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

body {
    background: #0a0a14;
    color: #e0e0e0;
    font-family: 'Share Tech Mono', monospace;
    min-height: 100vh;
    overflow-x: hidden;
}

#app {
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px;
}

.header {
    text-align: center;
    padding: 20px;
    background: linear-gradient(180deg, #1a1a3e 0%, #0d0d1a 100%);
    border: 2px solid #333;
    border-radius: 8px;
    margin-bottom: 10px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, #ff6600, transparent);
}

.header h1 {
    font-family: 'VT323', monospace;
    font-size: 3em;
    color: #ff6600;
    text-shadow: 0 0 20px rgba(255, 102, 0, 0.5), 0 0 40px rgba(255, 102, 0, 0.2);
    letter-spacing: 8px;
}

.header .subtitle {
    color: #888;
    font-size: 0.9em;
    margin-top: 5px;
}

.front-panel {
    background: linear-gradient(180deg, #2a2a3a 0%, #1a1a2a 100%);
    border: 2px solid #444;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
}

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

.led-group-label {
    color: #999;
    font-size: 0.7em;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.led-row {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    align-items: center;
}

.led {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #331100;
    border: 1px solid #222;
    transition: all 0.1s;
}

.led.active {
    background: #ff4400;
    box-shadow: 0 0 6px #ff4400, 0 0 12px rgba(255, 68, 0, 0.5);
}

.led.amber.active {
    background: #ff8800;
    box-shadow: 0 0 6px #ff8800, 0 0 12px rgba(255, 136, 0, 0.5);
}

.led-bit-label {
    font-size: 0.55em;
    color: #666;
    text-align: center;
    width: 14px;
}

.status-leds {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.status-led-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.status-led-item .label {
    font-size: 0.55em;
    color: #888;
}

.controls-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.ctrl-btn {
    padding: 8px 14px;
    background: linear-gradient(180deg, #3a3a4a, #2a2a3a);
    border: 1px solid #555;
    border-radius: 4px;
    color: #ddd;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75em;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.15s;
}

.ctrl-btn:hover {
    background: linear-gradient(180deg, #4a4a5a, #3a3a4a);
    border-color: #ff6600;
}

.ctrl-btn:active {
    transform: translateY(1px);
}

.ctrl-btn.run {
    background: linear-gradient(180deg, #1a4a1a, #0a3a0a);
    border-color: #2a8a2a;
}

.ctrl-btn.run:hover {
    border-color: #4afa4a;
}

.ctrl-btn.stop {
    background: linear-gradient(180deg, #4a1a1a, #3a0a0a);
    border-color: #8a2a2a;
}

.ctrl-btn.stop:hover {
    border-color: #fa4a4a;
}

.ctrl-btn.active-run {
    background: linear-gradient(180deg, #2a6a2a, #1a5a1a);
    border-color: #4afa4a;
    box-shadow: 0 0 8px rgba(74, 250, 74, 0.3);
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

@media (max-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

.panel {
    background: #111122;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 12px;
    overflow: hidden;
}

.panel-title {
    color: #ff6600;
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid #2a2a3a;
}

.registers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
}

.reg-item {
    background: #0a0a1a;
    border: 1px solid #2a2a3a;
    border-radius: 4px;
    padding: 6px 8px;
}

.reg-name {
    color: #ff8800;
    font-size: 0.7em;
    font-weight: bold;
}

.reg-value {
    color: #00ff88;
    font-size: 1em;
    margin-top: 2px;
}

.reg-extra {
    color: #666;
    font-size: 0.65em;
    margin-top: 2px;
}

.flags-row {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.flag-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 3px 6px;
    border-radius: 3px;
    background: #0a0a1a;
    border: 1px solid #2a2a3a;
}

