/* =========================================================
   Assisted Mobility Devices, LLC
   Site styles — editorial industrial
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #0A0A0A;
  --paper: #F5F1E8;
  --white: #FFFFFF;
  --navy: #0B1F3A;
  --amber: #E85D04;
  --amber-deep: #BC4A00;
  --steel: #4A5568;
  --muted: #6B7280;
  --hairline: rgba(11, 31, 58, 0.12);
  --hairline-strong: rgba(11, 31, 58, 0.28);

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --max-width: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

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

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 241, 232, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 2rem;
}
.brand {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.3;
}
.brand strong {
  display: block;
  font-weight: 600;
  color: var(--ink);
}
.brand small {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.68rem;
}

nav.primary ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
  align-items: center;
}
nav.primary a {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
  color: var(--ink);
}
nav.primary a:hover { border-color: var(--amber); color: var(--amber); }
nav.primary a.active { border-color: var(--ink); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(4rem, 10vw, 7rem);
  position: relative;
  border-bottom: 1px solid var(--hairline-strong);
}
.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--hairline);
  animation: fadeUp 0.7s ease-out 0.05s both;
}
.hero-meta span::before {
  content: "● ";
  color: var(--amber);
  font-size: 0.6rem;
  vertical-align: middle;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 9.5vw, 8rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin-bottom: 2rem;
  animation: fadeUp 0.9s ease-out 0.15s both;
}
.hero h1 em {
  font-style: italic;
  color: var(--amber);
}
.hero-lede {
  font-size: clamp(1.125rem, 1.7vw, 1.375rem);
  max-width: 44rem;
  color: var(--steel);
  margin-bottom: 2.5rem;
  animation: fadeUp 0.9s ease-out 0.3s both;
  line-height: 1.55;
}
.cta-row {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  animation: fadeUp 0.9s ease-out 0.45s both;
}

/* page subtitle hero (smaller) */
.page-hero {
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--hairline-strong);
}
.page-hero .crumbs {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.page-hero .crumbs a:hover { color: var(--amber); }
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.page-hero h1 em { font-style: italic; color: var(--amber); }
.page-hero .lede {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--steel);
  max-width: 44rem;
  line-height: 1.55;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: all 0.2s;
  cursor: pointer;
}
.btn:hover { background: var(--amber); border-color: var(--amber); color: var(--white); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.btn .arrow { transition: transform 0.2s; display: inline-block; }
.btn:hover .arrow { transform: translateX(4px); }

/* =========================================================
   SECTIONS
   ========================================================= */
section { padding: clamp(3rem, 6vw, 5.5rem) 0; }

.section-head {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline-strong);
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.015em;
  max-width: 22ch;
}
.section-title em { font-style: italic; color: var(--amber); }

/* =========================================================
   PRODUCT ROWS (home page)
   ========================================================= */
.product-row {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
  border-bottom: 1px solid var(--hairline);
  align-items: start;
}
.product-row:last-child { border-bottom: none; }
.product-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.product-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 400;
  line-height: 1.05;
  margin: 0.75rem 0 1.5rem;
  letter-spacing: -0.015em;
}
.product-row p {
  color: var(--steel);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  max-width: 50ch;
}
.product-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
  display: inline-flex;
  gap: 0.5rem;
}
.product-link:hover { color: var(--amber); border-color: var(--amber); }
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--hairline-strong);
  color: var(--steel);
  margin-bottom: 1rem;
}
.tag.amber { color: var(--amber); border-color: var(--amber); }

/* =========================================================
   FEATURES GRID
   ========================================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2.5rem 2rem;
  margin-top: 2rem;
}
.feature { padding-top: 1.75rem; border-top: 2px solid var(--ink); }
.feature-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 1rem;
}
.feature h3 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
  line-height: 1.15;
}
.feature p { color: var(--steel); font-size: 0.95rem; line-height: 1.6; }

/* =========================================================
   PRODUCT IMAGE BLOCK
   ========================================================= */
.product-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.product-feature .meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}
.product-feature h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -0.015em;
}
.product-feature p { color: var(--steel); margin-bottom: 1.25rem; }
.product-feature .img-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--navy);
}
.product-feature .img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.05) saturate(0.9);
}

