/* ── Estructura de la aplicación ── */
.app-shell { display: grid; grid-template-columns: auto 1fr; min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; width: 248px; padding: var(--sp-5) var(--sp-4); border-right: 1px solid var(--border); background: rgba(5, 8, 20, 0.6); backdrop-filter: blur(14px); display: flex; flex-direction: column; gap: var(--sp-6); }
.side-nav { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.side-nav a { display: flex; gap: var(--sp-3); align-items: center; padding: 10px 14px; border-radius: 12px; color: var(--text-2); text-decoration: none; font-weight: 500; transition: background var(--dur-1), color var(--dur-1); }
.side-nav a:hover { background: var(--surface); color: var(--text); }
.side-nav a[aria-current='page'] { background: rgba(59, 130, 246, 0.16); color: var(--text); box-shadow: inset 3px 0 0 var(--sky); }
.side-foot { margin-top: auto; display: grid; gap: var(--sp-2); }
.main-col { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 40; display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3) clamp(16px, 3vw, 32px); border-bottom: 1px solid var(--border); background: rgba(5, 8, 20, 0.78); backdrop-filter: blur(14px); flex-wrap: wrap; }
.topbar .spacer { flex: 1; }
.stat-chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: var(--radius-pill); background: var(--surface); border: 1px solid var(--border); font-weight: 700; font-size: var(--fs-sm); }
.stat-chip.gold { color: var(--gold); border-color: rgba(245, 196, 94, 0.4); }
.view { padding: clamp(16px, 3vw, 36px); width: 100%; max-width: 1240px; margin-inline: auto; outline: none; }
.view-head { display: flex; justify-content: space-between; align-items: end; gap: var(--sp-4); flex-wrap: wrap; margin-bottom: var(--sp-5); }
.view-head h1 { font-size: var(--fs-xl); margin: 0; }
.tabbar { display: none; }
@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .tabbar:not([hidden]) { display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; inset: auto 0 0 0; z-index: 60; background: rgba(5, 8, 20, 0.95); border-top: 1px solid var(--border); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); backdrop-filter: blur(12px); }
  .tabbar a { display: grid; justify-items: center; gap: 2px; padding: 6px 2px; color: var(--text-3); text-decoration: none; font-size: 11px; font-weight: 600; border-radius: 10px; }
  .tabbar a span { font-size: 1.25rem; }
  .tabbar a[aria-current='page'] { color: var(--text); background: rgba(59, 130, 246, 0.16); }
  body.app { padding-bottom: 76px; }
  .offline-banner { bottom: 70px; }
}

/* ── Autenticación y bienvenida ── */
.auth-wrap { min-height: calc(100vh - 80px); display: grid; place-items: center; padding: var(--sp-5) 0; }
.auth-card { width: min(460px, 100%); }
.auth-card h1 { font-size: var(--fs-xl); }
.auth-alt { text-align: center; margin-top: var(--sp-4); color: var(--text-2); font-size: var(--fs-sm); }
.demo-note { display: flex; gap: var(--sp-3); align-items: flex-start; padding: var(--sp-3) var(--sp-4); border-radius: var(--radius); border: 1px dashed rgba(251, 191, 36, 0.55); background: rgba(251, 191, 36, 0.07); color: #fde68a; font-size: var(--fs-sm); margin-bottom: var(--sp-4); }
.onb { width: min(860px, 100%); margin-inline: auto; }
.onb-steps { display: flex; gap: var(--sp-2); margin-bottom: var(--sp-5); }
.onb-steps span { flex: 1; height: 6px; border-radius: 6px; background: var(--surface-2); }
.onb-steps span.on { background: var(--grad-primary); }
.choice-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 170px), 1fr)); gap: var(--sp-3); margin: var(--sp-4) 0; }
.choice { position: relative; display: grid; gap: 4px; padding: var(--sp-4); border-radius: var(--radius); border: 1.5px solid var(--border-strong); background: var(--surface); cursor: pointer; transition: border-color var(--dur-1), transform var(--dur-1); }
.choice:hover { border-color: var(--sky); transform: translateY(-1px); }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice:has(input:checked) { border-color: var(--sky); background: rgba(56, 189, 248, 0.12); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2); }
.choice:has(input:focus-visible) { outline: 3px solid var(--sky); outline-offset: 2px; }
.choice:has(input:disabled) { opacity: 0.5; cursor: not-allowed; transform: none; }
.choice strong { font-family: var(--font-display); font-size: 1.15rem; }
.choice small { color: var(--text-3); }
.onb-nav { display: flex; justify-content: space-between; gap: var(--sp-3); margin-top: var(--sp-5); }

