/* =========================================================
   christianwolf.ch — Design-System
   ========================================================= */

:root {
  /* Farben */
  --c-primary:   #173A55;
  --c-steel:     #718A9A;
  --c-lightblue: #DDE8ED;
  --c-warmwhite: #F7F5F2;
  --c-stone:     #CFC6BF;
  --c-accent:    #B9775A;
  --c-ink:       #20262B;

  --c-line:      color-mix(in srgb, var(--c-stone) 70%, transparent);
  --c-muted:     color-mix(in srgb, var(--c-ink) 62%, var(--c-warmwhite));

  /* Typografie */
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Inter, "Helvetica Neue", Arial, sans-serif;

  --fs-hero:  clamp(3rem, 9vw, 7.75rem);
  --fs-h2:    clamp(2rem, 4.6vw, 3.75rem);
  --fs-h3:    clamp(1.25rem, 1.9vw, 1.6rem);
  --fs-lead:  clamp(1.125rem, 1.6vw, 1.4rem);
  --fs-body:  clamp(1rem, 1.05vw, 1.0625rem);
  --fs-label: 0.75rem;

  /* Raster */
  --wrap: 1240px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section-y: clamp(5rem, 12vw, 11rem);

  --radius: 4px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- Reset ---------- */

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

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

body {
  margin: 0;
  background: var(--c-warmwhite);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }

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

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

.skip-link {
  position: absolute; top: -100px; left: 1rem; z-index: 200;
  background: var(--c-primary); color: #fff;
  padding: .75rem 1.25rem; border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

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

/* =========================================================
   NAVIGATION
   ========================================================= */

.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .4s var(--ease), box-shadow .4s var(--ease);
}

.nav.is-stuck {
  background-color: rgba(255, 255, 255, .68);
  backdrop-filter: blur(18px) saturate(1.35);
  -webkit-backdrop-filter: blur(18px) saturate(1.35);
  box-shadow: 0 1px 0 var(--c-line);
}

.nav__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(.65rem, 1.1vw, .95rem) var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem;
}

.nav__logo { display: flex; align-items: center; gap: .6rem; }

/* Datei hat einen echten Alphakanal, kein Blend-Trick noetig */
.nav__logo-icon {
  height: 30px; width: auto;
}

.nav__logo-mark {
  font-size: 1.0625rem; font-weight: 500;
  letter-spacing: -.005em;
  color: var(--c-primary);
}

.nav__links { display: flex; align-items: center; gap: clamp(1.25rem, 2.5vw, 2.5rem); }

.nav__links a {
  position: relative;
  font-size: .9375rem;
  color: var(--c-primary);
  padding-block: .25rem;
}

.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--c-primary);
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.nav__links a:hover::after,
.nav__links a.is-active::after { transform: scaleX(1); transform-origin: left; }

.nav__cta {
  border: 1px solid var(--c-line);
  border-radius: 100px;
  padding: .5rem 1.15rem !important;
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.nav__cta::after { display: none; }
.nav__cta:hover { background: var(--c-primary); color: var(--c-warmwhite); border-color: var(--c-primary); }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  background: none; border: 0; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 6px;
  padding: 0;
}
.nav__toggle-bar {
  display: block; width: 24px; height: 1.5px;
  background: var(--c-primary);
  transition: transform .4s var(--ease), opacity .3s;
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

.nav__progress {
  height: 1px;
  background: var(--c-primary);
  transform: scaleX(0); transform-origin: left;
  transition: transform .1s linear;
}

.nav-mobile {
  position: fixed; inset: 0; z-index: 99;
  background: var(--c-warmwhite);
  display: grid; place-items: center;
}
.nav-mobile[hidden] { display: none; }
.nav-mobile nav { display: grid; gap: 1.25rem; text-align: center; }
.nav-mobile a {
  font-size: clamp(1.75rem, 7vw, 2.5rem);
  color: var(--c-primary);
  letter-spacing: -.01em;
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .6rem;
  padding: .95rem 1.9rem;
  border-radius: 100px;
  border: 1px solid transparent;
  font-size: .9375rem; letter-spacing: .01em;
  cursor: pointer;
  transition: background .4s var(--ease), color .4s var(--ease),
              border-color .4s var(--ease), transform .3s var(--ease);
}

.btn--primary {
  background: var(--c-primary);
  color: var(--c-warmwhite);
}
.btn--primary:hover { background: var(--c-ink); }

