/* Deejay Academy Campus
   Concepto: la cabina. Fondo grafito, superficies como decks, el naranja del botón CUE
   como acento y el verde del PLAY para lo completado. Los códigos de lección y los
   tiempos van en mono, como la pantalla de un CDJ. */
:root {
  --ink: #0e1015;
  --deck: #161a22;
  --deck-2: #1c212b;
  --rail: #2a313d;
  --text: #eceef3;
  --mute: #8d95a6;
  --cue: #ff8a1f;
  --cue-ink: #1a0f02;
  --play: #3ad37e;
  --hot: #ff5468;
  --focus: #ffd29a;

  --f-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --r: 10px;
  --gap: 20px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--ink);
  color: var(--text);
  font: 15px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: var(--cue); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--f-display); font-stretch: 112%; line-height: 1.15; margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 800; }
h2 { font-size: 1.25rem; font-weight: 700; }
h3 { font-size: 1.02rem; font-weight: 700; }
p { margin: 0; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.mute { color: var(--mute); }
.eyebrow { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mute); }
.wrap { max-width: 1180px; margin: 0 auto; padding-inline: max(20px, env(safe-area-inset-left, 0px)); }
.stack { display: grid; gap: var(--gap); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
[hidden] { display: none !important; }

/* ---------- Barra superior ---------- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--ink) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rail); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-family: var(--f-display); font-weight: 800; font-stretch: 125%; letter-spacing: .02em; font-size: .95rem; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand .disc { width: 26px; height: 26px; border-radius: 50%; background: radial-gradient(circle, var(--cue) 0 3px, var(--ink) 3.5px 5px, #2b2f38 5.5px 100%); box-shadow: inset 0 0 0 1px #3a404c; flex: none; }
.brand small { font-family: var(--f-mono); font-weight: 500; font-stretch: 100%; color: var(--mute); font-size: .7rem; letter-spacing: .14em; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { color: var(--mute); padding: 8px 12px; border-radius: 8px; font-weight: 600; font-size: .92rem; }
.nav a:hover { color: var(--text); text-decoration: none; background: var(--deck); }
.nav a.on { color: var(--text); background: var(--deck-2); }
.me { display: flex; align-items: center; gap: 10px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--deck-2); border: 1px solid var(--rail); font: 700 .75rem var(--f-mono); color: var(--text); }
.me a.out { color: var(--mute); font-size: .85rem; }
@media (max-width: 720px) {
  .top .wrap { gap: 12px; height: auto; padding-block: 10px; flex-wrap: wrap; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  .brand small { display: none; }
}

main { padding-block: 36px 80px; }

/* ---------- Botones y formularios ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--rail); background: var(--deck-2); color: var(--text); font: 600 .92rem var(--f-body); padding: 10px 16px; border-radius: 8px; cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: #3a4352; text-decoration: none; }
.btn.cue { background: var(--cue); border-color: var(--cue); color: var(--cue-ink); }
.btn.cue:hover { filter: brightness(1.08); }
.btn.play { background: transparent; border-color: var(--play); color: var(--play); }
.btn.ghost { background: transparent; }
.btn.danger { background: transparent; border-color: color-mix(in srgb, var(--hot) 50%, var(--rail)); color: var(--hot); }
.btn.sm { padding: 6px 10px; font-size: .82rem; }
.btn.icon { padding: 6px 9px; font-family: var(--f-mono); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
label { display: grid; gap: 6px; font-size: .85rem; font-weight: 600; color: var(--mute); }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=search], select, textarea {
  width: 100%; background: var(--ink); color: var(--text); border: 1px solid var(--rail); border-radius: 8px; padding: 10px 12px; font: 400 .95rem var(--f-body);
}
textarea { min-height: 120px; resize: vertical; line-height: 1.55; }
textarea.code { font-family: var(--f-mono); font-size: .86rem; min-height: 260px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--cue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--cue) 22%, transparent); }
.check { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 500; font-size: .92rem; }
.check input { width: 18px; height: 18px; accent-color: var(--cue); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .grid2, .grid3 { grid-template-columns: 1fr; } }
.help { font-size: .8rem; color: var(--mute); font-weight: 400; }

