:root {
    --phosphor: #33ff66;
    --phosphor-bright: #baffcc;
    --phosphor-glow: rgba(51, 255, 102, 0.65);
    --phosphor-dim: rgba(51, 255, 102, 0.35);
    --bg: #050d06;
    --bezel-a: #4a3b2e;
    --bezel-b: #1d1510;
}

[data-theme="amber"] {
    --phosphor: #ffb000;
    --phosphor-bright: #ffe0a8;
    --phosphor-glow: rgba(255, 176, 0, 0.65);
    --phosphor-dim: rgba(255, 176, 0, 0.35);
    --bg: #120a00;
}

[data-theme="white"] {
    --phosphor: #e8e8e8;
    --phosphor-bright: #ffffff;
    --phosphor-glow: rgba(232, 232, 232, 0.6);
    --phosphor-dim: rgba(232, 232, 232, 0.3);
    --bg: #060606;
}

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

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    background: #0a0807;
    font-family: "VT323", "Share Tech Mono", "Courier New", monospace;
    color: var(--phosphor);
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.bezel {
    position: relative;
    width: min(95vw, 1200px);
    height: min(90vh, 820px);
    background:
        radial-gradient(ellipse at 30% 20%, #5a4838 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, #2a1f16 0%, transparent 70%),
        linear-gradient(135deg, var(--bezel-a), var(--bezel-b));
    border-radius: 2.5rem;
    padding: 3rem 3rem 5rem 3rem;
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.8),
        inset 0 2px 4px rgba(255, 230, 180, 0.15),
        inset 0 -2px 10px rgba(0, 0, 0, 0.6);
}

.plate {
    position: absolute;
    bottom: 1.2rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: "Share Tech Mono", monospace;
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    color: rgba(255, 220, 180, 0.55);
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.8);
    user-select: none;
}

.power-led {
    position: absolute;
    bottom: 1.6rem;
    right: 2.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ff3020;
    box-shadow: 0 0 6px #ff4030, 0 0 14px rgba(255, 48, 32, 0.6);
}

.screen-frame {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 1.5rem;
    padding: 1.2rem;
    box-shadow:
        inset 0 0 40px rgba(0, 0, 0, 0.9),
        inset 0 0 4px rgba(0, 0, 0, 1);
}

.screen {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg);
    border-radius: 1rem;
    overflow: hidden;
    transform: perspective(1400px) rotateX(0.6deg);
    box-shadow:
        inset 0 0 100px rgba(0, 0, 0, 0.85),
        inset 0 0 20px rgba(0, 0, 0, 0.6);
    animation: flicker 4s infinite;
}

body.no-flicker .screen {
    animation: none;
}

.vignette {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 45%, rgba(0, 0, 0, 0.55) 100%);
    z-index: 3;
}

.scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.28) 0,
        rgba(0, 0, 0, 0.28) 1px,
        transparent 1px,
        transparent 3px
    );
    z-index: 4;
    mix-blend-mode: multiply;
}

.hband {
    position: absolute;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(transparent, rgba(255, 255, 255, 0.05), transparent);
    pointer-events: none;
    z-index: 5;
    animation: hband 9s linear infinite;
}

@keyframes hband {
    0% { top: -10%; }
    100% { top: 110%; }
}

@keyframes flicker {
    0%, 100% { opacity: 1; }
    23% { opacity: 0.985; }
    50% { opacity: 0.97; }
    77% { opacity: 0.99; }
}

.output {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow-y: auto;
    font-family: "VT323", "Share Tech Mono", "Courier New", monospace;
    font-size: clamp(18px, 2.3vw, 26px);
    line-height: 1.18;
    color: var(--phosphor);
    text-shadow:
        0 0 2px var(--phosphor),
        0 0 8px var(--phosphor-glow),
        0 0 16px var(--phosphor-dim);
    padding: 1.6rem 2rem 2rem 2rem;
    white-space: pre-wrap;
    word-break: break-word;
    scrollbar-width: thin;
    scrollbar-color: var(--phosphor-dim) transparent;
}

.output::-webkit-scrollbar { width: 8px; }
.output::-webkit-scrollbar-track { background: transparent; }
.output::-webkit-scrollbar-thumb { background: var(--phosphor-dim); border-radius: 4px; }

.output .line {
    white-space: pre-wrap;
}

.output .line.dim {
    opacity: 0.72;
}

.output .line.bright {
    color: var(--phosphor-bright);
}

.more-prompt {
    color: var(--phosphor-bright);
    animation: blink 1.05s steps(1) infinite;
}

.prompt-line {
    display: block;
    padding: 0;
    margin: 0;
}

.prompt-mark {
    margin-right: 0.35em;
}

.input {
    outline: none;
    caret-color: transparent;
    display: inline;
    min-width: 1ch;
    white-space: pre;
}

.cursor {
    display: inline-block;
    width: 0.6ch;
    background: var(--phosphor);
    box-shadow: 0 0 6px var(--phosphor-glow);
    animation: blink 1.05s steps(1) infinite;
    margin-left: 1px;
    vertical-align: baseline;
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

.settings {
    position: absolute;
    top: 0.8rem;
    right: 1rem;
    z-index: 10;
    font-family: "Share Tech Mono", monospace;
}

.gear {
    background: transparent;
    border: none;
    color: rgba(255, 220, 180, 0.5);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 0.2rem 0.6rem;
    transition: color 0.2s;
}

.gear:hover {
    color: rgba(255, 220, 180, 0.9);
}

.menu {
    position: absolute;
    top: 2.4rem;
    right: 0.2rem;
    background: rgba(20, 14, 8, 0.95);
    border: 1px solid rgba(255, 220, 180, 0.25);
    padding: 0.8rem 1rem;
    border-radius: 0.4rem;
    color: rgba(255, 220, 180, 0.85);
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 180px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
}

.menu[hidden] {
    display: none;
}

.menu label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
}

.menu select {
    background: #111;
    color: rgba(255, 220, 180, 0.9);
    border: 1px solid rgba(255, 220, 180, 0.3);
    font-family: inherit;
    padding: 0.1rem 0.3rem;
}