/* ── Dashboard ── */
.dash { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--sp-4); }
.dash > * { grid-column: span 12; min-width: 0; }
@media (min-width: 1000px) {
  .span-8 { grid-column: span 8; } .span-4 { grid-column: span 4; } .span-6 { grid-column: span 6; }
}
.welcome { display: grid; grid-template-columns: auto 1fr auto; gap: var(--sp-5); align-items: center; position: relative; overflow: hidden; background: linear-gradient(120deg, rgba(59, 130, 246, 0.22), rgba(10, 17, 36, 0.6) 55%), var(--bg-2); }
.welcome::after { content: ''; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, rgba(56, 189, 248, 0.25), transparent 70%); pointer-events: none; }
.welcome h1 { font-size: var(--fs-xl); margin-bottom: 4px; }
.welcome p { margin: 0; }
.avatar-lg { width: 72px; height: 72px; border-radius: 22px; display: grid; place-items: center; font: 800 1.6rem/1 var(--font-display); background: var(--grad-primary); color: var(--on-accent); box-shadow: var(--shadow-glow); }
.continue { display: grid; gap: 6px; justify-items: end; text-align: right; max-width: 320px; position: relative; z-index: 1; }
.continue .reason { color: var(--text-2); font-size: var(--fs-sm); }
@media (max-width: 760px) { .welcome { grid-template-columns: auto 1fr; } .continue { grid-column: 1 / -1; justify-items: stretch; text-align: left; max-width: none; } }
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--sp-3); }
.stat { padding: var(--sp-4); border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); display: grid; gap: 2px; }
.stat .k { font-size: var(--fs-xs); color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.stat .v { font: 800 1.6rem/1.15 var(--font-display); }
.stat .s { font-size: var(--fs-xs); color: var(--text-3); }
.flame { display: inline-block; animation: flicker 1.6s ease-in-out infinite; transform-origin: 50% 90%; }
@keyframes flicker { 50% { transform: scale(1.12) rotate(-4deg); } }
.card h2 { font-size: var(--fs-lg); display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); }
.ring { --p: 0; width: 120px; height: 120px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--green) calc(var(--p) * 1%), rgba(255, 255, 255, 0.08) 0); transition: --p 900ms; position: relative; margin: 0 auto; }
.ring::before { content: ''; position: absolute; inset: 10px; border-radius: 50%; background: var(--bg-2); }
.ring > span { position: relative; text-align: center; font: 800 1.3rem/1.1 var(--font-display); }
.ring small { display: block; font: 500 var(--fs-xs)/1.2 var(--font-body); color: var(--text-3); }
@property --p { syntax: '<number>'; inherits: false; initial-value: 0; }
.comp-list { display: grid; gap: var(--sp-3); margin: 0; padding: 0; list-style: none; }
.comp-list li { display: grid; gap: 6px; font-size: var(--fs-sm); }
.comp-list .row { display: flex; justify-content: space-between; color: var(--text-2); }
.calendar { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.calendar .dow { font-size: 11px; color: var(--text-3); text-align: center; }
.calendar .day { aspect-ratio: 1; border-radius: 6px; background: rgba(255, 255, 255, 0.05); position: relative; }
.calendar .day[data-l='1'] { background: rgba(52, 211, 153, 0.3); }
.calendar .day[data-l='2'] { background: rgba(52, 211, 153, 0.6); }
.calendar .day[data-l='3'] { background: var(--green); box-shadow: 0 0 10px rgba(52, 211, 153, 0.5); }
.calendar .day.today { outline: 2px solid var(--sky); outline-offset: 1px; }
.mission-list, .history, .err-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-2); }
.mission { display: flex; gap: var(--sp-3); align-items: center; padding: var(--sp-3); border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); }
.mission .ico { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--surface-2); flex: none; font-size: 1.2rem; }
.mission .grow { flex: 1; min-width: 0; }
.mission p { margin: 0; }
.mission.locked { opacity: 0.55; }
.medals { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: var(--sp-3); }
.medal-item { display: grid; justify-items: center; gap: 6px; text-align: center; font-size: var(--fs-xs); color: var(--text-2); }
.medal-item.locked .medal { filter: grayscale(1) brightness(0.55); }
.medal-item.locked .medal > span { opacity: 0.4; }
.history li { display: grid; grid-template-columns: auto 1fr auto; gap: var(--sp-3); align-items: center; font-size: var(--fs-sm); padding: 8px 0; border-bottom: 1px solid var(--border); }
.history li:last-child { border: none; }
.dotx { width: 10px; height: 10px; border-radius: 50%; background: var(--danger); }
.dotx.ok { background: var(--green); }
.dotx.minor { background: var(--sky); }
.dotx.skip { background: var(--text-3); }
.err-list li { display: flex; justify-content: space-between; gap: var(--sp-3); align-items: center; padding: var(--sp-3); border-radius: var(--radius); background: rgba(251, 191, 36, 0.06); border: 1px solid rgba(251, 191, 36, 0.25); font-size: var(--fs-sm); }
.empty { color: var(--text-3); font-size: var(--fs-sm); padding: var(--sp-3) 0; }