.btn--ghost {
  border-color: var(--c-line);
  color: var(--c-primary);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--c-primary); background: var(--c-primary); color: var(--c-warmwhite); }

.btn--block { width: 100%; }

/* =========================================================
   HERO
   ========================================================= */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: flex-end;
  padding: calc(var(--gutter) + 4rem) 0 clamp(3rem, 8vw, 6rem);
  overflow: hidden;
  isolation: isolate;
}

.hero__media {
  position: absolute; inset: 0;
  z-index: -1;
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--c-warmwhite);
}

/* Das Video deckt den Hero und sitzt rechts, damit die Typografie
   links auf ruhiger Flaeche steht. */
.hero__video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 68% center;
}

/* Ab Desktop-Breite deckt sich das Videoformat fast mit dem Hero, daher
   greift object-position kaum. Der Versatz kommt hier ueber transform,
   damit das Gesicht rechts neben der Wortmarke steht. */
@media (min-width: 1100px) {
  .hero__video { transform: translateX(7%) scale(1.09); }
}

/* Auf schmalen Viewports wuerde das Gesicht den Text erschlagen:
   nach oben ruecken und zuruecknehmen. */
@media (max-width: 900px) {
  .hero__video { object-position: 66% 18%; opacity: .55; }
}

/* Textseite abdunkeln reicht nicht, sie muss aufgehellt werden:
   ein Warmweiss-Verlauf von links haelt die Schrift lesbar.
   Unten laeuft der Hero weich in die naechste Sektion. */
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(to bottom,
      transparent 78%,
      var(--c-warmwhite) 100%),
    linear-gradient(to right,
      color-mix(in srgb, var(--c-warmwhite) 88%, transparent) 0%,
      color-mix(in srgb, var(--c-warmwhite) 55%, transparent) 26%,
      transparent 52%);
}

/* Ohne Bewegungswunsch bleibt das Standbild stehen */
@media (prefers-reduced-motion: reduce) {
  .hero__video { display: none; }
  .hero__media {
    background: url("../img/hero-poster.jpg") 68% center / cover no-repeat;
  }
}

/* Auf Mobil laeuft der Hero unten kraeftiger aus, damit die Buttons
   nicht auf den Linien liegen. */
@media (max-width: 900px) {
  .hero__media::after {
    background:
      linear-gradient(to bottom,
        transparent 30%,
        color-mix(in srgb, var(--c-warmwhite) 70%, transparent) 52%,
        var(--c-warmwhite) 82%);
  }
}

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

.hero__eyebrow {
  font-size: var(--fs-label);
  letter-spacing: .28em; text-transform: uppercase;
  color: var(--c-steel);
  margin-bottom: clamp(1rem, 2vw, 1.75rem);
}

.hero__title {
  font-size: var(--fs-hero);
  line-height: .88;
  letter-spacing: -.045em;
  font-weight: 500;
  color: var(--c-primary);
  margin-bottom: clamp(1.25rem, 2.5vw, 2rem);
}

.hero__subtitle {
  font-size: var(--fs-lead);
  color: var(--c-ink);
  max-width: 58ch;
  line-height: 1.45;
  margin-bottom: clamp(1.75rem, 3vw, 2.75rem);
}

/* Fester Umbruch: Fachtitel oben, Rollen darunter */
.hero__line { display: block; }

/* Senkrechter Trennstrich in Textfarbe statt hellem Punkt.
   Das <i> bleibt visuell verborgen, damit kopierter Text und
   Screenreader trotzdem eine Trennung bekommen. */
.hero__sep {
  display: inline-block;
  width: 1px; height: .9em;
  background: currentColor;
  vertical-align: -.07em;
  margin-inline: .7em;
  overflow: hidden;
}
.hero__sep i {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* Zwischen den beiden Zeilen braucht es nur mobil einen Strich */
.hero__sep--fold { display: none; }

@media (max-width: 640px) {
  .hero__line { display: inline; }
  .hero__sep--fold { display: inline-block; }
}

.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.hero__scroll {
  position: absolute; right: var(--gutter); bottom: clamp(3rem, 8vw, 6rem);
  display: flex; align-items: center; gap: .9rem;
  font-size: var(--fs-label); letter-spacing: .2em; text-transform: uppercase;
  color: var(--c-steel);
}
.hero__scroll-line {
  display: block; width: 64px; height: 1px;
  background: var(--c-stone);
  position: relative; overflow: hidden;
}
.hero__scroll-line::after {
  content: ""; position: absolute; inset: 0;
  background: var(--c-primary);
  animation: scrollhint 2.4s var(--ease) infinite;
}
@keyframes scrollhint {
  0%   { transform: translateX(-100%); }
  55%  { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

