:root {
  --dms-night: #1A0740;
  --dms-deep: #240A54;
  --dms-primary: #53378A;
  --dms-primary-hover: #432B73;
  --dms-lila: #ABAAFD;
  --dms-tint: #EFEDFB;
  --dms-bg: #F6F5FB;
  --dms-card: #FFFFFF;
  --dms-line: #E7E4F2;
  --dms-text: #1E1B2E;
  --dms-muted: #706C86;
  --dms-ok: #1F9D6B;
  --dms-warn: #C98A12;
  --dms-danger: #D1435B;
  --bs-primary: #53378A;
  --bs-primary-rgb: 83, 55, 138;
  --bs-body-font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --bs-body-color: var(--dms-text);
  --bs-link-color: var(--dms-primary);
  --bs-border-radius: .65rem;
}
body { background: var(--dms-bg); color: var(--dms-text); font-size: .94rem; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, h5 { letter-spacing: -.015em; font-weight: 650; color: var(--dms-deep); }
.text-muted { color: var(--dms-muted) !important; }
a { text-decoration: none; }

/* Botones */
.btn { font-weight: 550; border-radius: .6rem; }
.btn-primary { --bs-btn-bg: var(--dms-primary); --bs-btn-border-color: var(--dms-primary); --bs-btn-hover-bg: var(--dms-primary-hover); --bs-btn-hover-border-color: var(--dms-primary-hover); --bs-btn-active-bg: var(--dms-deep); --bs-btn-active-border-color: var(--dms-deep); --bs-btn-disabled-bg: var(--dms-primary); --bs-btn-disabled-border-color: var(--dms-primary); }
.btn-outline-primary { --bs-btn-color: var(--dms-primary); --bs-btn-border-color: #cfc8e6; --bs-btn-hover-bg: var(--dms-primary); --bs-btn-hover-border-color: var(--dms-primary); --bs-btn-active-bg: var(--dms-primary); }
.btn-soft { background: var(--dms-tint); color: var(--dms-primary); border: 0; }
.btn-soft:hover { background: #E3DFF7; color: var(--dms-deep); }
.form-control, .form-select { border-color: #d9d5ea; padding: .6rem .8rem; }
.form-control:focus, .form-select:focus { border-color: var(--dms-primary); box-shadow: 0 0 0 .2rem rgba(83, 55, 138, .14); }
.form-label { font-weight: 550; font-size: .84rem; color: #3b3653; margin-bottom: .3rem; }
.form-text { color: var(--dms-muted); }
.form-check-input:checked { background-color: var(--dms-primary); border-color: var(--dms-primary); }

/* Tarjetas */
.card-soft { background: var(--dms-card); border: 1px solid var(--dms-line); border-radius: 1rem; box-shadow: 0 1px 2px rgba(36, 10, 84, .04); }
.card-soft .card-head { padding: 1rem 1.25rem; border-bottom: 1px solid var(--dms-line); display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.card-soft .card-head h5, .card-soft .card-head h6 { margin: 0; }
.card-soft .card-body-pad { padding: 1.25rem; }
.stat { padding: 1.15rem 1.25rem; }
.stat .num { font-size: 1.9rem; font-weight: 700; color: var(--dms-deep); line-height: 1.1; }
.stat .lbl { color: var(--dms-muted); font-size: .82rem; }
.stat .ico { width: 42px; height: 42px; border-radius: 12px; background: var(--dms-tint); color: var(--dms-primary); display: grid; place-items: center; font-size: 1.2rem; }

/* Tablas */
.table { --bs-table-bg: transparent; margin: 0; }
.table > :not(caption) > * > * { padding: .8rem 1.1rem; border-color: var(--dms-line); vertical-align: middle; }
.table thead th { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--dms-muted); font-weight: 600; background: #FBFAFE; }
.table-hover > tbody > tr:hover > * { background: #FAF9FE; }
.badge-soft { padding: .35em .65em; border-radius: 2rem; font-weight: 600; font-size: .72rem; }
.badge-ok { background: #E3F6EE; color: #157A52; }
.badge-warn { background: #FBF0D9; color: #96660A; }
.badge-off { background: #EEECF4; color: #6B6780; }
.badge-brand { background: var(--dms-tint); color: var(--dms-primary); }
.badge-danger { background: #FBE6EA; color: #B02E47; }

