/* assets/css/style.css - estilos simples y limpios */
:root{
  --bg:#f5f7fb;
  --card:#fff;
  --accent:#5b6cf7;
  --muted:#666;
  --shadow: 0 6px 18px rgba(11,22,50,0.06);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
body{margin:0;background:linear-gradient(120deg,#f8fbff,var(--bg));color:#111;min-height:100vh}
.container{max-width:1100px;margin:28px auto;padding:16px}
.topbar{background:var(--card);padding:18px;border-radius:12px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px}
.topbar h1{margin:0;font-size:20px}
.topbar .subtitle{color:var(--muted);font-size:13px;margin-left:auto}
.back{color:var(--muted);text-decoration:none;padding-right:10px}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:var(--shadow);margin-bottom:16px}
.create-materia input, .create-materia textarea, .editor-topbar input[type="date"], .editor-topbar input[type="text"]{
  width:100%;padding:10px;border-radius:8px;border:1px solid #e6e9f0;margin-bottom:8px;font-size:14px;
}
.create-materia button, .btn{background:var(--accent);color:#fff;padding:8px 12px;border-radius:8px;border:0;cursor:pointer}
.btn{background: #5b6cf7}
.btn.primary{background:#3446f0}
.grid-materias{display:flex;flex-wrap:wrap;gap:12px}
.materia-card{flex:1 1 220px;padding:12px;border-radius:10px;background:linear-gradient(180deg,#fff,#fbfdff);text-decoration:none;color:inherit;border:1px solid #f0f3ff}
.materia-card h3{margin:0 0 6px;font-size:16px}
.lista-hojas{list-style:none;padding:0;margin:0}
.lista-hojas li{border-bottom:1px dashed #eef2ff;padding:10px 0}
.lista-hojas a{display:block;text-decoration:none;color:inherit}
.preview{color:#555;margin:6px 0;font-size:13px}
.meta{color:var(--muted);font-size:12px}
.editor-page .editor-card{position:relative}
.editor-topbar{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.editor-topbar input#title{flex:2;padding:10px}
.editor-topbar input[type="date"]{padding:8px}
.toolbar{display:flex;gap:8px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.toolbar button{padding:6px 8px;border-radius:8px;border:1px solid #e6e9f0;cursor:pointer;background:#fff}
.draw-tools{display:flex;gap:8px;align-items:center}
.editor-area{min-height:380px;border-radius:10px;padding:14px;border:1px dashed #e6e9f0;background:#fff;overflow:auto}
.canvas-wrap{position:relative;margin-top:12px}
#drawCanvas{width:100%;height:240px;border-radius:10px;border:1px solid #e6e9f0;display:none}
.draw-hint{position:absolute;left:12px;top:12px;background:rgba(255,255,255,0.9);padding:6px;border-radius:6px;font-size:13px;display:none}
.draw-controls{position:absolute;right:8px;top:8px}
.save-status{margin-top:10px;color:green;font-weight:600}
@media (max-width:700px){
  .editor-topbar{flex-direction:column;align-items:stretch}
  .toolbar{gap:6px}
  .grid-materias{flex-direction:column}
}