:root {
    --green: #33ff33;
    --green-dim: #1a8c1a;
    --green-dark: #0d4d0d;
    --amber: #ffaa00;
    --amber-dim: #8c5e00;
    --red: #ff3333;
    --bg: #0a0a0a;
    --bg-panel: #111111;
    --bg-panel-inner: #0d0d0d;
    --border: #1a5c1a;
    --text: #33ff33;
    --text-dim: #1a8c1a;
}

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

html, body {
    width: 100%;
    min-height: 100vh;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'IBM Plex Mono', 'Courier New', monospace;
    font-size: 12px;
    overflow-x: hidden;
}

#root {
    min-height: 100vh;
}

.amber-mode {
    --green: #ffaa00;
    --green-dim: #8c5e00;
    --green-dark: #4d3300;
    --border: #5c3d00;
    --text: #ffaa00;
    --text-dim: #8c5e00;
}

.white-mode {
    --green: #cccccc;
    --green-dim: #666666;
    --green-dark: #333333;
    --border: #444444;
    --text: #cccccc;
    --text-dim: #666666;
}

.glow-text {
    text-shadow: 0 0 10px var(--green), 0 0 20px var(--green), 0 0 40px var(--green);
}

.panel {
    background: var(--bg-panel);
    border: 2px solid var(--border);
    padding: 8px;
    margin-bottom: 8px;
    position: relative;
}

.panel-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.register-val {
    background: var(--bg-panel-inner);
    border: 1px solid var(--border);
    padding: 2px 6px;
    color: var(--green);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    min-width: 40px;
    text-align: center;
    display: inline-block;
    cursor: pointer;
    transition: border-color 0.2s;
}

.register-val:hover {
    border-color: var(--amber);
}

.btn-retro {
    background: #1a1a1a;
    border: 2px solid var(--border);
    color: var(--green);
    padding: 6px 12px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 32px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.btn-retro:hover {
    background: var(--green-dark);
    border-color: var(--green);
}

.btn-retro:active {
    transform: scale(0.97);
    background: var(--green-dark);
}

.led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    border: 1px solid #333;
    flex-shrink: 0;
}

.led-off { background: #330000; }
.led-on { background: #33ff33; box-shadow: 0 0 6px #33ff33; }
.led-red { background: #ff3333; box-shadow: 0 0 6px #ff3333; }

.crt-display {
    position: relative;
    background: #000;
    border: 3px solid #222;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: inset 0 0 60px rgba(0,0,0,0.8), 0 0 20px rgba(0,0,0,0.5);
}

.crt-display.crt-on::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0,0,0,0.15) 0px,
        rgba(0,0,0,0.15) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 2;
}

.crt-display.crt-on::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
    z-index: 3;
}

.disasm-line {
    padding: 2px 4px;
    white-space: nowrap;
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    min-height: 22px;
}

.disasm-line:hover {
    background: rgba(51,255,51,0.1);
}

.disasm-current {
    background: rgba(51,255,51,0.2) !important;
    border-left: 3px solid var(--green);
}

.breakpoint-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 4px;
    cursor: pointer;
    border: 1px solid #333;
    flex-shrink: 0;
}

.breakpoint-active {
    background: var(--red);
    box-shadow: 0 0 4px var(--red);
}

.hex-row {
    white-space: nowrap;
    font-size: 10px;
    line-height: 1.6;
    overflow-x: auto;
}

.hex-byte {
    cursor: pointer;
    padding: 0 1px;
}

.hex-byte:hover {
    background: rgba(51,255,51,0.2);
}

.keyboard-key {
    background: #1a1a1a;
    border: 1px solid #333;
    border-bottom: 3px solid #222;
    padding: 6px 4px;
    font-size: 10px;
    font-family: 'IBM Plex Mono', monospace;
    color: #aaa;
    cursor: pointer;
    min-width: 28px;
    min-height: 32px;
    text-align: center;
    transition: all 0.1s;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.keyboard-key:hover {
    border-color: var(--green);
    color: var(--green);
}

