/* ═══════════════════════════════════════════
   BAM LOGO FACTORY — Dark Neon UI
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --bg: #0c0c0e;
    --surface: #141418;
    --surface2: #1a1a20;
    --border: #2a2a32;
    --text: #c8c8d0;
    --text-dim: #6a6a78;
    --accent: #39ff14;
    --accent-dim: rgba(57, 255, 20, 0.15);
    --accent-glow: rgba(57, 255, 20, 0.3);
    --panel-w: 320px;
    --header-h: 48px;
    --export-h: 56px;
}

html,
body {
    height: 100%;
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ═══ HEADER ═══ */
#app-header {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

.header-back {
    font-size: 11px;
    color: var(--text-dim);
    text-decoration: none;
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: all 0.2s;
    letter-spacing: 1px;
}

.header-back:hover {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-dim);
}

.header-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    text-shadow: 0 0 12px var(--accent-glow);
}

.btn-ghost {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 5px 14px;
    border-radius: 4px;
    font-size: 11px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px var(--accent-dim);
}

/* ═══ MAIN LAYOUT ═══ */
#app-layout {
    display: flex;
    height: calc(100vh - var(--header-h) - var(--export-h));
}

/* ═══ CONTROLS PANEL ═══ */
#controls-panel {
    width: var(--panel-w);
    min-width: var(--panel-w);
    background: var(--surface);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

#controls-panel::-webkit-scrollbar {
    width: 5px;
}

#controls-panel::-webkit-scrollbar-track {
    background: transparent;
}

#controls-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Control groups */
.ctrl-group {
    border-bottom: 1px solid var(--border);
}

.ctrl-group summary {
    padding: 10px 16px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    cursor: pointer;
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s;
}

.ctrl-group summary:hover {
    background: var(--accent-dim);
}

.ctrl-group summary::before {
    content: '▸';
    font-size: 9px;
    transition: transform 0.2s;
}

.ctrl-group[open] summary::before {
    transform: rotate(90deg);
}

.ctrl-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 16px 4px 24px;
    font-size: 11px;
    color: var(--text-dim);
    white-space: nowrap;
}

.ctrl-group label:last-child {
    padding-bottom: 10px;
}

.ctrl-group input[type="range"] {
    flex: 1;
    min-width: 0;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.ctrl-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent-glow);
    cursor: grab;
}

.ctrl-group input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    box-shadow: 0 0 6px var(--accent-glow);
    cursor: grab;
}

.ctrl-group input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 20px;
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    background: none;
    padding: 0;
}

.ctrl-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 1px;
}

.ctrl-group input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 2px;
}

.ctrl-group input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    transition: all 0.15s;
}

.ctrl-group input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.ctrl-group input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: -1px;
    left: 2px;
    font-size: 10px;
    color: #000;
    font-weight: 700;
}

.val {
    font-size: 10px;
    color: var(--text-dim);
    min-width: 32px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ═══ CANVAS AREA ═══ */
#canvas-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse at center, rgba(57, 255, 20, 0.03) 0%, transparent 60%),
        repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255, 255, 255, 0.015) 39px, rgba(255, 255, 255, 0.015) 40px),
        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255, 255, 255, 0.015) 39px, rgba(255, 255, 255, 0.015) 40px),
        var(--bg);
    overflow: hidden;
    position: relative;
}

#canvas-wrapper {
    max-width: 90%;
    max-height: 90%;
}

#logo-svg {
    width: 100%;
    height: auto;
    max-height: calc(100vh - var(--header-h) - var(--export-h) - 40px);
    display: block;
    filter: drop-shadow(0 0 40px rgba(57, 255, 20, 0.08));
}

/* Checkerboard for transparency preview */
#canvas-area.bg-transparent #canvas-wrapper {
    background:
        linear-gradient(45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(-45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #1a1a1a 75%),
        linear-gradient(-45deg, transparent 75%, #1a1a1a 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0;
    background-color: #222;
    border-radius: 4px;
    padding: 20px;
}

#canvas-area.bg-white #canvas-wrapper {
    background: #ffffff;
    border-radius: 4px;
    padding: 20px;
}

#canvas-area.bg-black #canvas-wrapper {
    background: #000000;
    border-radius: 4px;
    padding: 20px;
}

/* ═══ EXPORT BAR ═══ */
#export-bar {
    height: var(--export-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.export-bg-select {
    display: flex;
    align-items: center;
    gap: 8px;
}

.export-label {
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-right: 4px;
}

.bg-btn {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 5px 14px;
    border-radius: 4px;
    font-size: 11px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.bg-btn:hover {
    border-color: var(--text-dim);
}

.bg-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
    box-shadow: 0 0 8px var(--accent-dim);
}

.export-actions {
    display: flex;
    gap: 10px;
}

.btn-export {
    background: linear-gradient(135deg, var(--accent) 0%, #28cc10 100%);
    color: #000;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 0 12px var(--accent-dim);
}

.btn-export:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-export-alt {
    background: var(--surface2);
    color: var(--accent);
    border: 1px solid var(--accent);
    box-shadow: none;
}

.btn-export-alt:hover {
    background: var(--accent-dim);
}

.btn-export-print {
    background: #2a1a00;
    color: #ffaa00;
    border: 1px solid #ffaa00;
    box-shadow: none;
}

.btn-export-print:hover {
    background: #3d2800;
}