/* ================================================================
   lienzo.css — PMS · Editor de pintura sobre equirectangulares
   Interfaz oscura (grises), autocontenida y portable.
   ================================================================ */

:root {
    --ui-0:   #151517;   /* viewport (más oscuro) */
    --ui-1:   #1c1c1f;   /* barras */
    --ui-2:   #26262a;   /* hover / paneles */
    --ui-3:   #313137;   /* activo-hover */
    --line:   rgba(255,255,255,0.09);
    --txt:    #ededf0;
    --txt-dim: rgba(255,255,255,0.5);
    --accent: #5aa0ff;
    --accent-soft: rgba(90,160,255,0.20);

    --font-main: 'Bellota', Arial, sans-serif;
    --rail-w:   46px;
    --rrail-w:  56px;
    --pill-r:   22px;

    /* ── Escala de los rieles ─────────────────────────────────────
       Los dos rieles son columnas de altura fija (top:0/bottom:0) y su
       contenido es alto: con 4 deslizadores de 96px el riel derecho medía
       ~880px y el izquierdo ~690px, así que en una ventana normal (600-750px)
       los botones de abajo quedaban fuera de vista. Estas variables encogen
       todo según la altura real de la ventana para que SIEMPRE quepa. */
    --btn:       34px;   /* botón de riel */
    --slider-h:  58px;   /* alto de los deslizadores verticales */
    --gap-l:      3px;   /* separación en el riel izquierdo */
    --gap-r:      8px;   /* separación en el riel derecho */
    --sep-m:      8px;   /* margen de los separadores */
}

@media (max-height: 860px) {
    :root { --slider-h: 46px; --gap-r: 6px; --sep-m: 6px; }
}
@media (max-height: 760px) {
    :root { --btn: 31px; --slider-h: 38px; --gap-l: 2px; --gap-r: 5px; --sep-m: 5px; }
}
@media (max-height: 660px) {
    :root { --btn: 29px; --slider-h: 30px; --gap-l: 2px; --gap-r: 4px; --sep-m: 4px; }
    .vnum { font-size: .64rem; padding: 1px 0; width: 36px; }
}
@media (max-height: 580px) {
    :root { --btn: 27px; --slider-h: 24px; --gap-l: 1px; --gap-r: 3px; --sep-m: 3px; }
}

@font-face { font-family:'Bellota'; src:url('../fonts/Bellota-Regular.woff2') format('woff2'); font-weight:400; font-style:normal; font-display:swap; }
@font-face { font-family:'Bellota'; src:url('../fonts/Bellota-Bold.woff2') format('woff2'); font-weight:700; font-style:normal; font-display:swap; }

* { box-sizing: border-box; }

/* Utilidad genérica: oculta cualquier elemento (paneles de pestañas, etc.) */
.hidden { display: none !important; }

html, body {
    margin: 0; height: 100%;
    overflow: hidden; overscroll-behavior: none;
    font-family: var(--font-main); color: var(--txt);
    background: var(--ui-0);
    -webkit-user-select: none; user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.lienzo-app { position: relative; height: 100dvh; width: 100vw; overflow: hidden; }

/* ── Botones ─────────────────────────────────────────────────── */
.btn-icon {
    width: var(--btn); height: var(--btn); border-radius: 50%; flex: 0 0 auto;
    background: transparent; border: none; color: var(--txt);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1rem; cursor: pointer; transition: background .15s, color .15s;
}
.btn-icon:hover { background: var(--ui-2); }
.btn-icon.on { background: var(--accent-soft); color: #fff; }
.btn-icon:disabled { opacity: .3; cursor: default; }
.btn-icon:disabled:hover { background: transparent; }

.btn-pill {
    border-radius: var(--pill-r); padding: 6px 14px; font-size: .9rem;
    background: var(--ui-2); border: 1px solid var(--line); color: var(--txt);
    display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
    font-family: var(--font-main); transition: background .15s, border-color .15s;
}
.btn-pill:hover { background: var(--ui-3); border-color: rgba(255,255,255,0.16); }
.btn-pill:active { transform: translateY(1px); }