/* ── Mapa de la ruta ── */
.world-block { margin-bottom: var(--sp-6); }
.world-title { display: flex; gap: var(--sp-3); align-items: center; margin-bottom: var(--sp-4); }
.world-title .world-orb { width: 56px; height: 56px; font-size: 1.5rem; }
.unit { margin-bottom: var(--sp-5); }
.unit h3 { font-size: var(--fs-lg); }
.path { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-3); position: relative; }
.path::before { content: ''; position: absolute; left: 31px; top: 20px; bottom: 20px; width: 2px; background: linear-gradient(var(--sky), var(--border)); }
.node { display: flex; gap: var(--sp-4); align-items: center; position: relative; }
.node-orb { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; font-size: 1.5rem; flex: none; border: 2px solid var(--border-strong); background: var(--bg-3); z-index: 1; box-shadow: 0 6px 18px -6px rgba(0, 0, 0, 0.6); }
.node.open .node-orb { border-color: var(--sky); background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.3), transparent 45%), #1d4ed8; box-shadow: var(--shadow-glow); }
.node.done .node-orb { border-color: var(--green); background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.3), transparent 45%), var(--green-2); }
.node.mastered .node-orb { border-color: var(--gold); background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.45), transparent 45%), #b7791f; box-shadow: var(--shadow-gold); }
.node.mission .node-orb { width: 72px; height: 72px; margin-left: -4px; }
.node .card { flex: 1; display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); flex-wrap: wrap; padding: var(--sp-3) var(--sp-4); }
.node .card p { margin: 0; }
.node.locked { opacity: 0.6; }

/* ── Reproductor de lección ── */
.player { width: min(820px, 100%); margin-inline: auto; display: grid; gap: var(--sp-5); }
.player-top { display: flex; align-items: center; gap: var(--sp-3); }
.player-top .progress { flex: 1; height: 12px; }
.lesson-intro .vocab { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--sp-2); margin: var(--sp-4) 0; padding: 0; list-style: none; }
.lesson-intro .vocab li { padding: var(--sp-3); border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); font-size: var(--fs-sm); display: flex; gap: var(--sp-2); justify-content: space-between; align-items: center; }
.culture { padding: var(--sp-4); border-radius: var(--radius); background: rgba(245, 196, 94, 0.07); border: 1px solid rgba(245, 196, 94, 0.3); }
.summary { text-align: center; display: grid; justify-items: center; gap: var(--sp-3); }
.summary .big-medal { width: 120px; height: 120px; }
.summary .big-medal > span { width: 92px; height: 92px; font-size: 2.6rem; }
.summary .medal { animation: medal-spin 1.4s var(--ease); }
@keyframes medal-spin { from { transform: perspective(400px) rotateY(-540deg) scale(0.3); } }
.summary-stats { display: flex; gap: var(--sp-3); flex-wrap: wrap; justify-content: center; }

/* ── Tutor ── */
.tutor { display: grid; grid-template-columns: 280px 1fr; gap: var(--sp-4); align-items: start; }
@media (max-width: 900px) { .tutor { grid-template-columns: 1fr; } }
.tutor .chat-log { min-height: 340px; max-height: 56vh; }
.mode-list { display: grid; gap: var(--sp-2); }
.mode-list .choice { padding: var(--sp-3); }
.tutor-tools { display: flex; gap: var(--sp-2); flex-wrap: wrap; align-items: center; }

/* ── Vocabulario ── */
.vocab-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.vocab-table th, .vocab-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
.vocab-table th { color: var(--text-3); font-weight: 600; font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.06em; }
.flashcard { min-height: 240px; display: grid; place-items: center; text-align: center; perspective: 1000px; }
.flash-inner { width: 100%; display: grid; gap: var(--sp-3); justify-items: center; animation: flip 500ms var(--ease); }
@keyframes flip { from { transform: rotateX(70deg); opacity: 0; } }
.flash-term { font: 800 clamp(1.8rem, 6vw, 2.6rem)/1.15 var(--font-display); }

