/* ==========================================================================
   Martin Languillé — Portfolio
   Design tokens
   ========================================================================== */
:root {
  --ac: #FF6B2C;
  --ac-text: #B8410F;   /* accent lisible sur fond clair : 5.52:1 sur #fff, 4.99:1 sur --bg */
  --bg: #F5F3F0;
  --ink: #14110F;
  --ink-soft: #3A342F;
  --muted: #5A534D;
  --border: #E4DFD8;

  --dark-bg: #14110F;
  --dark-text: #F5F3F0;
  --dark-muted: #8C837B;
  --dark-muted-2: #A8A09A;
  --dark-border: #2A2521;
  --dark-border-2: #332D28;
  --dark-surface: #1B1714;

  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 24px;

  --font-display: 'Anybody', sans-serif;
  --font-body: 'Instrument Sans', system-ui, sans-serif;
  --font-mono: 'Space Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: var(--ac-text); text-decoration: none; }
a:hover { color: var(--ink); }
p { text-wrap: pretty; margin: 0; }
img { max-width: 100%; }
::selection { background: var(--ac); color: var(--ink); }
:focus-visible {
  outline: 2px solid var(--ac);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(20,17,15,.35);
}

.wrap { max-width: 1400px; margin: 0 auto; padding-inline: clamp(18px, 4vw, 56px); }
.wrap-narrow { max-width: 1200px; margin: 0 auto; padding-inline: clamp(18px, 4vw, 48px); }

@keyframes bandeau { from { transform: translateX(0); } to { transform: translateX(-50%); } }

[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(245,243,240,.82);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap,
.site-header .wrap-narrow {
  padding-block: 14px;
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 44px);
  flex-wrap: wrap;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
}
.back-link:hover { color: var(--ac); }

.project-counter {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 32px);
  flex-wrap: wrap;
  margin-left: auto;
  font-size: 14px;
}

.nav a:not(.btn) { color: var(--ink); font-weight: 500; transition: color .25s; }
.nav a:not(.btn):hover { color: var(--ac); }
.nav a.is-active { color: var(--ac); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--bg);
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: background .25s, transform .25s;
}
.btn:hover { background: var(--ac); color: var(--ink); transform: translateY(-1px); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { padding-top: clamp(26px, 3.5vw, 52px); }

.hero h1 {
  margin: clamp(10px, 1.8vw, 22px) 0 0;
  font-family: var(--font-display);
  font-variation-settings: 'wdth' 112;
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(3.1rem, 13.2vw, 11.5rem);
  line-height: .84;
  letter-spacing: -.035em;
}
.hero h1 .outline {
  display: block;
  color: transparent;
  -webkit-text-stroke: clamp(1px, .16vw, 2.4px) var(--ink);
}
.hero h1 .fill { display: block; }
.hero .dot { color: var(--ac); }

.hero-row {
  display: flex;
  align-items: flex-end;
  gap: clamp(20px, 3vw, 48px);
  flex-wrap: wrap;
  margin-top: clamp(-18px, -1.5vw, 0px);
}

.hero-intro {
  flex: 1 1 300px;
  min-width: min(100%, 280px);
  padding-bottom: clamp(4px, 1.2vw, 16px);
}
.hero-intro .role {
  margin: 0 0 12px;
  font-size: clamp(19px, 1.8vw, 24px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.3;
}
.hero-intro .pitch {
  max-width: 48ch;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.55;
  color: var(--muted);
}

.hero-photo-frame {
  position: relative;
  z-index: 3;
  flex: 0 1 clamp(230px, 29vw, 400px);
  margin: 0 auto;
  align-self: flex-end;
}
.hero-photo-frame::before {
  content: '';
  position: absolute;
  left: -7%; right: 11%; top: -5%; bottom: 14%;
  border: 1px solid var(--ac);
  border-radius: 999px 999px 18px 18px;
  opacity: .5;
}
.hero-photo-frame .photo {
  position: relative;
  border-radius: 999px 999px 18px 18px;
  overflow: hidden;
  background: linear-gradient(180deg, #FFE7DA, var(--bg));
  box-shadow: 0 50px 90px -46px rgba(20,17,15,.5);
}
.hero-photo-frame img { display: block; width: 100%; height: auto; }