/* ── Logo (vuelve a PMS, superpuesto arriba-izquierda) ───────── */
#logo-home {
    position: absolute; top: 8px; left: 10px; z-index: 40;
    width: 34px; height: 34px; padding: 0; border: none; background: transparent;
    cursor: pointer; opacity: .95; transition: opacity .15s, transform .15s;
}
#logo-home:hover { opacity: 1; transform: scale(1.06); }
#logo-home img { width: 100%; height: 100%; display: block; }

/* ── Área de trabajo (rieles flotantes sobre el lienzo) ──────── */
#workspace { position: absolute; inset: 0; }

#toolrail {
    position: absolute; left: 0; top: 0; bottom: 0; width: var(--rail-w); z-index: 20;
    display: flex; flex-direction: column; align-items: center; gap: var(--gap-l);
    padding: 40px 0 8px; overflow-y: auto; overflow-x: hidden;
    background: rgba(24,24,27,0.72); border-right: 1px solid var(--line);
    backdrop-filter: blur(9px); -webkit-backdrop-filter: blur(9px);
    transition: transform .25s ease, opacity .2s ease;
}
.rail-bottom { margin-top: auto; flex: 0 0 auto; display: flex; flex-direction: column; align-items: center; gap: var(--gap-l); padding-top: 6px; }
/* Alternar 2D/3D — es la acción más importante del riel, así que resalta
   por color de acento, pero mismo tamaño y sin borde que el resto de íconos. */
.btn-icon.toggle3d { color: var(--accent); font-size: 1.05rem; }
.btn-icon.toggle3d:hover { background: var(--accent-soft); color: #fff; }
.btn-icon.toggle3d.on { background: var(--accent); color: #0b1a2b; }
.btn-icon.toggle3d.on:hover { background: #7ab2ff; color: #0b1a2b; }
.tool {
    width: var(--btn); height: var(--btn); border-radius: 50%;
    border: none; background: transparent; color: var(--txt-dim);
    font-size: 1.05rem; cursor: pointer; flex: 0 0 auto;
    display: flex; align-items: center; justify-content: center;
    transition: background .15s, color .15s;
}
.tool:hover { background: var(--ui-2); color: var(--txt); }
.tool.active { background: var(--accent-soft); color: #fff; }
/* Separador de grupos — el margen amplio es lo que agrupa visualmente los
   botones a cada lado, en ambos rieles. */
.rail-sep { width: 22px; height: 1px; background: var(--line); margin: var(--sep-m) 0; flex: 0 0 auto; }

.tool-sub { display: none; flex-direction: column; gap: 2px; padding: 2px 0; flex: 0 0 auto; }
body.show-shapes .tool-sub { display: flex; }
.shape {
    width: 28px; height: 28px; border-radius: 50%;
    border: none; background: transparent; color: var(--txt-dim);
    font-size: .78rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.shape:hover { background: var(--ui-2); }
.shape.active { background: var(--accent-soft); color: #fff; }

/* ── Lienzo / viewport ───────────────────────────────────────── */
#viewport {
    position: absolute; inset: 0; z-index: 1; overflow: hidden; touch-action: none;
    background: radial-gradient(circle at 50% 42%, #202024 0%, #131315 82%);
    cursor: crosshair;
}
#viewport:focus, #viewport:focus-visible { outline: none; }
#stage { position: absolute; top: 0; left: 0; transform-origin: 0 0; will-change: transform; }
#stage canvas { position: absolute; top: 0; left: 0; }
#bg { box-shadow: 0 0 0 1px rgba(255,255,255,0.14), 0 18px 55px rgba(0,0,0,0.55); }
#stroke { pointer-events: none; }
#overlay { position: absolute; top: 0; left: 0; pointer-events: none; z-index: 5; }