.flag-item.set {
    border-color: #00cc66;
    background: #0a1a0a;
}

.flag-item .fname {
    font-size: 0.65em;
    color: #888;
}

.flag-item.set .fname {
    color: #00ff88;
}

.flag-item .fval {
    font-size: 0.8em;
    color: #444;
}

.flag-item.set .fval {
    color: #00ff88;
}

.memory-viewer {
    font-size: 0.7em;
    overflow-y: auto;
    max-height: 300px;
    background: #050510;
    border: 1px solid #222;
    border-radius: 4px;
    padding: 4px;
}

.memory-viewer pre {
    margin: 0;
    line-height: 1.4;
    white-space: pre;
}

.mem-line {
    display: block;
}

.mem-addr {
    color: #666;
}

.mem-byte {
    color: #aaa;
}

.mem-byte.highlight {
    color: #ff6600;
    background: #2a1a00;
    font-weight: bold;
}

.mem-ascii {
    color: #558855;
}

.disasm-view {
    font-size: 0.72em;
    overflow-y: auto;
    max-height: 280px;
    background: #050510;
    border: 1px solid #222;
    border-radius: 4px;
    padding: 4px;
}

.disasm-line {
    display: block;
    padding: 1px 4px;
    white-space: pre;
}

.disasm-line.current {
    background: #2a1a00;
    color: #ff8800;
    border-left: 3px solid #ff6600;
}

.disasm-addr {
    color: #666;
}

.disasm-bytes {
    color: #558;
}

.disasm-mnemonic {
    color: #aaa;
}

.console-output {
    background: #000800;
    border: 1px solid #1a3a1a;
    border-radius: 4px;
    padding: 8px;
    font-size: 0.8em;
    color: #00ff44;
    min-height: 100px;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'VT323', monospace;
}

.drop-zone {
    border: 2px dashed #444;
    border-radius: 6px;
    padding: 20px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
    background: #0a0a14;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: #ff6600;
    background: #1a0a00;
}

.drop-zone-text {
    color: #888;
    font-size: 0.8em;
}

.drop-zone-icon {
    font-size: 2em;
    color: #555;
    margin-bottom: 8px;
}

.file-info {
    margin-top: 8px;
    color: #00cc66;
    font-size: 0.75em;
}

.speed-control {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.speed-control input[type="range"] {
    flex: 1;
    accent-color: #ff6600;
}

.speed-label {
    color: #888;
    font-size: 0.7em;
    min-width: 60px;
}

.counter-display {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    font-size: 0.7em;
    color: #888;
}

.counter-display span {
    color: #00cc88;
}

.input-field {
    background: #0a0a1a;
    border: 1px solid #333;
    border-radius: 3px;
    color: #ddd;
    padding: 4px 8px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8em;
    width: 80px;
}

.input-field:focus {
    outline: none;
    border-color: #ff6600;
}

.sample-select {
    background: #1a1a2a;
    border: 1px solid #333;
    border-radius: 3px;
    color: #ddd;
    padding: 4px 8px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75em;
    cursor: pointer;
}

.sample-select:focus {
    outline: none;
    border-color: #ff6600;
}

.footer {
    text-align: center;
    padding: 15px;
    color: #555;
    font-size: 0.75em;
    margin-top: 15px;
    border-top: 1px solid #222;
}

.footer a {
    color: #ff6600;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.console-input-row {
    display: flex;
    gap: 4px;
    margin-top: 4px;
}

.console-input {
    flex: 1;
    background: #001a00;
    border: 1px solid #1a3a1a;
    border-radius: 3px;
    color: #00ff44;
    padding: 4px 8px;
    font-family: 'VT323', monospace;
    font-size: 0.9em;
}

.console-input:focus {
    outline: none;
    border-color: #00ff88;
}

.breakpoint-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    font-size: 0.75em;
    color: #888;
}

.history-log {
    font-size: 0.65em;
    max-height: 150px;
    overflow-y: auto;
    background: #050510;
    border: 1px solid #222;
    border-radius: 4px;
    padding: 4px;
    color: #777;
}

.history-line {
    white-space: pre;
    line-height: 1.3;
}

.nav-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}