/* Sara IA — estilos. Tokens editables desde Ajustes > Apariencia. Solo CSS simple, sin blur ni efectos pesados. */
:root {
  --primary: #2f4fb8; --secondary: #0f766e; --accent: #d9912b;
  --bg: #f5f6fa; --card: #ffffff; --border: #e2e5ee; --text: #1b2033; --muted: #5d6479;
  --ok: #1f8a4c; --warn: #b7791f; --bad: #c0392b; --info: #2b6cb0;
  --font: system-ui, "Segoe UI", Roboto, sans-serif; --fs: 16px; --radius: 12px;
  --t: .15s;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #11141c; --card: #1a1f2b; --border: #2b3242; --text: #e8eaf2; --muted: #a0a7ba;
  --primary: #7c95ff; --secondary: #3cc4b3; --accent: #f0b35a; color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11141c; --card: #1a1f2b; --border: #2b3242; --text: #e8eaf2; --muted: #a0a7ba;
    --primary: #7c95ff; --secondary: #3cc4b3; --accent: #f0b35a; color-scheme: dark;
  }
}
:root[data-perf="saver"], :root[data-motion="off"] { --t: 0s; }
@media (prefers-reduced-motion: reduce) { :root { --t: 0s; } }

* { box-sizing: border-box; }
html { font-size: var(--fs); }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--primary); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5rem; }
h1 { font-size: 1.6rem; } h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; }
p { margin: 0 0 .75rem; }
small, .muted { color: var(--muted); }
code { background: color-mix(in srgb, var(--primary) 10%, transparent); padding: 0 .3em; border-radius: 4px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--card); padding: .5rem 1rem; z-index: 99; }
.skip:focus { left: 8px; }

/* Layout */
.shell { display: flex; min-height: 100vh; }
.side { width: 240px; flex-shrink: 0; background: var(--card); border-right: 1px solid var(--border); padding: 1rem .75rem; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; gap: .6rem; align-items: center; padding: 0 .4rem 1rem; color: var(--primary); }
.brand b { display: block; font-size: 1.15rem; color: var(--text); }
.brand small { font-size: .68rem; letter-spacing: .02em; }
.logo { width: 34px; height: 34px; flex-shrink: 0; }
nav .group { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 1rem .6rem .3rem; }
nav a { display: flex; align-items: center; gap: .6rem; padding: .45rem .6rem; border-radius: 8px; color: var(--text); text-decoration: none; font-size: .93rem; }
nav a:hover { background: var(--bg); }
nav a[aria-current="page"] { background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--primary); font-weight: 600; }
nav a .tag { margin-left: auto; font-size: .62rem; padding: 0 .35rem; border-radius: 4px; background: var(--bg); color: var(--muted); }
.main-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.top { display: flex; align-items: center; gap: .75rem; padding: .6rem 1.25rem; border-bottom: 1px solid var(--border); background: var(--card); position: sticky; top: 0; z-index: 5; }
.search-btn { flex: 1; max-width: 520px; text-align: left; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: .5rem .8rem; color: var(--muted); font: inherit; cursor: pointer; }
.search-btn kbd { float: right; font-size: .75rem; }
.search-btn { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
main { padding: 1.5rem 1.25rem 3rem; max-width: 1100px; width: 100%; margin: 0 auto; }
main:focus { outline: none; }

/* Estado de red */
.net { margin-left: auto; font-size: .78rem; font-weight: 600; padding: .3rem .7rem; border-radius: 999px; white-space: nowrap; border: 1px solid var(--border); }
.net.online { color: var(--ok); } .net.offline { color: var(--warn); } .net.unstable, .net.checking { color: var(--info); }
.banner { padding: .75rem 1.25rem; background: color-mix(in srgb, var(--warn) 14%, var(--card)); border-bottom: 1px solid var(--border); display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.banner.ok { background: color-mix(in srgb, var(--ok) 12%, var(--card)); }

/* Componentes */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; margin-bottom: 1rem; }
.card h2, .card h3 { margin-bottom: .6rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.tile { display: block; text-decoration: none; color: inherit; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; transition: border-color var(--t); cursor: pointer; text-align: left; font: inherit; width: 100%; }
.tile:hover { border-color: var(--primary); }
.tile .ico { font-size: 1.4rem; }
.tile b { display: block; margin: .3rem 0 .15rem; }
.tile small { display: block; }
.tile.disabled { opacity: .55; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.row.end { justify-content: flex-end; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.stack > * + * { margin-top: .6rem; }
.hr { border: 0; border-top: 1px solid var(--border); margin: 1rem 0; }

button, .btn { font: inherit; font-size: .92rem; border: 1px solid var(--border); background: var(--card); color: var(--text); padding: .45rem .9rem; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: .35rem; }
button:hover, .btn:hover { border-color: var(--primary); }
button.primary, .btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
button.danger { color: var(--bad); }
button.ghost { border-color: transparent; background: transparent; }
button:disabled { opacity: .5; cursor: not-allowed; }
.icon-btn { padding: .35rem .6rem; }
.chip { display: inline-block; padding: .1rem .55rem; border-radius: 999px; font-size: .75rem; border: 1px solid var(--border); background: var(--bg); }
.chip.safe { color: var(--ok); } .chip.limited { color: var(--warn); } .chip.blocked { color: var(--bad); } .chip.online { color: var(--info); }
.tabs { display: flex; gap: .25rem; flex-wrap: wrap; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: .5rem .8rem; }
.tabs button[aria-selected="true"] { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }

label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .2rem; }
input, select, textarea { font: inherit; width: 100%; padding: .5rem .65rem; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); }
textarea { min-height: 90px; resize: vertical; }
input[type=checkbox], input[type=radio], input[type=color] { width: auto; }
input[type=color] { padding: 0; height: 2.2rem; width: 3rem; }
.field { margin-bottom: .75rem; }
.fields { display: grid; gap: 0 1rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.help { font-size: .78rem; color: var(--muted); font-weight: 400; }

