/* Área de Alumnos — estilos públicos (todo bajo .aa-app para no chocar con el tema) */
.aa-app {
	--aa-accent: #4f46e5;
	--aa-text: #1e293b;
	--aa-muted: #64748b;
	--aa-border: #e2e8f0;
	--aa-card: #ffffff;
	--aa-soft: #f8fafc;
	--aa-radius: 18px;
	--aa-shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px -12px rgba(15, 23, 42, .18);
	--aa-shadow-hover: 0 2px 4px rgba(15, 23, 42, .08), 0 18px 36px -14px rgba(15, 23, 42, .28);
	max-width: 1120px;
	margin: 0 auto;
	padding: 8px 16px 40px;
	color: var(--aa-text);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	line-height: 1.55;
	box-sizing: border-box;
}
.aa-app *, .aa-app *::before, .aa-app *::after { box-sizing: border-box; }
.aa-app [hidden] { display: none !important; }
.aa-app a { text-decoration: none; box-shadow: none; }
.aa-app h1, .aa-app h2, .aa-app h3, .aa-app p { margin: 0; }
.aa-scope { --c: var(--aa-accent); }

/* ---------- Cabecera ---------- */
.aa-hero {
	position: relative;
	overflow: hidden;
	margin: 8px 0 24px;
	padding: 32px 32px 30px;
	border-radius: 24px;
	color: #fff;
	background-color: var(--c, var(--aa-accent));
	background-image:
		radial-gradient(circle at 92% -10%, rgba(255, 255, 255, .32), transparent 45%),
		radial-gradient(circle at 0% 120%, rgba(0, 0, 0, .28), transparent 55%);
}
.aa-hero--home { --c: var(--aa-accent); padding: 44px 36px; }
.aa-hero--slim { padding: 16px 22px; margin-bottom: 20px; border-radius: 16px; }
.aa-hero__row { display: flex; align-items: center; gap: 18px; }
.aa-hero__icon {
	flex: none; display: grid; place-items: center;
	width: 68px; height: 68px; font-size: 36px; line-height: 1;
	background: rgba(255, 255, 255, .2); border-radius: 20px;
	backdrop-filter: blur(4px);
}
.aa-hero__hi { font-size: 15px; opacity: .9; margin-bottom: 4px !important; }
.aa-hero__title { font-size: clamp(26px, 4.2vw, 40px); line-height: 1.15; font-weight: 800; color: #fff; letter-spacing: -.02em; }
.aa-hero__sub { margin-top: 8px !important; font-size: clamp(15px, 2vw, 17px); opacity: .92; max-width: 60ch; }

.aa-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 14px; font-size: 14px; color: rgba(255, 255, 255, .85); }
.aa-hero--slim .aa-crumbs { margin: 0; }
.aa-crumbs a { color: #fff; opacity: .85; }
.aa-crumbs a:hover { opacity: 1; text-decoration: underline; }
.aa-crumbs i { font-style: normal; opacity: .6; }
.aa-crumbs span { font-weight: 600; color: #fff; }

/* ---------- Buscador ---------- */
.aa-search {
	display: flex; align-items: center; gap: 10px;
	margin: 0 0 22px; padding: 0 16px;
	background: var(--aa-card); border: 1px solid var(--aa-border);
	border-radius: 999px; box-shadow: var(--aa-shadow);
	max-width: 520px;
}
.aa-search:focus-within { border-color: var(--c, var(--aa-accent)); box-shadow: 0 0 0 3px rgba(79, 70, 229, .15); }
.aa-search input {
	flex: 1; min-width: 0; border: 0 !important; outline: 0 !important; box-shadow: none !important;
	background: transparent !important; padding: 13px 0 !important; font-size: 16px; color: var(--aa-text);
}

