@font-face{
  font-family:"ArkhanenRunen";
  src:url("/fonts/ArkhanenRunen.otf") format("opentype");
  font-weight:normal;
  font-style:normal;
  font-display:swap;
}

:root{
  --bg-1:#0f1116;
  --bg-2:#161a22;
  --panel:#1b2029;
  --panel-2:#141922;
  --ink:#e8e8e8;
  --ink-soft:#b8c0cf;
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.22);
  --accent:rgba(255,255,255,.06);
  --box-bg:#fbfbfb;
  --box-ink:#111;
  --shadow:0 18px 50px rgba(0,0,0,.34);
  --radius:24px;
  --max:1460px;
  --sidebar:320px;
}

*{
  box-sizing:border-box;
}

html,body{
  margin:0;
  padding:0;
  min-height:100%;
  background:
    radial-gradient(circle at top, rgba(255,255,255,.04), transparent 30%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  color:var(--ink);
  font-family:"Times New Roman", Times, serif;
  scroll-behavior:smooth;
}

body{
  padding:36px 20px 56px;
}

a{
  color:inherit;
  text-decoration:none;
}

.page{
  width:min(100%, var(--max));
  margin:0 auto;
}

/* ---------- TIPOGRAFÍA ---------- */

.runic{
  font-family:"ArkhanenRunen", "Times New Roman", serif;
}

.p-es{
  margin:0 0 14px;
  font-family:"Times New Roman", Times, serif;
  font-size:1.12rem;
  line-height:1.72;
  color:var(--ink);
  text-align: justify;
}

.p-ka{
  margin:0 0 14px;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:1.35rem;
  line-height:1.7;
  letter-spacing:.03em;
  color:rgba(255,255,255,.86);
}

/* ---------- BANNER ---------- */

.hero{
  text-align:center;
  margin-bottom:34px;
}

.hero-title{
  margin:0;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:clamp(2rem, 4.4vw, 4rem);
  font-weight:normal;
  letter-spacing:.05em;
  color:rgba(255,255,255,.88);
  text-shadow:0 0 16px rgba(255,255,255,.08);
}

.hero-line{
  width:min(100%, 940px);
  height:3px;
  margin:18px auto 0;
  border-radius:999px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.78), transparent);
  box-shadow:0 0 10px rgba(255,255,255,.08);
}

/* ---------- PANELES ---------- */

.panel{
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow);
}

.content{
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
  border:1px solid var(--line);
  border-radius:24px;
  padding:24px 24px 30px;
  box-shadow:var(--shadow);
}

.intro{
  padding:0 0 14px;
  border-bottom:1px solid var(--line);
  margin-bottom:22px;
}

.intro h2,
.intro-main{
  margin:0 0 10px;
  font-size:1.5rem;
  font-weight:normal;
  color:#fff;
}

.intro-text{
  margin:0;
  font-size:14px;
  line-height:1.82;
  color:rgba(255,255,255,.86);
  letter-spacing:.03em;
}

/* ---------- LAYOUT CON SIDEBAR ---------- */

.layout{
  display:grid;
  grid-template-columns:var(--sidebar) minmax(0,1fr);
  gap:26px;
  align-items:start;
}

.sidebar{
  position:sticky;
  top:18px;
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow);
  overflow:hidden;
}

.sidebar-header{
  padding:18px 18px 14px;
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.03);
}

.sidebar-title{
  margin:0;
  font-size:18px;
  font-weight:normal;
  color:#fff;
  letter-spacing:.03em;
}

.sidebar-sub{
  margin:6px 0 0;
  font-size:14px;
  color:var(--ink-soft);
  letter-spacing:.03em;
}

.sidebar-actions{
  display:flex;
  gap:10px;
  padding:14px 18px 6px;
  flex-wrap:wrap;
}

.nav{
  max-height:calc(100vh - 170px);
  overflow:auto;
  padding:10px 0 14px;
}

.nav a{
  display:block;
  padding:12px 18px;
  font-size:14px;
  color:var(--ink-soft);
  border-left:3px solid transparent;
  transition:background .18s ease, color .18s ease, border-color .18s ease;
  letter-spacing:.03em;
}

.nav a:hover{
  background:rgba(255,255,255,.05);
  color:#fff;
  border-left-color:rgba(255,255,255,.55);
}

/* ---------- BOTONES ---------- */

.mini-btn,
.task-link,
.back-link{
  display:inline-block;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  color:var(--ink);
  border-radius:12px;
  padding:10px 14px;
  cursor:pointer;
  font-family:inherit;
  font-size:14px;
  letter-spacing:.03em;
  transition:background .18s ease, color .18s ease, transform .18s ease, border-color .18s ease;
}

.mini-btn:hover,
.task-link:hover,
.back-link:hover{
  background:rgba(255,255,255,.10);
  color:#fff;
  border-color:rgba(255,255,255,.24);
  transform:translateY(-1px);
}

