/* ==========================================================================
   bhvMD — Brain Health Volumetrics
   styles.css — mobile-first, WCAG-minded, dependency-free
   ========================================================================== */

:root {
  /* Brand */
  --color-coral: #FF6B8A;
  --color-coral-warm: #FF8A6B;
  --color-brand-gradient: linear-gradient(135deg, #FF6B8A 0%, #FF8A6B 100%);
  --color-teal: #1FA6A6;
  --color-teal-dark: #178787;
  --color-fern: #829b3b; /* headacheMD brand fern green for "MD" */
  --color-ink: #152030;
  --color-ink-soft: #3A4658;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F6F8FA;
  --color-border: #E2E8F0;
  --color-white: #FFFFFF;

  /* Type */
  --font-sans: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.3vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.35rem, 1.15rem + 0.9vw, 1.75rem);
  --text-2xl: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
  --text-3xl: clamp(2.1rem, 1.6rem + 2.2vw, 3.25rem);

  /* Layout */
  --container: 72rem;
  --gutter: 1rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --radius: 0.75rem;
  --radius-lg: 1.25rem;
  --shadow-sm: 0 1px 2px rgba(21, 32, 48, 0.06);
  --shadow-md: 0 8px 24px rgba(21, 32, 48, 0.08);
  --shadow-lg: 0 16px 40px rgba(21, 32, 48, 0.12);
  /* Breakpoints (documented; used via media queries):
     phone: < 600px | tablet/iPad: 600–1023px | desktop: ≥ 1024px
     nav expands at 900px */
  --bp-tablet: 600px;
  --bp-nav: 900px;
  --bp-desktop: 1024px;
  --header-h: 4.25rem;
  --logo-mark: 2.75rem; /* 44px — phone default */
  --logo-word: 1.25rem;
  --logo-tag: 0.58rem;
  --focus-ring: 0 0 0 3px rgba(31, 166, 166, 0.45);
  --transition: 180ms ease;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-ink-soft);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-teal-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: 1.2;
  font-weight: 600;
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }

p {
  margin: 0 0 var(--space-4);
}

ul {
  margin: 0 0 var(--space-4);
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.35rem;
}

.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;
}

/* headacheMD® wordmark — bold lockup, fern-green "MD", registered mark */
.brand-hmd {
  font-weight: 700;
  color: inherit;
  white-space: nowrap;
}

.brand-hmd .brand-md {
  color: var(--color-fern);
  font-weight: 700;
}

.brand-hmd .brand-reg {
  font-size: 0.65em;
  font-weight: 600;
  line-height: 0;
  vertical-align: super;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 1000;
  background: var(--color-ink);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-4);
}

.container {
  width: min(100% - (2 * var(--gutter)), var(--container));
  margin-inline: auto;
}

.section {
  padding: clamp(2.5rem, 5vw, var(--space-8)) 0;
}

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

.section__eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: var(--space-3);
}

.section__lead {
  font-size: var(--text-lg);
  max-width: 40rem;
  color: var(--color-ink-soft);
}

.section__header {
  margin-bottom: var(--space-7);
  max-width: 40rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.7rem 1.35rem;
  border-radius: 999px;
  border: 2px solid transparent;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-brand-gradient);
  color: var(--color-white);
  box-shadow: 0 8px 20px rgba(255, 107, 138, 0.28);
}

.btn--primary:hover {
  color: var(--color-white);
  box-shadow: 0 12px 28px rgba(255, 107, 138, 0.36);
}

.btn--secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-teal);
  color: var(--color-teal-dark);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.16);
  color: var(--color-white);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-h);
  padding-top: var(--safe-top);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.site-header__inner {
  min-height: var(--header-h);
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: 0.35rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
  color: var(--color-ink);
}

.logo__mark {
  height: var(--logo-mark);
  width: auto;
  flex-shrink: 0;
}

.logo__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.12rem;
  line-height: 1.05;
  min-width: 0;
}

.logo__wordmark {
  font-family: var(--font-sans);
  font-size: var(--logo-word);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #0e2a3d;
}

.logo__md {
  color: var(--color-teal);
}

.logo__tm {
  font-size: 0.55em;
  font-weight: 600;
  margin-left: 0.05em;
  color: #0e2a3d;
}

.logo__tagline {
  font-family: var(--font-sans);
  font-size: var(--logo-tag);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #5b6b76;
}

.logo__tagline sup {
  font-size: 0.7em;
}

/* Scrolling status banner (pattern aligned with hmdhou.com) */
.moving-banner {
  background: #fff;
  border-bottom: 1px solid rgba(21, 32, 48, 0.08);
  overflow: hidden;
  white-space: nowrap;
}

.moving-banner__track {
  display: inline-flex;
  align-items: center;
  gap: 4rem;
  padding: 0.65rem 0;
  width: max-content;
  will-change: transform;
  animation: movingBannerScroll 42s linear infinite;
}