/* ---------- Tarjetas (categorías / temas) ---------- */
.aa-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; margin-bottom: 28px; }
.aa-card {
	--c: var(--aa-accent);
	position: relative; display: flex; flex-direction: column; gap: 6px;
	padding: 22px 22px 20px; min-height: 190px;
	background: var(--aa-card); border: 1px solid var(--aa-border); border-radius: var(--aa-radius);
	box-shadow: var(--aa-shadow); color: var(--aa-text);
	transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
	overflow: hidden;
}
.aa-card::before {
	content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: var(--c);
}
.aa-card:hover, .aa-card:focus-visible { transform: translateY(-4px); box-shadow: var(--aa-shadow-hover); border-color: var(--c); color: var(--aa-text); }
.aa-card__icon {
	display: grid; place-items: center; width: 54px; height: 54px; margin-bottom: 8px;
	font-size: 28px; line-height: 1; border-radius: 16px; background: #f1f5f9;
	background: color-mix(in srgb, var(--c) 14%, #fff);
}
.aa-card__title { font-size: 19px; font-weight: 700; line-height: 1.25; color: var(--aa-text); }
.aa-card__desc { font-size: 14px; color: var(--aa-muted); }
.aa-card__meta { margin-top: auto; padding-top: 10px; font-size: 13px; font-weight: 600; color: var(--c); }
.aa-card__arrow {
	position: absolute; right: 18px; bottom: 16px; font-size: 20px; color: var(--c);
	opacity: 0; transform: translateX(-6px); transition: all .18s ease;
}
.aa-card:hover .aa-card__arrow, .aa-card:focus-visible .aa-card__arrow { opacity: 1; transform: none; }

.aa-h2 { font-size: 20px; font-weight: 700; margin: 8px 0 14px !important; }

/* ---------- Lista de contenidos ---------- */
.aa-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.aa-item {
	--c: var(--aa-accent);
	display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 16px;
	padding: 16px 20px; background: var(--aa-card); border: 1px solid var(--aa-border);
	border-radius: 16px; box-shadow: var(--aa-shadow); color: var(--aa-text);
	transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.aa-item:hover, .aa-item:focus-visible { transform: translateX(4px); box-shadow: var(--aa-shadow-hover); border-color: var(--c); color: var(--aa-text); }
.aa-item.is-hidden { opacity: .6; border-style: dashed; }
.aa-item__icon {
	display: grid; place-items: center; width: 48px; height: 48px; font-size: 24px; border-radius: 14px;
	background: #f1f5f9; background: color-mix(in srgb, var(--c) 14%, #fff);
}
.aa-item__body { display: flex; flex-direction: column; min-width: 0; }
.aa-item__body strong { font-size: 16.5px; font-weight: 650; line-height: 1.3; }
.aa-item__body small { color: var(--aa-muted); font-size: 14px; margin-top: 2px; }
.aa-item__tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.aa-item__go { font-size: 26px; color: var(--aa-muted); transition: transform .15s, color .15s; }
.aa-item:hover .aa-item__go { color: var(--c); transform: translateX(3px); }

.aa-tag {
	display: inline-block; padding: 3px 10px; border-radius: 999px;
	font-size: 12px; font-weight: 700; letter-spacing: .01em; white-space: nowrap;
}
.aa-tag--kind { background: #f1f5f9; color: #475569; background: color-mix(in srgb, var(--c) 12%, #fff); color: var(--c); }
.aa-tag--new { background: #dcfce7; color: #15803d; }
.aa-tag--hidden { background: #fef3c7; color: #92400e; }

/* ---------- Detalle de contenido ---------- */
.aa-article {
	background: var(--aa-card); border: 1px solid var(--aa-border); border-radius: 22px;
	box-shadow: var(--aa-shadow); padding: 28px; margin-bottom: 20px;
}
.aa-article__head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.aa-article__icon {
	flex: none; display: grid; place-items: center; width: 58px; height: 58px; font-size: 30px; border-radius: 18px;
	background: #f1f5f9; background: color-mix(in srgb, var(--c) 14%, #fff);
}
.aa-article h1 { font-size: clamp(22px, 3.4vw, 30px); line-height: 1.2; font-weight: 800; letter-spacing: -.015em; color: var(--aa-text); }
.aa-article__tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.aa-article__date { font-size: 13px; color: var(--aa-muted); }
.aa-article__desc { margin-bottom: 22px; font-size: 16.5px; color: #334155; }
.aa-article__desc p { margin: 0 0 .8em; }

