/* ==========================================================================
   frederikdaneels.com — design system
   "Technical drawing meets editorial."
   Set in Fraunces (display serif), Inter (body sans), JetBrains Mono (technical).
   Accent: patina (oxidized copper) #3E7C6F.
   ========================================================================== */

:root {
  /* COLOR */
  --paper: #F6F1E7;          /* warm off-white background */
  --paper-deep: #ECE4D2;     /* slightly deeper paper for surfaces */
  --ink: #15171A;            /* near-black text */
  --ink-soft: #44474D;       /* muted body */
  --ink-faint: #8A8B8C;      /* metadata, captions */
  --rule: #15171A22;         /* hairline dividers */
  --rule-soft: #15171A14;
  --patina: #3E7C6F;         /* the rare accent */
  --patina-deep: #2F6356;
  --patina-soft: #3E7C6F1A;  /* tints */

  /* TYPE */
  --display: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'IBM Plex Mono', 'Menlo', monospace;

  /* SCALE — reduced ~25% from v1 */
  --t-mono: 11px;
  --t-mono-lg: 12px;
  --t-body: 16px;
  --t-body-lg: 18px;
  --t-mid: clamp(22px, 2.6vw, 32px);
  --t-disp: clamp(30px, 4.4vw, 60px);
  --t-hero: clamp(36px, 6vw, 88px);

  /* SPACE */
  --gutter: clamp(20px, 4vw, 56px);
  --section-y: clamp(72px, 9vw, 144px);
  --max: 1280px;

  /* GRID */
  --grid-step: 24px;
}

/* ==========================================================================
   RESET / BASE
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--t-body);
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Subtle blueprint grid texture — visible only at attention */
  background-image:
    linear-gradient(to right, var(--rule-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule-soft) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  background-position: 0 0;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--patina);
  outline-offset: 3px;
}

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

.skip {
  position: absolute; left: -9999px; top: 0; padding: 8px 16px; background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: var(--t-mono); z-index: 100;
}
.skip:focus { left: 16px; top: 16px; }

.container {
  max-width: var(--max);
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  margin: 0 auto;
  width: 100%;
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
  gap: 24px;
}
.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1;
}
.brand-mono {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.14em;
  color: var(--ink);
}
.brand-mono + .brand-mono { margin-top: 3px; color: var(--patina); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.14em;
  color: var(--ink);
  text-decoration: none;
  position: relative;
  padding: 6px 0;
}
.nav-link:hover { color: var(--patina); }
.nav-cta {
  color: var(--patina);
  border: 1px solid var(--patina);
  padding: 8px 14px;
  transition: background 120ms ease;
}
.nav-cta:hover {
  background: var(--patina);
  color: var(--paper);
}
@media (max-width: 720px) {
  .site-nav { gap: 16px; }
  .nav-link:not(.nav-cta) { display: none; }
}

/* ==========================================================================
   SECTION SCAFFOLDING
   ========================================================================== */

.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  position: relative;
}
.section + .section {
  border-top: 1px solid var(--rule);
}
.section-label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 36px;
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.16em;
  color: var(--ink);
}
.section-num {
  color: var(--patina);
  font-weight: 500;
}
.section-name {
  color: var(--ink);
}

.hairline {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 40px 0;
}
.hairline.subtle {
  border-top: 1px solid var(--rule-soft);
  margin: 56px 0;
}

/* ==========================================================================
   TYPOGRAPHY — DISPLAY
   ========================================================================== */

.display {
  font-family: var(--display);
  font-size: var(--t-hero);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 500;
  margin: 0 0 0.4em;
  max-width: 16ch;
}
.display em {
  font-style: italic;
  color: var(--patina);
  font-weight: 500;
}
.display-line {
  display: block;
}

.heading-display {
  font-family: var(--display);
  font-size: var(--t-disp);
  line-height: 1.04;
  letter-spacing: -0.028em;
  font-weight: 500;
  margin: 0 0 0.6em;
  max-width: 22ch;
}
.heading-display .muted {
  color: var(--ink-faint);
  font-style: italic;
  font-weight: 400;
}

.heading-mid {
  font-family: var(--display);
  font-size: var(--t-mid);
  line-height: 1.18;
  font-weight: 500;
  margin: 0 0 0.4em;
  letter-spacing: -0.02em;
}

/* Body text */
.lede {
  font-size: var(--t-body-lg);
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 1em;
  max-width: 56ch;
}
.prose p {
  margin: 0 0 1em;
  color: var(--ink-soft);
  max-width: 60ch;
}
.prose p.meta {
  font-family: var(--mono);
  font-size: var(--t-mono-lg);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  line-height: 1.6;
  margin-top: 1.2em;
}
.muted { color: var(--ink-faint); }

