:root {
    --bg: #1a1a2e;
    --bg2: #16213e;
    --bg3: #0f3460;
    --accent: #e94560;
    --accent2: #ff6b6b;
    --text: #eee;
    --text2: #aab;
    --success: #4ecdc4;
    --warning: #f9a825;
    --border: #2a3a5e;
    --radius: 6px;
}

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

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

/* ==========================================
   Header
   ========================================== */

header {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    z-index: 10;
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-right { display: flex; align-items: center; gap: 10px; }

header h1 { font-size: 1.15rem; font-weight: 600; white-space: nowrap; }
header h1 span { color: var(--accent); }

.badge {
    background: var(--accent);
    color: white;
    font-size: 0.55rem;
    padding: 2px 7px;
    border-radius: 10px;
    text-transform: uppercase;
    font-weight: 700;
}

.user-info { font-size: 0.8rem; color: var(--text2); }

.connection-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text2);
    margin-left: 8px;
    padding-left: 12px;
    border-left: 1px solid var(--border);
}

/* ==========================================
   Buttons
   ========================================== */

.btn {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    background: var(--bg3);
    color: var(--text);
}

.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: white; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent2); }
.btn-secondary { background: var(--bg3); }
.btn-sm { padding: 4px 10px; font-size: 0.75rem; }
.btn-accent { color: var(--accent); border-color: var(--accent); background: transparent; }
.btn-accent:hover { background: rgba(233, 69, 96, 0.15); }

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

/* ==========================================
   Forms
   ========================================== */

input, select, textarea {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 8px;
    font-size: 0.8rem;
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}

label {
    font-size: 0.75rem;
    color: var(--text2);
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

.form-group { margin-bottom: 12px; }

.hidden { display: none !important; }

.text-muted { color: var(--text2); font-size: 0.8rem; margin-bottom: 12px; }

/* ==========================================
   Alerts
   ========================================== */

.alert {
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

/* ==========================================
   Status dot
   ========================================== */

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
    flex-shrink: 0;
}

.status-dot.connected { background: #22c55e; }

/* ==========================================
   Editor layout
   ========================================== */

.editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.toolbar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 4px 8px;
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 4px;
}

.toolbar-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 5px 8px;
    background: transparent;
    color: var(--text2);
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
}

.toolbar-btn:hover {
    background: var(--bg3);
    color: var(--text);
    border-color: var(--border);
}

.toolbar-btn svg { flex-shrink: 0; }

.toolbar-btn.btn-accent { color: var(--accent); font-weight: 600; }
.toolbar-btn.btn-accent:hover { background: rgba(233, 69, 96, 0.15); border-color: var(--accent); }
.toolbar-btn.btn-danger-text { color: #c0392b; }
.toolbar-btn.btn-danger-text:hover { background: rgba(192, 57, 43, 0.15); border-color: #c0392b; }

/* Toolbar dropdowns */
.toolbar-dropdown { position: relative; }
.toolbar-dropdown-menu {
    display: none; position: absolute; top: 100%; left: 0;
    padding-top: 6px; z-index: 50; min-width: 140px;
}
.toolbar-dropdown-menu-inner {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 4px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.toolbar-dropdown:hover .toolbar-dropdown-menu,
.toolbar-dropdown.open .toolbar-dropdown-menu { display: block; }
.toolbar-dropdown-menu-inner button {
    display: block; width: 100%; padding: 6px 14px;
    background: none; border: none; color: var(--text2);
    font-size: 0.78rem; text-align: left; cursor: pointer;
}
.toolbar-dropdown-menu-inner button:hover { background: var(--bg3); color: var(--text); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* Color palette bar */
.color-palette {
    display: flex; align-items: center; gap: 4px;
    padding: 3px 8px; background: var(--bg2);
    border-bottom: 1px solid var(--border); flex-shrink: 0; min-height: 24px;
}
.color-palette-label { font-size: 0.68rem; color: var(--text2); margin-right: 4px; white-space: nowrap; }
.color-swatch {
    width: 20px; height: 20px; border-radius: 3px;
    border: 2px solid transparent; cursor: pointer;
    transition: all 0.12s; position: relative;
}
.color-swatch:hover { transform: scale(1.15); border-color: rgba(255,255,255,0.5); }
.color-swatch.active { border-color: #fff; box-shadow: 0 0 0 1px rgba(255,255,255,0.3); }
.color-swatch .swatch-count {
    position: absolute; bottom: -1px; right: -1px;
    background: var(--bg); color: var(--text2);
    font-size: 0.55rem; font-weight: 700; padding: 0 3px;
    border-radius: 3px; line-height: 1.4; pointer-events: none;
}