/* ── Certificados ── */
.req { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--sp-2); }
.req li { display: flex; gap: var(--sp-3); align-items: flex-start; font-size: var(--fs-sm); }
.req .mark { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; flex: none; border: 1px solid var(--border-strong); }
.req .ok .mark { background: var(--green); color: var(--on-accent); border-color: var(--green); }
.level-tabs { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-bottom: var(--sp-4); }
.level-tabs [aria-selected='true'] { border-color: var(--sky); background: rgba(56, 189, 248, 0.14); }
.danger-zone { border-color: rgba(251, 113, 133, 0.45); }
.btn-danger { --_bg: rgba(251, 113, 133, 0.12); --_bd: rgba(251, 113, 133, 0.6); --_fg: #fecdd3; }
.toggle-row { display: flex; justify-content: space-between; gap: var(--sp-4); align-items: center; padding: var(--sp-3) 0; border-bottom: 1px solid var(--border); }
.toggle-row p { margin: 0; }
.switch { appearance: none; width: 48px; height: 28px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border-strong); position: relative; cursor: pointer; flex: none; transition: background var(--dur-1); }
.switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--text-2); transition: transform var(--dur-2) var(--ease); }
.switch:checked { background: var(--green-2); }
.switch:checked::after { transform: translateX(20px); background: #fff; }
.side-foot .mission .grow p { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 600px) {
  .topbar { gap: 6px; padding: 8px 12px; flex-wrap: nowrap; }
  .topbar > .pill-sky { display: none; }
  .topbar .demo-badge { font-size: 10px; padding: 2px 6px; }
  .stat-chip { padding: 4px 8px; font-size: 13px; }
}

/* Pie legal dentro de la app */
.app-footer { padding: 0 clamp(16px, 3vw, 36px) var(--sp-5); width: 100%; max-width: 1240px; margin-inline: auto; margin-top: auto; }
.app-footer .legal-line { margin-top: var(--sp-6); }

/* Suscripción */
.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--sp-4); margin-top: var(--sp-5); }
.plan-card { display: grid; gap: var(--sp-2); align-content: start; }
.plan-card h2 { margin: 0; font-size: var(--fs-xl, 1.5rem); }
.plan-card.is-current { border-color: rgba(245, 196, 94, 0.6); box-shadow: 0 0 0 1px rgba(245, 196, 94, 0.25), 0 20px 40px -20px rgba(245, 196, 94, 0.35); }
.plan-price { margin: 0; font-size: 1.1rem; } .plan-price strong { font: 800 2rem/1.1 var(--font-display); }
.plan-features { margin: 0; padding-left: 1.1em; color: var(--text-2); display: grid; gap: 4px; }
.plan-pay { display: grid; gap: var(--sp-2); margin-top: var(--sp-3); }
.plan-status { margin-top: var(--sp-3); padding-top: var(--sp-3); border-top: 1px solid var(--border); }
.plan-card .pill { justify-self: start; }
.topbar-link { padding-inline: 10px; }

/* Panel de administración */
.admin-tabs { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin: var(--sp-4) 0 var(--sp-2); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; padding: var(--sp-2) 0; background: var(--bg); }
.admin-tabs a { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2); text-decoration: none; font-weight: 600; font-size: var(--fs-sm); }
.admin-tabs a:hover { color: var(--text); border-color: var(--sky, #38bdf8); }
.admin-section { margin-top: var(--sp-6); scroll-margin-top: 70px; display: grid; gap: var(--sp-4); }
.admin-section h2 { margin: 0; }
.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: var(--sp-4); }
.admin-card { display: grid; gap: var(--sp-3); align-content: start; min-width: 0; }
.admin-card .field { margin: 0; }
.admin-card-head { display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.admin-card-head h3 { margin: 0; font-size: var(--fs-lg); }
.admin-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--sp-3); }
.admin-actions { display: flex; gap: var(--sp-2); align-items: center; flex-wrap: wrap; }
.toggle-inline { display: inline-flex; gap: 8px; align-items: center; font-weight: 600; font-size: var(--fs-sm); }
.copy-row { display: flex; gap: var(--sp-2); align-items: center; min-width: 0; }
.copy-row code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; padding: 8px 10px; border-radius: 10px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); font-size: var(--fs-xs); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
textarea.input { resize: vertical; min-height: 80px; font: inherit; }
.ok-text { color: #34d399; }
.table-wrap { overflow-x: auto; }
.audit-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: var(--fs-sm); }