/* Modo 3D (esfera editable) */
#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: none; touch-action: none; z-index: 4; }
body.mode-3d #gl { display: block; }
body.mode-3d #stage, body.mode-3d #overlay, body.mode-3d #empty-hint { display: none; }

#empty-hint {
    position: absolute; inset: 0; z-index: 6; pointer-events: none;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 14px; text-align: center; padding: 24px; color: var(--txt-dim);
}
#empty-hint p { max-width: 340px; font-size: 1rem; margin: 0; }

/* Panel de inicio dentro del editor — permite elegir base sin salir de la
   app (antes, sin parámetros en la URL, el editor rebotaba a la portada y
   se veía "muerto": todo sale temprano mientras no haya imagen cargada). */
.start-panel {
    pointer-events: auto;
    display: flex; flex-direction: column; align-items: center; gap: 12px;
    background: rgba(28,28,32,0.92); border: 1px solid var(--line);
    border-radius: 20px; padding: 32px 30px;
    max-width: min(92vw, 460px);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 24px 60px rgba(0,0,0,0.55);
}
.start-panel-icon { font-size: 2.2rem; color: var(--accent); opacity: .9; }
.start-panel h2 { margin: 0; font-size: 1.3rem; font-weight: 700; color: var(--txt); }
.start-panel-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 6px; }
.start-panel-actions .btn-pill { text-decoration: none; }
.start-panel-color {
    display: flex; align-items: center; gap: 10px; margin-top: 4px;
    font-size: .82rem; color: var(--txt-dim);
}
.start-panel-color input[type="color"] {
    width: 38px; height: 28px; border: 1px solid var(--line); border-radius: 6px;
    background: none; cursor: pointer; padding: 0;
}

/* ── Barra derecha (parámetros) ──────────────────────────────── */
#rightrail {
    position: absolute; right: 0; top: 0; bottom: 0; width: var(--rrail-w); z-index: 20;
    display: flex; flex-direction: column; align-items: center; gap: var(--gap-r);
    padding: 10px 4px; overflow-y: auto; overflow-x: hidden;
    background: rgba(24,24,27,0.72); border-left: 1px solid var(--line);
    backdrop-filter: blur(9px); -webkit-backdrop-filter: blur(9px);
    transition: transform .25s ease, opacity .2s ease;
}
.swatch {
    width: 36px; height: 36px; border-radius: 50%; flex: 0 0 auto;
    border: 2px solid rgba(255,255,255,0.85); cursor: pointer; padding: 0;
    background: #e14a4a; box-shadow: 0 0 0 1px rgba(0,0,0,0.4) inset;
}
.hex { font-size: .64rem; color: var(--txt-dim); margin-top: -5px; letter-spacing: .02em; flex: 0 0 auto; }
.recent { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; flex: 0 0 auto; }
.chip { width: 18px; height: 18px; border-radius: 4px; border: 1px solid var(--line); cursor: pointer; padding: 0; }
.chip:hover { outline: 1px solid var(--accent); }

.vparam { display: flex; flex-direction: column; align-items: center; gap: 2px; flex: 0 0 auto; }
.vlabel { font-size: .64rem; color: var(--txt-dim); }
.vparam b { font-size: .72rem; font-weight: 700; }
.vrange {
    -webkit-appearance: slider-vertical; appearance: slider-vertical;
    writing-mode: vertical-lr; direction: rtl;
    width: 22px; height: var(--slider-h); accent-color: var(--accent); cursor: pointer; flex: 0 0 auto;
}
.vcheck { display: flex; flex-direction: column; align-items: center; gap: 2px; flex: 0 0 auto; font-size: .64rem; color: var(--txt-dim); cursor: pointer; }

