/* ==========================================================================
   E-Props Aviation — Design System
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f8;
  --color-text: #14181d;
  --color-text-muted: #5b6472;
  --color-accent: #d72324;
  --color-accent-dark: #b01d1e;
  --color-line: #e4e7eb;
  --color-dark: #10131a;
  --color-dark-alt: #1b202a;
  --color-on-dark: #f5f6f8;
  --color-on-dark-muted: #9aa5b1;

  --font-heading: "Sora", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  --container-max: 1200px;
  --radius: 4px;
  --transition: 220ms ease;
}

/* ---- Reset ---- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ---- Layout ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.section {
  padding: var(--space-7) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.section--dark .eyebrow,
.section--dark p {
  color: var(--color-on-dark-muted);
}

.section-head {
  max-width: 640px;
  margin: 0 auto var(--space-5);
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--space-2);
}

.section-head p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-line);
}

.btn--outline:hover {
  background: var(--color-text);
  color: #fff;
  border-color: var(--color-text);
}

.section--dark .btn--outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.section--dark .btn--outline:hover {
  background: #fff;
  color: var(--color-dark);
  border-color: #fff;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: var(--space-3) 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  padding: var(--space-2) 0;
  box-shadow: 0 1px 0 var(--color-line);
}

.wordmark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.wordmark span {
  color: var(--color-accent);
}

.wordmark img {
  height: 58px;
  width: auto;
  display: block;
  transition: height var(--transition);
}

.site-header.is-scrolled .wordmark img {
  height: 42px;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: nowrap;
}

.nav-links {
  display: flex;
  gap: 20px;
  flex-wrap: nowrap;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-bottom: 4px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--color-accent);
}

.nav-links a.active {
  padding: 6px 14px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
}

.nav-links > li {
  position: relative;
  flex-shrink: 0;
}

.caret {
  color: var(--color-text-muted);
  transition: transform var(--transition);
}

.nav-item.has-dropdown:hover .caret,
.nav-item.has-dropdown:focus-within .caret {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, 4px);
  min-width: 220px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: 0 20px 40px -16px rgba(16, 19, 26, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 10;
}

.nav-item.has-dropdown:hover .dropdown,
.nav-item.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.dropdown li a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  white-space: nowrap;
}

.dropdown li a:hover {
  background: var(--color-bg-alt);
  color: var(--color-accent);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-cta .btn {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  display: block;
}

@media (max-width: 1024px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(320px, 80vw);
    background: #fff;
    flex-direction: column;
    padding: 96px var(--space-4) var(--space-4);
    gap: var(--space-3);
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.08);
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-cta .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 4px 0 4px 16px;
    margin-top: 4px;
  }

  .nav-item.has-dropdown .caret {
    display: none;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: 160px 0 var(--space-7);
  background: var(--color-bg-alt);
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2rem, 3.6vw, 3rem);
  margin-bottom: var(--space-3);
}

.hero-copy h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-copy p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 480px;
  margin-bottom: var(--space-4);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 64px -24px rgba(16, 19, 26, 0.35);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.hero-media figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(0deg, rgba(16, 19, 26, 0.75), transparent);
  color: #fff;
  font-size: 0.82rem;
}

@media (max-width: 860px) {
  .hero {
    padding: 128px 0 var(--space-6);
  }
  .hero .container {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

/* ==========================================================================
   Slogan band
   ========================================================================== */

.slogan-band {
  padding: var(--space-5) 0;
  text-align: center;
}

.slogan-box {
  display: inline-block;
  padding: var(--space-4) var(--space-6);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  background: var(--color-bg-alt);
}

.slogan-band .slogan {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 3rem);
  letter-spacing: -0.01em;
  line-height: 1.05;
  color: var(--color-text);
}

.slogan-band .slogan em {
  font-style: normal;
  color: var(--color-accent);
}

/* ==========================================================================
   Value props
   ========================================================================== */

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.value-card {
  padding: var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  text-align: left;
  transition: border-color var(--transition);
}

a.value-card:hover {
  border-color: var(--color-accent);
}

.value-card .icon {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.value-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-1);
}

.value-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

@media (max-width: 960px) {
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .value-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Split feature (ASCALON highlight / Why dedicated range)
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

.split--reverse .split-media {
  order: 2;
}

.split-media img {
  border-radius: var(--radius);
  box-shadow: 0 24px 64px -32px rgba(16, 19, 26, 0.3);
}

.split-copy h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: var(--space-2);
}

.split-copy p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  font-size: 1.02rem;
}

.split-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-4);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.split-specs dt {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.split-specs dd {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.02rem;
}

.elias-badge {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.elias-badge svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  margin-top: 2px;
}

.elias-badge a {
  color: var(--color-accent);
  font-weight: 600;
}

.elias-badge a:hover {
  color: var(--color-accent-dark);
}

@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .split--reverse .split-media {
    order: 0;
  }
}

/* ==========================================================================
   Technology teaser
   ========================================================================== */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.tech-item {
  padding: var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
}

.tech-item h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-1);
  color: #fff;
}