/* Shell admin */
.shell { display: flex; min-height: 100vh; }
.sidebar { width: 252px; flex: 0 0 252px; background: linear-gradient(180deg, var(--dms-deep), var(--dms-night)); color: #fff; padding: 1.25rem .9rem; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: .7rem; padding: .25rem .6rem 1.4rem; color: #fff; }
.brand img { width: 34px; height: 34px; }
.brand b { font-size: 1.02rem; letter-spacing: -.01em; line-height: 1.1; display: block; }
.brand small { color: var(--dms-lila); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.side-label { font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .42); padding: 1rem .75rem .4rem; }
.side-link { display: flex; align-items: center; gap: .75rem; padding: .62rem .8rem; border-radius: .65rem; color: rgba(255, 255, 255, .72); font-weight: 500; margin-bottom: 2px; transition: .15s; }
.side-link i { font-size: 1.08rem; }
.side-link:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.side-link.active { background: rgba(171, 170, 253, .18); color: #fff; box-shadow: inset 3px 0 0 var(--dms-lila); }
.side-foot { margin-top: auto; border-top: 1px solid rgba(255, 255, 255, .1); padding-top: .9rem; font-size: .82rem; color: rgba(255, 255, 255, .7); }
.content { flex: 1; min-width: 0; }
.topbar-admin { display: none; }
.page { padding: 2rem 2.25rem 3rem; max-width: 1280px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.page-head h1 { font-size: 1.55rem; margin: 0; }
.page-head p { margin: .2rem 0 0; color: var(--dms-muted); }
@media (max-width: 991px) {
  .shell { display: block; }
  .sidebar { position: fixed; z-index: 1040; left: -270px; transition: left .2s; box-shadow: 0 0 40px rgba(0, 0, 0, .3); }
  .sidebar.open { left: 0; }
  .topbar-admin { display: flex; align-items: center; gap: .75rem; background: var(--dms-deep); color: #fff; padding: .7rem 1rem; position: sticky; top: 0; z-index: 1030; }
  .topbar-admin button { background: none; border: 0; color: #fff; font-size: 1.5rem; }
  .page { padding: 1.25rem 1rem 2.5rem; }
}

/* Topbar alumno */
.topnav { background: #fff; border-bottom: 1px solid var(--dms-line); position: sticky; top: 0; z-index: 1030; }
.topnav .inner { max-width: 1240px; margin: 0 auto; padding: .7rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.topnav .brand { padding: 0; color: var(--dms-deep); }
.topnav .brand small { color: var(--dms-primary); }
.wrap { max-width: 1240px; margin: 0 auto; padding: 2rem 1.25rem 3.5rem; }

/* Cursos */
.course-card { overflow: hidden; display: flex; flex-direction: column; height: 100%; transition: .18s; color: inherit; }
.course-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(36, 10, 84, .12); color: inherit; }
.cover { aspect-ratio: 16/9; background: linear-gradient(135deg, var(--dms-deep), var(--dms-primary)); position: relative; display: grid; place-items: center; overflow: hidden; }
.cover img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cover img.cover-mark { width: 64px; opacity: .9; }
.cover::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 80% 0, rgba(171, 170, 253, .35), transparent 55%); pointer-events: none; }
.progress { height: 6px; background: var(--dms-tint); border-radius: 8px; }
.progress-bar { background: linear-gradient(90deg, var(--dms-primary), var(--dms-lila)); border-radius: 8px; }

/* Reproductor */
.player-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 1.5rem; align-items: start; }
@media (max-width: 991px) { .player-grid { grid-template-columns: 1fr; } }
.video-frame { aspect-ratio: 16/9; background: #0d0620; border-radius: 1rem; overflow: hidden; box-shadow: 0 12px 34px rgba(36, 10, 84, .22); }
.video-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.video-empty { height: 100%; display: grid; place-items: center; color: rgba(255, 255, 255, .6); }
.syllabus { position: sticky; top: 76px; max-height: calc(100vh - 100px); overflow: auto; }
.syl-mod { padding: .8rem 1.1rem .4rem; font-size: .72rem; text-transform: uppercase; letter-spacing: .07em; color: var(--dms-muted); font-weight: 650; background: #FBFAFE; border-top: 1px solid var(--dms-line); }
.syl-item { display: flex; gap: .7rem; align-items: center; padding: .65rem 1.1rem; color: var(--dms-text); border-top: 1px solid var(--dms-line); font-size: .88rem; }
.syl-item:hover { background: #FAF9FE; color: var(--dms-text); }
.syl-item.active { background: var(--dms-tint); font-weight: 600; box-shadow: inset 3px 0 0 var(--dms-primary); }
.syl-item .dot { width: 20px; height: 20px; border-radius: 50%; border: 2px solid #cfc9e4; flex: 0 0 20px; display: grid; place-items: center; font-size: .7rem; color: #fff; }
.syl-item .dot.done { background: var(--dms-ok); border-color: var(--dms-ok); }
.material { display: flex; align-items: center; gap: .85rem; padding: .8rem 1rem; border: 1px solid var(--dms-line); border-radius: .75rem; color: var(--dms-text); background: #fff; }
.material:hover { border-color: var(--dms-lila); background: #FAF9FE; color: var(--dms-text); }
.material .mi { width: 38px; height: 38px; border-radius: 10px; background: var(--dms-tint); color: var(--dms-primary); display: grid; place-items: center; font-size: 1.1rem; }

