/* IKNN — Institut für Klinische Neuropsychologie & Neurotherapie
   Shared stylesheet — based on brand guidelines v1 */

:root {
  --bg: #fcfbf8;
  --surface: #f2eee3;
  --surface2: #e8e4d7;
  --ink: #1f2a24;
  --ink2: #4a5550;
  --muted: #8a8578;
  --rule: #d9d4c6;
  --stone: #a89d8a;
  --sage: #5b7a6b;
  --sageDeep: #3d5a4c;
  --terracotta: #c87d5a;

  --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 160ms;
  --dur-base: 260ms;
  --dur-slow: 420ms;

  --max-w: 1200px;
  --nav-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ───────────────────────── Layout ───────────────────────── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 720px) { .container { padding: 0 40px; } }
@media (min-width: 1040px) { .container { padding: 0 64px; } }

.section { padding: 80px 0; }
@media (min-width: 720px) { .section { padding: 112px 0; } }
@media (min-width: 1040px) { .section { padding: 144px 0; } }

.section--tight { padding: 56px 0; }
@media (min-width: 720px) { .section--tight { padding: 80px 0; } }

.section--surface { background: var(--surface); }
.section--ink { background: var(--ink); color: var(--bg); }
.section--ink h1, .section--ink h2, .section--ink h3 { color: var(--bg); }
.section--ink p { color: rgba(252, 251, 248, 0.78); }

.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}

/* ───────────────────────── Typography ───────────────────────── */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.3px;
  line-height: 1.05;
  margin: 0 0 16px;
  color: var(--ink);
}

.display-xl {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(44px, 7.5vw, 80px);
  line-height: 0.98;
  letter-spacing: -1.2px;
  margin: 0 0 24px;
}
.display-xl em { color: var(--sage); font-style: italic; font-weight: 500; }

.display-l {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.0;
  letter-spacing: -0.8px;
  margin: 0 0 20px;
}
.display-l em { color: var(--sage); font-style: italic; font-weight: 500; }

.display-m {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.5px;
  margin: 0 0 16px;
}
.display-m em { color: var(--sage); font-style: italic; }

.display-s {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.3px;
  margin: 0 0 12px;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 18px;
}
.eyebrow--muted { color: var(--muted); }

.lede {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.45;
  color: var(--ink2);
  max-width: 56ch;
  margin: 0 0 24px;
}

p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink2);
  margin: 0 0 16px;
  max-width: 68ch;
}
p.large { font-size: 17px; line-height: 1.6; color: var(--ink); }

.text-accent { color: var(--sage); font-style: italic; font-family: var(--font-display); }

ul, ol { padding-left: 20px; margin: 0 0 16px; color: var(--ink2); }
ul li, ol li { margin-bottom: 8px; font-size: 15px; line-height: 1.6; }
ul.plain { list-style: none; padding: 0; }
ul.plain li { padding: 14px 0; border-top: 1px solid var(--rule); }
ul.plain li:last-child { border-bottom: 1px solid var(--rule); }

blockquote {
  margin: 0;
  padding: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.35;
  color: var(--ink);
  max-width: 24ch;
}

/* ───────────────────────── Navigation ───────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(252, 251, 248, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__logo { display: flex; align-items: center; height: 32px; }
.nav__logo img { height: 32px; width: auto; }

.nav__links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 28px;
  align-items: center;
}
@media (min-width: 1040px) { .nav__links { display: flex; } }
.nav__links a {
  font-size: 13px;
  color: var(--ink);
  letter-spacing: 0.1px;
  position: relative;
  padding: 4px 0;
  transition: color var(--dur-fast) var(--ease);
}
.nav__links a:hover { color: var(--sage); }
.nav__links a.is-active { color: var(--sage); }
.nav__links a.is-active::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--sage);
}

.nav__cta {
  display: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--bg);
  transition: background var(--dur-base) var(--ease);
}
@media (min-width: 1040px) { .nav__cta { display: inline-block; } }
.nav__cta:hover { background: var(--sageDeep); }

.nav__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  gap: 5px;
}
@media (min-width: 1040px) { .nav__burger { display: none; } }
.nav__burger span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
  transition: transform var(--dur-base) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-3px) rotate(-45deg); }

.nav__drawer {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: var(--bg);
  padding: 32px 24px 80px;
  overflow-y: auto;
  border-top: 1px solid var(--rule);
}
.nav__drawer.is-open { display: block; }
.nav__drawer ul { list-style: none; padding: 0; margin: 0; }
.nav__drawer a {
  display: block;
  padding: 18px 0;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}
.nav__drawer a:hover, .nav__drawer a.is-active { color: var(--sage); }
.nav__drawer .nav__cta {
  display: inline-block;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 22px;
  background: var(--ink);
  color: var(--bg);
}

