628;
    --btn-bg: #1e2844;
    --btn-hover: #2a3a5c;
    --danger: #c0392b;
    --success: #27ae60;
}

body.light {
    --bg: #f0f0f0;
    --bg2: #e8e8e8;
    --text: #222;
    --text2: #666;
    --accent: #2266aa;
    --accent2: #1a5599;
    --border: #ccc;
    --input-bg: #fff;
    --input-border: #bbb;
    --section-bg: #e0e0e0;
    --btn-bg: #d0d0d0;
    --btn-hover: #bbb;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
#sidebar {
    width: 300px;
    min-width: 300px;
    background: var(--bg2);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-logo-link { display: block; margin-bottom: 8px; }
.sidebar-logo { height: 20px; width: auto; }

#sidebar h1 {
    font-size: 18px;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text2);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.section {
    background: var(--section-bg);
    border-radius: 6px;
    padding: 12px;
}

.section h3 {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text2);
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.field {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.field label {
    font-size: 13px;
    min-width: 80px;
    color: var(--text);
}

.field input[type="number"],
.field input[type="text"] {
    flex: 1;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
    width: 0;
}

.field select {
    flex: 1;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.field .unit {
    font-size: 12px;
    color: var(--text2);
    min-width: 24px;
}

.field input[type="checkbox"] {
    accent-color: var(--accent);
}

.info-note {
    font-size: 11px;
    color: var(--text2);
    margin-top: 4px;
    line-height: 1.4;
}

/* Unit toggle */
.unit-toggle {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.unit-toggle button {
    flex: 1;
    padding: 4px 12px;
    border: none;
    background: var(--btn-bg);
    color: var(--text);
    cursor: pointer;
    font-size: 12px;
}

.unit-toggle button.active {
    background: var(--accent);
    color: #000;
    font-weight: bold;
}

/* Drop zone */
#dropZone {
    border: 2px dashed var(--border);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
    font-size: 13px;
    color: var(--text2);
}

#dropZone.dragover {
    border-color: var(--accent);
    color: var(--accent);
}

#dropZone.loaded {
    border-color: var(--success);
    border-style: solid;
}

#imageInfo {
    font-size: 12px;
    color: var(--text2);
    margin-top: 4px;
}

/* Buttons */
button.primary {
    width: 100%;
    padding: 10px;
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

button.primary:hover {
    background: var(--accent2);
}

button.primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.export-row {
    display: flex;
    gap: 6px;
}

.export-row button {
    flex: 1;
    padding: 8px;
    background: var(--btn-bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.export-row button:hover {
    background: var(--btn-hover);
}

.export-row button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Stats */
.stats {
    font-size: 12px;
    color: var(--text2);
    line-height: 1.6;
}

.stats span {
    color: var(--text);
    font-weight: bold;
}

/* Canvas area */
#canvasContainer {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#canvasContainer canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Loading overlay */
#loadingOverlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10;
    font-size: 18px;
    color: var(--accent);
}

#loadingOverlay.visible {
    display: flex;
}

/* Status bar */
#statusBar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.5);
    font-size: 12px;
    color: var(--text2);
}