.tech-item p {
  font-size: 0.92rem;
}

@media (max-width: 700px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Certification status
   ========================================================================== */

.status-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.status-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-line);
}

.status-row .tag {
  flex: 0 0 auto;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}

.tag--progress {
  background: #fdecec;
  color: var(--color-accent-dark);
}

.tag--live {
  background: #e8f3ec;
  color: #1f7a45;
}

.status-row p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.status-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: var(--space-3);
}

/* ==========================================================================
   Contact CTA band
   ========================================================================== */

.cta-band {
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--space-2);
}

.cta-band p {
  color: var(--color-on-dark-muted);
  max-width: 560px;
  margin: 0 auto var(--space-4);
  font-size: 1.05rem;
}

.cta-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-dark);
  color: var(--color-on-dark-muted);
  padding: var(--space-6) 0 var(--space-4);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .wordmark {
  color: #fff;
}

.footer-brand .footer-tagline {
  margin-top: 6px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.footer-brand p {
  margin-top: var(--space-2);
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: var(--space-2);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-4);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer-bottom a {
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.3);
  text-underline-offset: 2px;
}

.footer-bottom a:hover {
  color: #fff;
}

@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Page intro banner (non-home pages)
   ========================================================================== */

.page-intro {
  padding: 160px 0 var(--space-6);
  background: var(--color-bg-alt);
  text-align: center;
}

.page-intro .eyebrow {
  display: block;
}

.page-intro h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-2);
}

.page-intro p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.subsection-head {
  max-width: 720px;
  margin: 0 auto var(--space-4);
  text-align: center;
}

.subsection-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin-bottom: var(--space-1);
}

.subsection-head p {
  color: var(--color-text-muted);
}

[id] {
  scroll-margin-top: 96px;
}

/* ==========================================================================
   Aircraft / facility cards
   ========================================================================== */

.aircraft-grid,
.facility-grid {
  display: grid;
  gap: var(--space-3);
}

.aircraft-grid {
  grid-template-columns: repeat(2, 1fr);
}

.facility-grid {
  grid-template-columns: repeat(3, 1fr);
}

.media-card {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.media-card .body {
  padding: var(--space-3);
}

.media-card h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.media-card .tagline {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.media-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .aircraft-grid,
  .facility-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Numbered steps
   ========================================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.step {
  padding: var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: var(--space-2);
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-1);
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

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

/* ==========================================================================
   Callout (historical reference, notes)
   ========================================================================== */

.callout {
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-alt);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  margin: var(--space-4) 0;
}

.callout h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  margin-bottom: var(--space-1);
}

.callout p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.callout p + p {
  margin-top: var(--space-1);
}

.scope-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: var(--space-2) var(--space-3);
  background: #fdecec;
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-4);
}

.scope-note svg {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
}

/* ==========================================================================
   Models grid
   ========================================================================== */

.feature-model {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-5);
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}

.feature-model .split-media img {
  border-radius: var(--radius);
}

.soon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.soon-card {
  border: 1px dashed var(--color-line);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.soon-card .tag {
  align-self: flex-start;
  margin-bottom: var(--space-2);
}

.soon-card h3 {
  font-size: 1.2rem;
}

.soon-card .soon-meta {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.soon-card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

@media (max-width: 960px) {
  .feature-model {
    grid-template-columns: 1fr;
    padding: var(--space-4);
  }
  .soon-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Diagram placeholder
   ========================================================================== */

.diagram-tool {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--color-bg);
}

.diagram-tool .diagram-fields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.diagram-tool label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.unit-toggle {
  display: flex;
  gap: var(--space-3);
  padding: 10px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-bg-alt);
}

.unit-toggle label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0;
  cursor: pointer;
}

.unit-toggle input {
  accent-color: var(--color-accent);
}

.diagram-tool select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.92rem;
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.diagram-svg-wrap {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.diagram-svg {
  width: 100%;
  height: auto;
  aspect-ratio: 768 / 384;
  display: block;
}

.diagram-svg .pcu,
.diagram-svg .cone,
.diagram-svg .flasque,
.diagram-svg .pale {
  fill: none;
  stroke: var(--color-text);
  stroke-width: 1.4;
  stroke-linejoin: round;
}

.diagram-svg .esa {
  fill: rgba(215, 35, 36, 0.12);
  stroke: var(--color-accent);
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.diagram-svg .cote {
  stroke: var(--color-text-muted);
  stroke-width: 1;
  fill: none;
}

.diagram-svg .cote-text {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--color-text);
}

.diagram-svg polyline.cote-esa {
  stroke: var(--color-accent);
}

.diagram-svg text.cote-esa {
  fill: var(--color-accent);
  font-weight: 600;
}

.diagram-svg .label-line {
  stroke: var(--color-text-muted);
  stroke-width: 1;
  fill: none;
  stroke-dasharray: 2 2;
}

.diagram-svg .label-text {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--color-text-muted);
}

.diagram-readout {
  text-align: center;
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}

@media (max-width: 700px) {
  .diagram-tool .diagram-fields {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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