/* ───────────────────────── Buttons ───────────────────────── */

.btn {
  display: inline-block;
  padding: 14px 22px;
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 500;
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
  transition: background var(--dur-base) var(--ease), color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
  cursor: pointer;
}
.btn:hover { background: var(--sageDeep); border-color: var(--sageDeep); }

.btn--secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn--secondary:hover { background: var(--ink); color: var(--bg); }

.btn--on-ink {
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--bg);
}
.btn--on-ink:hover { background: transparent; color: var(--bg); }

.btn--ghost {
  background: transparent;
  color: var(--sage);
  padding: 6px 0;
  border: 0;
  letter-spacing: 1px;
  position: relative;
}
.btn--ghost::after {
  content: '';
  display: block;
  height: 1px;
  background: var(--sage);
  margin-top: 4px;
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease);
}
.btn--ghost:hover::after { transform: scaleX(0.6); }

.btn-group { display: flex; flex-wrap: wrap; gap: 12px; }

/* ───────────────────────── Hero ───────────────────────── */

.hero {
  padding: 96px 0 72px;
  position: relative;
}
@media (min-width: 720px) { .hero { padding: 120px 0 96px; } }
@media (min-width: 1040px) { .hero { padding: 140px 0 120px; } }

.hero__grid {
  display: grid;
  gap: 56px;
  grid-template-columns: 1fr;
  align-items: end;
}
@media (min-width: 1040px) {
  .hero__grid { grid-template-columns: 1.15fr 1fr; gap: 80px; }
}

.hero__visual {
  aspect-ratio: 4 / 5;
  background: var(--surface);
  position: relative;
  overflow: hidden;
  max-width: 100%;
}
.hero__visual--hatch {
  background-image:
    repeating-linear-gradient(
      135deg,
      rgba(31, 42, 36, 0.06) 0,
      rgba(31, 42, 36, 0.06) 1px,
      transparent 1px,
      transparent 8px
    );
  background-color: var(--surface);
}
.hero__visual-caption {
  position: absolute;
  bottom: 16px; left: 16px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ───────────────────────── Grid patterns ───────────────────────── */

.grid { display: grid; gap: 32px; }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr 1fr; }
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: 1fr 1fr; }
  .grid--3 { grid-template-columns: 1fr 1fr; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (min-width: 1040px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* Split layout: narrow intro + wide content */
.split {
  display: grid;
  gap: 48px;
  grid-template-columns: 1fr;
}
@media (min-width: 1040px) {
  .split { grid-template-columns: 1fr 1.8fr; gap: 80px; }
}

/* ───────────────────────── Cards ───────────────────────── */

.card {
  background: var(--surface);
  border-top: 2px solid var(--sage);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}
.card__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.card__title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin: 0 0 4px;
}
.card__body { font-size: 14px; line-height: 1.6; color: var(--ink2); margin: 0; }

.card--bare {
  background: transparent;
  border-top: 1px solid var(--rule);
  padding: 24px 0;
}

/* Tag */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--ink2);
  padding: 4px 10px;
  border: 1px solid var(--rule);
  background: var(--bg);
}

.tag--sage { color: var(--sage); border-color: var(--sage); }
.tag--open {
  color: var(--terracotta);
  border-color: var(--terracotta);
}

/* ───────────────────────── Stats ───────────────────────── */

.stats {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }

.stat__n {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 500;
  letter-spacing: -1px;
  line-height: 1;
  color: var(--sage);
  margin: 0 0 10px;
}
.stat__n em { font-style: italic; }
.stat__l {
  font-size: 12px;
  line-height: 1.45;
  color: var(--ink2);
  max-width: 22ch;
}

/* ───────────────────────── Callout / Quote ───────────────────────── */

.callout {
  background: var(--ink);
  color: var(--bg);
  padding: 48px 32px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
}
@media (min-width: 720px) { .callout { padding: 64px 56px; gap: 40px; } }
.callout__mark {
  font-family: var(--font-display);
  font-size: clamp(80px, 10vw, 140px);
  line-height: 0.7;
  color: var(--sage);
}
.callout__text {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.3px;
}
.callout__text em { color: var(--sage); font-style: italic; }
.callout__attr {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(252, 251, 248, 0.65);
  margin-top: 16px;
}

/* ───────────────────────── Module / Timeline ───────────────────────── */

.module {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}
@media (min-width: 720px) { .module { gap: 48px; grid-template-columns: 160px 1fr; } }
.module:last-of-type { border-bottom: 1px solid var(--rule); }
.module__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sage);
  padding-top: 6px;
}
.module__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.3px;
  margin: 0 0 8px;
}
.module__desc { font-size: 14px; color: var(--ink2); margin: 0 0 12px; max-width: 60ch; }
.module__chips { display: flex; flex-wrap: wrap; gap: 8px; }