/* Casilla editable del valor (antes era un <b> de solo lectura) */
.vnum {
    width: 40px; max-width: 100%; flex: 0 0 auto; text-align: center;
    font-family: var(--font-main); font-size: .72rem; font-weight: 700; color: var(--txt);
    background: rgba(255,255,255,0.06); border: 1px solid var(--line);
    border-radius: 6px; padding: 2px 0; -moz-appearance: textfield; appearance: textfield;
}
.vnum::-webkit-outer-spin-button,
.vnum::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.vnum:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,0.11); }
.vcheck input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }

/* Selector de modo de mezcla — el riel es angosto, el texto se recorta en
   estado cerrado pero el desplegable nativo se abre a su ancho completo. */
.vselect {
    width: 44px; max-width: 100%; font-family: var(--font-main); font-size: .58rem;
    background: var(--ui-2); color: var(--txt); border: 1px solid var(--line);
    border-radius: 6px; padding: 3px 2px; cursor: pointer;
}
.vselect:disabled { opacity: .4; cursor: default; }
.vselect option { background: var(--ui-1); color: var(--txt); font-size: .85rem; }

/* Barra de confirmación al colocar una imagen importada */
.place-bar {
    position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 30;
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center;
    max-width: calc(100% - 24px);
    background: rgba(28,28,32,0.92); border: 1px solid var(--line); border-radius: var(--pill-r);
    padding: 8px 12px; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.place-hint { font-size: .76rem; color: var(--txt-dim); padding: 0 4px; }

/* ── Ocultar barras (Tab) — deslizamiento desde los bordes ───── */
body.chrome-hidden #toolrail  { transform: translateX(-100%); opacity: 0; pointer-events: none; }
body.chrome-hidden #rightrail { transform: translateX(100%);  opacity: 0; pointer-events: none; }

#restore-tools {
    position: fixed; left: 10px; top: 44px; z-index: 90;
    width: 38px; height: 38px; border-radius: 50%;
    display: none; align-items: center; justify-content: center;
    background: rgba(30,30,34,0.85); color: #fff;
    border: 1px solid var(--line); cursor: pointer; font-size: 1.05rem;
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
body.chrome-hidden #restore-tools { display: flex; }

/* ── Pantalla completa (F) — el lienzo permanece visible ─────── */
.lienzo-app:fullscreen, .lienzo-app:-webkit-full-screen { width: 100vw; height: 100vh; }

/* ── Overlays / modales ──────────────────────────────────────── */
.overlay { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.overlay-bg { position: absolute; inset: 0; background: rgba(0,0,0,0.72); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.overlay-card {
    position: relative; width: 100%; max-width: 760px; max-height: 86vh; overflow-y: auto;
    background: var(--ui-1); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px 18px;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.modal-head h2 { margin: 0; font-size: 1.2rem; font-weight: 700; }

.file-btn { display: inline-flex; cursor: pointer; }

/* ── Paleta de colores (popover anclado al swatch, transparente) ─ */
#palette-pop {
    position: fixed; z-index: 95; padding: 0;
    --palette-left: -318px;
    --palette-top: 18px;
    transform: translate(var(--palette-left), var(--palette-top));
}
/* Contenedor de la paleta. Dentro se inserta el SVG EN EL DOM (no como
   imagen rasterizada), así el color se lee de la forma tocada y queda nítido. */
#palette {
    display: block; width: min(70vw, 300px); height: min(70vw, 300px);
    max-width: 300px; max-height: 300px; border-radius: 12px;
    overflow: hidden; touch-action: none; background: transparent;
    filter: drop-shadow(0 10px 26px rgba(0,0,0,0.6));
}
#palette svg { display: block; width: 100%; height: 100%; touch-action: none; }
#palette svg * { cursor: inherit; }

