/* Perimeter Access Solutions — perimeteraccessusa.com
   Mid-century PAS identity: charcoal ink, terracotta accent, cream field. */

:root {
  --font-display: 'Big Shoulders Display', 'Archivo Narrow', 'Arial Narrow', sans-serif;
  --font-body: 'Archivo', 'Helvetica Neue', Arial, sans-serif;

  --text-xs: clamp(0.72rem, 0.68rem + 0.2vw, 0.8rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2.25rem, 1.4rem + 2.5vw, 3.5rem);
  --text-door: clamp(3.5rem, 2rem + 6.8vw, 8rem);
  --text-hero: clamp(2.4rem, 1.4rem + 3.6vw, 4.6rem);

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --container: 1240px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 180ms var(--ease-out);
  --t-slow: 700ms var(--ease-out);

  --terracotta: #b8532a;
  --terracotta-deep: #93401f;
  --cream: #efe6d0;
  --cream-2: #e6dcc2;
  --ink: #141414;
  --ink-2: #2b2a28;
}

:root,
[data-theme='light'] {
  color-scheme: light;
  --color-bg: var(--cream);
  --color-surface: #f6f0e2;
  --color-surface-2: var(--cream-2);
  --color-text: var(--ink);
  --color-text-muted: #5c5750;
  --color-primary: var(--terracotta);
  --color-primary-strong: var(--terracotta-deep);
  --color-border: rgb(20 20 20 / 0.16);
  --color-border-strong: rgb(20 20 20 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --color-bg: #171614;
    --color-surface: #1f1d1a;
    --color-surface-2: #292622;
    --color-text: var(--cream);
    --color-text-muted: #b5ab97;
    --color-primary: #d0673a;
    --color-primary-strong: #e07a4c;
    --color-border: rgb(239 230 208 / 0.16);
    --color-border-strong: rgb(239 230 208 / 0.5);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul[role='list'] {
  margin: 0;
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--ink);
  color: var(--cream);
  font-weight: 600;
  text-decoration: none;
}

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

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

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-4) var(--gutter);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  min-width: 0;
}

.brand__mark {
  width: 40px;
  height: 32px;
  flex: none;
  color: var(--color-text);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.brand__sub {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
}

.header-actions a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast), color var(--t-fast);
}

.header-actions a:hover {
  border-color: currentColor;
  color: var(--color-primary);
}

.header-actions__phone {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
}

@media (max-width: 720px) {
  .header-actions__mail {
    display: none;
  }
  .brand__sub {
    display: none;
  }
  .brand__name {
    font-size: 1rem;
    white-space: nowrap;
  }
}

/* ---------- Intro (compact, doors are the stage) ---------- */
.intro {
  padding: clamp(1.5rem, 3.5vh, 2.5rem) var(--gutter);
}

.intro__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--space-2) var(--space-12);
  align-items: end;
}

.eyebrow {
  grid-column: 1 / -1;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.intro h1 {
  font-size: clamp(2rem, 1.2rem + 2.6vw, 3.4rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  max-width: 18ch;
}

.intro__lede {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 48ch;
  text-wrap: pretty;
  padding-bottom: 0.35em;
}

@media (max-width: 860px) {
  .intro__inner {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .intro__lede {
    padding-bottom: 0;
  }
}

/* ---------- The two doors ---------- */
.doors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: clamp(580px, calc(100vh - 300px), 900px);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.door {
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  color: var(--cream);
  background: var(--ink);
  text-decoration: none;
  min-height: 520px;
}

.door + .door {
  border-left: 1px solid rgb(239 230 208 / 0.18);
}

.door__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: grayscale(0.55) sepia(0.28) contrast(1.05) brightness(0.72);
  transform: scale(1.02);
  transition: transform 1100ms var(--ease-out), filter 700ms var(--ease-out);
  will-change: transform;
}

.door--automate .door__img {
  object-position: 45% 60%;
}

.door--maintain .door__img {
  object-position: 62% 50%;
}

.door__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgb(20 20 20 / 0.94) 0%, rgb(20 20 20 / 0.72) 38%, rgb(20 20 20 / 0.25) 70%, rgb(20 20 20 / 0.1) 100%);
  transition: opacity var(--t-slow);
}

.door::after {
  /* terracotta diagonal strut, echoing the PAS mark */
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: var(--terracotta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 600ms var(--ease-out);
}

.door--maintain::after {
  transform-origin: right;
}

.door__body {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: clamp(1.75rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 640px;
}

.door__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgb(239 230 208 / 0.78);
}

