/* =====================================================================
   BASE — Reset, Typografie, Layout-Primitive, Buttons.
   Enthält bewusst keine sektions-spezifischen Regeln.
   ===================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--slate-900);
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 {
  color: var(--ink-1);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.022em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-hero); font-weight: 700; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -0.012em; }
p  { margin: 0 0 1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

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

:focus-visible {
  outline: 2px solid var(--c-aqua);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(62, 240, 180, 0.28); color: #fff; }

/* --- Layout-Primitive ------------------------------------------------ */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: var(--wrap-narrow); }

.section { position: relative; padding-block: var(--sec-pad); }

.section__head { max-width: 62ch; margin-bottom: clamp(32px, 4vw, 56px); }
.section__head--center { margin-inline: auto; text-align: center; }

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* --- Textbausteine --------------------------------------------------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--c-aqua);
  margin: 0 0 18px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-mint);
  box-shadow: var(--glow-mint);
}

.lead { font-size: var(--fs-lead); color: var(--ink-2); max-width: 60ch; }
.muted { color: var(--ink-3); }
.small { font-size: var(--fs-small); }

/* Verlaufstext wie in der Vorlage */
.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- Buttons --------------------------------------------------------- */

.btn {
  --btn-fg: #04120e;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border: 0;
  border-radius: var(--r-pill);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--btn-fg);
  background: linear-gradient(100deg, var(--c-mint), var(--c-cyan) 55%, var(--c-violet));
  cursor: pointer;
  isolation: isolate;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.22) inset,
              0 10px 34px -12px rgba(56, 200, 255, 0.75);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.34) inset,
              0 16px 44px -12px rgba(120, 200, 255, 0.9);
}
.btn:active { transform: translateY(0); }

/* Glas-Variante */
.btn--ghost {
  --btn-fg: var(--ink-1);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 0 0 1px var(--glass-line) inset;
}
.btn--ghost:hover { box-shadow: 0 0 0 1px var(--glass-line-hi) inset, 0 12px 34px -18px rgba(0, 0, 0, 0.9); }

.btn--sm { padding: 10px 20px; font-size: 0.875rem; }

/* Textlink mit Pfeil */
.link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--c-aqua);
  font-weight: 600;
  font-size: 0.94rem;
  transition: gap var(--dur) var(--ease), color var(--dur) var(--ease);
}
.link:hover { gap: 12px; color: var(--c-mint); }

/* --- Hilfsklassen ---------------------------------------------------- */

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: 8px; left: 8px;
  z-index: 999;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: var(--slate-700);
  color: var(--ink-1);
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }