:root {
    --mouseX: 0;
    --mouseY: 0;
}

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

body {
    overflow: hidden;
    background-color: #050505;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
    cursor: crosshair;
}

canvas {
    display: block;
}

/* ── Canvas mount ── */
#canvas-mount {
    position: fixed;
    inset: 0;
    z-index: 0;
}

/* ── UI Overlay ── */
.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: padding 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.ui-overlay.content-active {
    padding: 1rem;
}

.ui-overlay > * {
    pointer-events: auto;
}

/* ── Header ── */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    transform: translate(calc(var(--mouseX) * 20px), calc(var(--mouseY) * 15px));
}

.header-left {
    border-left: 4px solid #33ff33;
    padding-left: 1rem;
    position: relative;
}

.header-left h1 {
    font-size: clamp(1.2rem, 5vw, 1.8rem);
    font-weight: 900;
    font-style: italic;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    line-height: 1;
    text-shadow: 0 0 10px rgba(51, 255, 51, 0.5);
}

.status-badge {
    margin-top: 0.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    font-weight: bold;
    color: #33ff33;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blink {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.telemetry {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    background: rgba(0, 20, 0, 0.85);
    padding: 0.8rem 1.2rem;
    border: 1px solid rgba(51, 255, 51, 0.3);
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    position: relative;
    transition: all 0.5s ease;
    width: 340px; /* Fixed width to prevent jitter */
    justify-content: space-between;
}

.content-active .telemetry {
    opacity: 0.2;
    pointer-events: none;
    transform: translateY(20px);
}

.telemetry::before {
    content: '';
    position: absolute;
    top: -5px; left: -5px; width: 10px; height: 10px;
    background: #33ff33; clip-path: polygon(0 0, 100% 0, 0 100%);
}

.tel-item {
    display: flex;
    flex-direction: column;
}

.tel-item label {
    font-size: 0.55rem;
    color: #33ff33;
    opacity: 0.6;
    margin-bottom: 0.2rem;
}

.tel-item span {
    font-size: 1.1rem; 
    font-weight: bold;
    font-family: 'Courier New', Courier, monospace;
    white-space: nowrap;
    overflow: hidden;
    display: inline-block;
    min-width: 60px;
}

/* ── Menu Buttons ── */
.menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: clamp(12rem, 30vw, 18rem);
    pointer-events: auto;
    transition: all 0.5s ease;
}

.content-active .menu {
    opacity: 0.2;
    transform: translateX(-20px);
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: none;
    border: none;
    color: #fff;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    padding: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.menu-btn:hover {
    transform: translateX(0.5rem);
}

.menu-btn .number {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
    transition: background 0.2s ease, color 0.2s ease;
}

.menu-btn:hover .number {
    background: #fff;
    color: #000;
}

.menu-btn .label {
    font-size: clamp(0.8rem, 2.5vw, 1.1rem);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}

.menu-btn:hover .label {
    opacity: 1;
}

.menu-btn.active .number {
    background: #33ff33;
    color: #000;
    border-color: #33ff33;
    box-shadow: 0 0 12px rgba(51, 255, 51, 0.6), 0 0 30px rgba(51, 255, 51, 0.2);
    animation: navPulse 2s ease-in-out infinite;
}

.menu-btn.active .label {
    opacity: 1;
    color: #33ff33;
    text-shadow: 0 0 8px rgba(51, 255, 51, 0.4);
}

@keyframes navPulse {
    0%, 100% { box-shadow: 0 0 12px rgba(51, 255, 51, 0.6), 0 0 30px rgba(51, 255, 51, 0.2); }
    50% { box-shadow: 0 0 18px rgba(51, 255, 51, 0.9), 0 0 40px rgba(51, 255, 51, 0.4); }
}

/* ── Side Panel ── */
.side-panel {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    width: 10rem;
    background: rgba(0, 15, 0, 0.9);
    border: 2px solid #33ff33;
    padding: 1px;
    pointer-events: auto;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8);
}

.panel-header {
    background: #33ff33;
    color: #000;
    font-size: 0.6rem;
    font-weight: 900;
    padding: 0.3rem 0.5rem;
    text-align: center;
    letter-spacing: 0.1em;
}

.source-grid {
    display: flex;
    flex-direction: column;
    padding: 0.5rem;
    gap: 0.25rem;
}