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

.section-hero {
  padding-top: clamp(56px, 8vw, 120px);
}
.section-hero .display em {
  letter-spacing: -0.038em;
}
.hero-foot {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
  max-width: 980px;
}
@media (max-width: 720px) {
  .hero-foot { grid-template-columns: 1fr; gap: 28px; }
}

/* ==========================================================================
   TECHNICAL LINK (used as CTA, instead of marketing buttons)
   ========================================================================== */

.link-tech {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  text-decoration: none;
  color: var(--ink);
  border-top: 1px solid var(--ink);
  padding-top: 14px;
  width: fit-content;
  transition: color 120ms ease, border-color 120ms ease;
}
.link-tech:hover {
  color: var(--patina);
  border-top-color: var(--patina);
}
.link-tech-num {
  font-family: var(--mono);
  font-size: var(--t-mono-lg);
  align-self: center;
  grid-row: 1 / span 2;
  color: var(--patina);
}
.link-tech-label {
  font-family: var(--display);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.15;
}
.link-tech-meta {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 2px;
}
.link-tech.inline {
  border-top: none;
  padding-top: 0;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
}

/* ==========================================================================
   GEAR / FLOW MOTIF
   ========================================================================== */

.motif {
  margin-top: 80px;
  color: var(--patina);
  width: 100%;
  height: auto;
  max-width: 460px;
}
.motif-flow { max-width: 720px; margin-top: 56px; }
.motif-label {
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.2em;
  fill: var(--ink-faint);
}

/* ==========================================================================
   GRIDS
   ========================================================================== */

.grid {
  display: grid;
  gap: clamp(28px, 5vw, 80px);
}
.grid-who {
  grid-template-columns: 1fr 1fr;
  align-items: start;
}
.grid-2 {
  grid-template-columns: 1fr 1fr;
}
.grid-heart {
  grid-template-columns: 1.1fr 1fr;
  align-items: start;
}
.grid-why {
  grid-template-columns: 1.1fr 1fr;
  align-items: start;
}
@media (max-width: 860px) {
  .grid-who, .grid-2, .grid-heart, .grid-why {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   PRACTICE BLOCKS (the two-act spec)
   ========================================================================== */

.practice-block {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
}
.practice-num {
  font-family: var(--mono);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1;
  color: var(--patina);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding-top: 6px;
}
.practice-body p {
  color: var(--ink-soft);
  max-width: 64ch;
  margin: 0 0 0.9em;
}
.practice-body p.meta {
  font-family: var(--mono);
  font-size: var(--t-mono-lg);
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  margin-top: 1.4em;
}
.spec-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 8px;
  border-top: 1px solid var(--rule-soft);
}
.spec-list li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--ink);
  align-items: baseline;
}
.spec-key {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.14em;
  color: var(--patina);
  text-transform: uppercase;
}
@media (max-width: 720px) {
  .practice-block { grid-template-columns: 1fr; gap: 16px; }
  .practice-num { font-size: 40px; }
}

/* ==========================================================================
   WHO-IT'S-FOR LISTS
   ========================================================================== */

.col-label {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.18em;
  color: var(--patina);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--patina);
}
.col-label.opposite {
  color: var(--ink-faint);
  border-bottom-color: var(--rule);
}
.check-list, .cross-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.check-list li, .cross-list li {
  position: relative;
  padding-left: 28px;
  padding-top: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--ink-soft);
}
.check-list li::before {
  content: "+";
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--mono);
  color: var(--patina);
  font-weight: 500;
}
.cross-list li::before {
  content: "−";
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--mono);
  color: var(--ink-faint);
  font-weight: 500;
}

/* ==========================================================================
   STEPS
   ========================================================================== */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--rule-soft);
  align-items: start;
}
.step:last-child { border-bottom: 1px solid var(--rule-soft); }
.step-num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--patina);
  padding-top: 6px;
}
.step-body p {
  margin: 0 0 0.6em;
  color: var(--ink-soft);
  max-width: 60ch;
}
.step-meta {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin: 0 0 1em !important;
}
@media (max-width: 720px) {
  .step { grid-template-columns: 1fr; gap: 12px; }
}

/* ==========================================================================
   HEART LAYER SECTION
   ========================================================================== */

.section-heart {
  background: var(--paper-deep);
}
.section-heart .heading-display {
  color: var(--ink);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 0;
}
.faq-q {
  display: grid;
  grid-template-columns: 56px 1fr 32px;
  align-items: baseline;
  gap: 18px;
  padding: 24px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.3;
  color: var(--ink);
  transition: color 120ms ease;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q:hover { color: var(--patina); }
.faq-num {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.16em;
  color: var(--patina);
  font-weight: 500;
  align-self: center;
}
.faq-q-text {
  font-weight: 500;
}
.faq-toggle {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 400;
  color: var(--patina);
  text-align: right;
  align-self: center;
  transition: transform 200ms ease;
  display: inline-block;
}
.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
}
.faq-a {
  display: grid;
  grid-template-columns: 56px 1fr 32px;
  gap: 18px;
  padding: 0 0 28px;
}
.faq-a::before { content: ""; }
.faq-a p {
  grid-column: 2 / 3;
  margin: 0;
  color: var(--ink-soft);
  max-width: 64ch;
  font-size: var(--t-body);
  line-height: 1.6;
}
@media (max-width: 720px) {
  .faq-q, .faq-a { grid-template-columns: 36px 1fr 24px; gap: 12px; }
  .faq-a p { grid-column: 2 / 3; }
}