.aa-viewer { width: 100%; }
.aa-pdf { display: block; width: 100%; height: min(80vh, 900px); min-height: 420px; border: 1px solid var(--aa-border); border-radius: 14px; background: var(--aa-soft); }
.aa-image { display: block; max-width: 100%; height: auto; margin: 0 auto; border-radius: 14px; border: 1px solid var(--aa-border); }
.aa-player { display: block; width: 100%; max-height: 75vh; border-radius: 14px; background: #000; }
.aa-audio { width: 100%; }
.aa-video { position: relative; width: 100%; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #000; }
.aa-video iframe, .aa-video video, .aa-video embed, .aa-video object { position: absolute; inset: 0; width: 100% !important; height: 100% !important; border: 0; }

.aa-filecard, .aa-linkcard {
	display: flex; align-items: center; gap: 16px; padding: 20px;
	background: var(--aa-soft); border: 1px dashed var(--aa-border); border-radius: 16px;
}
.aa-filecard__icon { font-size: 40px; line-height: 1; }
.aa-filecard strong { display: block; word-break: break-word; }
.aa-filecard small { color: var(--aa-muted); }
.aa-linkcard { justify-content: space-between; flex-wrap: wrap; }
.aa-linkcard__host { font-weight: 600; word-break: break-all; }

.aa-actions { margin-top: 18px !important; }
.aa-btn {
	display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px;
	background: var(--c, var(--aa-accent)); color: #fff !important; font-weight: 700; font-size: 15px;
	border-radius: 999px; border: 0; cursor: pointer;
	box-shadow: 0 8px 18px -8px var(--c, var(--aa-accent));
	transition: transform .15s ease, filter .15s ease;
}
.aa-btn:hover { transform: translateY(-2px); filter: brightness(1.08); color: #fff; }

/* ---------- Anterior / siguiente ---------- */
.aa-pn { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-bottom: 8px; }
.aa-pn__a {
	display: flex; flex-direction: column; gap: 2px; padding: 14px 18px;
	background: var(--aa-card); border: 1px solid var(--aa-border); border-radius: 14px; color: var(--aa-text);
	transition: border-color .15s, transform .15s;
}
.aa-pn__a:hover { border-color: var(--c); transform: translateY(-2px); color: var(--aa-text); }
.aa-pn__a small { color: var(--aa-muted); font-size: 12.5px; font-weight: 600; }
.aa-pn__a span { font-weight: 650; font-size: 15px; line-height: 1.3; }
.aa-pn__next { text-align: right; }
.aa-pn__up { text-align: center; background: var(--aa-soft); }

.aa-back { margin-top: 8px !important; }
.aa-back a { color: var(--c, var(--aa-accent)); font-weight: 650; }

/* ---------- Estados vacíos, login, admin ---------- */
.aa-empty { text-align: center; padding: 56px 20px; color: var(--aa-muted); background: var(--aa-soft); border: 2px dashed var(--aa-border); border-radius: 20px; margin-bottom: 20px; }
.aa-empty div { font-size: 48px; margin-bottom: 8px; }
.aa-noresults { text-align: center; color: var(--aa-muted); padding: 24px 0; }
.aa-staffbar { margin: 8px 0 0; padding: 10px 16px; font-size: 14px; color: #92400e; background: #fffbeb; border: 1px solid #fde68a; border-radius: 12px; }