/* ───────────────────────── Person card ───────────────────────── */

.person {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}
.person__portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--surface);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(31, 42, 36, 0.05) 0,
    rgba(31, 42, 36, 0.05) 1px,
    transparent 1px,
    transparent 8px
  );
  position: relative;
}
.person__portrait-initials {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 56px;
  color: var(--stone);
  font-style: italic;
}
.person__role {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sage);
}
.person__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
  margin: 0;
}
.person__bio { font-size: 14px; color: var(--ink2); line-height: 1.6; margin: 0; }

/* ───────────────────────── Footer ───────────────────────── */

.footer {
  background: var(--ink);
  color: var(--bg);
  padding: 80px 0 32px;
}
.footer__grid {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; }
}
.footer__brand img { height: 40px; margin-bottom: 16px; }
.footer__brand p { color: rgba(252, 251, 248, 0.65); font-size: 14px; max-width: 30ch; }
.footer h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(252, 251, 248, 0.55);
  font-weight: 500;
  margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 10px; }
.footer a {
  color: rgba(252, 251, 248, 0.82);
  font-size: 14px;
  transition: color var(--dur-fast) var(--ease);
}
.footer a:hover { color: var(--sage); }

.footer__meta {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid rgba(252, 251, 248, 0.12);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(252, 251, 248, 0.45);
}

/* ───────────────────────── Forms ───────────────────────── */

.form { display: grid; gap: 16px; }
.form__row { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .form__row { grid-template-columns: 1fr 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.field input, .field textarea, .field select {
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 12px 14px;
  transition: border-color var(--dur-fast) var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--sage);
}
.field textarea { min-height: 120px; resize: vertical; }

/* ───────────────────────── Utility ───────────────────────── */

.center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-60 { max-width: 60ch; }
.mt-0 { margin-top: 0; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mt-64 { margin-top: 64px; }
.mb-0 { margin-bottom: 0; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-48 { margin-bottom: 48px; }

/* Thin horizontal rule accent */
.accent-line {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--sage);
  margin: 0 0 20px;
}

/* Skip to content for accessibility */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
}
.skip:focus {
  left: 16px;
  top: 16px;
  background: var(--ink);
  color: var(--bg);
  padding: 12px 18px;
  z-index: 200;
}

/* Prevent layout shift */
.hidden { display: none !important; }

/* ───────────────────────── Page-specific: details table ───────────────────────── */

.kv {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.kv__row {
  display: grid;
  grid-template-columns: 1fr;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  gap: 4px;
}
@media (min-width: 720px) {
  .kv__row { grid-template-columns: 200px 1fr; gap: 24px; }
}
.kv__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 3px;
}
.kv__v { font-size: 15px; color: var(--ink); line-height: 1.6; }

/* Notice / callout box */
.notice {
  border-left: 2px solid var(--sage);
  padding: 16px 20px;
  background: var(--surface);
  font-size: 14px;
  color: var(--ink2);
  margin: 24px 0;
}
.notice strong { color: var(--ink); font-weight: 600; }

/* ───────────────────────── Kontakt additions ───────────────────────── */

.mt-8 { margin-top: 8px; }

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--ink);
  line-height: 1.6;
}

.btn--link {
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0;
  text-transform: none;
  border-bottom: 1px solid var(--sage);
  padding-bottom: 2px;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.btn--link:hover { color: var(--sage); border-color: var(--ink); }

/* Checkbox row */
.check {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 14px;
  color: var(--ink2);
  line-height: 1.5;
  cursor: pointer;
}
.check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--sage);
}

/* Inverted form (for dark section) */
.form--inverted .field label { color: rgba(252, 251, 248, 0.6); }
.form--inverted .field input,
.form--inverted .field select,
.form--inverted .field textarea {
  background: transparent;
  color: var(--bg);
  border-color: rgba(252, 251, 248, 0.28);
}
.form--inverted .field input::placeholder,
.form--inverted .field textarea::placeholder { color: rgba(252, 251, 248, 0.35); }
.form--inverted .field input:focus,
.form--inverted .field select:focus,
.form--inverted .field textarea:focus { border-color: var(--sage-light, #8fae9f); }
.form--inverted .check { color: rgba(252, 251, 248, 0.78); }

/* Inverted button */
.btn--inverted {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}
.btn--inverted:hover { background: transparent; color: var(--bg); border-color: var(--bg); }

/* 
.small { font-size: 13px; line-height: 1.55; }
.muted { color: var(--muted); }