/* atelierplan.com — base styles. Grammar source: shared/design-system/ (freigegeben). */

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 1.05rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: var(--bg);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  z-index: 100;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: 1rem;
}

/* Layout */
.wrap {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-block: 1.1rem;
}
.mark {
  display: inline-flex;
  flex: none;
}
.site-header .mark {
  /* touch target >= 44px around the 30px mark */
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
}
.mark svg {
  width: 30px;
  height: 28px;
  display: block;
}
.mark .face {
  fill: none;
  stroke: var(--ink);
  stroke-width: 10;
  stroke-linejoin: round;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover {
  color: var(--ink);
}
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* Typography */
h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}
h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  margin: 0 0 0.9rem;
  text-wrap: balance;
}
h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}
p {
  margin: 0 0 1rem;
}
.reading {
  font-family: var(--font-reading);
  font-size: 1.1rem;
  max-width: 62ch;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.6rem;
}

/* Sections */
main {
  display: flex;
  flex-direction: column;
}
.section {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
}
.section:first-child,
.section--flush {
  border-top: none;
}
.section > .wrap {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Hero */
.hero {
  padding-block: clamp(3rem, 8vw, 5.5rem);
}
.hero .wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 1.1rem;
}
.hero .mark-large svg {
  width: 64px;
  height: 60px;
}
.hero .mark-large .face {
  stroke: var(--muted);
}
.hero-row {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.hero-text {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1 1 320px;
  min-width: 0;
}
.hero-sub {
  font-family: var(--font-reading);
  font-size: 1.2rem;
  max-width: 56ch;
  margin: 0;
}
.positioning {
  font-family: var(--font-reading);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--accent);
  max-width: 52ch;
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  margin: 0.5rem 0 0;
}
.positioning.plain {
  font-style: normal;
  color: var(--ink);
  border-left: none;
  padding-left: 0;
  font-size: 1.1rem;
}

/* How we work — non-linear relationship diagram */
.hexagon-diagram {
  max-width: 760px;
  width: 100%;
}
.hexagon-diagram svg { width: 100%; height: auto; }
.hexagon-diagram text {
  font-family: var(--font-ui);
  fill: var(--ink);
}
.hexagon-diagram .outer-frame {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.6;
}
.hexagon-diagram .inner-hex {
  fill: var(--accent);
  fill-opacity: 0.09;
  stroke: var(--accent);
  stroke-opacity: 0.5;
  stroke-width: 1.1;
}
.hexagon-diagram .accent-marker {
  fill: var(--surface-1);
  stroke: var(--ink);
  stroke-width: 1.5;
}

/* Service clusters */
.clusters {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}
/* Service blocks stay h2 (directly below the page h1), styled at h3 size */
.cluster h2 {
  font-weight: 500;
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}
.cluster p {
  margin: 0;
  max-width: 60ch;
}
.network-note {
  border-top: 1px dashed var(--line);
  padding-top: 1.2rem;
  color: var(--muted);
  max-width: 60ch;
}

/* CTA */
.btn {
  display: inline-block;
  appearance: none;
  background: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 0.7rem 1.3rem;
  min-height: 44px;
  width: fit-content;
  cursor: pointer;
}
.btn:hover {
  background: var(--ink);
  color: var(--bg);
}
.btn:disabled {
  color: var(--muted);
  border-color: var(--line);
  background: none;
  cursor: not-allowed;
}
.link-arrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin: 1.5rem 0 0;
}

/* Teaser rows (Home: Services / Projects) */
.teaser {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  align-items: flex-start;
}

/* Projects (reduced start version) */
.notice {
  color: var(--muted);
  max-width: 58ch;
}

/* Projects — prepared for later approved entries (markup pattern commented out in projects/index.html) */
.project-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.project-entry {
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
}
.project-meta {
  display: grid;
  grid-template-columns: minmax(6rem, max-content) 1fr;
  gap: 0.35rem 1.5rem;
  margin: 0.8rem 0 0;
}
.project-meta dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  padding-top: 0.2rem;
}
.project-meta dd {
  margin: 0;
}

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

/* Profile */
.credential {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: 0.9rem;
  max-width: 58ch;
}

/* Form */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  max-width: 480px;
}
fieldset.form-grid {
  border: 0;
  margin: 0;
  padding: 0;
  min-inline-size: 0;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.field label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
}
.field .optional {
  text-transform: none;
  letter-spacing: 0;
  font-style: italic;
}
.field input,
.field textarea {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface-1);
  border: 1px solid var(--line);
  /* Field boundary >= 3:1 against page and field background (light); lighter than --line in dark mode */
  border-color: color-mix(in srgb, var(--line) 75%, var(--ink));
  padding: 0.65rem 0.8rem;
}
.field textarea {
  min-height: 8rem;
  resize: vertical;
}
/* Inactive form: controls stay readable, clearly not editable */
.field input:disabled,
.field textarea:disabled {
  color: var(--ink);
  -webkit-text-fill-color: var(--ink);
  opacity: 1;
  cursor: not-allowed;
  resize: none;
}
.contact-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.direct-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.direct-contact dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-top: 0.8rem;
}
.direct-contact dd {
  margin: 0.1rem 0 0;
}
.direct-contact a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.form-status {
  border-left: 2px solid var(--accent-warm);
  padding-left: 1rem;
  margin: 0 0 1.5rem;
  max-width: 480px;
}
.privacy-note {
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 58ch;
  margin-top: 1.2rem;
}
.subheading {
  font-size: 1.1rem;
}

/* Legal pages: let long URLs wrap on narrow screens */
.legal-section a {
  overflow-wrap: anywhere;
}

/* Legal placeholder pages */
.placeholder-block {
  border: 1px dashed var(--muted);
  padding: 1rem 1.2rem;
  color: var(--muted);
}
.notice + .placeholder-block {
  margin-top: 1.5rem;
}
.placeholder-block + .placeholder-block {
  margin-top: 1rem;
}
.placeholder-block h2 {
  font-weight: 500;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(2rem, 5vw, 3rem);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.footer-heading {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.6rem;
}
.footer-col address {
  font-style: normal;
}
.footer-col a {
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.footer-col a:hover {
  text-decoration: underline;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.footer-col li {
  display: flex;
  align-items: center;
  min-height: 44px;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

/* Motion: functional only, reduced-motion safe by default (no continuous animation used) */
@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}