/* /link — austere mobile entry channel */
:root {
  --link-bg: #0d0d0d;
  --link-text: #c8d0d4;
  --link-dim: #5a6268;
  --link-cyan: #00f0ff;
  --link-blue: #3b82f6;
  --link-purple: #a855f7;
  --link-green: #00ff00;
  --link-red: #ff4500;
  --link-font: "Courier New", Courier, monospace;
  --link-size: 18px;
  --term-h: 42vh;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: var(--link-size); }

body.link-body {
  font-family: var(--link-font);
  background: var(--link-bg);
  color: var(--link-text);
  min-height: 100dvh;
  overflow-x: hidden;
  line-height: 1.55;
}

#link-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.55;
  pointer-events: none;
}

.link-wrap {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 1rem 0.85rem calc(1.25rem + env(safe-area-inset-bottom));
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.link-header {
  text-align: center;
  margin-bottom: 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(0,240,255,0.12);
  flex-shrink: 0;
}
.link-header h1 {
  font-size: 0.95rem;
  font-weight: normal;
  letter-spacing: 0.1em;
  color: var(--link-cyan);
  text-transform: uppercase;
  line-height: 1.45;
}
.link-header p {
  font-size: 0.75rem;
  color: var(--link-dim);
  margin-top: 0.4rem;
  letter-spacing: 0.06em;
}

/* Fixed-size event terminal — scroll inside only */
.link-terminal-wrap {
  flex-shrink: 0;
  height: var(--term-h);
  min-height: 200px;
  max-height: 420px;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(0, 240, 255, 0.15);
  background: #080808;
  position: relative;
}
.link-terminal-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.04) 2px, rgba(0,0,0,0.04) 4px);
  pointer-events: none;
  z-index: 2;
}
.link-terminal__label {
  flex-shrink: 0;
  padding: 0.45rem 0.75rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--link-dim);
  text-transform: uppercase;
  border-bottom: 1px solid rgba(0,240,255,0.08);
  background: rgba(0,0,0,0.3);
}
.link-terminal {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.75rem;
  font-size: 0.88rem;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.link-terminal::-webkit-scrollbar { width: 4px; }
.link-terminal::-webkit-scrollbar-thumb {
  background: rgba(168, 85, 247, 0.35);
  border-radius: 2px;
}

.link-terminal__line {
  margin-bottom: 0.45rem;
  animation: termFade 0.3s ease;
  line-height: 1.5;
}
.link-terminal__line.cmd   { color: var(--link-green); font-size: 0.82rem; }
.link-terminal__line.out   { color: var(--link-text); }
.link-terminal__line.warn  { color: var(--link-red); }
.link-terminal__line.void  { color: #c4b5fd; }
.link-terminal__line.aegis { color: #7dd3fc; }
.link-terminal__line.sys   { color: var(--link-dim); font-size: 0.8rem; }
.link-terminal__cursor {
  display: inline-block;
  width: 0.5em;
  height: 0.95em;
  background: var(--link-cyan);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}
@keyframes termFade { from{opacity:0} to{opacity:1} }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.link-bottom {
  flex-shrink: 0;
  width: 100%;
}

.link-section {
  border: 1px solid rgba(0,240,255,0.15);
  background: rgba(8,8,8,0.92);
  margin-bottom: 0.85rem;
}
.link-section__head {
  padding: 0.5rem 0.75rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--link-cyan);
  border-bottom: 1px solid rgba(0,240,255,0.1);
  text-transform: uppercase;
}

.link-input {
  width: 100%;
  background: #080808;
  border: none;
  color: var(--link-green);
  font-family: var(--link-font);
  font-size: 1.05rem;
  padding: 0.9rem 0.75rem;
  outline: none;
}
.link-input::placeholder { color: var(--link-dim); }

.link-btn {
  width: 100%;
  font-family: var(--link-font);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem;
  border: 1px solid rgba(0,240,255,0.25);
  background: rgba(0,240,255,0.06);
  color: var(--link-cyan);
  cursor: pointer;
  margin-top: 0.5rem;
}
.link-btn:disabled { opacity: 0.35; }

.wire-module { padding: 0.9rem 0.75rem; }
.wire-serial {
  font-size: 0.78rem;
  color: var(--link-dim);
  margin-bottom: 0.85rem;
  letter-spacing: 0.1em;
}
.wire-serial strong { color: var(--link-text); }
.wires {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1rem 0;
}
.wire {
  height: 14px;
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.wire:active { transform: scaleY(0.7); }
.wire--rojo { background: #c0392b; }
.wire--azul { background: #2980b9; }
.wire--amarillo { background: #f1c40f; }
.wire--blanco { background: #ecf0f1; }
.wire--negro { background: #2c3e50; }

.wire-hint {
  font-size: 0.82rem;
  color: #c8a84b;
  border-left: 3px solid #c8a84b;
  padding-left: 0.7rem;
  margin-top: 0.85rem;
  line-height: 1.5;
  display: none;
}
.wire-hint.visible { display: block; }

.link-msg {
  padding: 0.85rem;
  font-size: 0.88rem;
  line-height: 1.5;
  margin-top: 0.65rem;
  display: none;
}
.link-msg.ok { display: block; color: var(--link-green); border: 1px solid rgba(0,255,0,0.25); }
.link-msg.err { display: block; color: var(--link-red); border: 1px solid rgba(255,69,0,0.3); }

.link-footer {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--link-dim);
}

.hidden { display: none !important; }

/* Tablet — wider layout */
@media (min-width: 600px) {
  :root { --link-size: 17px; --term-h: 48vh; }
  .link-wrap {
    max-width: 720px;
    padding: 1.25rem 1.5rem;
  }
  .link-terminal { font-size: 0.9rem; }
  .link-terminal-wrap { max-height: 480px; }
}

/* Desktop — full width terminal */
@media (min-width: 900px) {
  :root { --term-h: 52vh; }
  .link-wrap {
    max-width: 1100px;
    padding: 1.5rem 2.5rem;
  }
  .link-terminal-wrap {
    max-height: 520px;
    border-color: rgba(168, 85, 247, 0.2);
  }
  .link-header h1 { font-size: 1.05rem; }
  .link-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: start;
  }
  .link-bottom .link-section,
  .link-bottom .link-btn { margin-bottom: 0; }
  #btn-enter-puzzle { grid-column: 1 / -1; }
}

@media (min-width: 1200px) {
  .link-wrap { max-width: 1280px; }
  .link-terminal-wrap { max-height: 560px; }
}