.moving-banner__text {
  flex: 0 0 auto;
  color: #c62828;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

@keyframes movingBannerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .moving-banner__track {
    animation: none;
    padding-inline: 1rem;
    /* Still one line; allow horizontal scroll instead of wrapping */
    overflow-x: auto;
  }
}
.nav {
  display: none;
  align-items: center;
  gap: var(--space-5);
}

.nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-sm);
}

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

.nav__cta {
  margin-left: var(--space-2);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  cursor: pointer;
  padding: 0;
}

.nav-toggle__bars {
  position: relative;
  width: 1.15rem;
  height: 0.9rem;
}

.nav-toggle__bars span,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), top var(--transition);
}

.nav-toggle__bars span {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.nav--open {
  display: flex;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: var(--space-4);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav--open a {
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius);
}

.nav--open a:hover {
  background: var(--color-bg-soft);
}

.nav--open .nav__cta {
  margin: var(--space-3) 0 0;
  width: 100%;
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .nav {
    display: flex;
    position: static;
    flex-direction: row;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .nav--open { /* no-op on desktop */ }
  .nav__cta { width: auto; }
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(4rem, 8vw, 6.5rem);
  background:
    radial-gradient(ellipse 80% 60% at 85% 20%, rgba(255, 107, 138, 0.12), transparent 55%),
    radial-gradient(ellipse 70% 50% at 10% 80%, rgba(31, 166, 166, 0.1), transparent 50%),
    var(--color-bg);
}

.hero__motif {
  display: none; /* phones: hide decorative motif for clarity */
  position: absolute;
  right: -8%;
  top: 5%;
  width: min(52vw, 34rem);
  opacity: 0.9;
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero__copy {
  max-width: 36rem;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.hero__brand .tm {
  font-size: 0.65em;
  vertical-align: super;
  color: var(--color-teal);
}

.hero__tagline {
  color: var(--color-teal);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-4);
}

.hero__panel {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(6px);
}

.hero__panel h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.hero__stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.hero__stats li {
  margin: 0;
  padding-left: var(--space-4);
  border-left: 3px solid transparent;
  border-image: var(--color-brand-gradient) 1;
}

.hero__stats strong {
  display: block;
  color: var(--color-ink);
  font-size: var(--text-sm);
  margin-bottom: 0.15rem;
}

.hero__stats span {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* Services */
.services-grid {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 600px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(31, 166, 166, 0.35);
}

.service-card__icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, rgba(255, 107, 138, 0.14), rgba(31, 166, 166, 0.12));
  color: var(--color-teal);
}

.service-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.service-card h3 {
  margin-bottom: var(--space-2);
}

.service-card__summary {
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  flex-grow: 0;
}

.service-card ul {
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
  flex-grow: 1;
  color: var(--color-ink-soft);
}

.service-card .btn {
  align-self: flex-start;
}

.service-detail {
  margin-top: var(--space-7);
  display: grid;
  gap: var(--space-5);
}

.service-detail__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.service-detail__item h3 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.service-detail__item h3::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-brand-gradient);
  flex-shrink: 0;
}

/* How it works */
.steps {
  display: grid;
  gap: var(--space-4);
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 600px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
  }
}

.step {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  counter-increment: step;
}

.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  background: var(--color-brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-3);
}

.step h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.step p {
  font-size: var(--text-sm);
  margin: 0;
}

/* About */
.about-grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

@media (min-width: 900px) {
  .about-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.about-aside {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.about-aside h3 {
  color: var(--color-white);
}

.about-aside p {
  font-size: var(--text-sm);
}

.about-aside .meta {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: var(--text-sm);
}

.about-aside a {
  color: #7ED4D4;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: var(--space-3);
  max-width: 48rem;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--color-ink);
  padding: var(--space-4) var(--space-5);
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-teal);
  font-weight: 700;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item p {
  margin: 0;
  padding: 0 var(--space-5) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* Contact */
.contact-grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.contact-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
}

.contact-list li {
  margin: 0 0 var(--space-4);
}

.contact-list strong {
  display: block;
  color: var(--color-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.form {
  display: grid;
  gap: var(--space-4);
}

.form__row {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 600px) {
  .form__row {
    grid-template-columns: 1fr 1fr;
  }
}

.form label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.form .req {
  color: var(--color-coral);
}

.form input,
.form select,
.form textarea {
  width: 100%;
  font: inherit;
  color: var(--color-ink);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form input:hover,
.form select:hover,
.form textarea:hover {
  border-color: #cbd5e1;
}

.form textarea {
  min-height: 8rem;
  resize: vertical;
}

.form__note {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  margin: 0;
}

.form__status {
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  display: none;
}

