/* ===========================
   GLOBAL + DPI SCALING (UI ONLY)
=========================== */
:root {
    --ui-scale: calc(1 * (100dpi / 96));
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #05070a;
    font-family: system-ui, sans-serif;
}

/* Canvas */
#renderCanvas {
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: grab;
}
#renderCanvas:active {
    cursor: grabbing;
}

/* ===========================
   FULLSCREEN LOADER (NO UI SCALE)
=========================== */
#loading {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;

    background: radial-gradient(circle at top, #20253a 0, #05070a 55%, #000 100%);
    color: #f3f3f3;

    /* ⭐ Loader NIE używa var(--ui-scale) */
    font-size: 18px;

    width: 100vw;
    max-width: 100vw;
    padding: 0 16px;
    box-sizing: border-box;

    text-align: center;
    z-index: 10;

    /* ⭐ Loader NIE może być skalowany */
    transform: none !important;
}

/* Tekst ładowania — zawsze się łamie */
#loadingText {
    display: block;

    /* ⭐ Dynamiczny rozmiar czcionki zależny od ekranu, NIE od DPI */
    font-size: clamp(14px, 4vw, 20px);

    max-width: 100%;
    width: 100%;

    white-space: normal;
    word-break: break-word;
    overflow-wrap: break-word;

    line-height: 1.3;
    text-align: center;
}

/* Kropki */
#dots {
    display: inline-block;
    min-width: 1ch;
}

/* Progress bar — responsywny */
#progressContainer {
    width: 60vw;          /* ⭐ automatyczne zmniejszanie */
    max-width: 260px;     /* limit na dużych ekranach */
    height: 6px;
    border-radius: 999px;
    background: rgba(255,255,255,0.1);
    overflow: hidden;
}

#progressBar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #4fd1ff, #9f7aea);
    border-radius: 999px;
    transition: width 0.15s linear;
}

/* ===========================
   UI PANELS (scaled)
=========================== */
.ui {
    transform: scale(var(--ui-scale));
    transform-origin: top right;
}

/* Top-left panel */
#topPanel {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 200px;
    padding: 12px;
    background: rgba(50, 50, 50, 0.85);
    border-radius: 8px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Buttons */
.panel-button {
    width: 100%;
    padding: 6px 0;
    background: #d0d0d0;
    color: #000;
    border: 1px solid #aaa;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}
.panel-button:hover {
    background: #e0e0e0;
}

/* Toggle row */
.toggle-wrapper {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: white;
    font-size: 14px;
}

/* Toggle switch */
.toggle-switch {
    width: 50px;
    height: 26px;
    background: #888;
    border-radius: 20px;
    cursor: pointer;
    transition: background 0.25s ease;
    position: relative;
}
.toggle-switch.on {
    background: #4cd964;
}

/* Toggle knob */
.toggle-knob {
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: left 0.25s ease;
}
.toggle-switch.on .toggle-knob {
    left: 26px;
}

/* ===========================
   TOP-RIGHT BUTTON PANEL
=========================== */
#ui {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    z-index: 20;
    max-width: 360px;
    justify-content: flex-end;
}

.btn {
    padding: 8px 12px;
    background: rgba(20,20,35,0.9);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 12px;
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: 0.18s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}
.btn:hover {
    background: rgba(40,40,70,0.95);
    transform: translateY(-1px);
}
.btn.active {
    border-color: #4fd1ff;
    background: rgba(79,209,255,0.18);
}

/* ===========================
   BOTTOM PANELS
=========================== */
#controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 20;
}

#views {
    position: fixed;
    bottom: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 20;
}

#viewsTitle {
    color: #aaa;
    font-size: 11px;
    margin-bottom: 2px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

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

#legend {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 14px;
    background: rgba(8,10,20,0.9);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 12px;
    line-height: 1.4;
    backdrop-filter: blur(8px);
    z-index: 20;
    max-width: 220px;
}

#legend b {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #9f7aea;
}

/* ===========================
   MOBILE MODE
=========================== */
@media (max-width: 640px) {

    :root {
        --ui-scale: 1.6;
    }

    #ui {
        max-width: 100%;
        left: 10px;
        right: 10px;
        justify-content: center;
    }

    #legend,
    #views {
        display: none;
    }

    #topPanel {
        width: calc(100% - 20px);
        left: 10px;
        right: 10px;
    }

    .panel-button {
        font-size: 13px;
        padding: 8px;
    }

    .btn {
        font-size: 11px;
        padding: 6px 10px;
    }

    #controls {
        bottom: 10px;
        gap: 6px;
    }
}