/* ---------- Superficies ---------- */
.panel { background: var(--deck); border: 1px solid var(--rail); border-radius: var(--r); padding: 22px; min-width: 0; }
.panel > h2 + * { margin-top: 14px; }
.flash { padding: 12px 16px; border-radius: 8px; border: 1px solid; font-weight: 500; }
.flash.ok { border-color: color-mix(in srgb, var(--play) 45%, transparent); background: color-mix(in srgb, var(--play) 10%, var(--deck)); }
.flash.err { border-color: color-mix(in srgb, var(--hot) 45%, transparent); background: color-mix(in srgb, var(--hot) 10%, var(--deck)); }
.pill { display: inline-flex; align-items: center; gap: 6px; font: 600 .72rem var(--f-mono); letter-spacing: .06em; text-transform: uppercase; padding: 3px 8px; border-radius: 99px; border: 1px solid var(--rail); color: var(--mute); white-space: nowrap; }
.pill.on { color: var(--play); border-color: color-mix(in srgb, var(--play) 45%, transparent); }
.pill.cue { color: var(--cue); border-color: color-mix(in srgb, var(--cue) 45%, transparent); }
.pill.off { color: var(--mute); }
.led { width: 8px; height: 8px; border-radius: 50%; background: #3a404c; flex: none; }
.led.on { background: var(--play); box-shadow: 0 0 8px color-mix(in srgb, var(--play) 70%, transparent); }
.led.cue { background: var(--cue); box-shadow: 0 0 8px color-mix(in srgb, var(--cue) 70%, transparent); }

/* ---------- Barra de progreso tipo "overview" de CDJ: un segmento por lección ---------- */
.overview { display: flex; gap: 3px; height: 26px; align-items: flex-end; }
.overview i { flex: 1; min-width: 2px; border-radius: 2px; background: #2c3340; height: var(--h, 60%); }
.overview i.done { background: var(--play); }
.overview i.now { background: var(--cue); }
.overview.big { height: 46px; gap: 4px; }

/* ---------- Mis cursos ---------- */
.hello { display: grid; gap: 8px; margin-bottom: 28px; }
.courses { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--gap); }
.ccard { background: var(--deck); border: 1px solid var(--rail); border-radius: 14px; padding: 24px; display: grid; gap: 18px; color: var(--text); position: relative; overflow: hidden; }
.ccard:hover { text-decoration: none; border-color: #3a4352; }
.ccard .kind { position: absolute; right: -30px; top: -30px; width: 140px; height: 140px; border-radius: 50%;
  background: repeating-radial-gradient(circle, #1f2530 0 2px, #181c24 2px 4px); opacity: .9; }
.ccard .kind::after { content: ""; position: absolute; inset: 56px; border-radius: 50%; background: var(--cue); }
.ccard h2 { font-size: 1.45rem; position: relative; max-width: 80%; }
.ccard .meta { display: flex; gap: 14px; font-family: var(--f-mono); font-size: .8rem; color: var(--mute); }
.empty { text-align: center; padding: 60px 20px; border: 1px dashed var(--rail); border-radius: 14px; color: var(--mute); display: grid; gap: 10px; justify-items: center; }

/* ---------- Página de curso ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 32px; align-items: end; margin-bottom: 36px; }
.hero .lead { color: #c5cad5; font-size: 1.05rem; max-width: 60ch; }
.hero .card { background: var(--deck); border: 1px solid var(--rail); border-radius: 14px; padding: 22px; display: grid; gap: 14px; }
.big-num { font: 800 2.6rem/1 var(--f-display); font-stretch: 125%; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.level { margin-bottom: 28px; }
.level-head { display: flex; gap: 14px; align-items: baseline; justify-content: space-between; padding-bottom: 12px; border-bottom: 1px solid var(--rail); margin-bottom: 6px; flex-wrap: wrap; }
.lessons { list-style: none; margin: 0; padding: 0; }
.lessons a { display: grid; grid-template-columns: 14px 52px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 13px 10px; border-radius: 8px; color: var(--text); }
.lessons a:hover { background: var(--deck); text-decoration: none; }
.lessons .code { font-family: var(--f-mono); color: var(--mute); font-size: .85rem; }
.lessons .dur { font-family: var(--f-mono); color: var(--mute); font-size: .8rem; }
.lessons .t { min-width: 0; }
.cta { margin-top: 36px; border-radius: 14px; padding: 28px; border: 1px solid color-mix(in srgb, var(--cue) 40%, var(--rail));
  background: linear-gradient(120deg, color-mix(in srgb, var(--cue) 14%, var(--deck)), var(--deck) 60%); display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 20px; align-items: center; }
@media (max-width: 720px) { .cta { grid-template-columns: 1fr; } }