/* Cursor de cuentagotas (sobre la paleta y con la herramienta/Alt activos) */
#viewport.cur-drop, #palette {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'%3E%3Cpath d='M3 25 l1.6 -4.6 11.8 -11.8 3 3 -11.8 11.8 z' fill='%23fff' stroke='%23000' stroke-width='1.4' stroke-linejoin='round'/%3E%3Cpath d='M16.4 6.4 l3-3 a2.1 2.1 0 0 1 3 3 l-3 3 z' fill='%23fff' stroke='%23000' stroke-width='1.4' stroke-linejoin='round'/%3E%3C/svg%3E") 3 25, crosshair;
}

/* ── Modal publicar ──────────────────────────────────────────── */
.publish-card { max-width: 460px; }
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; font-size: .82rem; color: var(--txt-dim); }
.field input {
    background: rgba(255,255,255,0.06); border: 1px solid var(--line); border-radius: 8px;
    color: var(--txt); font-family: var(--font-main); font-size: 1rem; padding: 9px 12px;
}
.field input:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,0.09); }
.publish-note { font-size: .8rem; color: var(--txt-dim); margin: 2px 0 6px; }
.publish-feedback { font-size: .9rem; margin: 4px 0; min-height: 1.2em; }
.publish-feedback.ok { color: #7fd88f; }
.publish-feedback.err { color: #ff9b9b; }
.publish-feedback a { color: var(--accent); font-weight: 700; }
.publish-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #0b1a2b; font-weight: 700; }
.btn-primary:hover { background: #7ab2ff; border-color: #7ab2ff; }
.btn-primary:disabled { opacity: .5; cursor: default; }

/* ── Modal información y apoyo ────────────────────────────────── */
.info-card { max-width: 460px; }
.info-lead { font-size: .95rem; color: var(--txt); opacity: .92; margin: 0 0 4px; }
.info-tips { margin: 6px 0 2px; padding-left: 18px; font-size: .86rem; color: var(--txt-dim); line-height: 1.5; }
.info-tips b { color: var(--txt); }

.modal-divider { border: none; border-top: 1px solid var(--line); margin: 14px 0; }
.modal-subhead { margin: 0 0 8px; font-size: .98rem; font-weight: 700; color: var(--txt); }

.donate-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.donate-col {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px;
}
.donate-col-label { font-size: .72rem; color: var(--txt-dim); text-transform: uppercase; letter-spacing: .03em; white-space: nowrap; }
.donate-col code {
    flex: 1 1 auto; min-width: 0; font-family: 'Courier New', monospace; font-size: .92rem;
    color: var(--txt); background: none; overflow-wrap: anywhere;
}
.donate-copy {
    width: 26px; height: 26px; border-radius: 50%; flex: 0 0 auto;
    background: transparent; border: 1px solid var(--line); color: var(--txt-dim);
    display: flex; align-items: center; justify-content: center; cursor: pointer;
    font-size: .8rem; transition: background .15s, color .15s;
}
.donate-copy:hover { background: var(--ui-3); color: var(--txt); }
.donate-copy.copied { background: var(--accent); border-color: var(--accent); color: #0b1a2b; }
.donate-copied { min-height: 1em; font-size: .78rem; color: var(--accent); margin-top: 6px; text-align: right; }

.btn-donate { background: #e0679a; border-color: #e0679a; color: #fff; text-decoration: none; white-space: nowrap; }
.btn-donate:hover { background: #e879a8; border-color: #e879a8; }

@media (max-width: 480px) { .donate-cols { grid-template-columns: 1fr; } }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 700px) {
    :root { --rrail-w: 52px; }
}

/* Barra de desplazamiento visible y delgada: si aun así el contenido no cabe,
   que se note que el riel se puede desplazar (antes era invisible). */
#toolrail, #rightrail { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.28) transparent; }
#toolrail::-webkit-scrollbar, #rightrail::-webkit-scrollbar { width: 5px; }
#toolrail::-webkit-scrollbar-thumb, #rightrail::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,.28); border-radius: 3px;
}
#toolrail::-webkit-scrollbar-track, #rightrail::-webkit-scrollbar-track { background: transparent; }