/* ==========================================================================
   Eximir Space — Canvas de ideas (vanilla, sin build).
   Reescrito desde cero: reemplaza el bundle React compilado. Toda la
   persistencia va a Hostinger (colección `space`); nada en localStorage.
   Identidad clara del ecosistema: fondo aireado, acento ámbar, serif Fraunces.
   ========================================================================== */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  --accent: #ffb03a;
  --accent-strong: #f0980f;
  --accent-soft: #fff4e0;
  --ink-strong: #1c2331;
  --ink: #333c4d;
  --ink-soft: #6b7688;
  --ink-faint: #9aa4b4;
  --line: #e7e3da;
  --surface: #ffffff;
  --bg: #f6f4ef;
  --bg-dots: #e6e1d6;
  --thread: #d8cdb8;
  --danger: #e0553d;
  --shadow: 0 8px 30px rgba(28, 35, 49, 0.08);
  --shadow-lift: 0 16px 44px rgba(28, 35, 49, 0.16);
}

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

html, body {
  height: 100%; width: 100%; overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  touch-action: none;
  overscroll-behavior: none;
}

/* ---------- Lienzo ---------- */
#canvas {
  position: fixed; inset: 0;
  background-color: var(--bg);
  background-image: radial-gradient(var(--bg-dots) 1.4px, transparent 1.4px);
  background-size: 26px 26px;
  cursor: grab;
  overflow: hidden;
}
#canvas.panning { cursor: grabbing; }
#canvas.connect-mode { cursor: crosshair; }

/* Mundo transformado (pan + zoom). Los nodos viven en coordenadas de mundo. */
#world { position: absolute; top: 0; left: 0; transform-origin: 0 0; will-change: transform; }
#links { position: absolute; top: 0; left: 0; overflow: visible; pointer-events: none; z-index: 1; }
#links path { fill: none; stroke: var(--thread); stroke-width: 2.5; stroke-linecap: round; }
#nodes { position: absolute; top: 0; left: 0; z-index: 2; }

/* ---------- Tarjeta de idea ---------- */
.node {
  position: absolute; width: 250px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 18px; box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex; flex-direction: column;
}
.node:hover { box-shadow: var(--shadow-lift); }
.node.selected { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft), var(--shadow-lift); }
.node.connect-target { border-color: var(--accent-strong); border-style: dashed; }
.node.dragging { box-shadow: var(--shadow-lift); z-index: 50; }

.node-head {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 14px 14px 10px; cursor: grab;
}
.node-head.grabbing { cursor: grabbing; }
.node-dot { flex: 0 0 auto; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); margin-top: 6px; }
.node-title {
  flex: 1; border: none; outline: none; resize: none; overflow: hidden;
  background: transparent; color: var(--ink-strong);
  font-family: "Fraunces", serif; font-weight: 600; font-size: 16px; line-height: 1.3;
  min-height: 22px;
}
.node-title::placeholder { color: var(--ink-faint); }

.node-menu { flex: 0 0 auto; display: flex; gap: 2px; opacity: 0; transition: opacity 0.15s ease; }
.node:hover .node-menu, .node.selected .node-menu { opacity: 1; }
.node-menu button {
  border: none; background: transparent; cursor: pointer; color: var(--ink-faint);
  width: 24px; height: 24px; border-radius: 7px; font-size: 13px; line-height: 1;
  display: grid; place-items: center; transition: background 0.15s ease, color 0.15s ease;
}
.node-menu button:hover { background: var(--bg); color: var(--ink); }
.node-menu button.del:hover { background: #fdece8; color: var(--danger); }