/* ---------- Lección ---------- */
.player-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 28px; align-items: start; }
@media (max-width: 980px) { .player-layout { grid-template-columns: 1fr; } }
.crumbs { font-size: .85rem; color: var(--mute); margin-bottom: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--mute); }
.screen { position: relative; aspect-ratio: 16 / 9; max-width: 100%; background: #07080b; border: 1px solid var(--rail); border-radius: 12px; overflow: hidden; }
.screen iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.screen .soon { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; gap: 10px; padding: 20px;
  background: repeating-linear-gradient(90deg, #0b0d11 0 6px, #0d1015 6px 12px); color: var(--mute); }
.screen .soon .disc { width: 70px; height: 70px; margin: 0 auto; border-radius: 50%; background: repeating-radial-gradient(circle, #20252f 0 2px, #15181f 2px 4px); position: relative; animation: spin 4s linear infinite; }
.screen .soon .disc::after { content: ""; position: absolute; inset: 27px; border-radius: 50%; background: var(--cue); }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .screen .soon .disc { animation: none; } }
.lesson-head { margin: 22px 0 18px; display: grid; gap: 10px; }
.objective { border-left: 3px solid var(--cue); padding: 4px 0 4px 14px; color: #d3d7e0; }
.prose { color: #d6d9e1; max-width: 72ch; }
.prose h3, .prose h4 { margin: 22px 0 8px; font-family: var(--f-display); }
.prose p, .prose ul, .prose ol, .prose blockquote { margin: 0 0 12px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose blockquote { background: var(--deck); border: 1px solid var(--rail); border-radius: 8px; padding: 12px 14px; color: var(--text); }
.prose code { font-family: var(--f-mono); font-size: .88em; background: var(--deck-2); padding: 1px 5px; border-radius: 4px; }
.exercise { margin-top: 22px; background: var(--deck); border: 1px solid var(--rail); border-radius: 12px; padding: 18px 20px; display: grid; gap: 8px; }
.files { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.files a { display: flex; justify-content: space-between; gap: 10px; padding: 11px 14px; border: 1px solid var(--rail); border-radius: 8px; background: var(--deck); color: var(--text); }
.files a:hover { border-color: var(--cue); text-decoration: none; }
.stepper { display: flex; gap: 10px; justify-content: space-between; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--rail); flex-wrap: wrap; }
.side { position: sticky; top: 84px; background: var(--deck); border: 1px solid var(--rail); border-radius: 12px; overflow: hidden; }
.side-head { padding: 16px 18px; border-bottom: 1px solid var(--rail); display: grid; gap: 10px; }
.side-list { max-height: calc(100vh - 230px); overflow-y: auto; padding: 6px; }
.side-list .lvl { font: 600 .7rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--mute); padding: 12px 10px 6px; }
.side-list a { display: grid; grid-template-columns: 10px 38px minmax(0,1fr); gap: 10px; align-items: center; padding: 8px 10px; border-radius: 6px; color: #c9cdd6; font-size: .88rem; line-height: 1.35; }
.side-list a:hover { background: var(--deck-2); text-decoration: none; }
.side-list a.cur { background: var(--deck-2); color: var(--text); box-shadow: inset 2px 0 0 var(--cue); }
.side-list .code { font-family: var(--f-mono); font-size: .78rem; color: var(--mute); }
@media (max-width: 980px) { .side { position: static; } .side-list { max-height: none; } }

