@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Orbitron:wght@400;700&display=swap');

:root {
    --bg: #0a0c0f;
    --bg2: #111418;
    --bg3: #181c22;
    --border: rgba(0, 255, 180, 0.15);
    --border-bright: rgba(0, 255, 180, 0.4);
    --green: #00ffb4;
    --green-dim: rgba(0, 255, 180, 0.6);
    --amber: #ffb830;
    --red: #ff4554;
    --blue: #38b4ff;
    --text: #c8d8c8;
    --text-dim: #5a7060;
    --radius: 6px;
}

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

html,
body {
    height: 100%;
}

#game {
    background: var(--bg);
    color: var(--text);
    font-family: "Share Tech Mono", monospace;
    font-size: 13px;
    padding: 12px;
    line-height: 1.4;
    min-height: clamp(500px, 100dvh, 900px);
    display: flex;
    flex-direction: column;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

/* scanline overlay */
#game::before {
    content: "";
    pointer-events: none;
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 0, 0, 0.08) 2px, rgba(0, 0, 0, 0.08) 4px);
    z-index: 999;
}

.orb {
    font-family: "Orbitron", sans-serif;
}

/* --- SCREENS --- */
.screen {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    text-align: center;
    gap: 1rem;
    min-height: 320px;
}

.screen.active {
    display: flex;
}

.screen h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(20px, 5vw, 32px);
    color: var(--green);
    letter-spacing: .1em;
}

.screen p {
    color: var(--text-dim);
    font-size: clamp(11px, 3vw, 13px);
    max-width: 340px;
    line-height: 1.8;
}

.crt-btn {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(11px, 3vw, 13px);
    letter-spacing: .12em;
    padding: .6rem 2rem;
    cursor: pointer;
    border-radius: var(--radius);
    background: transparent;
    color: var(--green);
    border: 1px solid var(--green);
    transition: background .15s, box-shadow .15s;
}

.crt-btn:hover {
    background: rgba(0, 255, 180, 0.1);
    box-shadow: 0 0 12px rgba(0, 255, 180, 0.3);
}

.crt-btn:active {
    transform: scale(.97);
}

.crt-btn.danger {
    color: var(--red);
    border-color: var(--red);
}

.crt-btn.danger:hover {
    background: rgba(255, 69, 84, 0.1);
    box-shadow: 0 0 12px rgba(255, 69, 84, .3);
}

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

.crt-btn.amber:hover {
    background: rgba(255, 184, 48, .1);
}

.crt-btn.sm {
    font-size: 11px;
    padding: .4rem 1rem;
    font-family: 'Share Tech Mono', monospace;
}

/* --- GAME SCREEN --- */
#screen-game {
    display: none;
}

#screen-game.active {
    display: block;
}

/* --- TOP BAR --- */
.topbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.chip {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3px 10px;
    font-size: clamp(10px, 2.5vw, 12px);
    color: var(--text-dim);
    white-space: nowrap;
}

.chip b {
    color: var(--green);
    font-weight: 400;
}

.chip.level-chip {
    color: var(--amber);
    border-color: rgba(255, 184, 48, 0.3);
}

.chip.level-chip b {
    color: var(--amber);
}

/* --- METER --- */

.meter-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.meter-track {
    flex: 1;
    height: 6px;
    background: var(--bg3);
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid var(--border);
    position: relative;
}

.meter-fill {
    height: 100%;
    border-radius: 3px;
    transition: width .08s, background .2s;
}

.meter-pct {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(12px, 3vw, 14px);
    min-width: 3.5ch;
    text-align: right;
    color: var(--green);
}

/* --- OSCILLOSCOPE --- */

.scope-wrap {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    margin-bottom: 10px;
    position: relative;
}

.scope-label {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.scope-label span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pip {
    width: 8px;
    height: 2px;
    border-radius: 1px;
    display: inline-block;
}


canvas.scope {
    display: block;
    width: 100%;
    border-radius: 4px;
    background: #060a06;
    border: 1px solid var(--border);
    /* CRT grid */
    image-rendering: pixelated;
}

/* --- CONTROLS --- */

.ctrl-panel {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    margin-bottom: 10px;
}

.ctrl-panel-label {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.type-btns {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.type-btn {
    font-family: 'Share Tech Mono', monospace;
    font-size: clamp(10px, 2.5vw, 12px);
    padding: 4px 10px;
    cursor: pointer;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-dim);
    transition: all .12s;
    white-space: nowrap;
}

.type-btn:hover:not(:disabled) {
    border-color: var(--green-dim);
    color: var(--green);
}

.type-btn.active {
    background: rgba(0, 255, 180, .12);
    border-color: var(--green);
    color: var(--green);
}

.type-btn.disabled {
    opacity: .25;
    cursor: default;
}

.sliders {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 12px;
}

@media (max-width: 420px) {
    .sliders {
        grid-template-columns: 1fr;
    }
}

.ctrl {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ctrl-lbl {
    font-size: clamp(10px, 2.5vw, 11px);
    color: var(--text-dim);
    display: flex;
    justify-content: space-between;
}

.ctrl-lbl b {
    color: var(--text);
    font-weight: 400;
}

input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 20px;
    background: transparent;
    cursor: pointer;
}

input[type=range]::-webkit-slider-runnable-track {
    height: 3px;
    background: var(--bg3);
    border-radius: 2px;
    border: 1px solid var(--border);
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--green);
    margin-top: -6px;
    border: 2px solid var(--bg);
    box-shadow: 0 0 6px rgba(0, 255, 180, 0.5);
    transition: box-shadow .15s;
}

input[type=range]:hover::-webkit-slider-thumb {
    box-shadow: 0 0 12px rgba(0, 255, 180, .8);
}

input[type=range]::-moz-range-track {
    height: 3px;
    background: var(--bg3);
    border-radius: 2px;
}

input[type=range]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--green);
    border: 2px solid var(--bg);
}

/* --- ACTION ROW --- */

.action-row {
    display: flex;
    gap: 6px;
}

.action-row .crt-btn {
    flex: 1;
    text-align: center;
    font-size: clamp(10px, 2.5vw, 11px);
    padding: .45rem .5rem;
}

/* --- FEEDBACK --- */

.feedback {
    text-align: center;
    min-height: 22px;
    font-size: clamp(11px, 3vw, 13px);
    color: var(--text-dim);
    margin: .5rem 0;
    letter-spacing: .03em;
    transition: color .2s;
}

.feedback.win {
    color: var(--green);
}

.feedback.close {
    color: var(--amber);
}

.feedback.bad {
    color: var(--red);
}

/* --- FLASH --- */
.flash-overlay {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 998;
    opacity: 0;
    transition: opacity .05s;
}

.flash-overlay.go {
    opacity: .18;
    transition: none;
}