:root {
    --bg: #222223;
    --panel: #1d1e21;
    --panel-border: #1a1c21;
    --raised: #1c1c1e;

    --text: #ebe5d5;
    --text-dim: #b0b3be;

    --accent: #39ff61;
    --accent-dim: #1f8a26;
    --danger: #ce4c4c;
    --danger-dim: #9c3e3e;

    --font-mono: "Lora", "Courier New", monospace;
    --font-sans: "Plus Jakarta Sans", system-ui, sans-serif;

    --radius: 10px;
    --shadow: 0 12px 24px rgba(7, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 50% 0%, rgba(107, 57, 255, 0.05), transparent 100%),
        var(--bg);  
    color: var(--text);
    font-family: var(--font-sans);
}


.toolbar {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
    padding: 16px 28px;
    background: var(--panel);
    border-bottom: 1px solid var(--panel-border);
}

.toolbar-brand {
    align-items: center;
    gap: 10px;
    margin-right: auto;
}

.toolbar-brand h1 {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--text);
}

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

.field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.field input {
    width: 4.5rem;
    padding: 6px 8px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--raised);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
}

.field input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.btn {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--accent);
    color: #070c09;
    box-shadow: 0 0 0 rgba(61, 225, 127, 0);
}

.btn-primary:hover {
    box-shadow: 0 0 16px rgba(57, 255, 136, 0.35);
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger-dim);
}

.btn-danger:hover {
    background: rgba(255, 90, 90, 0.1);
}

.btn-outline {
    background: transparent;
    color: var(--amber);
    border-color: var(--amber);
}

.btn-outline:hover {
    background: rgba(255, 176, 32, 0.12);
}

.btn-ghost {
    background: var(--raised);
    color: var(--text);
    border-color: var(--panel-border);
    text-align: left;
}

.btn-ghost:hover {
    border-color: var(--accent-dim);
    color: var(--accent);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    background-color: var(--raised);
    background-image: url("Raku.svg");
    background-size: 65%;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
}

.btn-icon:hover {
    border-color: var(--amber);
}

.btn-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn-row {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.layout {
    display: grid;
    grid-template-columns: 450px 1fr 450px; 
    gap: 24px;
    padding: 28px;
    align-items: start;
}

.stage {
    display: flex;
    justify-content: center;
}

.panel {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.panel-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius);
    padding: 16px 18px;
}

.panel-card h2 {
    margin: 0 0 12px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

#grid {
    position: relative;
    width: 100%;
    max-width: 900px;
    aspect-ratio: var(--cols, 8) / var(--rows, 8);

    display: grid;
    grid-template-columns: repeat(var(--cols, 8), 1fr);
    grid-template-rows: repeat(var(--rows, 8), 1fr);
    gap: 0;

    background-color: #000;
    border: 10px solid var(--panel);
    border-radius: 14px;
    outline: 1px solid var(--panel-border);
    box-shadow: var(--shadow);
}

#grid img {
    width: 100% !important;
    height: 100% !important;
    min-width: 0 !important;
    min-height: 0 !important;
    display: block !important;
    object-fit: fill !important;
    box-sizing: border-box;
}

#grid img.Raku {
    background-color: #fff;
}

.border {
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.deadCell {
    background-color: #1a1c22;
}

.liveCell {
    background-color: var(--accent);
    box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.3);
}

#codeInput {
    width: 100%;
    min-height: 120px;
    padding: 10px 12px;
    resize: vertical;
    background-color: #0c0d10;
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    text-shadow: 0 0 6px rgba(57, 255, 136, 0.5);
}

#codeInput::placeholder {
    color: var(--accent-dim);
    text-shadow: none;
}

#codeInput:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

#tutorial p {
    margin: 0 0 8px;
    font-size: 0.85rem;
    color: var(--text-dim);
}

#tutorial code {
    font-family: var(--font-mono);
    color: var(--amber);
    background: var(--raised);
    padding: 2px 6px;
    border-radius: 4px;
}