/* =========================================================
   USE CASES (list)
   ========================================================= */
.use-cases {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 2rem;
  border-top: 1px solid var(--ink);
}
.use-cases li {
  display: grid;
  grid-template-columns: 4rem 1fr 2fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}
.use-cases .num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
}
.use-cases .who {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
}
.use-cases .what { color: var(--steel); font-size: 0.98rem; }

/* =========================================================
   SPEC TABLE
   ========================================================= */
.spec-table {
  margin-top: 2rem;
  border-top: 1px solid var(--ink);
}
.spec-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--hairline);
  gap: 2rem;
  align-items: baseline;
}
.spec-key {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.spec-val { font-size: 1rem; color: var(--ink); }
.spec-val em { font-style: normal; color: var(--muted); font-size: 0.85rem; }

/* =========================================================
   CTA STRIP
   ========================================================= */
.cta-strip {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 6vw, 5rem) 0;
  margin-top: 2rem;
}
.cta-strip-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: center;
}
.cta-strip h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.cta-strip h2 em { font-style: italic; color: var(--amber); }
.cta-strip .btn { background: var(--amber); border-color: var(--amber); color: var(--white); }
.cta-strip .btn:hover { background: var(--paper); border-color: var(--paper); color: var(--ink); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  margin-top: 2rem;
}
.contact-info { font-size: 1.05rem; line-height: 1.7; }
.contact-info .big {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.2;
  margin-bottom: 0.25rem;
}
.contact-info .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: 1.75rem;
  margin-bottom: 0.35rem;
}
.contact-info .label:first-child { margin-top: 0; }
.contact-info a:hover { color: var(--amber); }

form { display: flex; flex-direction: column; gap: 1.25rem; }
form .field { display: flex; flex-direction: column; gap: 0.4rem; }
form label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
form input,
form textarea,
form select {
  width: 100%;
  padding: 0.75rem 0;
  border: none;
  border-bottom: 1px solid var(--hairline-strong);
  background: transparent;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  transition: border-color 0.2s;
  border-radius: 0;
}
form input:focus,
form textarea:focus,
form select:focus {
  outline: none;
  border-bottom-color: var(--amber);
}
form textarea { resize: vertical; min-height: 7rem; line-height: 1.5; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
form button { margin-top: 1rem; align-self: flex-start; }

.map-wrap {
  margin-top: 3rem;
  border: 1px solid var(--hairline-strong);
  overflow: hidden;
  filter: grayscale(0.35) contrast(1.05);
}
.map-wrap iframe { display: block; width: 100%; height: 380px; border: 0; }

/* =========================================================
   COMING SOON / PLACEHOLDER PAGE
   ========================================================= */
.placeholder {
  padding: clamp(5rem, 14vw, 10rem) 0;
  position: relative;
}
.placeholder::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--hairline-strong);
}
.placeholder-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--amber);
  border-radius: 999px;
}
.placeholder-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
.placeholder h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 0.95;
  font-weight: 400;
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
}
.placeholder h1 em { color: var(--amber); font-style: italic; }
.placeholder p {
  font-size: 1.2rem;
  color: var(--steel);
  max-width: 40rem;
  margin-bottom: 2.5rem;
  line-height: 1.55;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 6vw, 5rem) 0 2rem;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(245,241,232,0.12);
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.15;
  max-width: 18rem;
}
.footer-brand em { color: var(--amber); font-style: italic; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245,241,232,0.55);
  margin-bottom: 1rem;
  font-weight: 500;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.55rem; font-size: 0.95rem; }
.footer-col a { transition: color 0.2s; }
.footer-col a:hover { color: var(--amber); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: rgba(245,241,232,0.5);
  text-transform: uppercase;
}

/* =========================================================
   ANIMATIONS
   ========================================================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 860px) {
  .product-feature { grid-template-columns: 1fr; }
  .product-feature .img-wrap { aspect-ratio: 16 / 10; }
  .cta-strip-inner { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; gap: 1rem; align-items: start; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 700px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem var(--gutter);
  }
  nav.primary ul { flex-wrap: wrap; gap: 1rem 1.5rem; }
  .product-row { grid-template-columns: 1fr; gap: 1rem; padding: 2rem 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .use-cases li { grid-template-columns: 3rem 1fr; gap: 1rem; }
  .use-cases .what { grid-column: 2; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-meta { gap: 0.75rem 1.25rem; }
}

::selection { background: var(--amber); color: var(--white); }