/* Outfit 5.2.5 from @fontsource/outfit, SIL Open Font License (vendor/outfit-5.2.5/OFL.txt) */
@font-face {
    font-family: 'Outfit';
    font-style: normal;
    font-display: swap;
    font-weight: 300;
    src: url(../vendor/outfit-5.2.5/outfit-latin-300-normal.woff2) format('woff2');
}

@font-face {
    font-family: 'Outfit';
    font-style: normal;
    font-display: swap;
    font-weight: 400;
    src: url(../vendor/outfit-5.2.5/outfit-latin-400-normal.woff2) format('woff2');
}

@font-face {
    font-family: 'Outfit';
    font-style: normal;
    font-display: swap;
    font-weight: 600;
    src: url(../vendor/outfit-5.2.5/outfit-latin-600-normal.woff2) format('woff2');
}

@font-face {
    font-family: 'Outfit';
    font-style: normal;
    font-display: swap;
    font-weight: 700;
    src: url(../vendor/outfit-5.2.5/outfit-latin-700-normal.woff2) format('woff2');
}

* {
    margin: 0;
    padding: 0;
    user-select: none;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    background: #020406;
    overflow: hidden;
    width: 100vw;
    height: 100dvh;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

body::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    z-index: 200;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

@keyframes flicker {
    0% { opacity: 0.27861; }
    5% { opacity: 0.34769; }
    10% { opacity: 0.23604; }
    15% { opacity: 0.90626; }
    20% { opacity: 0.18128; }
    25% { opacity: 0.83891; }
    30% { opacity: 0.65583; }
    35% { opacity: 0.57807; }
    40% { opacity: 0.26559; }
    45% { opacity: 0.84693; }
    50% { opacity: 0.96019; }
    55% { opacity: 0.08594; }
    60% { opacity: 0.20313; }
    65% { opacity: 0.71988; }
    70% { opacity: 0.53455; }
    75% { opacity: 0.37288; }
    80% { opacity: 0.71428; }
    85% { opacity: 0.70419; }
    90% { opacity: 0.7003; }
    95% { opacity: 0.36108; }
    100% { opacity: 0.24387; }
}

@keyframes slideUp {
    from { transform: translate(-50%, -40%); opacity: 0; filter: blur(10px); }
    to { transform: translate(-50%, -50%); opacity: 1; filter: blur(0); }
}

@keyframes btnSlideUp {
    from { transform: translateY(20px); opacity: 0; filter: blur(10px); }
    to { transform: translateY(0); opacity: 1; filter: blur(0); }
}

.center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.blueFont {
    font-family: 'Outfit', sans-serif;
    color: #fff;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

#game {
    box-shadow: 0 0 100px rgba(0,0,0,1), inset 0 0 100px rgba(62, 127, 249, 0.1);
    background: #05070a;
    width: 1280px;
    height: 720px;
    border: 1px solid rgba(62, 127, 249, 0.2);
    /* Fixed so the unscaled 1280px box never widens the page on phones */
    position: fixed;
    left: 50%;
    top: 50%;
    margin: -360px 0 0 -640px;
    transform-origin: center center;
    border-radius: 4px;
    overflow: hidden;
}

.btn {
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    background: rgba(62, 127, 249, 0.05);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(62, 127, 249, 0.3);
    display: block;
    cursor: pointer;
    color: #fff;
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 600;
    padding: 12px 24px;
    text-decoration: none;
    text-align: center;
    margin: 6px;
    animation: btnSlideUp 1.6s ease-out forwards; transition: all 0.3s ease; opacity: 0;
    border-radius: 2px;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(62, 127, 249, 0.4),
        transparent
    );
    transition: all 0.6s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background: rgba(62, 127, 249, 0.2);
    border-color: #3e7ff9;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(62, 127, 249, 0.4);
}

.btn:active {
    transform: translateY(0);
}

#levelInfo, #nodeInfo {
    font-family: 'Outfit', sans-serif;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.8;
    font-size: 20px;
    position: absolute;
    top: 15px;
}

#levelInfo { left: 20px; }
#nodeInfo { right: 20px; }

#loading {
    top: 50%;
}

#loadingbar {
    border: 1px solid #3e7ff9;
    box-shadow: 0 0 15px rgba(62, 127, 249, 0.5);
    background: #000;
}