.editor-main { flex: 1; display: flex; overflow: hidden; }

.canvas-wrap { flex: 1; position: relative; overflow: hidden; }
.canvas-wrap canvas { display: block; width: 100%; height: 100%; }

/* Drop overlay */
.drop-overlay {
    position: absolute; inset: 0;
    background: rgba(233, 69, 96, 0.15); border: 2px dashed var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 600; color: var(--accent);
    pointer-events: none; z-index: 5;
}

/* ==========================================
   Shape toolbar
   ========================================== */

.shape-toolbar {
    background: var(--bg2); border-bottom: 1px solid var(--border);
    padding: 4px 12px; display: flex; align-items: center;
    gap: 4px; flex-shrink: 0; position: relative;
}

.shape-btn {
    width: 36px; height: 36px; padding: 6px;
    background: transparent; border: 1px solid transparent;
    border-radius: var(--radius); color: var(--text2);
    cursor: pointer; display: flex; align-items: center;
    justify-content: center; transition: all 0.15s;
}
.shape-btn:hover { background: var(--bg3); color: var(--text); border-color: var(--border); }
.shape-btn:active, .shape-btn.active { background: rgba(233, 69, 96, 0.15); border-color: var(--accent); color: var(--accent); }
.shape-btn svg { width: 20px; height: 20px; }

.shape-toolbar-divider { width: 1px; height: 24px; background: var(--border); margin: 0 4px; }

/* Text popover */
.text-popover {
    position: fixed; background: var(--bg2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 10px; z-index: 20;
    display: flex; flex-direction: column; gap: 8px;
    min-width: 220px; box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.text-popover input[type="text"] { width: 100%; }
.text-popover-row { display: flex; align-items: center; gap: 6px; }
.text-popover-row label { display: flex; align-items: center; gap: 4px; font-size: 0.75rem; color: var(--text2); font-weight: 600; white-space: nowrap; }
.text-popover-row label input { width: 50px; }
.text-popover-row select { flex: 1; }

/* ==========================================
   Sidebar
   ========================================== */

.sidebar {
    width: 260px; background: var(--bg2);
    border-left: 1px solid var(--border);
    overflow-y: auto; flex-shrink: 0;
    display: flex; flex-direction: column;
}

.panel { border-bottom: 1px solid var(--border); padding: 12px; }

.panel h3 {
    font-size: 0.72rem; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--text2);
    font-weight: 600; margin-bottom: 10px;
}

/* Collapsible panels */
.collapsible .panel-toggle {
    cursor: pointer; user-select: none;
    display: flex; align-items: center;
    justify-content: space-between; margin-bottom: 0;
}
.collapsible .panel-body { margin-top: 10px; }
.collapsible.collapsed .panel-body { display: none; }
.collapsible.collapsed .panel-toggle { margin-bottom: 0; }
.caret { font-size: 0.6rem; }

/* ==========================================
   Position panel
   ========================================== */

.pos-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pos-grid label { display: flex; align-items: center; gap: 4px; font-size: 0.75rem; color: var(--text2); font-weight: 600; }
.pos-grid input { flex: 1; width: 100%; min-width: 0; }
.pos-actions { display: flex; gap: 6px; margin-top: 8px; }

/* ==========================================
   Layer panel
   ========================================== */

.layer-empty { color: var(--text2); font-size: 0.8rem; text-align: center; padding: 12px 0; }

.layer-row {
    padding: 8px; border: 1px solid var(--border);
    border-radius: var(--radius); margin-bottom: 6px; background: var(--bg);
}
.layer-row.layer-disabled { opacity: 0.45; }

.layer-toggle { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 0.82rem; font-weight: 500; }
.layer-toggle input[type="checkbox"] { accent-color: var(--accent); width: 14px; height: 14px; }

.layer-swatch { width: 14px; height: 14px; border-radius: 3px; border: 1px solid rgba(255,255,255,0.2); flex-shrink: 0; }