/* ==========================================================================
   Marquee band
   ========================================================================== */
.marquee {
  position: relative;
  margin-top: clamp(20px, 3vw, 40px);
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 16px 0;
  overflow: hidden;
}
.marquee-track { display: flex; width: max-content; animation: bandeau 38s linear infinite; }
.marquee:hover .marquee-track,
.marquee:focus-within .marquee-track,
.marquee.is-paused .marquee-track { animation-play-state: paused; }
.marquee-toggle {
  position: absolute;
  top: 50%;
  right: clamp(18px, 4vw, 56px);
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid rgba(245, 243, 240, .28);
  border-radius: 999px;
  background: var(--dark-bg);
  box-shadow: -16px 0 16px 10px var(--dark-bg);
  color: var(--dark-text);
  cursor: pointer;
  transition: border-color .25s, color .25s;
}
.marquee-toggle:hover { border-color: var(--ac); color: var(--ac); }
.marquee-toggle svg { display: block; width: 10px; height: 10px; fill: currentColor; }
.marquee-toggle .icon-play { display: none; }
.marquee.is-paused .marquee-toggle .icon-pause { display: none; }
.marquee.is-paused .marquee-toggle .icon-play { display: block; }
.marquee-group {
  display: flex;
  align-items: center;
  gap: 26px;
  padding-right: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  white-space: nowrap;
}
.marquee-group .sep { color: var(--ac); opacity: .7; }

/* ==========================================================================
   Section headings
   ========================================================================== */
.section { padding-block: clamp(44px, 5.5vw, 88px); }
.section-dark { background: var(--dark-bg); color: var(--dark-text); }

.section h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-variation-settings: 'wdth' 108;
  font-weight: 700;
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -.03em;
}
.section h2 .slash { color: var(--ac); }
.section h2.heading-center { text-align: center; }

/* ==========================================================================
   About
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,300px), 1fr));
  gap: clamp(22px, 3vw, 44px);
  align-items: start;
}
.about-grid p { margin: 0 0 16px; font-size: clamp(17px, 1.45vw, 20px); line-height: 1.58; color: var(--ink-soft); max-width: 58ch; }
.about-grid p:last-child { margin-bottom: 0; }

.goal-card {
  background: var(--dark-bg);
  color: var(--dark-text);
  border-radius: var(--r-lg);
  padding: clamp(26px, 3vw, 40px);
  position: relative;
  overflow: hidden;
}
.goal-card .eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ac);
}
.goal-card p.goal-text {
  margin: 14px 0 0;
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.28;
  letter-spacing: -.02em;
  font-weight: 500;
  color: var(--dark-text);
}
.goal-card .badges {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pill-outline {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  padding: 7px 12px;
  border: 1px solid var(--dark-border-2);
  border-radius: 999px;
  color: #C8C0B9;
}

/* ==========================================================================
   Experience
   ========================================================================== */
.experience-item {
  border-top: 1px solid var(--dark-border);
  padding-block: clamp(22px, 2.6vw, 34px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,280px), 1fr));
  gap: clamp(22px, 3vw, 52px);
}
.experience-item:last-child { border-bottom: 1px solid var(--dark-border); }
.experience-item .logo { display: block; height: clamp(36px, 3.4vw, 48px); width: auto; max-width: 100%; margin-bottom: 20px; }
.experience-item .logo.logo-lg { height: clamp(58px, 5.2vw, 76px); }
.experience-item .meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ac);
}
.experience-item .title {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.1vw, 27px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.24;
}
.experience-item .desc {
  margin: 0 0 20px;
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.58;
  color: var(--dark-muted-2);
  max-width: 56ch;
}
.experience-item .tags { display: flex; gap: 9px; flex-wrap: wrap; }
.tag-outline {
  font-size: 14px;
  padding: 8px 15px;
  border: 1px solid var(--dark-border-2);
  border-radius: 999px;
  color: #E0D9D2;
}
.experience-item .diploma-col { display: flex; align-items: flex-end; }
.diploma-label { font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em; color: var(--dark-muted); }

/* ==========================================================================
   Projects grid (home)
   ========================================================================== */
.projects-heading { position: relative; text-align: center; margin-bottom: clamp(22px, 3vw, 40px); }
.projects-heading .ghost-word {
  position: absolute;
  left: 50%; top: -14%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-variation-settings: 'wdth' 125;
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(3.4rem, 11vw, 9rem);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--ink);
  opacity: .05;
  white-space: nowrap;
  pointer-events: none;
}
.projects-heading h2 { position: relative; margin: 0; text-align: center; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,320px), 1fr));
  gap: clamp(18px, 2.4vw, 30px);
}