/* =========================================================
   SEKTIONEN
   ========================================================= */

.section { padding-block: var(--section-y); }

.section--klinik { background: color-mix(in srgb, var(--c-lightblue) 42%, var(--c-warmwhite)); }

.section__head {
  max-width: 62ch;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.section__label {
  font-size: var(--fs-label);
  letter-spacing: .28em; text-transform: uppercase;
  color: var(--c-steel);
  margin-bottom: 1.25rem;
  display: flex; align-items: center; gap: .9rem;
}
.section__label::after {
  content: ""; flex: 1; height: 1px; max-width: 5rem;
  background: var(--c-stone);
}

.section__title {
  font-size: var(--fs-h2);
  line-height: 1.02;
  letter-spacing: -.035em;
  font-weight: 500;
  color: var(--c-primary);
  text-wrap: balance;
}

.section__intro {
  font-size: var(--fs-lead);
  color: var(--c-muted);
  margin-top: 1.5rem;
  line-height: 1.55;
}

/* ---------- Profil ---------- */

.profil__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.profil__text > p + p { margin-top: 1.5rem; }
.profil__text .lead {
  font-size: var(--fs-lead);
  color: var(--c-primary);
  line-height: 1.5;
}

.profil__figure { position: relative; }
.profil__figure::before {
  content: ""; position: absolute;
  inset: -1.25rem -1.25rem auto auto;
  width: 62%; aspect-ratio: 1;
  border: 1px solid var(--c-stone);
  z-index: -1;
}
.profil__figure img {
  width: 100%;
  filter: grayscale(0);
  transition: filter .8s var(--ease);
}
.profil__figure:hover img { filter: grayscale(1) contrast(1.03); }
.profil__figure figcaption {
  margin-top: 1rem;
  font-size: var(--fs-label);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--c-steel);
}


/* ---------- Karten ---------- */

.cards { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--c-warmwhite);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color .5s var(--ease), box-shadow .5s var(--ease);
}
.card:hover {
  border-color: var(--c-steel);
  box-shadow: 0 24px 60px -32px color-mix(in srgb, var(--c-primary) 45%, transparent);
}

.card__media {
  display: block;
  overflow: hidden;
  background: var(--c-lightblue);
  border-bottom: 1px solid var(--c-line);
  aspect-ratio: 16 / 10;
}
.card__media img {
  width: 100%; height: 100%;
  /* Links bündig: Logo und Headline der Projektseiten bleiben lesbar,
     abgeschnitten wird nur rechts. */
  object-fit: cover; object-position: top left;
  /* transform-origin steht hier und nicht erst in :hover, sonst springt
     der Ankerpunkt beim Verlassen abrupt zur Mitte zurueck, waehrend die
     Groesse noch zurueckanimiert - das erzeugte den Ruckler. */
  transform-origin: top left;
  transition: transform .7s cubic-bezier(.25, .1, .25, 1);
}
.card:hover .card__media img { transform: scale(1.04); }

.card__body {
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  display: flex; flex-direction: column;
  gap: .85rem;
  flex: 1;
}

.card__role {
  font-size: var(--fs-label);
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--c-steel);
}

.card__title {
  font-size: var(--fs-h3);
  font-weight: 500;
  letter-spacing: -.02em;
  line-height: 1.15;
  color: var(--c-primary);
}
.card__title a { transition: color .3s var(--ease); }
.card__title a:hover { color: var(--c-accent); }

.card__text { color: var(--c-muted); }

.card__link {
  margin-top: auto;
  font-size: var(--fs-label);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-accent);
  display: inline-flex; align-items: center; gap: .5rem;
}
.card__link::after {
  content: ""; width: 1.5rem; height: 1px;
  background: currentColor;
  transition: width .4s var(--ease);
}
.card__link:hover { color: var(--c-primary); }
.card__link:hover::after { width: 3rem; }
.card:hover .card__link::after { width: 2.5rem; }

.card--wide { margin-top: 2rem; }
.card--wide .card__media { aspect-ratio: 21 / 9; }

