/* base.css — Reset, body y helpers de layout */
@import url('./tokens.css');

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--umt-paper);
  background: var(--umt-dark-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video {
  max-width: 100%;
  display: block;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  text-transform: uppercase;
}

/* ===== Helpers ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.stack > * + * {
  margin-top: var(--space-6);
}

.row {
  display: flex;
  gap: var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

.section--dark {
  background: var(--umt-section-alt);
  color: var(--umt-paper);
}

.section--olive {
  background: var(--umt-card-bg);
  color: var(--umt-paper);
  border-top: 1px solid var(--umt-grid-line);
  border-bottom: 1px solid var(--umt-grid-line);
}

.section--paper {
  background: var(--umt-card-bg);
  color: var(--umt-paper);
  border-bottom: 1px solid var(--umt-grid-line);
}

/* Tipografías utilitarias */
.t-display { font-family: var(--font-display); text-transform: uppercase; letter-spacing: var(--tracking-tight); }
.t-mono { font-family: var(--font-mono); }
.t-overline { font-family: var(--font-display); font-size: var(--fs-sm); letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--umt-sand); }
.color-gold { color: var(--umt-tactical-gold) !important; }

/* HUD & Rejilla Táctica (Estilo Command Center) */
.hud-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(200, 182, 138, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 182, 138, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 1;
}


.hud-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(14, 14, 14, 0.10) 0px,
    rgba(14, 14, 14, 0.10) 1px,
    transparent 1px,
    transparent 4px
  );
  pointer-events: none;
  z-index: 2;
  opacity: 0.5;
}

/* Corchetes tácticos [ ] en las esquinas */
.hud-bracket {
  position: relative;
}
.hud-bracket::before,
.hud-bracket::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--umt-tactical-gold);
  pointer-events: none;
  transition: border-color var(--t-fast);
}
.hud-bracket::before {
  top: 0;
  left: 0;
  border-right: none;
  border-bottom: none;
}
.hud-bracket::after {
  bottom: 0;
  right: 0;
  border-left: none;
  border-top: none;
}

/* Cruces tácticas decorativas (+) */
.hud-cross {
  position: relative;
}
.hud-cross::before {
  content: '+';
  position: absolute;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--umt-tactical-gold);
  opacity: 0.5;
  pointer-events: none;
}

/* Línea de cuadrícula divisora visual */
.hud-divider {
  height: 1px;
  background: var(--umt-grid-line);
  position: relative;
  width: 100%;
}
.hud-divider::before {
  content: '+';
  position: absolute;
  left: 10%;
  top: -7px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--umt-sand);
  opacity: 0.4;
}

/* Visibilidad */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Responsive helpers */
@media (max-width: 767px) {
  .hide-mobile { display: none !important; }
  .section { padding: var(--space-16) 0; }
}

@media (min-width: 768px) {
  .hide-desktop { display: none !important; }
}