.project-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(14px, 1.6vw, 18px);
  color: var(--ink);
  transition: transform .25s cubic-bezier(.2,.7,.2,1), box-shadow .25s, border-color .25s;
}
.project-card:hover { transform: translateY(-6px); box-shadow: 0 34px 60px -34px rgba(20,17,15,.35); border-color: var(--ink); }

.project-card-window {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  aspect-ratio: 1786/881;
  background: var(--dark-bg);
  display: flex;
  flex-direction: column;
}
.project-card-window img { width: 100%; height: 100%; object-fit: cover; display: block; }

.status-badge {
  position: absolute; right: 12px; top: 12px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  padding: 6px 10px; border-radius: 999px;
}
.status-badge.done { background: var(--bg); color: var(--ink); }
.status-badge.active { background: var(--ac); color: var(--ink); }

.project-card-body { padding: 18px 8px 4px; display: flex; gap: 16px; align-items: flex-start; }
.project-card-body .eyebrow { margin: 0 0 8px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.project-card-body h3 { margin: 0 0 12px; font-size: clamp(20px, 2vw, 25px); font-weight: 600; letter-spacing: -.02em; line-height: 1.22; }
.project-card-body .tags { display: flex; gap: 7px; flex-wrap: wrap; }
.tag-light { font-size: 13px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); }
.project-card-arrow {
  flex: 0 0 auto; width: 42px; height: 42px; border-radius: 50%;
  background: var(--ink); color: var(--bg); display: grid; place-items: center; font-size: 17px;
}

/* ==========================================================================
   Skills
   ========================================================================== */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,270px), 1fr)); gap: clamp(14px, 1.8vw, 22px); }
.skill-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: clamp(22px, 2.4vw, 30px); transition: border-color .25s, transform .25s;
}
.skill-card:hover { border-color: var(--ac); transform: translateY(-4px); }
.skill-card .head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; }
.skill-card h3 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.skill-card .num { font-family: var(--font-mono); font-size: 12px; color: var(--ac-text); }
.skill-card .tags { display: flex; gap: 7px; flex-wrap: wrap; }
.tag-soft { font-size: 14px; padding: 7px 12px; background: var(--bg); border-radius: var(--r-sm); color: var(--ink-soft); }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,300px), 1fr)); gap: clamp(28px, 4vw, 56px); align-items: center; }
.contact-grid h2 {
  margin: 0 0 22px; font-family: var(--font-display); font-variation-settings: 'wdth' 112; font-weight: 800;
  text-transform: uppercase; font-size: clamp(2.3rem, 7vw, 5.6rem); line-height: .92; letter-spacing: -.035em;
}
.mail-btn {
  display: inline-flex; align-items: center; gap: 11px; background: var(--ac); color: var(--ink);
  padding: 16px 26px; border-radius: 999px; font-weight: 600; font-size: 16px; transition: transform .25s, background .25s;
}
.mail-btn:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }

.contact-links { display: flex; flex-direction: column; gap: 10px; }
.contact-link {
  display: flex; align-items: center; gap: 14px; border: 1px solid var(--dark-border); border-radius: var(--r-md);
  padding: 16px 20px; color: var(--dark-text); transition: border-color .25s, background .25s;
}
.contact-link:hover { border-color: var(--ac); background: var(--dark-surface); color: var(--dark-text); }
.contact-link img { width: 34px; height: 34px; border-radius: var(--r-sm); object-fit: cover; }
.contact-link .label { flex: 1; font-weight: 600; font-size: 16px; }
.contact-link .handle { font-family: var(--font-mono); font-size: 13px; color: var(--dark-muted-2); }
.contact-link .arrow { color: var(--ac); }

.site-footer-bar { border-top: 1px solid var(--dark-border); }
.site-footer-bar .wrap {
  padding-block: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; color: var(--dark-muted);
}

/* ==========================================================================
   Project detail pages
   ========================================================================== */
.project-status-row {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: #6B635C;
}
.project-status-row .pill { padding: 6px 12px; border-radius: 999px; }
.project-status-row .pill.done { background: var(--ink); color: var(--bg); }
.project-status-row .pill.active { background: var(--ac); color: var(--ink); }

.project-title {
  margin: clamp(18px, 2.4vw, 30px) 0 0;
  font-family: var(--font-display); font-variation-settings: 'wdth' 110; font-weight: 800;
  text-transform: uppercase; line-height: .92; letter-spacing: -.035em;
}
.project-title.title-lg { font-size: clamp(2.2rem, 7.6vw, 6rem); }
.project-title.title-md { font-size: clamp(2.1rem, 7.2vw, 5.6rem); }

