/* ==========================================================================
   Schleinzer.app – Stylesheet
   Reduziertes, elegantes, modernes Designsystem.
   ========================================================================== */

/* ---------- Lokale Schriftart: Inter (WOFF2, lokal gehostet) ---------- */
/* Die eigentlichen Dateien müssen unter /assets/fonts/ abgelegt werden. */
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-300.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- Custom Properties ---------- */
:root {
  /* Farben */
  --color-text: #0D0D0D;
  --color-text-secondary: #4A4A4A;
  --color-border: #DADADA;
  --color-background: #F3F3F1;
  --color-surface: #FFFFFF;
  --color-hover: #F8F8F6;

  /* Typografie */
  --font-base: "Inter", Arial, Helvetica, sans-serif;
  --fs-h1: clamp(2.25rem, 4vw + 1rem, 4rem);
  --fs-h2: clamp(1.5rem, 2vw + 1rem, 2rem);
  --fs-card-title: clamp(1.125rem, 1vw + 1rem, 1.375rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-eyebrow: 0.8125rem;

  /* Abstände (8pt-System) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Border-Radien */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Übergänge */
  --transition-fast: 180ms ease;

  /* Layout */
  --max-width: 1240px;
  --header-height: 76px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1.2;
}

p {
  margin: 0;
}

/* ---------- Sichtbarer Fokuszustand ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-2) var(--space-3);
  z-index: 100;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-background);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--header-height);
}

.site-header__logo {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.site-nav__list {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.site-nav__list::-webkit-scrollbar {
  display: none;
}

.site-nav__list a {
  font-size: var(--fs-small);
  font-weight: 500;
  white-space: nowrap;
  padding: var(--space-1) 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.site-nav__list a:hover {
  border-bottom-color: var(--color-text);
}

/* ---------- Eyebrow / kleine Kennzeichnung ---------- */
.eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

/* ---------- Hero ---------- */
.hero {
  padding-block: var(--space-7) var(--space-6);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}

.hero__content {
  opacity: 0;
  transform: translateY(12px);
}

.hero__title {
  font-size: var(--fs-h1);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

.hero__text {
  color: var(--color-text-secondary);
  max-width: 42ch;
  margin-bottom: var(--space-3);
  font-size: 1.0625rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-small);
  font-weight: 500;
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
  transition: opacity var(--transition-fast);
}

.text-link:hover {
  opacity: 0.6;
}

.text-link span {
  transition: transform var(--transition-fast);
}

.text-link:hover span {
  transform: translateX(3px);
}

.hero__media {
  order: -1;
  opacity: 0;
}

.hero__media img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* JS-gestützte Einblend-Animation */
.js-ready .hero__content,
.js-ready .hero__media {
  animation: fade-in-up 700ms ease forwards;
}

.js-ready .hero__media {
  animation-delay: 120ms;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fallback ohne JavaScript: Inhalte bleiben sichtbar */
.no-js .hero__content,
.no-js .hero__media {
  opacity: 1;
  transform: none;
}

/* ---------- Projekte ---------- */
.projects {
  padding-block: var(--space-6);
}

.projects__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-5);
}

.category {
  margin-bottom: var(--space-6);
  opacity: 1;
  transform: none;
}

.category:last-child {
  margin-bottom: 0;
}

.js-ready .category[data-animate] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.js-ready .category[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.category__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.category__number {
  font-size: var(--fs-small);
  font-weight: 500;
}

.category__name {
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.category__rule {
  flex: 1;
}

.category__icon {
  display: inline-flex;
  color: var(--color-text-secondary);
}

/* ---------- Kartenraster ---------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.card {
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  min-height: 168px;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--color-text-secondary);
  background-color: var(--color-hover);
}

.card__number {
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--fs-card-title);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  flex: 1;
}

.card__arrow {
  align-self: flex-end;
  margin-top: var(--space-2);
  font-size: 1.125rem;
  transition: transform var(--transition-fast);
}

.card:hover .card__arrow {
  transform: translateX(3px);
}

/* ---------- Über mich ---------- */
.about {
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.about__inner {
  max-width: 640px;
}

.about__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-2);
}

.about__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

/* ---------- Kontakt ---------- */
.contact {
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.contact__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-2);
}

.contact__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.contact__email {
  display: inline-block;
  font-size: 1.125rem;
  font-weight: 500;
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
  transition: opacity var(--transition-fast);
}

.contact__email:hover {
  opacity: 0.6;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-4);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
}

.site-footer__inner a {
  transition: opacity var(--transition-fast);
}

.site-footer__inner a:hover {
  opacity: 0.6;
}

.site-footer__links {
  display: flex;
  gap: var(--space-3);
}

/* ---------- Impressum & Datenschutz ---------- */
.legal {
  padding-block: var(--space-6) var(--space-7);
}

.legal__inner {
  max-width: 720px;
}

.legal__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-4);
}

.legal__section {
  margin-bottom: var(--space-5);
}

.legal__section h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--color-border);
}

.legal__section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: var(--space-3);
  margin-bottom: var(--space-1);
}

.legal__section p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.legal__section a {
  border-bottom: 1px solid currentColor;
}

.legal__meta {
  font-size: var(--fs-small);
  font-style: italic;
}

/* ---------- 404-Seite ---------- */
.not-found {
  padding-block: var(--space-8);
  text-align: center;
}

.not-found__code {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.not-found__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   Responsive: Tablet (ab 640px)
   ========================================================================== */
@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid--single {
    grid-template-columns: 1fr;
    max-width: calc(50% - (var(--space-3) / 2));
  }
}

/* ==========================================================================
   Responsive: Desktop (ab 960px)
   ========================================================================== */
@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .hero__media {
    order: 0;
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid--single {
    max-width: calc(33.333% - (var(--space-3) * 2 / 3));
  }
}

/* ==========================================================================
   Reduzierte Bewegung
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js-ready .hero__content,
  .js-ready .hero__media,
  .js-ready .category[data-animate] {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .card,
  .card__arrow,
  .text-link span {
    transition: none !important;
  }

  .card:hover {
    transform: none;
  }
}