/* Pasos */
.node-steps { padding: 0 14px 12px; display: flex; flex-direction: column; gap: 6px; }
.step {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid transparent; border-radius: 10px;
  padding: 7px 9px; transition: border-color 0.15s ease, background 0.15s ease;
}
.step:focus-within { background: var(--surface); border-color: var(--line); }
.step-num {
  flex: 0 0 auto; width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-strong);
  font-family: "JetBrains Mono", monospace; font-size: 10px; font-weight: 500;
  display: grid; place-items: center;
}
.step-text {
  flex: 1; border: none; outline: none; background: transparent;
  color: var(--ink); font-size: 13px; font-family: "Inter", sans-serif;
}
.step-text::placeholder { color: var(--ink-faint); }
.step-del {
  flex: 0 0 auto; border: none; background: transparent; cursor: pointer;
  color: var(--ink-faint); font-size: 14px; width: 18px; height: 18px;
  opacity: 0; transition: opacity 0.15s ease, color 0.15s ease;
}
.step:hover .step-del { opacity: 1; }
.step-del:hover { color: var(--danger); }
.add-step {
  display: flex; align-items: center; gap: 6px;
  border: 1px dashed var(--line); background: transparent; cursor: pointer;
  border-radius: 10px; padding: 7px 9px; color: var(--ink-soft);
  font-size: 12px; font-family: "Inter", sans-serif;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.add-step:hover { border-color: var(--accent); color: var(--accent-strong); }
.add-step:disabled { opacity: 0.4; cursor: default; }

/* Punto de conexión (nace un hilo desde aquí) */
.node-connect {
  position: absolute; right: -9px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--thread);
  cursor: pointer; opacity: 0; transition: opacity 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  display: grid; place-items: center; z-index: 3;
}
.node:hover .node-connect { opacity: 1; }
.node-connect:hover { border-color: var(--accent); transform: translateY(-50%) scale(1.2); }

/* ---------- Barra de herramientas ---------- */
#toolbar {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  z-index: 800; display: flex; align-items: center; gap: 6px;
  background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 8px; box-shadow: var(--shadow);
}
#toolbar button {
  border: none; background: transparent; cursor: pointer; color: var(--ink);
  height: 40px; padding: 0 14px; border-radius: 999px;
  font-family: "Inter", sans-serif; font-size: 13.5px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 7px;
  transition: background 0.15s ease, color 0.15s ease;
}
#toolbar button:hover { background: var(--bg); }
#toolbar button.primary { background: var(--ink-strong); color: #fff; }
#toolbar button.primary:hover { background: #000; }
#toolbar .tb-sep { width: 1px; height: 24px; background: var(--line); margin: 0 2px; }
#toolbar .tb-icon { padding: 0; width: 40px; justify-content: center; font-size: 16px; }
#zoom-label {
  font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--ink-soft);
  min-width: 38px; text-align: center; user-select: none;
}

/* ---------- Estado vacío ---------- */
#empty {
  position: fixed; inset: 0; z-index: 500; pointer-events: none;
  display: grid; place-items: center; text-align: center;
}
#empty .empty-card { max-width: 340px; padding: 0 24px; }
#empty h1 {
  font-family: "Fraunces", serif; font-weight: 600; font-size: 27px;
  color: var(--ink-strong); margin-bottom: 10px;
}
#empty p { color: var(--ink-soft); font-size: 14.5px; line-height: 1.6; margin-bottom: 20px; }
#empty button {
  pointer-events: auto; border: none; cursor: pointer;
  background: var(--ink-strong); color: #fff; border-radius: 999px;
  padding: 12px 22px; font-family: "Inter", sans-serif; font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow);
}
#empty button:hover { background: #000; }
#empty.hidden { display: none; }

/* ---------- Encabezado (marca) ---------- */
#brand {
  position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 700;
  font-family: "Fraunces", serif; font-weight: 600; font-size: 15px;
  color: var(--ink-strong); letter-spacing: 0.02em; user-select: none;
  display: flex; align-items: center; gap: 8px; opacity: 0.85;
}
#brand .brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

/* ---------- Toast ---------- */
#toast {
  position: fixed; bottom: 84px; left: 50%; transform: translateX(-50%) translateY(12px);
  z-index: 900; background: var(--ink-strong); color: #fff;
  padding: 10px 18px; border-radius: 999px; font-size: 13px; font-weight: 500;
  box-shadow: var(--shadow-lift); opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

#eximir-volver { z-index: 900; }

@media (max-width: 560px) {
  #toolbar button span.lbl { display: none; }
  #toolbar button { padding: 0 12px; }
  #brand { display: none; }
}