/* ==========================================================================
   base.css – Reset, Basistypografie, Grund-Layout-Helfer
   ========================================================================== */

/* --- Modernes Reset --------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;   /* iOS: kein automatisches Vergrößern */
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  font-weight: var(--fw-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; background: none; border: none; }

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

ul[role="list"],
ol[role="list"] { list-style: none; padding: 0; }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* --- Typografie ------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-heading);
  line-height: var(--lh-tight);
  font-weight: var(--fw-heading);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

h1 { font-size: var(--fs-800); font-weight: var(--fw-heading-strong); }
h2 { font-size: var(--fs-700); }
h3 { font-size: var(--fs-600); }
h4 { font-size: var(--fs-500); }

p { color: var(--color-text); }
strong { color: var(--color-text); font-weight: 600; }

::selection {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

/* --- Layout-Helfer ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section { padding-block: var(--section-y); }
.section--alt { background-color: var(--color-bg-alt); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* Skip-Link für Tastaturnavigation */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -100px;
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-on-accent);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}
.skip-link:focus { top: var(--space-3); }

/* Sanftes Einblenden beim Scrollen (per JS aktiviert) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}