@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

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

html {
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}
[data-theme="light"] html { color-scheme: light; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom) + var(--sp-4));
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

input {
  font-family: inherit;
  font-size: var(--fs-base);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
  width: 100%;
}
input:focus { border-color: var(--accent); }

.app-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-5) var(--sp-4) var(--sp-4);
}

.screen { display: none; }
.screen.active { display: block; animation: fadeIn var(--dur-slow) var(--ease-out); }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Navegación inferior (mobile) */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--nav-height);
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--text-faint);
  font-size: var(--fs-xs);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-item.active { color: var(--accent); }
.nav-item svg { width: 22px; height: 22px; }

/* Desktop: sidebar en vez de bottom nav */
@media (min-width: 860px) {
  body { padding-bottom: 0; display: flex; }
  .bottom-nav {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 220px;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: var(--sp-6) var(--sp-3);
    border-top: none;
    border-right: 1px solid var(--border);
    gap: var(--sp-2);
  }
  .nav-item { flex-direction: row; justify-content: flex-start; gap: var(--sp-3); font-size: var(--fs-sm); padding: var(--sp-3); }
  .app-shell { flex: 1; max-width: 640px; margin: 0 auto; padding: var(--sp-7) var(--sp-5); }
}

/* Ocultar nav/FAB mientras se muestra el login (aún no hay sesión) */
body:has(#login-screen.active) .bottom-nav,
body:has(#login-screen.active) .fab {
  display: none;
}
@media (min-width: 860px) {
  body:has(#login-screen.active) { display: block; }
}