/* ---------- Login ---------- */
.auth { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); }
.auth-art { position: relative; overflow: hidden; background: #0a0b0f; border-right: 1px solid var(--rail); display: grid; align-content: end; padding: 48px; gap: 14px; }
.auth-art canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.auth-art > *:not(canvas) { position: relative; }
.auth-art h1 { font-size: clamp(2rem, 4.4vw, 3.6rem); font-stretch: 125%; max-width: 12ch; }
.auth-art p { color: #c5cad5; max-width: 42ch; }
.auth-form { display: grid; place-items: center; padding: 40px max(24px, env(safe-area-inset-right, 0px)) 40px max(24px, env(safe-area-inset-left, 0px)); }
.auth-form form { width: 100%; max-width: 380px; display: grid; gap: 18px; }
@media (max-width: 860px) { .auth { grid-template-columns: 1fr; } .auth-art { min-height: 300px; padding: 28px; } }

/* ---------- Admin ---------- */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.kpi { background: var(--deck); border: 1px solid var(--rail); border-radius: var(--r); padding: 18px; display: grid; gap: 4px; }
.kpi b { font: 800 2rem/1.1 var(--f-display); font-stretch: 115%; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; border: 1px solid var(--rail); border-radius: var(--r); }
table.t { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.t th { text-align: left; font: 600 .72rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); padding: 12px 14px; background: var(--deck); border-bottom: 1px solid var(--rail); white-space: nowrap; }
table.t td { padding: 12px 14px; border-bottom: 1px solid var(--rail); vertical-align: middle; }
table.t tr:last-child td { border-bottom: 0; }
table.t tr:hover td { background: color-mix(in srgb, var(--deck) 60%, transparent); }
.admin-cols { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; align-items: start; }
@media (max-width: 980px) { .admin-cols { grid-template-columns: 1fr; } }
.mod { border: 1px solid var(--rail); border-radius: var(--r); background: var(--deck); margin-bottom: 18px; }
.mod-head { padding: 14px 16px; border-bottom: 1px solid var(--rail); display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.mod-row { display: grid; grid-template-columns: 52px minmax(0,1fr) auto auto auto; gap: 12px; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--rail); }
.mod-row:last-of-type { border-bottom: 0; }
.mod-row .code { font-family: var(--f-mono); color: var(--mute); font-size: .85rem; }
.mod-row form { margin: 0; }
@media (max-width: 720px) { .mod-row { grid-template-columns: 44px minmax(0,1fr); } .mod-row > :nth-child(n+3) { grid-column: 2; } }
.upload-zone { border: 1.5px dashed var(--rail); border-radius: 12px; padding: 26px; text-align: center; display: grid; gap: 10px; justify-items: center; cursor: pointer; transition: border-color .15s, background .15s; }
.upload-zone:hover, .upload-zone.drag { border-color: var(--cue); background: color-mix(in srgb, var(--cue) 6%, transparent); }
.meter { height: 10px; border-radius: 99px; background: var(--ink); border: 1px solid var(--rail); overflow: hidden; width: 100%; }
.meter span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--play), #b6e94a 70%, var(--cue)); transition: width .2s; }
.creds { border: 1px solid color-mix(in srgb, var(--cue) 50%, var(--rail)); background: color-mix(in srgb, var(--cue) 8%, var(--deck)); border-radius: var(--r); padding: 18px; display: grid; gap: 10px; }
.creds pre { margin: 0; white-space: pre-wrap; font: .9rem/1.6 var(--f-mono); background: var(--ink); border: 1px solid var(--rail); border-radius: 8px; padding: 12px; }
details.danger-zone { border: 1px solid color-mix(in srgb, var(--hot) 35%, var(--rail)); border-radius: var(--r); padding: 14px 16px; }
details.danger-zone summary { cursor: pointer; color: var(--hot); font-weight: 600; }
.tabs-inline { display: flex; gap: 6px; }
.preview-box { border: 1px solid var(--rail); border-radius: 8px; padding: 14px; background: var(--ink); min-height: 120px; }