.door__num {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--terracotta);
  padding-right: var(--space-3);
  border-right: 1px solid rgb(239 230 208 / 0.35);
}

.door__title {
  font-size: var(--text-door);
  font-weight: 800;
  text-transform: uppercase;
  line-height: 0.88;
  letter-spacing: 0.005em;
  color: var(--cream);
}

.door__copy {
  max-width: 46ch;
  font-size: var(--text-base);
  color: rgb(239 230 208 / 0.86);
  text-wrap: pretty;
}

.door__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: rgb(239 230 208 / 0.8);
}

.door__list li {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}

.door__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--terracotta);
  flex: none;
}

.door__cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  width: fit-content;
  min-width: min(100%, 320px);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: background var(--t-fast), color var(--t-fast);
}

.door__arrow {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--ink);
  color: var(--cream);
  transition: background var(--t-fast), transform var(--t-fast);
}

/* Hover / focus state */
@media (hover: hover) {
  .door:hover .door__img,
  .door:focus-visible .door__img {
    transform: scale(1.07);
    filter: grayscale(0.15) sepia(0.15) contrast(1.05) brightness(0.8);
  }
  .door:hover::after,
  .door:focus-visible::after {
    transform: scaleX(1);
  }
  .door:hover .door__cta,
  .door:focus-visible .door__cta {
    background: var(--terracotta);
    color: var(--cream);
  }
  .door:hover .door__arrow,
  .door:focus-visible .door__arrow {
    background: var(--ink);
    transform: translateX(4px);
  }
}

.door:focus-visible {
  outline: 4px solid var(--terracotta);
  outline-offset: -4px;
}

/* Doors stay side by side at every width; content trims down as space shrinks */
@media (max-width: 860px) {
  .doors {
    min-height: clamp(480px, 72vh, 720px);
  }
  .door {
    min-height: 480px;
  }
  .door__body {
    padding: clamp(1rem, 4vw, 1.75rem);
    gap: var(--space-3);
  }
  .door__list {
    display: none;
  }
  .door__copy {
    font-size: var(--text-sm);
  }
  .door::after {
    transform: scaleX(1);
    height: 4px;
  }
  .door__cta {
    width: 100%;
    min-width: 0;
    font-size: 1.1rem;
    padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  }
  .door__arrow {
    width: 34px;
    height: 34px;
  }
}

@media (max-width: 560px) {
  .doors {
    min-height: clamp(420px, 64vh, 600px);
  }
  .door {
    min-height: 420px;
  }
  .door__body {
    padding: 0.9rem;
  }
  .door__eyebrow {
    font-size: 0.62rem;
    letter-spacing: 0.14em;
  }
  .door__num {
    font-size: 0.9rem;
    padding-right: var(--space-2);
  }
  .door__title {
    font-size: clamp(2.1rem, 11vw, 3rem);
  }
  .door__copy {
    font-size: 0.8rem;
    line-height: 1.4;
  }
  .door__cta {
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    gap: var(--space-2);
  }
  .door__domain {
    overflow-wrap: anywhere;
  }
  .door__arrow {
    width: 30px;
    height: 30px;
    flex: none;
  }
}

/* ---------- Strip ---------- */
.strip {
  padding: clamp(3rem, 7vw, 5.5rem) var(--gutter);
}

.strip__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.strip__item {
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-text);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.strip__item h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.strip__item p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 38ch;
  text-wrap: pretty;
}

@media (max-width: 860px) {
  .strip__inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* ---------- Footer ---------- */
.footer {
  background: var(--ink);
  color: var(--cream);
  padding: var(--space-12) var(--gutter) var(--space-6);
}

.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: var(--space-8);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1;
}

.footer__tag {
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  color: rgb(239 230 208 / 0.6);
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgb(239 230 208 / 0.82);
}

.footer__col h4 {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: var(--space-2);
}

.footer__col a {
  text-decoration: none;
  width: fit-content;
  border-bottom: 1px solid rgb(239 230 208 / 0.3);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.footer__col a:hover {
  color: #fff;
  border-color: var(--terracotta);
}

.footer__bottom {
  max-width: var(--container);
  margin: var(--space-12) auto 0;
  padding-top: var(--space-4);
  border-top: 1px solid rgb(239 230 208 / 0.18);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: rgb(239 230 208 / 0.6);
}

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

@media (max-width: 520px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }
}

/* Compact intro on phones so the doors sit near the top */
@media (max-width: 560px) {
  .intro {
    padding: var(--space-4) var(--gutter) var(--space-4);
  }
  .intro h1 {
    font-size: 1.6rem;
    max-width: none;
  }
  .intro__lede {
    display: none;
  }
}