/* cartontech.com — brand palette and layout taken from the live Divi site (Phase 1). */

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-latin-var.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Syne';
  src: url('/fonts/syne-latin-var.woff2') format('woff2');
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --c-bg: #000;
  --c-surface: #0e0f13;       /* contact form panel */
  --c-text: #fff;
  --c-text-muted: rgba(255, 255, 255, 0.6);
  --c-accent: #2ea3f2;        /* active nav, links, outline button */
  --c-primary: #0c71c3;       /* primary pill button */
  --c-navy: #023047;          /* secondary pill button */
  --c-hero-tint: #1c1b3a;     /* overlay on image heroes */
  --c-input: #eee;
  --c-input-text: #333;
  --c-error: #ff6b6b;
  --c-footer: #111;

  --f-body: 'Inter', Helvetica, Arial, sans-serif;
  --f-display: 'Syne', 'Inter', Helvetica, Arial, sans-serif;

  --w-container: 1080px;
  --w-narrow: 960px;
  --header-h: 80px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 1rem); }
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font: 500 15px/1.75 var(--f-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { display: block; max-width: 100%; height: auto; }
picture { display: contents; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.2; margin: 0 0 .6em; }
p { margin: 0 0 1em; }
a { color: var(--c-accent); }
a:hover { color: #6cc1ff; }
strong { font-weight: 700; }

:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; border-radius: 2px; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link { position: absolute; left: 1rem; top: -100px; z-index: 100; background: var(--c-primary); color: #fff; padding: .6rem 1rem; border-radius: 4px; }
.skip-link:focus { top: 1rem; }

.container { width: min(90%, var(--w-container)); margin-inline: auto; }
.container--narrow { width: min(90%, var(--w-narrow)); }
.section { padding: 56px 0; }
.section__title { text-align: center; font-size: clamp(1.75rem, 3.2vw, 2.25rem); margin-bottom: 1.2em; }
.section__lead { text-align: center; font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.5; max-width: 52rem; margin: 0 auto 2.5rem; }

/* ---------- Header / nav ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: #000; height: var(--header-h); box-shadow: 0 1px 0 rgba(255,255,255,.06); }
.site-header__inner { width: min(96%, 1800px); height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.site-logo img { width: 150px; height: auto; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem 1.6rem; justify-content: flex-end; }
.site-nav a { color: var(--c-text-muted); text-decoration: none; font-size: 14px; font-weight: 600; padding: .4rem 0; display: inline-block; }
.site-nav a:hover { color: #fff; }
.site-nav a[aria-current="page"] { color: var(--c-accent); }
.nav-toggle { display: none; }

@media (max-width: 1100px) {
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; background: none; border: 0; cursor: pointer; color: var(--c-accent);
  }
  .nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
    display: block; width: 24px; height: 2px; background: currentColor; position: relative; transition: transform .2s;
  }
  .nav-toggle__bar::before, .nav-toggle__bar::after { content: ''; position: absolute; left: 0; }
  .nav-toggle__bar::before { top: -7px; }
  .nav-toggle__bar::after { top: 7px; }
  .nav-open .nav-toggle__bar { background: transparent; }
  .nav-open .nav-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
  .nav-open .nav-toggle__bar::after { transform: translateY(-7px) rotate(-45deg); }

  .js .site-nav { display: none; }
  .site-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    background: #000; border-top: 3px solid var(--c-accent); padding: 1rem 5%;
  }
  .nav-open .site-nav { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { display: block; padding: .7rem 0; border-bottom: 1px solid rgba(255,255,255,.07); font-size: 15px; }
  html:not(.js) .site-header { height: auto; position: static; }
  html:not(.js) .site-nav { position: static; border: 0; padding: 0 0 1rem; }
}

/* ---------- Heroes ---------- */
.hero { position: relative; overflow: hidden; display: flex; align-items: center; min-height: 480px; padding: 72px 0; background: #000; isolation: isolate; }
.hero__media { position: absolute; inset: 0; z-index: -1; }
.hero__media img, .hero__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero__video { opacity: 0; transition: opacity .6s; }
.hero__video.is-playing { opacity: 1; }
.hero--video .hero__media::after { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,.25); }
.hero--image .hero__media::after { content: ''; position: absolute; inset: 0; background: rgba(28,27,58,.35); }
.hero--img-technology-lighted-traces.hero--image .hero__media::after { background: rgba(0,0,0,.45); }
.hero__content { position: relative; }
.hero__kicker { font-weight: 400; line-height: 1.3; font-size: clamp(1.1rem, 1.8vw, 1.4rem); margin: 0 0 1.2rem; max-width: 52rem; margin-inline: auto; }
.hero__title { text-align: center; font-size: clamp(2.1rem, 5vw, 3.75rem); line-height: 1.15; margin: 0; text-shadow: 0 2px 18px rgba(0,0,0,.55); }
.hero--plain { min-height: 0; padding: 72px 0 24px; }
.hero--plain .hero__title { font-size: clamp(2rem, 4vw, 3rem); }
.tpl-contact .hero__title { font-weight: 500; }