/* ==========================================================================
   CONTACT FORM
   ========================================================================== */

.contact-fallback {
  max-width: 720px;
  margin-top: 24px;
  padding: 28px 32px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--patina);
  background: color-mix(in srgb, var(--patina) 4%, transparent);
}
.fallback-meta {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.16em;
  color: var(--patina);
  margin: 0 0 12px;
  text-transform: uppercase;
}
.fallback-prose {
  margin: 0 0 20px;
  color: var(--ink-soft);
  font-size: var(--t-body);
}
.fallback-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form {
  max-width: 760px;
  margin-top: 24px;
}
.contact-form[hidden] {
  display: none;
}
.field {
  display: block;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 14px;
  position: relative;
}
.field label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 8px;
}
.field-num {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.18em;
  color: var(--patina);
  text-transform: uppercase;
}
.field-label {
  font-family: var(--sans);
  font-size: var(--t-body);
  font-weight: 500;
  color: var(--ink);
}
.field-meta {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: uppercase;
  font-weight: 400;
  margin-left: 8px;
}
.field input, .field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 0;
  padding: 8px 0;
  font-family: var(--sans);
  font-size: var(--t-body);
  color: var(--ink);
  resize: vertical;
}
.field input:focus, .field textarea:focus {
  outline: none;
}
.field:focus-within {
  border-bottom-color: var(--patina);
}
.hp { position: absolute; left: -9999px; top: -9999px; width: 1px; height: 1px; overflow: hidden; }

.cf-turnstile {
  margin: 24px 0 32px;
  min-height: 65px;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}
.link-tech.submit {
  background: transparent;
  border: 0;
  border-top: 1px solid var(--ink);
  cursor: pointer;
  text-align: left;
  font: inherit;
}
.link-tech.submit:hover {
  border-top-color: var(--patina);
  color: var(--patina);
}
.form-status {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin: 0;
  text-transform: uppercase;
}
.form-status.error { color: #B23A2E; }
.form-status.success { color: var(--patina); }

/* ==========================================================================
   LEGAL PAGES (Impressum, Privacy)
   ========================================================================== */

.section-legal {
  padding-top: clamp(56px, 7vw, 96px);
  padding-bottom: clamp(72px, 9vw, 120px);
}
.container-legal {
  max-width: 760px;
}
.legal-title {
  font-family: var(--display);
  font-size: var(--t-disp);
  line-height: 1.04;
  letter-spacing: -0.028em;
  font-weight: 500;
  margin: 0 0 8px;
}
.legal-meta {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
}
.legal-block {
  margin: 0 0 40px;
  padding-bottom: 8px;
}
.legal-block + .legal-block {
  border-top: 1px solid var(--rule-soft);
  padding-top: 32px;
}
.legal-h2 {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--display);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--ink);
}
.legal-h2-num {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.14em;
  color: var(--patina);
  font-weight: 500;
}
.legal-block p {
  margin: 0 0 14px;
  color: var(--ink-soft);
  line-height: 1.65;
}
.legal-block p strong {
  color: var(--ink);
  font-weight: 500;
}
.legal-block a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: color 120ms ease, text-decoration-color 120ms ease;
}
.legal-block a:hover {
  color: var(--patina);
  text-decoration-color: var(--patina);
}
.legal-list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
}
.legal-list li {
  position: relative;
  padding: 8px 0 8px 24px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule-soft);
  line-height: 1.6;
}
.legal-list li:last-child { border-bottom: none; }
.legal-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  top: 8px;
  color: var(--patina);
  font-family: var(--mono);
  font-weight: 500;
}

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

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 56px 0 72px;
  background: var(--paper);
}
.footer-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  align-items: start;
}
.foot-block { margin: 0; line-height: 1.5; font-size: 14px; }
.foot-mono {
  font-family: var(--mono);
  font-size: var(--t-mono);
  letter-spacing: 0.16em;
  color: var(--patina);
}
.muted-link { color: var(--ink-soft); text-decoration: none; border-bottom: 1px solid var(--rule); }
.muted-link:hover { color: var(--patina); border-bottom-color: var(--patina); }

@media (max-width: 860px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* ==========================================================================
   PRINT (because architects print)
   ========================================================================== */

@media print {
  .site-header, .site-nav, .motif, .cf-turnstile, .form-foot { display: none; }
  body { background: white; color: black; background-image: none; }
}