/* ---------- Timeline ---------- */

.timeline {
  position: relative;
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  padding-left: clamp(1.75rem, 4vw, 3rem);
  max-width: 78ch;
}
.timeline::before {
  content: ""; position: absolute;
  left: 0; top: .6rem; bottom: .6rem;
  width: 1px; background: var(--c-stone);
  transform-origin: top;
}

.timeline__item { position: relative; }
.timeline__item::before {
  content: ""; position: absolute;
  left: calc(-1 * clamp(1.75rem, 4vw, 3rem) - 3.5px);
  top: .55rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-warmwhite);
  border: 1px solid var(--c-primary);
}

.timeline__title {
  font-size: var(--fs-h3);
  font-weight: 500; letter-spacing: -.02em;
  color: var(--c-primary);
  margin-bottom: .85rem;
}
.timeline__item p { color: var(--c-muted); }

/* =========================================================
   KONTAKT
   ========================================================= */

.section--kontakt { background: color-mix(in srgb, var(--c-lightblue) 42%, var(--c-warmwhite)); }

.kontakt__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.kontakt__intro .btn { margin-top: 2rem; }

.form {
  background: var(--c-warmwhite);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 3.5vw, 3rem);
  display: grid; gap: 1.5rem;
}

.form__honeypot {
  position: absolute !important;
  width: 1px; height: 1px; opacity: 0; pointer-events: none;
}

.field { display: grid; gap: .55rem; }

.field label {
  font-size: var(--fs-label);
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--c-steel);
}

.field input,
.field textarea {
  font: inherit;
  color: var(--c-ink);
  background: transparent;
  border: 0; border-bottom: 1px solid var(--c-stone);
  border-radius: 0;
  padding: .7rem 0;
  transition: border-color .4s var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--c-primary);
}
.field textarea { resize: vertical; min-height: 8rem; }

/* Fehlerzustand: erst sichtbar, sobald ein Feld als ungueltig markiert ist */
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-bottom-color: var(--c-accent);
}

.field__error {
  display: none;
  font-size: .8125rem;
  color: var(--c-accent);
}
.field__error:not(:empty) { display: block; }

.form__status {
  font-size: .9375rem;
  min-height: 1.4em;
  margin: 0;
}
.form__status.is-ok    { color: var(--c-primary); }
.form__status.is-error { color: var(--c-accent); }

/* =========================================================
   FOOTER
   ========================================================= */

.footer {
  border-top: 1px solid var(--c-line);
  padding-block: clamp(2rem, 4vw, 3rem);
}
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  font-size: var(--fs-label);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--c-steel);
}
.footer__inner a:hover { color: var(--c-primary); }

/* =========================================================
   BEWEGUNG
   Alle Regeln haengen an .js-anim. Ohne JavaScript oder bei
   reduzierter Bewegung greift nichts davon und die Seite ist
   sofort vollstaendig sichtbar.
   ========================================================= */

/* ---------- Einblenden ---------- */

.js-anim [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity   .85s var(--ease) calc(var(--i, 0) * 90ms),
    transform .85s var(--ease) calc(var(--i, 0) * 90ms);
}
.js-anim [data-reveal].is-visible { opacity: 1; transform: none; }

/* Nur Deckkraft, fuer Elemente die ihr transform selbst brauchen (Karten) */
.js-anim [data-fade] {
  opacity: 0;
  transition: opacity .9s var(--ease) calc(var(--i, 0) * 110ms);
}
.js-anim [data-fade].is-visible { opacity: 1; }

/* ---------- Überschriften Wort für Wort ---------- */

.word {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  /* Platz fuer Unterlaengen, sonst schneidet overflow sie ab */
  padding-bottom: .14em;
  margin-bottom: -.14em;
}
.js-anim .word__in {
  display: inline-block;
  transform: translateY(112%);
  transition: transform 1s var(--ease) calc(var(--i, 0) * 75ms);
}
.js-anim [data-split].is-visible .word__in { transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav__logo-text { display: none; }

  .profil__grid,
  .kontakt__grid { grid-template-columns: minmax(0, 1fr); }

  .profil__figure { max-width: 420px; }

  .cards--2 { grid-template-columns: minmax(0, 1fr); }


  .hero__scroll { display: none; }
}

@media (max-width: 520px) {
  .btn { width: 100%; }
  .hero__actions { flex-direction: column; align-items: stretch; }
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}