/* ---------- LECCIONES PLEGABLES ---------- */

.lesson{
  margin-bottom:14px;
  border:1px solid rgba(255,255,255,.09);
  border-radius:18px;
  background:rgba(255,255,255,.025);
  overflow:hidden;
  scroll-margin-top:24px;
}

.lesson[open]{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.15);
}

.lesson-summary{
  list-style:none;
  cursor:pointer;
  padding:18px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  transition:background .18s ease;
}

.lesson-summary::-webkit-details-marker{
  display:none;
}

.lesson-summary:hover{
  background:rgba(255,255,255,.04);
}

.lesson-summary-text{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.lesson-title{
  margin:0;
  font-size:1.34rem;
  color:#fff;
  font-weight:normal;
}

.lesson-icon{
  font-size:1.1rem;
  color:var(--ink-soft);
  flex:0 0 auto;
  transition:transform .18s ease, color .18s ease;
}

.lesson[open] .lesson-icon{
  transform:rotate(90deg);
  color:#fff;
}

.lesson-body{
  padding:0 20px 18px;
  border-top:1px solid rgba(255,255,255,.08);
}

.topic-note{
  margin:16px 0 14px;
  font-size:.96rem;
  color:var(--ink-soft);
  font-style:italic;
}

.back-top{
  display:inline-block;
  margin-top:8px;
  font-size:.96rem;
  color:var(--ink-soft);
  transition:color .18s ease;
}

.back-top:hover{
  color:#fff;
}

/* ---------- ESTILO ESPECÍFICO LAGÅR ---------- */

.lag-number{
  margin:0;
  font-size:14px;
  color:var(--ink-soft);
  letter-spacing:.04em;
  line-height:1.4;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
}

.lag-title{
  margin:0;
  font-size:18px;
  color:#fff;
  letter-spacing:.04em;
  line-height:1.35;
  font-weight:normal;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
}

.lesson-text{
  margin:16px 0 14px;
  font-size:14px;
  line-height:1.82;
  color:rgba(255,255,255,.86);
  letter-spacing:.03em;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
}

/* ---------- TRADUCTOR ---------- */

.translator-wrap{
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
  border:1px solid var(--line);
  border-radius:28px;
  padding:30px 26px 24px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(4px);
}

.lang-bar{
  display:grid;
  grid-template-columns:1fr 92px 1fr;
  align-items:end;
  gap:16px;
  margin-bottom:14px;
}

.lang-block{
  min-height:54px;
  display:flex;
  align-items:flex-end;
}

.lang-label{
  display:inline-block;
  font-size:1.2rem;
  color:var(--ink);
  line-height:1.1;
  padding:0 4px;
}

.lang-label.runic{
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:1.45rem;
  letter-spacing:.03em;
  color:rgba(255,255,255,.80);
}

.swap-box{
  display:flex;
  justify-content:center;
  align-items:flex-end;
  min-height:54px;
}

.swap-btn{
  width:62px;
  height:62px;
  border:none;
  border-radius:50%;
  cursor:pointer;
  background:rgba(255,255,255,.07);
  color:#fff;
  display:grid;
  place-items:center;
  box-shadow:0 10px 24px rgba(0,0,0,.28);
  transition:transform .2s ease, background .2s ease, box-shadow .2s ease;
}

.swap-btn:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,.11);
  box-shadow:0 14px 28px rgba(0,0,0,.34);
}

.swap-btn:active{
  transform:translateY(0);
}

.swap-icon{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  line-height:1;
  gap:0;
  font-size:1.8rem;
  user-select:none;
}

.translator-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
  align-items:start;
}

.box{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.text-box{
  width:100%;
  min-height:230px;
  resize:vertical;
  border:none;
  outline:none;
  border-radius:22px;
  background:var(--box-bg);
  color:var(--box-ink);
  padding:22px 22px 20px;
  font-family:"Times New Roman", Times, serif;
  font-size:1.2rem;
  line-height:1.55;
  box-shadow:inset 0 0 0 2px rgba(0,0,0,.08), 0 10px 24px rgba(0,0,0,.16);
}

.text-box::placeholder{
  color:rgba(0,0,0,.60);
}

.text-box.runic-input{
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:1.3rem;
  letter-spacing:.03em;
}

.output-box{
  background:#f4f4f4;
}

.translator-tools{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:10px;
}

.keyboard-link{
  display:inline-block;
  border:none;
  background:none;
  padding:0;
  margin:0;
  font:inherit;
  font-size:1.05rem;
  color:var(--ink-soft);
  cursor:pointer;
  transition:color .2s ease, transform .2s ease;
}

.keyboard-link:hover{
  color:#fff;
  transform:translateY(-1px);
}

.future-note{
  font-size:.96rem;
  color:rgba(255,255,255,.55);
  text-align:right;
}