.source-btn {
    background: rgba(51, 255, 51, 0.05);
    border: 1px solid rgba(51, 255, 51, 0.2);
    color: #33ff33;
    font-family: inherit;
    font-size: 0.75rem;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.source-btn:hover {
    background: rgba(51, 255, 51, 0.15);
}

.source-btn.active {
    background: #33ff33;
    color: #000;
    font-weight: 900;
}

.panel-footer {
    font-size: 0.5rem;
    text-align: center;
    padding: 0.3rem;
    opacity: 0.5;
    border-top: 1px solid rgba(51, 255, 51, 0.2);
}

/* ── GRID Toggle (AC/DC) ── */
.source-row {
    display: flex;
    gap: 0.25rem;
    width: 100%;
}

.toggle-container.compact {
    width: 5rem;
    height: 1.7rem; /* Matches button height better */
    background: #000;
    border: 1px solid rgba(51, 255, 51, 0.4);
    position: relative;
    display: flex;
    border-radius: 2px;
    overflow: hidden;
    flex-shrink: 0;
}

.toggle-btn {
    flex: 1;
    z-index: 2;
    background: none;
    border: none;
    color: #33ff33;
    font-family: inherit;
    font-size: 0.6rem;
    font-weight: 900;
    cursor: pointer;
    transition: color 0.3s;
}

.toggle-btn.active {
    color: #000;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: #33ff33;
    z-index: 1;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-container[data-active="ac"] .toggle-slider {
    transform: translateX(100%);
}

/* ── DEVMODE ── */
.dev-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    pointer-events: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

#dev-toggle {
    background: rgba(51, 255, 51, 0.1);
    border: 1px solid #33ff33;
    color: #33ff33;
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: 0.7rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

#dev-menu {
    margin-bottom: 1rem;
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid rgba(51, 255, 51, 0.3);
    padding: 1rem;
    width: 250px;
    backdrop-filter: blur(10px);
}

#dev-menu.hidden {
    display: none;
}

#dev-menu h3 {
    font-size: 0.75rem;
    margin-bottom: 1rem;
    color: #33ff33;
    opacity: 0.8;
}

.dev-control {
    margin-bottom: 1rem;
}

.dev-control label {
    display: block;
    font-size: 0.6rem;
    margin-bottom: 0.25rem;
    opacity: 0.6;
}

.dev-control input[type="range"] {
    width: 100%;
    accent-color: #33ff33;
}

/* ── Mobile Optimization ── */
@media (max-width: 768px) {
    .ui-overlay {
        padding: 0.5rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: space-between;
    }

    .header {
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: 0.5rem;
    }

    .header-left {
        border: none;
        padding: 0;
        text-align: center;
    }

    .telemetry {
        position: static;
        width: 320px;
        margin-top: 1rem;
        padding: 0.5rem 1rem;
        gap: 0.5rem;
        background: rgba(0, 10, 0, 0.9);
    }

    .tel-item label {
        font-size: 0.5rem;
    }

    .tel-item span {
        font-size: 0.8rem;
        min-width: 40px;
    }

    .side-panel {
        position: fixed;
        left: 50%;
        bottom: 1.5rem;
        top: auto;
        right: auto;
        transform: translateX(-50%);
        width: 90vw;
        max-width: 400px;
        flex-direction: row;
        display: flex;
        padding: 0;
        border: 1px solid rgba(51, 255, 51, 0.3);
    }

    .panel-header {
        writing-mode: vertical-lr;
        transform: rotate(180deg);
        padding: 0.3rem;
        font-size: 0.5rem;
        background: rgba(51, 255, 51, 0.1);
    }

    .source-grid {
        flex-direction: row;
        width: 100%;
        padding: 0.3rem;
        gap: 0.3rem;
    }

    .source-btn {
        padding: 0.5rem 0.2rem;
        font-size: 0.55rem;
        flex: 1;
        text-align: center;
    }

    .source-row.grid-row {
        flex: 1.5;
    }

    .panel-footer {
        display: none;
    }

    .menu {
        position: fixed;
        left: 0.5rem;
        top: 50%;
        transform: translateY(-50%);
        width: auto;
        gap: 0.5rem;
    }

    .menu-btn .label {
        display: none;
    }

    .menu-btn .number {
        width: 2.2rem;
        height: 2.2rem;
        font-size: 0.9rem;
    }

    .bottom-nav {
        bottom: 6rem; /* Push up above power source */
    }
}