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

body, html {
    height: 100%;
    background-color: #0a0a0a;
    color: #05a0b4;
    font-family: 'PrintChar21', 'Courier New', monospace;
    font-size: 13px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* --- Header --- */
#header {
    flex-shrink: 0;
    padding: 10px 20px 8px;
    border-bottom: 1px solid #1a3a3f;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

#header h1 {
    font-size: 18px;
    letter-spacing: 4px;
    color: #05a0b4;
    text-transform: uppercase;
    flex-shrink: 0;
}

#controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

#rollBtn {
    background: #0a2a2f;
    color: #05a0b4;
    border: 2px solid #05a0b4;
    padding: 8px 28px;
    font-family: inherit;
    font-size: 14px;
    letter-spacing: 3px;
    cursor: pointer;
    text-transform: uppercase;
    transition: background 0.1s, color 0.1s;
    flex-shrink: 0;
}

#rollBtn:hover:not(:disabled) {
    background: #05a0b4;
    color: #0a0a0a;
}

#rollBtn:disabled {
    opacity: 0.4;
    cursor: default;
}

#result-display {
    font-size: 13px;
    letter-spacing: 2px;
    color: #ffdd44;
    min-width: 180px;
}

/* --- Options row --- */
#options {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

#mode-buttons {
    display: flex;
    gap: 4px;
}

.mode-btn {
    background: #0a0a0a;
    color: #2a6a74;
    border: 1px solid #1a3a3f;
    padding: 5px 12px;
    font-family: inherit;
    font-size: 11px;
    letter-spacing: 2px;
    cursor: pointer;
    text-transform: uppercase;
    transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.mode-btn:hover {
    border-color: #05a0b4;
    color: #05a0b4;
}

.mode-btn.active {
    background: #0a2a2f;
    border-color: #05a0b4;
    color: #05e0ff;
}

/* --- Speed slider --- */
#speed-control {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: 2px;
    color: #2a6a74;
}

#speedSlider {
    -webkit-appearance: none;
    appearance: none;
    width: 90px;
    height: 3px;
    background: #1a3a3f;
    outline: none;
    cursor: pointer;
}

#speedSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: #05a0b4;
    cursor: pointer;
}

#speedSlider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: #05a0b4;
    border: none;
    cursor: pointer;
}

#speedLabel {
    color: #05a0b4;
    min-width: 10px;
}

/* --- Wall --- */
#wall {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(clamp(100px, 14vw, 220px), 1fr));
    gap: clamp(2px, 0.4vw, 6px);
    align-content: start;
}

#wall::-webkit-scrollbar { width: 6px; }
#wall::-webkit-scrollbar-track { background: #0a0a0a; }
#wall::-webkit-scrollbar-thumb { background: #1a3a3f; }

/* --- Panels --- */
.panel {
    background: #0f1f22;
    border: 1px solid #1a3a3f;
    color: #2a6a74;
    padding: clamp(3px, 0.5vw, 8px) clamp(4px, 0.7vw, 12px);
    text-align: center;
    font-size: clamp(9px, 0.9vw, 12px);
    line-height: 1.3;
    transition: background 0.05s, color 0.05s, border-color 0.05s;
    user-select: none;
}

.panel.active {
    background: #0a3a44;
    border-color: #05a0b4;
    color: #05e0ff;
    box-shadow: 0 0 8px #05a0b4aa;
}

.panel.winner {
    background: #2a2a00;
    border-color: #ffdd44;
    color: #ffdd44;
    box-shadow: 0 0 14px #ffdd44aa;
}