:root {
    --bg-color: #0f1115;
    --panel-bg: #171a21;
    --text-color: #e8ecf1;
    --muted-text: #9aa4b2;
    --accent: #5b8cff;
    --accent-2: #7bd389;
    --border: #242a34;
    --shadow: 0 20px 60px rgba(0,0,0,0.45);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
    /* Removed flex properties from body to avoid conflicts */
}

#app {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.header {
    height: 64px;
    background-color: var(--panel-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 6px 24px rgba(0,0,0,0.35);
    z-index: 10;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #1f2430;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s ease, border 0.2s ease;
}

.header-link:hover {
    background: #2b3443;
    border-color: #2f3948;
}

.logo {
    height: 36px;
    width: 36px;
    object-fit: contain;
    border-radius: 8px;
    background: #11151c;
    padding: 6px;
    border: 1px solid var(--border);
}

h1 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.4px;
}

#canvas-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    background-color: #2a2f3a;
    cursor: grab;
    touch-action: none; /* Important for custom touch handling */
}

#canvas-container:active {
    cursor: grabbing;
}

canvas {
    image-rendering: pixelated; /* Sharp pixels */
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: top left;
    border-radius: 8px;
    box-shadow: var(--shadow);
    background-color: white;
}

#grid-canvas {
    pointer-events: none;
    background: transparent;
    box-shadow: none;
}

#ui-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    z-index: 20;
}

#ui-overlay.hidden {
    display: none;
}

.panel {
    background-color: var(--panel-bg);
    padding: 18px 20px;
    border-radius: 14px;
    width: 100%;
    max-width: 500px;
    pointer-events: auto;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: relative;
}

.panel-glass {
    backdrop-filter: blur(8px);
    background: linear-gradient(180deg, rgba(23,26,33,0.92), rgba(23,26,33,0.98));
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.panel-title {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

@media (min-width: 600px) {
    .panel {
        border-radius: 12px;
        margin-bottom: 20px;
    }
}

.close-btn {
    background: #1f2430;
    border: 1px solid var(--border);
    color: var(--muted-text);
    width: 28px;
    height: 28px;
    border-radius: 8px;
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.pixel-info {
    display: grid;
    gap: 10px;
}

.info-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 10px;
    background: #141822;
    border: 1px solid var(--border);
}

.info-label {
    font-size: 0.8rem;
    color: var(--muted-text);
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.info-value {
    font-size: 0.9rem;
    color: var(--text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.info-value.link {
    color: var(--accent);
    text-decoration: none;
}

.info-value.link:hover {
    text-decoration: underline;
}

code {
    font-family: monospace;
    color: var(--accent);
    font-size: 1.1rem;
}

button {
    background: #232a36;
    color: var(--text-color);
    border: none;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid var(--border);
    transition: background 0.2s ease, border 0.2s ease;
}

button:hover {
    background: #2b3443;
    border-color: #2f3948;
}

.btn.primary {
    background-color: var(--accent);
    display: block;
    text-align: center;
    text-decoration: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: bold;
    margin-top: 10px;
    color: white;
}

#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2rem;
    pointer-events: none;
    color: var(--muted-text);
}