.keyboard-panel{
  display:none;
  margin-top:18px;
  padding:18px 16px 16px;
  border-radius:20px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
}

.keyboard-panel.active{
  display:block;
}

.keyboard-title{
  margin:0 0 12px;
  font-size:1rem;
  color:var(--ink-soft);
}

.key-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(52px, 1fr));
  gap:10px;
}

.key-btn{
  height:50px;
  border:none;
  border-radius:14px;
  cursor:pointer;
  background:#f8f8f8;
  color:#111;
  font-size:1.15rem;
  font-family:"Times New Roman", Times, serif;
  box-shadow:0 6px 14px rgba(0,0,0,.18);
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}

.key-btn.runic{
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:1.45rem;
}

.key-btn:hover{
  transform:translateY(-1px);
  box-shadow:0 8px 18px rgba(0,0,0,.22);
  background:#fff;
}

.key-btn.wide{
  grid-column:span 2;
}

/* ---------- BLOQUE APRENDIZAJE ---------- */

.learn{
  margin-top:72px;
  text-align:center;
}

.learn-title{
  margin:0 0 38px;
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:clamp(1.9rem, 3vw, 3rem);
  font-weight:normal;
  letter-spacing:.04em;
  color:rgba(255,255,255,.82);
  text-shadow:0 0 14px rgba(255,255,255,.05);
}

.learn-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(180px, 1fr));
  gap:54px 40px;
  justify-items:center;
  align-items:start;
}

.learn-card{
  width:min(100%, 270px);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
  transition:transform .2s ease, opacity .2s ease;
}

.learn-card:hover{
  transform:translateY(-3px);
}

.learn-card.empty{
  visibility:hidden;
  pointer-events:none;
}

.rune-frame{
  width:130px;
  height:130px;
  display:grid;
  place-items:center;
}

.rune-frame img{
  max-width:50%;
  max-height:50%;
  object-fit:contain;
  display:block;
  filter:drop-shadow(0 8px 18px rgba(0,0,0,.35));
}

.learn-link{
  font-family:"ArkhanenRunen", "Times New Roman", serif;
  font-size:1.45rem;
  line-height:1.25;
  color:rgba(255,255,255,.80);
  text-align:center;
  transition:color .2s ease, text-shadow .2s ease;
}

.learn-card:hover .learn-link{
  color:#fff;
  text-shadow:0 0 12px rgba(255,255,255,.16);
}

/* ---------- PÁGINAS DE TAREAS ---------- */

.answers-box{
  min-height:420px;
  margin-top:18px;
  padding:20px 20px 18px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.03);
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 1024px){
  .layout{
    grid-template-columns:1fr;
  }

  .sidebar{
    position:relative;
    top:auto;
  }

  .nav{
    max-height:none;
  }

  .translator-grid{
    grid-template-columns:1fr;
  }

  .lang-bar{
    grid-template-columns:1fr;
    gap:10px;
  }

  .swap-box{
    justify-content:flex-start;
    min-height:auto;
  }

  .future-note{
    text-align:left;
  }

  .learn-grid{
    grid-template-columns:repeat(2, minmax(180px, 1fr));
  }

  .learn-card.empty{
    display:none;
  }
}

@media (max-width: 640px){
  body{
    padding:22px 12px 40px;
  }

  .content{
    padding:18px 16px 22px;
  }

  .translator-wrap{
    padding:22px 16px 18px;
    border-radius:22px;
  }

  .text-box{
    min-height:190px;
    padding:18px 18px 16px;
    font-size:1.08rem;
  }

  .lesson-summary{
    padding:16px 16px;
  }

  .lesson-body{
    padding:0 16px 16px;
  }

  .lag-number,
  .lesson-text,
  .nav a,
  .sidebar-sub,
  .task-link,
  .back-link{
    font-size:13px;
  }

  .lag-title,
  .sidebar-title,
  .intro-main{
    font-size:17px;
  }

  .p-es{
    font-size:1.04rem;
  }

  .p-ka{
    font-size:1.22rem;
  }

  .learn{
    margin-top:56px;
  }

  .learn-grid{
    grid-template-columns:1fr;
    gap:42px;
  }

  .rune-frame{
    width:110px;
    height:110px;
  }

  .learn-link{
    font-size:1.3rem;
  }

  .answers-box{
    min-height:320px;
    padding:16px 16px 14px;
  }
}
/* enlace de retorno a Arkhanenrat */

.back-home{
  margin-top:60px;
  margin-bottom:30px;
  text-align:center;
  font-family: "Times New Roman", serif;
}

.back-home a{
  color: rgba(220,220,220,.75);
  text-decoration:none;
  font-size:20px;
  letter-spacing:.5px;
  transition: opacity .25s ease, text-shadow .25s ease;
}

.back-home a:hover{
  opacity:1;
  text-shadow:0 0 6px rgba(255,255,255,.25);
}