.hero--home { min-height: min(78vh, 700px); }
.hero--home .hero__kicker { text-transform: uppercase; letter-spacing: .08em; font-size: 14px; font-weight: 600; }
.hero__logo { margin: 0 auto; width: min(80%, 560px); }
.hero__logo img { width: 100%; height: auto; filter: drop-shadow(0 6px 28px rgba(0,0,0,.6)); }

/* ---------- Intro ---------- */
.intro p { margin: 0; font-size: 15px; }
.intro--home { padding-bottom: 24px; }
.intro--home p { text-align: center; color: #1e88e5; font-size: clamp(1.15rem, 2.1vw, 1.55rem); line-height: 1.45; font-weight: 400; }
.tpl-service .intro p { white-space: normal; }

/* ---------- Cards ---------- */
.cards { display: grid; gap: 2.5rem 3rem; }
.cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 900px) { .cards--3 { grid-template-columns: 1fr; max-width: 34rem; margin-inline: auto; } }
.card { display: flex; flex-direction: column; font-size: 13.5px; line-height: 1.95; }
.card p { flex: 1 0 auto; margin-bottom: 1.6rem; }
.card .btn { align-self: center; }
.card--value .card__title { font-size: clamp(1.4rem, 2.2vw, 1.75rem); }
.card--service .card__title { text-align: center; font-size: 1.2rem; }
.card__media { display: flex; justify-content: center; margin-bottom: 1rem; }
.card__media img { width: auto; max-width: 100%; height: 170px; object-fit: contain; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; text-decoration: none; cursor: pointer; font: 700 13px/1.3 var(--f-body);
  padding: 9px 18px; border-radius: 100px; border: 2px solid transparent; color: #fff; transition: filter .15s, background-color .15s;
}
.btn:hover { color: #fff; filter: brightness(1.2); }
.btn--primary { background: var(--c-primary); padding: 12px 24px; font-size: 14px; }
.btn--navy { background: var(--c-navy); }
.btn--outline {
  background: transparent; border-color: var(--c-accent); color: var(--c-accent);
  border-radius: 3px; font-size: 20px; font-weight: 500; padding: 8px 20px;
}
.btn--outline:hover { background: rgba(46,163,242,.12); color: var(--c-accent); }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Problem / solution blocks ---------- */
.blocks { padding-top: 32px; }
.ps-block { margin-bottom: 64px; }
.ps-block__heading { font-family: var(--f-display); font-size: clamp(1.6rem, 3.2vw, 2.5rem); line-height: 1.2; font-weight: 500; margin-bottom: 1.1rem; }
.ps-block__row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 2.5rem; align-items: start; }
.ps-block--img-right .ps-block__row { grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); }
.ps-block--img-right .ps-block__media { order: 2; }
.ps-block__media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.ps-block__body { font-size: 13.5px; line-height: 1.95; }
@media (max-width: 700px) {
  .ps-block__row, .ps-block--img-right .ps-block__row { grid-template-columns: 1fr; gap: 1.25rem; }
  .ps-block--img-right .ps-block__media { order: 0; }
  .ps-block__media img { max-width: 260px; aspect-ratio: 16 / 10; }
}

/* ---------- CTA (PCB-trace texture) ---------- */
.cta {
  position: relative; padding: 120px 0; text-align: center; isolation: isolate;
  background: #000 url('/img/circuit-background.jpg') center / cover no-repeat;
}
@supports (background-image: image-set(url('/img/circuit-background.webp') type('image/webp'))) {
  .cta { background-image: image-set(url('/img/circuit-background.webp') type('image/webp'), url('/img/circuit-background.jpg') type('image/jpeg')); }
}
.cta::before { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,.55); z-index: -1; }
.cta__heading { font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.15; margin-bottom: 1.5rem; }
.tpl-service .cta__heading { font-family: var(--f-display); }
.cta__body { max-width: 44rem; margin: 0 auto 1.8rem; font-size: 16px; }
.tpl-features .cta { background: #000; padding: 80px 0 100px; }
.tpl-features .cta::before { display: none; }

/* ---------- Prose (about, privacy, thanks, 404) ---------- */
.prose { padding-top: 24px; font-size: 16px; }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-top: 2.2rem; }
.prose h3 { font-size: 1.25rem; margin-top: 1.6rem; }
.prose ul { padding-left: 1.3rem; margin: 0 0 1.2em; }
.prose li { margin-bottom: .3em; }
.prose__cta { margin-top: 2.5rem; text-align: center; }