.layer-header { display: flex; align-items: center; justify-content: space-between; gap: 6px; }

.layer-mode { font-size: 0.7rem; padding: 2px 4px; min-width: 60px; flex-shrink: 0; }
.layer-mode option:disabled { color: #666; }
.layer-name { flex: 1; }

.layer-material { display: flex; gap: 4px; margin-top: 4px; }
.layer-material select { flex: 1; font-size: 0.7rem; padding: 2px 4px; min-width: 0; }

.layer-params {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 4px; margin-top: 6px;
}
.layer-params label { font-size: 0.65rem; color: var(--text2); display: flex; flex-direction: column; gap: 2px; }
.layer-params input { width: 100%; padding: 3px 4px; font-size: 0.75rem; }

/* ==========================================
   Machine Info
   ========================================== */

.info-grid-sm { display: flex; flex-direction: column; gap: 6px; }
.info-row { display: flex; justify-content: space-between; font-size: 0.78rem; }
.info-row span:first-child { color: var(--text2); }
.info-row span:last-child { color: var(--text); font-weight: 500; }
.mono { font-family: 'SF Mono', 'Menlo', monospace; }

/* ==========================================
   Log
   ========================================== */

.log-container {
    max-height: 160px; overflow-y: auto;
    font-family: 'SF Mono', 'Menlo', monospace;
    font-size: 0.7rem; line-height: 1.6;
    background: var(--bg); border-radius: var(--radius);
    padding: 6px 8px;
}
.log-entry { color: var(--text2); }
.log-time { color: var(--text2); opacity: 0.5; margin-right: 6px; }
.log-success { color: var(--success); }
.log-error { color: #ef4444; }
.log-warning { color: var(--warning); }

/* ==========================================
   Progress bar
   ========================================== */

.progress-bar {
    height: 22px; background: var(--bg2);
    border-bottom: 1px solid var(--border);
    position: relative; flex-shrink: 0;
}
.progress-fill {
    height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent2));
    width: 0; transition: width 0.3s;
}
.progress-label {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 600; color: var(--text);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* ==========================================
   Modals
   ========================================== */

.modal {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0,0,0,0.6); display: flex;
    align-items: center; justify-content: center;
}
.modal-content {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 10px; width: 90%; max-height: 80vh;
    overflow-y: auto; box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.modal-sm { max-width: 420px; }
.modal-md { max-width: 560px; }
.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1rem; text-transform: none; letter-spacing: 0; }
.modal-close {
    background: none; border: none; color: var(--text2);
    font-size: 1.4rem; cursor: pointer; padding: 0 4px;
}
.modal-close:hover { color: var(--text); }
.modal-body { padding: 16px 20px; }
.modal-footer {
    padding: 12px 20px; border-top: 1px solid var(--border);
    display: flex; justify-content: flex-end; gap: 8px;
}

/* ==========================================
   Context Menu
   ========================================== */

.context-menu {
    position: fixed; z-index: 200;
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 4px 0;
    min-width: 180px; box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.context-menu-item {
    display: flex; justify-content: space-between; align-items: center;
    width: 100%; padding: 6px 12px;
    background: none; border: none; color: var(--text);
    font-size: 0.8rem; cursor: pointer; text-align: left;
}
.context-menu-item:hover { background: var(--bg3); }
.context-menu-shortcut { color: var(--text2); font-size: 0.7rem; margin-left: 16px; }
.context-menu-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ==========================================
   Feedback
   ========================================== */

.feedback-btn {
    background: none; border: none; color: var(--text2);
    cursor: pointer; padding: 4px; border-radius: var(--radius);
    display: flex; align-items: center;
}
.feedback-btn:hover { color: var(--text); background: var(--bg3); }

.feedback-type-selector { display: flex; gap: 8px; margin-bottom: 8px; }
.feedback-type-option { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.feedback-type-option input { accent-color: var(--accent); }
.feedback-type-label { font-size: 0.8rem; font-weight: 500; }
.feedback-note {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.75rem; color: var(--text2);
    padding: 8px; background: var(--bg);
    border-radius: var(--radius); margin-top: 8px;
}
.char-count { font-size: 0.7rem; color: var(--text2); text-align: right; margin-top: 2px; }