.project-lede { margin: clamp(22px, 3vw, 34px) 0 0; max-width: 60ch; font-size: clamp(17px, 1.45vw, 20px); line-height: 1.58; color: var(--ink-soft); }

.project-shot {
  margin-top: clamp(30px, 4vw, 54px);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 1786/881;
  background: var(--dark-bg);
}
.project-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }

.project-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,200px), 1fr));
  gap: 1px; background: #E0DAD2; border: 1px solid #E0DAD2; border-radius: var(--r-md); overflow: hidden;
  margin-top: clamp(24px, 3vw, 40px);
}
.project-stats .stat { background: var(--bg); padding: 20px 22px; }
.project-stats .stat-label { margin: 0 0 7px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.project-stats .stat-value { margin: 0; font-size: 16px; font-weight: 600; }

.architecture-section { background: var(--dark-bg); color: var(--dark-text); margin-top: clamp(38px, 5vw, 78px); }
.architecture-section .wrap-narrow { padding-block: clamp(40px, 5vw, 80px); }
.architecture-heading { display: flex; align-items: baseline; gap: 16px; margin-bottom: clamp(20px, 3vw, 34px); }
.architecture-heading .label { margin: 0; font-family: var(--font-mono); font-weight: 400; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--dark-muted-2); }
.architecture-heading .rule { flex: 1; height: 1px; background: var(--dark-border); }

.flow-step-label { margin: 0 0 22px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--ac); }
.flow-row { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; margin-bottom: clamp(34px, 4.5vw, 56px); }
.flow-row:last-child { margin-bottom: 0; }
.flow-node { flex: 1 1 170px; border: 1px solid var(--dark-border-2); border-radius: var(--r-md); padding: 20px; }
.flow-node.highlight { border-color: var(--ac); background: var(--dark-surface); }
.flow-node .k { margin: 0 0 6px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; color: var(--dark-muted); }
.flow-node.highlight .k { color: var(--ac); }
.flow-node .v { margin: 0; font-size: 17px; font-weight: 600; }
.flow-node .d { margin: 8px 0 0; font-size: 14px; line-height: 1.5; color: var(--dark-muted-2); }
.flow-arrow { display: grid; place-items: center; color: var(--ac); font-size: 18px; min-width: 20px; }

.stack-section { padding-block: clamp(40px, 5vw, 80px); }
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,280px), 1fr)); gap: clamp(24px, 3.4vw, 56px); align-items: start; }
.stack-grid h2 { margin: 0 0 20px; font-family: var(--font-display); font-variation-settings: 'wdth' 108; font-weight: 700; font-size: clamp(1.7rem, 3.4vw, 2.6rem); line-height: 1.05; letter-spacing: -.03em; }
.stack-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag-white { font-size: 14px; padding: 8px 15px; background: #fff; border: 1px solid var(--border); border-radius: 999px; color: var(--ink-soft); }

.next-project-card {
  display: block; background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: clamp(24px, 3vw, 34px); color: var(--ink);
  transition: transform .25s cubic-bezier(.2,.7,.2,1), border-color .25s, box-shadow .25s;
}
.next-project-card:hover { transform: translateY(-5px); border-color: var(--ink); box-shadow: 0 30px 56px -34px rgba(20,17,15,.35); }
.next-project-card .eyebrow { margin: 0 0 10px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.next-project-card .title { margin: 0 0 18px; font-size: clamp(19px, 2.2vw, 26px); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; color: var(--ink); }
.next-project-card .cta { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 600; color: var(--ac-text); }

.project-footer { background: var(--dark-bg); color: var(--dark-muted); }
.project-footer .wrap-narrow {
  padding-block: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em;
}
.project-footer a { color: var(--dark-text); }
.project-footer a:hover { color: var(--ac); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 720px) {
  html { scroll-padding-top: 70px; }

  .site-header .wrap,
  .site-header .wrap-narrow { padding-block: 10px; }

  .nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    margin-inline: calc(clamp(18px, 4vw, 56px) * -1);
    padding-inline: clamp(18px, 4vw, 56px);
    gap: 18px;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { white-space: nowrap; }
}

@media (max-width: 640px) {
  .flow-row { flex-direction: column; align-items: stretch; gap: 8px; }
  .flow-arrow { transform: rotate(90deg); min-height: 20px; }
}