/* ---------- Contact: copy + contact details beside a light form card ---------- */
.contact { padding-top: 48px; }
.contact__grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, 470px); gap: 0 56px; align-items: start;
  grid-template-areas: "intro form" "aside form";
}
.contact__intro { grid-area: intro; }
.contact__form { grid-area: form; align-self: stretch; }
.contact__aside { grid-area: aside; }
.contact .section__title { font-size: clamp(1.8rem, 3.4vw, 2.5rem); margin-bottom: .4rem; }
.contact__copy { font-size: 17px; line-height: 1.6; max-width: 34rem; color: rgba(255,255,255,.85); }
.contact__copy h3 { font-size: 1.25rem; margin: 1.3rem 0 .4rem; }
.contact__copy p { margin: 0 0 .6rem; }
.contact-info { margin: 1.8rem 0 0; padding: 20px 22px; border: 1px solid rgba(255,255,255,.12); border-radius: 12px; background: var(--c-surface); }
.contact-info h3 { font-size: 1.1rem; margin: 0 0 .8rem; }
.contact-info ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.contact-info li { display: flex; align-items: center; gap: 12px; font-size: 15px; flex-wrap: wrap; }
.contact-info svg { flex: none; color: var(--c-accent); }
.contact-info__label { width: 3.6em; color: var(--c-text-muted); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.contact-info a { color: #fff; text-decoration: none; border-bottom: 1px solid rgba(46,163,242,.5); overflow-wrap: anywhere; }
.contact-info a:hover { color: var(--c-accent); }

.contact-form {
  --cf-ink: #1b1f24; --cf-muted: #5b6470; --cf-line: #cfd5dd; --cf-error: #b3261e;
  position: sticky; top: calc(var(--header-h) + 16px);
  background: #fff; color: var(--cf-ink); border-radius: 16px; padding: 24px 24px 26px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06); margin-bottom: 40px;
}
.contact-form__brand { display: flex; align-items: center; gap: 14px; margin: 0 0 16px; padding-bottom: 14px; border-bottom: 1px solid #e6e9ee; }
.contact-form__brand img { width: 150px; height: auto; flex: none; }
.contact-form__brand p { margin: 0; font-size: 13.5px; line-height: 1.35; color: var(--cf-muted); }
.contact-form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 12px; }
.contact-form__grid .field { grid-column: 1 / -1; margin: 0; }
.contact-form__grid .field--half { grid-column: span 1; }
.contact-form .field > label { display: block; font-size: 13px; font-weight: 600; margin: 0 0 5px; color: var(--cf-ink); }
.contact-form input[type="text"], .contact-form input[type="email"], .contact-form input[type="tel"], .contact-form select, .contact-form textarea {
  width: 100%; min-height: 44px; background: #f7f8fa; color: var(--cf-ink); border: 1px solid var(--cf-line); border-radius: 8px;
  font: 400 15px/1.4 var(--f-body); padding: 10px 12px; transition: border-color .15s, box-shadow .15s, background .15s;
}
.contact-form select {
  appearance: none; -webkit-appearance: none; padding-right: 38px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='20' height='20'%3E%3Cpath fill='%235b6470' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
}
.contact-form select:invalid { color: var(--cf-muted); }
.contact-form option { color: var(--cf-ink); }
.contact-form textarea { resize: vertical; min-height: 84px; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; background: #fff; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(12,113,195,.18); }
.contact-form .field--error input, .contact-form .field--error select, .contact-form .field--error textarea { border-color: var(--cf-error); }
.contact-form .field__error { color: var(--cf-error); font-size: 13px; margin: 4px 0 0; }
.contact-form__submit {
  display: block; width: 100%; min-height: 50px; margin-top: 18px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--c-primary); color: #fff; font: 600 16px/1 var(--f-body); letter-spacing: .02em;
  box-shadow: 0 6px 16px rgba(12,113,195,.35); transition: background .15s, transform .05s;
}
.contact-form__submit:hover { background: #0a63ab; }
.contact-form__submit:active { transform: translateY(1px); }
.contact-form__submit:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; }
.contact-form__submit[disabled] { opacity: .7; cursor: progress; }
.form-notice { padding: 10px 14px; margin: 0 0 14px; border-left: 4px solid; font-size: 14px; border-radius: 4px; }
.form-notice--error { border-color: var(--c-error); background: rgba(255,107,107,.1); }
.contact-form .form-notice--error { border-color: var(--cf-error); background: #fdecea; color: #5f1410; }

@media (max-width: 900px) {
  .contact { padding-top: 28px; }
  .contact__grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "intro" "form" "aside"; max-width: 560px; }
  .contact-form { position: static; }
}
@media (max-width: 480px) {
  .contact-form { padding: 18px 16px 20px; border-radius: 14px; }
  .contact-form__brand { margin-bottom: 12px; padding-bottom: 12px; }
  .contact-form__brand img { width: 120px; }
  .contact-form__grid { gap: 10px; }
  .contact-form__grid .field--half:nth-of-type(n+3) { grid-column: 1 / -1; }
  .contact-form textarea { min-height: 72px; }
}
.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-footer); color: var(--c-text-muted); font-size: 13.5px; padding: 22px 0; }
.site-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .5rem 2rem; }
.site-footer p { margin: 0; }
.site-footer__links { list-style: none; display: flex; gap: 1.5rem; margin: 0; padding: 0; }
.site-footer a { color: var(--c-text-muted); text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }

/* ---------- Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .hero__video { display: none; }
}