.keyboard-key.pressed {
    background: var(--green-dark);
    color: var(--green);
    border-color: var(--green);
    border-bottom-width: 1px;
    transform: translateY(2px);
}

.scroll-container {
    overflow-y: auto;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--green-dark) var(--bg-panel-inner);
    -webkit-overflow-scrolling: touch;
}

.scroll-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.scroll-container::-webkit-scrollbar-track {
    background: var(--bg-panel-inner);
}

.scroll-container::-webkit-scrollbar-thumb {
    background: var(--green-dark);
    border-radius: 3px;
}

input[type="text"], input[type="number"], select {
    background: var(--bg-panel-inner);
    border: 1px solid var(--border);
    color: var(--green);
    padding: 4px 6px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    min-height: 28px;
    touch-action: manipulation;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--amber);
}

.flag-bit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    text-align: center;
    font-size: 10px;
    border: 1px solid var(--border);
    cursor: pointer;
    margin: 0 1px;
    touch-action: manipulation;
}

.flag-bit.active {
    background: var(--green-dark);
    color: var(--green);
    border-color: var(--green);
}

.flag-bit.inactive {
    background: var(--bg-panel-inner);
    color: #444;
}

.cassette-widget {
    background: #1a1a1a;
    border: 2px solid #333;
    border-radius: 8px;
    padding: 8px;
}

.tape-counter {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 14px;
    background: #000;
    color: var(--green);
    padding: 2px 8px;
    border: 1px solid #333;
    letter-spacing: 2px;
    display: inline-block;
}

.palette-swatch {
    width: 16px;
    height: 16px;
    display: inline-block;
    border: 1px solid #333;
    vertical-align: middle;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.blink {
    animation: blink 1s infinite;
}

.main-grid {
    display: grid;
    grid-template-columns: 280px 1fr 300px;
    gap: 8px;
    padding: 8px;
    max-width: 1600px;
    margin: 0 auto;
}

/* Header controls wrapping */
.header-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.header-bar {
    padding: 8px 12px;
    border-bottom: 2px solid var(--border);
    background: #0d0d0d;
}

.header-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.header-options {
    display: flex;
    gap: 8px;
    margin-top: 4px;
    font-size: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.status-line {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

/* Tablet layout */
@media (max-width: 1199px) {
    .main-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile layout */
@media (max-width: 767px) {
    .main-grid {
        grid-template-columns: 1fr;
        padding: 4px;
        gap: 4px;
    }

    .header-bar {
        padding: 6px 8px;
    }

    .header-bar h1 {
        font-size: 16px !important;
    }

    .header-top {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-controls {
        width: 100%;
    }

    .btn-retro {
        padding: 6px 8px;
        font-size: 10px;
        min-height: 36px;
    }

    .keyboard-key {
        min-width: 24px;
        min-height: 36px;
        font-size: 9px;
        padding: 4px 2px;
    }

    .panel {
        padding: 6px;
        margin-bottom: 4px;
    }

    .hex-row {
        font-size: 9px;
    }

    .disasm-line {
        font-size: 10px;
    }

    .register-val {
        font-size: 11px;
    }

    .crt-display {
        border-width: 2px;
        border-radius: 4px;
    }

    footer {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }

    .cassette-disk-grid {
        grid-template-columns: 1fr !important;
    }
}

.drop-zone {
    border: 2px dashed var(--border);
    padding: 16px;
    text-align: center;
    transition: border-color 0.2s;
    touch-action: manipulation;
}

.drop-zone.dragover {
    border-color: var(--amber);
    background: rgba(255,170,0,0.05);
}

/* Ensure file input is accessible on mobile */
.drop-zone input[type="file"] {
    font-size: 12px;
    color: #888;
    max-width: 100%;
}

/* Audio range slider */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--green);
    cursor: pointer;
}

/* Table styles */
table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 2px 4px;
}

th {
    color: #888;
}

/* Select on mobile */
select {
    min-height: 32px;
    touch-action: manipulation;
}