.aa-login {
	max-width: 420px; margin: 32px auto; padding: 36px 32px; text-align: center;
	background: var(--aa-card); border: 1px solid var(--aa-border); border-radius: 24px; box-shadow: var(--aa-shadow);
}
.aa-login__icon { font-size: 52px; }
.aa-login h2 { font-size: 24px; margin: 6px 0 4px !important; color: var(--aa-text); }
.aa-login > p { color: var(--aa-muted); margin-bottom: 18px !important; }
.aa-login form { text-align: left; }
.aa-login label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.aa-login input[type="text"], .aa-login input[type="password"] {
	width: 100%; padding: 12px 14px; font-size: 16px; border: 1px solid var(--aa-border); border-radius: 12px; margin-bottom: 14px;
}
.aa-login .login-remember label { display: flex; gap: 8px; align-items: center; font-weight: 500; }
.aa-login input[type="submit"] {
	width: 100%; padding: 13px; margin-top: 8px; font-size: 16px; font-weight: 700; color: #fff; cursor: pointer;
	background: var(--aa-accent); border: 0; border-radius: 999px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
	.aa-app { padding: 4px 12px 32px; }
	.aa-hero, .aa-hero--home { padding: 26px 20px; border-radius: 20px; }
	.aa-hero__icon { width: 54px; height: 54px; font-size: 28px; border-radius: 16px; }
	.aa-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
	.aa-card { min-height: 0; padding: 18px 16px; }
	.aa-card__icon { width: 46px; height: 46px; font-size: 24px; }
	.aa-card__title { font-size: 16.5px; }
	.aa-item { grid-template-columns: auto 1fr auto; padding: 14px; gap: 12px; }
	.aa-item__tags { grid-column: 2 / 3; grid-row: 2; justify-content: flex-start; }
	.aa-item__go { grid-row: 1; grid-column: 3; }
	.aa-article { padding: 18px; border-radius: 18px; }
	.aa-article__icon { width: 48px; height: 48px; font-size: 24px; }
	.aa-pn { grid-template-columns: 1fr; }
	.aa-pn__next, .aa-pn__up { text-align: left; }
	.aa-btn { width: 100%; justify-content: center; }
	.aa-pdf { height: 70vh; }
}
@media (max-width: 420px) {
	.aa-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
	.aa-app * { transition: none !important; }
}

/* ---------- Barra de usuario y cuenta ---------- */
.aa-userbar {
	display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
	margin: 4px 0 8px; padding: 8px 4px; font-size: 14px;
}
.aa-userbar__home { font-weight: 700; color: var(--aa-text); }
.aa-userbar__me { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.aa-userbar__avatar {
	display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
	background: var(--aa-accent); color: #fff; font-weight: 700;
}
.aa-userbar__name { font-weight: 600; }
.aa-userbar__me a { color: var(--aa-muted); font-weight: 600; }
.aa-userbar__me a:hover { color: var(--aa-accent); }
.aa-userbar__out { padding: 6px 14px; border: 1px solid var(--aa-border); border-radius: 999px; background: var(--aa-card); }

.aa-account { max-width: 480px; }
.aa-form {
	display: flex; flex-direction: column; gap: 6px; padding: 26px;
	background: var(--aa-card); border: 1px solid var(--aa-border); border-radius: 20px; box-shadow: var(--aa-shadow);
}
.aa-form h2 { font-size: 20px; margin-bottom: 8px !important; }
.aa-form label { font-size: 14px; font-weight: 600; margin-top: 8px; }
.aa-form label small { font-weight: 400; color: var(--aa-muted); }
.aa-form input {
	width: 100%; padding: 12px 14px; font-size: 16px; border: 1px solid var(--aa-border); border-radius: 12px;
}
.aa-form input:focus { outline: 0; border-color: var(--aa-accent); box-shadow: 0 0 0 3px rgba(79, 70, 229, .15); }
.aa-form .aa-btn { margin-top: 16px; justify-content: center; }
.aa-account__out { margin-top: 18px !important; }
.aa-btn--ghost { background: transparent; color: var(--aa-text) !important; border: 1px solid var(--aa-border); box-shadow: none; }
.aa-btn--ghost:hover { border-color: var(--aa-accent); color: var(--aa-accent) !important; filter: none; }
.aa-alert { padding: 12px 16px; border-radius: 12px; margin-bottom: 14px; font-weight: 600; }
.aa-alert--ok { background: #dcfce7; color: #15803d; }
.aa-alert--err { background: #fee2e2; color: #b91c1c; }
@media (max-width: 720px) {
	.aa-userbar { justify-content: center; }
	.aa-account__out .aa-btn { width: 100%; }
}