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.table-wrap { overflow-x: auto; }
.result { background: color-mix(in srgb, var(--secondary) 9%, var(--card)); border: 1px solid color-mix(in srgb, var(--secondary) 35%, var(--border)); border-radius: 10px; padding: .8rem 1rem; margin-top: .75rem; }
.result .big { font-size: 1.5rem; font-weight: 700; color: var(--secondary); }
.kpi { font-size: 1.8rem; font-weight: 700; }
.progress { height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden; border: 1px solid var(--border); }
.progress > i { display: block; height: 100%; background: var(--secondary); }
.list-item { padding: .6rem 0; border-bottom: 1px solid var(--border); }
.list-item:last-child { border-bottom: 0; }
details { border: 1px solid var(--border); border-radius: 10px; padding: .6rem .9rem; margin-bottom: .5rem; background: var(--card); }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: .5rem; }
.notice { border-left: 4px solid var(--warn); padding: .6rem .9rem; background: color-mix(in srgb, var(--warn) 8%, var(--card)); border-radius: 6px; margin-bottom: 1rem; }
.notice.ok { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 8%, var(--card)); }
.notice.bad { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 8%, var(--card)); }
.notice.info { border-color: var(--info); background: color-mix(in srgb, var(--info) 8%, var(--card)); }

/* Chat */
.chat { display: flex; flex-direction: column; height: calc(100vh - 170px); min-height: 420px; }
.msgs { flex: 1; overflow-y: auto; padding: .5rem 0; }
.msg { max-width: 85%; margin: .4rem 0; padding: .65rem .9rem; border-radius: 12px; border: 1px solid var(--border); background: var(--card); }
.msg.user { margin-left: auto; background: color-mix(in srgb, var(--primary) 12%, var(--card)); }
.msg .meta { font-size: .72rem; color: var(--muted); margin-top: .35rem; }
.msg ul { margin: .3rem 0; padding-left: 1.2rem; }
.composer { display: flex; gap: .5rem; align-items: flex-end; border-top: 1px solid var(--border); padding-top: .6rem; }
.composer textarea { min-height: 48px; max-height: 180px; }

/* Flashcards */
.flash { min-height: 180px; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 1.15rem; cursor: pointer; }
.incogrid td.v { background: color-mix(in srgb, var(--primary) 18%, transparent); text-align: center; }
.incogrid td.c { background: color-mix(in srgb, var(--accent) 22%, transparent); text-align: center; }
.incogrid td.risk { box-shadow: inset 3px 0 0 var(--bad); }

/* Paleta y modal */
.palette, .modal { position: fixed; inset: 0; background: rgb(0 0 0 / .45); display: flex; align-items: flex-start; justify-content: center; padding: 10vh 1rem 1rem; z-index: 50; }
.palette[hidden], .modal[hidden] { display: none; }
.palette-box, .modal-box { background: var(--card); border: 1px solid var(--border); border-radius: 14px; width: 100%; max-width: 620px; max-height: 75vh; overflow: auto; padding: .75rem; }
.palette-box input { font-size: 1.05rem; }
#paletteList { list-style: none; margin: .5rem 0 0; padding: 0; }
#paletteList li { padding: .5rem .7rem; border-radius: 8px; cursor: pointer; display: flex; justify-content: space-between; gap: 1rem; }
#paletteList li[aria-selected="true"], #paletteList li:hover { background: color-mix(in srgb, var(--primary) 12%, transparent); }
#paletteList small { white-space: nowrap; }
.toasts { position: fixed; bottom: 1rem; right: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 60; }
.toast { background: var(--text); color: var(--bg); padding: .6rem 1rem; border-radius: 8px; font-size: .9rem; max-width: 340px; }
.toast.bad { background: var(--bad); color: #fff; }

/* Mascota */
.mascot { width: 64px; height: 64px; flex-shrink: 0; }
.mascot .eye { transform-origin: center; }
:root:not([data-perf="saver"]) .mascot.thinking .ring { animation: spin 3s linear infinite; transform-origin: 32px 32px; }
@keyframes spin { to { transform: rotate(360deg); } }

.only-mobile { display: none; }
@media (max-width: 800px) {
  .only-mobile { display: inline-flex; }
  .side { position: fixed; left: 0; top: 0; z-index: 40; transform: translateX(-100%); transition: transform var(--t); box-shadow: 0 0 0 100vmax transparent; }
  .side.open { transform: none; box-shadow: 0 0 0 100vmax rgb(0 0 0 / .4); }
  .top { padding: .5rem 1rem; }
  .search-btn kbd { display: none; }
  main { padding: 1rem 1rem 3rem; }
  .msg { max-width: 95%; }
}
@media print {
  .side, .top, .banner, .no-print { display: none !important; }
  main { padding: 0; max-width: none; }
  .card { border: 0; padding: 0; }
  body { background: #fff; color: #000; }
}
.hero { background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 10%, var(--card)), var(--card) 60%); }
.hero h1 { font-size: 1.45rem; }
.msg .convert button { font-size: .75rem; padding: .15rem .45rem; }
label.help { display: inline-flex; align-items: center; gap: .35rem; margin: 0; }
label.help select, label.help input[type=number] { width: auto; padding: .2rem .4rem; }