/* Admin: árbol de curso */
.mod-block { border: 1px solid var(--dms-line); border-radius: 1rem; background: #fff; margin-bottom: 1rem; overflow: hidden; }
.mod-head { padding: .9rem 1.1rem; background: #FBFAFE; display: flex; align-items: center; gap: .75rem; justify-content: space-between; }
.cap-row { padding: .7rem 1.1rem; border-top: 1px solid var(--dms-line); display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.icon-btn { width: 32px; height: 32px; display: inline-grid; place-items: center; border-radius: 8px; border: 0; background: transparent; color: var(--dms-muted); }
.icon-btn:hover { background: var(--dms-tint); color: var(--dms-primary); }
.icon-btn.danger:hover { background: #FBE6EA; color: var(--dms-danger); }

/* Login / público */
.auth-bg { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; background: radial-gradient(900px 500px at 10% 0%, rgba(171, 170, 253, .28), transparent 60%), radial-gradient(800px 500px at 100% 100%, rgba(83, 55, 138, .25), transparent 60%), var(--dms-bg); }
.auth-card { width: 100%; max-width: 430px; background: #fff; border: 1px solid var(--dms-line); border-radius: 1.25rem; padding: 2.25rem 2rem; box-shadow: 0 24px 60px rgba(36, 10, 84, .12); }
.auth-card .logo { display: flex; align-items: center; gap: .7rem; justify-content: center; margin-bottom: 1.5rem; }
.auth-card .logo img { width: 44px; height: 44px; }
.auth-card .logo b { font-size: 1.25rem; color: var(--dms-deep); letter-spacing: -.02em; }
.cred-box { background: var(--dms-tint); border-radius: .8rem; padding: 1rem 1.2rem; font-family: Consolas, 'Courier New', monospace; }

/* Sorteo en vivo */
.stage { min-height: 100vh; background: radial-gradient(1000px 600px at 50% -10%, rgba(171, 170, 253, .25), transparent 60%), linear-gradient(160deg, var(--dms-night), var(--dms-deep) 55%, #3a1c78); color: #fff; display: flex; flex-direction: column; position: relative; overflow: hidden; }
.stage h1, .stage h2, .stage h3 { color: #fff; }
.stage-top { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 2rem; position: relative; z-index: 3; }
.stage-top .brand { padding: 0; }
.stage-main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 1rem 1.5rem 3rem; position: relative; z-index: 3; }
.stage .eyebrow { letter-spacing: .22em; text-transform: uppercase; color: var(--dms-lila); font-size: .8rem; font-weight: 600; }
.countdown { font-size: clamp(4rem, 14vw, 9.5rem); font-weight: 700; letter-spacing: -.04em; font-variant-numeric: tabular-nums; line-height: 1; margin: .4rem 0; }
.countdown.ended { color: var(--dms-lila); }
.pcount { font-size: 1.15rem; color: rgba(255, 255, 255, .8); }
.pcount b { font-size: 2.3rem; color: #fff; margin-right: .35rem; }
.btn-draw { background: #fff; color: var(--dms-deep); font-weight: 700; font-size: 1.35rem; padding: 1rem 3rem; border-radius: 3rem; border: 0; box-shadow: 0 10px 40px rgba(171, 170, 253, .45); transition: .2s; }
.btn-draw:hover:not(:disabled) { transform: scale(1.05); box-shadow: 0 14px 54px rgba(171, 170, 253, .7); }
.btn-draw:disabled { opacity: .5; }
.btn-ghost { background: rgba(255, 255, 255, .1); color: #fff; border: 1px solid rgba(255, 255, 255, .25); }
.btn-ghost:hover { background: rgba(255, 255, 255, .2); color: #fff; }
.reel { font-size: clamp(2rem, 6vw, 4.2rem); font-weight: 700; min-height: 1.3em; letter-spacing: -.02em; }
.reel.rolling { color: var(--dms-lila); filter: blur(.6px); }
.winner-card { background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .25); backdrop-filter: blur(8px); border-radius: 1.5rem; padding: 2rem 3rem; animation: pop .6s cubic-bezier(.2, 1.4, .4, 1); margin: .6rem; min-width: min(560px, 90vw); }
.winner-card .trophy { font-size: 3rem; color: #FFD66B; }
.winner-card .wname { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 750; letter-spacing: -.02em; line-height: 1.1; }
.winner-card .wmeta { color: rgba(255, 255, 255, .75); margin-top: .5rem; }
@keyframes pop { 0% { transform: scale(.4); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
#confetti-canvas { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 2; }
.stage .glow { position: absolute; width: 520px; height: 520px; border-radius: 50%; background: var(--dms-primary); filter: blur(140px); opacity: .35; left: -120px; bottom: -160px; }

.link-copy { background: var(--dms-tint); border-radius: .7rem; padding: .55rem .8rem; font-family: Consolas, monospace; font-size: .84rem; word-break: break-all; }
.empty { text-align: center; padding: 3rem 1rem; color: var(--dms-muted); }
.empty i { font-size: 2.4rem; color: var(--dms-lila); display: block; margin-bottom: .6rem; }
.alert { border-radius: .8rem; border: 0; }

.winner-card.compact { padding: 1.1rem 2rem; min-width: min(460px, 90vw); }
.winner-card.compact .trophy { font-size: 2rem; }
.winner-card.compact .wname { font-size: clamp(1.5rem, 3.4vw, 2.3rem); }