/* Reutiliza la base del tema (si ya lo tienes en main.css, copia también aquí) */
:root {
  --bg: #0b0a0d;
  --bg2: #120f14;
  --panel: #141016;
  --panel2: #1b141c;
  --text: #e9e6e1;
  --muted: #b9b3aa;
  --red: #7a0f1b;
  --red2: #b2182b;
  --gold: #c9a227;
  --gold2: #f2d37a;
  --line: rgba(233, 230, 225, .10);
  --shadow: 0 16px 40px rgba(0, 0, 0, .55);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

.demo-body {
  margin: 0;
  font-family: "Roboto", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 15% 10%, rgba(122, 15, 27, .28), transparent 60%),
    radial-gradient(900px 500px at 85% 25%, rgba(201, 162, 39, .18), transparent 55%),
    radial-gradient(1200px 700px at 50% 120%, rgba(122, 15, 27, .18), transparent 60%),
    var(--bg);
}

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

.logo {
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--gold), var(--gold2));
  color: #1a1206;
  font-weight: 800;
  border: 0;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .15s ease, filter .15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(201, 162, 39, .35);
  color: var(--text);
  box-shadow: none;
}

.demo-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 10, 13, .6);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-left {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.topbar-sub {
  color: var(--muted);
  font-size: .95rem;
}

.topbar-right {
  display: flex;
  gap: 12px;
  align-items: center;
}

.currency {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid rgba(201, 162, 39, .25);
  border-radius: 999px;
  background: rgba(20, 16, 22, .6);
}

.coin-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, var(--gold2), var(--gold));
  box-shadow: 0 0 0 3px rgba(201, 162, 39, .12);
}

.demo-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  padding: 24px;
}

.demo-nav {
  border-right: 1px solid var(--line);
  padding: 18px;
  background: rgba(20, 16, 22, .55);
}

.nav-title {
  margin: 0 0 12px;
  letter-spacing: .18em;
  font-size: .85rem;
  color: var(--muted);
}

.nav-item {
  width: 100%;
  text-align: left;
  padding: 12px 12px;
  margin: 8px 0;
  border-radius: 14px;
  border: 1px solid rgba(233, 230, 225, .10);
  background: rgba(0, 0, 0, .18);
  color: var(--text);
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease;
}

.nav-item:hover {
  transform: translateX(2px);
  border-color: rgba(201, 162, 39, .25);
}

.nav-item.is-active {
  border-color: rgba(201, 162, 39, .35);
  background: linear-gradient(180deg, rgba(201, 162, 39, .16), rgba(0, 0, 0, .16));
}

.nav-item-danger {
  border-color: rgba(122, 15, 27, .35);
}

.nav-item-danger:hover {
  border-color: rgba(178, 24, 43, .45);
}

.nav-divider {
  height: 1px;
  background: var(--line);
  margin: 14px 0;
}

.demo-content {
  padding: 22px;
}

.screen {
  display: none;
}

.screen.is-visible {
  display: block;
  animation: fadeIn .18s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.screen-header h1 {
  margin: 0 0 6px;
}

.screen-header p {
  margin: 0 0 18px;
  color: var(--muted);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  background: linear-gradient(180deg, rgba(20, 16, 22, .92), rgba(11, 10, 13, .92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.field {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: center;
  margin: 12px 0;
  color: var(--muted);
}

.field select {
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(233, 230, 225, .14);
  background: rgba(0, 0, 0, .22);
  color: var(--text);
}

.field input[type="range"] {
  width: 100%;
}

.value {
  color: var(--text);
  font-weight: 700;
}

.field.check {
  grid-template-columns: auto 1fr;
  justify-content: start;
}

.hint {
  color: var(--muted);
  min-height: 22px;
}

.upgrade {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(233, 230, 225, .08);
  background: rgba(0, 0, 0, .16);
  margin: 10px 0;
}

.muted {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: .92rem;
}

.stepper {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.step {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(201, 162, 39, .30);
  background: rgba(0, 0, 0, .22);
  color: var(--text);
  cursor: pointer;
}

.lvl {
  min-width: 22px;
  text-align: center;
  font-weight: 900;
  color: var(--gold2);
}

.statline {
  display: flex;
  justify-content: space-between;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(233, 230, 225, .08);
  background: rgba(0, 0, 0, .16);
  margin: 10px 0;
}

.preview {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.preview-title {
  color: var(--muted);
  letter-spacing: .12em;
  font-size: .85rem;
  margin-bottom: 10px;
}

.train-preview {
  display: grid;
  gap: 10px;
}

.train {
  height: 64px;
  border-radius: 14px;
  border: 1px solid rgba(201, 162, 39, .22);
  background:
    linear-gradient(180deg, rgba(201, 162, 39, .16), rgba(0, 0, 0, .12)),
    repeating-linear-gradient(90deg, rgba(233, 230, 225, .05), rgba(233, 230, 225, .05) 10px, transparent 10px, transparent 20px);
}

.turret {
  color: var(--gold2);
  font-weight: 900;
  letter-spacing: .2em;
}

.choices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.choice {
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(233, 230, 225, .10);
  background: rgba(0, 0, 0, .18);
  color: var(--text);
  cursor: pointer;
}

.choice.is-selected {
  border-color: rgba(201, 162, 39, .35);
  background: linear-gradient(180deg, rgba(201, 162, 39, .14), rgba(0, 0, 0, .14));
}

.sigil {
  height: 120px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-weight: 1000;
  letter-spacing: .22em;
  border: 1px solid rgba(201, 162, 39, .22);
  background: radial-gradient(circle at 30% 30%, rgba(201, 162, 39, .18), rgba(0, 0, 0, .18));
  color: var(--gold2);
  font-size: 2.2rem;
}

.hud-preview {
  display: grid;
  gap: 10px;
}

.hud-item {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(233, 230, 225, .08);
  background: rgba(0, 0, 0, .16);
}

@media (max-width: 1100px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }
}


/*P arte Responsive */

@media (max-width: 900px) {

  .demo-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .topbar-left,
  .topbar-right {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .demo-layout {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  .demo-nav {
    position: static;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .demo-nav .nav-title,
  .demo-nav .nav-divider {
    grid-column: 1 / -1;
  }

  .demo-nav .nav-item {
    width: 100%;
    text-align: center;
  }

  .demo-content {
    width: 100%;
  }

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

  .screen-header h1 {
    font-size: 2rem;
  }

  .screen-header p {
    font-size: .95rem;
  }
}

@media (max-width: 560px) {

  .demo-body {
    overflow-x: hidden;
  }

  .demo-topbar {
    padding: 14px;
  }

  .logo {
    font-size: .9rem;
    letter-spacing: .08em;
  }

  .topbar-sub {
    display: block;
    font-size: .8rem;
  }

  .topbar-right {
    flex-direction: column;
    align-items: stretch;
  }

  .currency,
  .topbar-right .btn {
    width: 100%;
    justify-content: center;
  }

  .demo-layout {
    padding: 12px;
  }

  .demo-nav {
    grid-template-columns: 1fr;
  }

  .screen {
    padding: 16px;
  }

  .panel {
    padding: 14px;
  }

  .upgrade {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .stepper {
    width: 100%;
    justify-content: space-between;
  }

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

  .statline {
    align-items: flex-start;
    gap: 8px;
  }

  .hud-preview {
    min-height: 220px;
  }
}