#main-menu {
    width: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 50px;
    animation: slideUp 1.2s ease-out forwards;
}

#title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.circuit-logo {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.circuit-logo .core {
    width: 40px;
    height: 40px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 0 40px 10px rgba(62, 127, 249, 0.8), 0 0 100px 20px rgba(62, 127, 249, 0.4);
    animation: corePulse 2s infinite ease-in-out;
}

.circuit-logo .ring {
    position: absolute;
    border: 2px solid transparent;
    border-radius: 50%;
    border-top-color: rgba(62, 127, 249, 0.6);
    border-bottom-color: rgba(62, 127, 249, 0.4);
    animation: rotate 10s linear infinite;
}

.circuit-logo .ring:nth-child(2) {
    width: 100px;
    height: 100px;
    border-left-color: rgba(62, 127, 249, 0.3);
    animation-duration: 15s;
}

.circuit-logo .ring:nth-child(3) {
    width: 150px;
    height: 150px;
    border-right-color: rgba(255, 68, 68, 0.3);
    animation-duration: 20s;
    animation-direction: reverse;
}

.circuit-logo .ring:nth-child(4) {
    width: 200px;
    height: 200px;
    border-top-color: rgba(62, 127, 249, 0.1);
    animation-duration: 30s;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes corePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 80px;
    letter-spacing: 20px;
    margin-right: -20px;
    background: linear-gradient(to bottom, #fff, #444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 20px rgba(62, 127, 249, 0.2));
}

#description {
    width: 700px;
    text-align: center;
    background: rgba(0, 0, 0, 0.6);
    padding: 40px;
    border-radius: 4px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(62, 127, 249, 0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

#description .status-line {
    font-size: 12px;
    color: #3e7ff9;
    letter-spacing: 4px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

#description .status-line span {
    color: #ff4444;
    animation: flicker 0.5s infinite;
}

#description h2 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 8px;
    color: #fff;
    letter-spacing: 1px;
}

#description h3 {
    font-size: 14px;
    font-weight: 300;
    opacity: 0.6;
    line-height: 1.6;
}

#menu {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    width: auto;
}

#menu .btn {
    margin-top: 0;
    width: 240px;
    display: block;
    text-transform: uppercase;
}

.hidden {
    visibility: hidden;
}

#levelDone {
    text-align: center;
    background-color: rgba(0, 0, 0, 0.5);
    box-shadow: 0 10px 34px -10px rgba(0,0,0,0.75);
    width: 100%;
    padding: 80px 0 80px 0;
    border-top: 1px solid grey;
    border-bottom: 1px solid grey;
}

#levelDone h1 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 80px;
    letter-spacing: -2px;
    background: linear-gradient(to bottom, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#content {
    position: absolute;
    width: 100%;
    height: 100%;
}

#reset {
    position: absolute;
    left: 20px;
    bottom: 20px;
    display: flex;
    gap: 10px;
    z-index: 100;
}

#reset .btn {
    padding: 8px 16px;
    font-size: 14px;
    min-width: 80px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tutorial {
    position: absolute;
    right: 100px;
    top: 50px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid #999;
    box-shadow: 11px 10px 34px 0px rgba(0,0,0,0.75);
    backdrop-filter: blur(5px);
    border-radius: 8px;
}

#settings-container {
    position: absolute;
    right: 20px;
    bottom: 20px;
    display: flex;
    gap: 12px;
    z-index: 200;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
}

.settings-btn {
    background: rgba(62, 127, 249, 0.1);
    border: 1px solid rgba(62, 127, 249, 0.3);
    color: rgba(255, 255, 255, 0.7);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.settings-btn svg {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.settings-btn .slash {
    display: none;
}

.settings-btn:hover, .settings-btn:focus-visible {
    background: rgba(62, 127, 249, 0.2);
    border-color: #3e7ff9;
    color: #fff;
    box-shadow: 0 0 15px rgba(62, 127, 249, 0.4);
}

.settings-btn.muted {
    color: #ff4444;
    border-color: rgba(255, 68, 68, 0.3);
}

.settings-btn.muted .slash {
    display: inline;
}

.settings-btn.muted .wave {
    display: none;
}

/* Level select */
#levelSelect {
    width: 900px;
    padding: 40px;
    text-align: center;
    background: rgba(0, 0, 0, 0.75);
    border: 1px solid rgba(62, 127, 249, 0.3);
    border-radius: 4px;
    backdrop-filter: blur(15px);
    z-index: 150;
}