.form__status.is-visible {
  display: block;
}

.form__status--ok {
  background: rgba(31, 166, 166, 0.12);
  color: var(--color-teal-dark);
}

.form__status--err {
  background: rgba(255, 107, 138, 0.12);
  color: #b83250;
}

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.78);
  padding: var(--space-7) 0 var(--space-6);
}

.site-footer a {
  color: #A8E8E8;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer__top {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }
}

.footer__logo img {
  height: 48px;
  width: auto;
  margin-bottom: var(--space-3);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__nav li { margin: 0; }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
  font-size: var(--text-xs);
}

.disclaimer {
  color: rgba(255, 255, 255, 0.62);
  max-width: 48rem;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

/* ==========================================================================
   Responsive viewport management
   Phone (<600) → tablet/iPad (600–1023) → desktop (≥1024)
   Nav expands at 900px; iPad portrait keeps hamburger when <900.
   ========================================================================== */

/* --- Phone / small (default already mobile-first) --- */
@media (max-width: 379px) {
  .logo__tagline {
    display: none; /* ultra-narrow: wordmark + icon only */
  }

  .logo {
    gap: 0.45rem;
  }

  .btn-row .btn {
    width: 100%;
  }
}

@media (max-width: 599px) {
  :root {
    --gutter: 1rem;
    --header-h: 4.25rem;
    --logo-mark: 2.75rem;
    --logo-word: 1.25rem;
    --logo-tag: 0.55rem;
  }

  .moving-banner__text {
    font-size: 0.8125rem;
  }

  .moving-banner__track {
    animation-duration: 55s; /* slower on small screens for readability */
  }

  .hero {
    padding: 2.25rem 0 3rem;
  }

  .hero__panel {
    padding: var(--space-5);
  }

  .btn {
    min-height: 2.875rem; /* ≥44px touch target */
  }

  .nav--open a {
    min-height: 2.75rem;
    display: flex;
    align-items: center;
  }

  .service-detail__item,
  .contact-card,
  .about-aside {
    padding: var(--space-5);
  }
}

/* --- Tablet / iPad portrait & small landscape --- */
@media (min-width: 600px) and (max-width: 1023px) {
  :root {
    --gutter: 1.5rem;
    --header-h: 4.75rem;
    --logo-mark: 3.25rem; /* 52px */
    --logo-word: 1.45rem;
    --logo-tag: 0.65rem;
  }

  .hero__motif {
    display: block;
    width: min(42vw, 22rem);
    opacity: 0.55;
  }

  .hero__panel {
    padding: var(--space-5) var(--space-6);
  }

  /* iPad portrait (<900): hamburger; landscape 1024+ handled below */
  .about-grid {
    grid-template-columns: 1fr;
  }
}

/* Tablet landscape / large iPad where nav is still collapsed (900–1023) */
@media (min-width: 900px) and (max-width: 1023px) {
  .nav {
    gap: var(--space-3);
  }

  .nav a {
    font-size: 0.8125rem;
  }

  .nav__cta {
    padding-inline: 1rem;
    min-height: 2.5rem;
    font-size: 0.8125rem;
  }

  .about-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

/* --- Desktop --- */
@media (min-width: 1024px) {
  :root {
    --gutter: 2rem;
    --header-h: 5rem;
    --logo-mark: 3.75rem; /* 60px */
    --logo-word: 1.7rem;
    --logo-tag: 0.72rem;
  }

  .hero__motif {
    display: block;
    opacity: 0.9;
  }

  .hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

/* Large / wide desktop */
@media (min-width: 1280px) {
  :root {
    --container: 76rem;
  }
}

/* Very wide — keep line lengths readable */
@media (min-width: 1440px) {
  :root {
    --container: 80rem;
  }
}

/* Short landscape phones (e.g. phone rotated) */
@media (max-height: 480px) and (orientation: landscape) {
  :root {
    --header-h: 3.5rem;
    --logo-mark: 2.25rem;
    --logo-word: 1.1rem;
  }

  .logo__tagline {
    display: none;
  }

  .hero {
    padding: 1.5rem 0 2rem;
  }

  .moving-banner__track {
    padding: 0.4rem 0;
  }
}

/* High-DPI: keep raster logos crisp via devicePixelRatio (browser default) —
   ensure logos never upscale past intrinsic size awkwardly */
.logo__mark,
.footer__logo img {
  image-rendering: auto;
  max-height: var(--logo-mark, 3.75rem);
}

.footer__logo img {
  height: var(--logo-mark);
}

/* Print: simplify layout */
@media print {
  .site-header,
  .moving-banner,
  .nav-toggle,
  .hero__motif {
    position: static;
    animation: none !important;
  }

  .nav {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #444;
  }

  a[href^="#"]::after,
  a[href^="tel:"]::after,
  a[href^="mailto:"]::after {
    content: "";
  }
}