#levelSelect h2 {
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 6px;
    text-transform: uppercase;
    margin-bottom: 30px;
}

#levelGrid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 14px;
    margin-bottom: 30px;
}

#levelGrid button {
    font-family: 'Outfit', sans-serif;
    font-size: 26px;
    font-weight: 600;
    height: 76px;
    color: #fff;
    background: rgba(62, 127, 249, 0.08);
    border: 1px solid rgba(62, 127, 249, 0.35);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
}

#levelGrid button:hover:not(:disabled), #levelGrid button:focus-visible {
    background: rgba(62, 127, 249, 0.3);
    border-color: #3e7ff9;
}

#levelGrid button.solved {
    border-color: rgba(80, 220, 120, 0.7);
    box-shadow: inset 0 0 18px rgba(80, 220, 120, 0.25);
}

#levelGrid button.solved::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #50dc78;
    box-shadow: 0 0 8px #50dc78;
}

#levelGrid button.current {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

#levelGrid button:disabled {
    opacity: 0.3;
    cursor: default;
}

#closeLevelsBtn {
    display: inline-block;
    width: 240px;
}

/* ---------- Compact layout (phones) ----------
   html.js sets data-layout="below" or "side" on #game when the stage is too
   small for its own buttons. Elements below use zoom: var(--inv) (1 / stage
   scale), so their sizes are real CSS pixels: 44px touch targets, 12px+ text. */

#game[data-layout="below"],
#game[data-layout="side"] {
    overflow: visible;
}

[data-layout="below"] #reset,
[data-layout="side"] #reset,
[data-layout="below"] #settings-container,
[data-layout="side"] #settings-container,
[data-layout="below"] #levelInfo,
[data-layout="side"] #levelInfo,
[data-layout="below"] #nodeInfo,
[data-layout="side"] #nodeInfo,
[data-layout="below"] #main-menu,
[data-layout="side"] #main-menu,
[data-layout="below"] #levelSelect,
[data-layout="side"] #levelSelect,
[data-layout="below"] #levelDone,
[data-layout="side"] #levelDone,
[data-layout="below"] #loading,
[data-layout="side"] #loading {
    zoom: var(--inv);
}

[data-layout="below"] #reset,
[data-layout="side"] #reset {
    gap: 6px;
}

[data-layout="below"] #reset .btn,
[data-layout="side"] #reset .btn {
    min-width: 0;
    min-height: 44px;
    margin: 0;
    padding: 0 12px;
    font-size: 13px;
    letter-spacing: 1px;
    line-height: 42px;
    backdrop-filter: none;
}

[data-layout="below"] .settings-btn,
[data-layout="side"] .settings-btn {
    width: 44px;
    height: 44px;
    backdrop-filter: none;
}

[data-layout="below"] .settings-btn svg,
[data-layout="side"] .settings-btn svg {
    width: 20px;
    height: 20px;
}

[data-layout="below"] #settings-container,
[data-layout="side"] #settings-container {
    gap: 6px;
}

/* Bar under the stage */
[data-layout="below"] #reset {
    top: 100%;
    bottom: auto;
    left: 0;
    margin-top: 4px;
}

[data-layout="below"] #settings-container {
    top: 100%;
    bottom: auto;
    right: 0;
    margin-top: 4px;
}

/* Column beside the stage */
[data-layout="side"] #reset {
    top: 0;
    bottom: auto;
    left: 100%;
    margin-left: 8px;
    width: 108px;
    flex-direction: column;
}

[data-layout="side"] #settings-container {
    top: auto;
    bottom: 0;
    right: auto;
    left: 100%;
    margin-left: 8px;
}

[data-layout="below"] #levelInfo,
[data-layout="side"] #levelInfo,
[data-layout="below"] #nodeInfo,
[data-layout="side"] #nodeInfo {
    top: 6px;
    font-size: 13px;
    letter-spacing: 1px;
    opacity: 1;
}

[data-layout="below"] #levelInfo,
[data-layout="side"] #levelInfo {
    left: 8px;
}

[data-layout="below"] #nodeInfo,
[data-layout="side"] #nodeInfo {
    right: 8px;
}

/* Menus, in CSS pixels; the stage is at least 476 x 268 px here */
[data-layout="below"] #main-menu,
[data-layout="side"] #main-menu {
    width: calc(1280px * var(--s) - 24px);
    max-width: 640px;
    gap: 10px;
}

[data-layout="below"] #title,
[data-layout="side"] #title {
    flex-direction: row;
    gap: 14px;
}

[data-layout="below"] .circuit-logo,
[data-layout="side"] .circuit-logo {
    zoom: 0.24;
}

[data-layout="below"] .logo-text,
[data-layout="side"] .logo-text {
    font-size: 34px;
    letter-spacing: 9px;
    margin-right: -9px;
}

[data-layout="below"] #description,
[data-layout="side"] #description {
    width: 100%;
    padding: 10px 14px;
    backdrop-filter: none;
}

[data-layout="below"] #description .status-line,
[data-layout="side"] #description .status-line {
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 6px;
}

[data-layout="below"] #description h2,
[data-layout="side"] #description h2 {
    font-size: 15px;
    margin-bottom: 4px;
}

[data-layout="below"] #description h3,
[data-layout="side"] #description h3 {
    font-size: 12px;
    line-height: 1.4;
    opacity: 0.75;
}

[data-layout="below"] #menu,
[data-layout="side"] #menu {
    gap: 8px;
    width: 100%;
}

[data-layout="below"] #menu .btn,
[data-layout="side"] #menu .btn {
    flex: 1 1 0;
    width: auto;
    min-height: 44px;
    margin: 0;
    padding: 0 8px;
    font-size: 13px;
    letter-spacing: 1px;
    line-height: 42px;
    white-space: nowrap;
    backdrop-filter: none;
}

[data-layout="below"] #levelSelect,
[data-layout="side"] #levelSelect {
    width: calc(1280px * var(--s) - 16px);
    max-width: 560px;
    padding: 10px 12px;
    backdrop-filter: none;
}

[data-layout="below"] #levelSelect h2,
[data-layout="side"] #levelSelect h2 {
    font-size: 18px;
    letter-spacing: 3px;
    margin-bottom: 8px;
}

[data-layout="below"] #levelGrid,
[data-layout="side"] #levelGrid {
    gap: 6px;
    margin-bottom: 8px;
}

[data-layout="below"] #levelGrid button,
[data-layout="side"] #levelGrid button {
    height: 44px;
    font-size: 18px;
}

[data-layout="below"] #levelGrid button.solved::after,
[data-layout="side"] #levelGrid button.solved::after {
    top: 4px;
    right: 4px;
    width: 7px;
    height: 7px;
}

[data-layout="below"] #closeLevelsBtn,
[data-layout="side"] #closeLevelsBtn {
    width: 160px;
    min-height: 44px;
    margin: 0;
    padding: 0 12px;
    font-size: 13px;
    line-height: 42px;
    backdrop-filter: none;
}

[data-layout="below"] #levelDone,
[data-layout="side"] #levelDone {
    width: calc(1280px * var(--s));
    padding: 16px 0;
}

[data-layout="below"] #levelDone h1,
[data-layout="side"] #levelDone h1 {
    font-size: 34px;
    letter-spacing: -1px;
    margin-bottom: 10px;
}

[data-layout="below"] #nextBtn,
[data-layout="side"] #nextBtn {
    display: inline-block;
    min-height: 44px;
    margin: 0;
    padding: 0 24px;
    font-size: 14px;
    line-height: 42px;
    backdrop-filter: none;
}

/* The tutorial cards are canvases with 20px text. Draw them at 0.6 CSS px per
   pixel (12px text) in the gap between the coils and the socket that levels
   1 and 3 (the ones with tutorials) keep clear, stage x 545-1190; smaller
   stages shrink them to fit that gap. Offsets are divided by the zoom, which scales them. */
[data-layout="below"] .tutorial,
[data-layout="side"] .tutorial {
    --tz: min(0.6 * var(--inv), 1.43);
    zoom: var(--tz);
    top: calc(max(36px, 30px * var(--inv)) / var(--tz)); /* below the node counter */
    left: calc(545px / var(--tz));
    right: auto;
    box-shadow: none;
    pointer-events: none;
}