/* ==========================================================================
   ECHKK.ME — site.css (redesign/homepage-v1)
   Design system: ECHKK Navy primary / warm white background / charcoal text
   No frameworks, no web fonts. Light theme only.
   ========================================================================== */

/* --- Design tokens ------------------------------------------------------- */
:root {
  --navy: #17324F;
  --navy-dark: #10263C;
  --navy-soft: #23486E;
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --surface-alt: #F1F2EF;
  --text: #1F2937;
  --text-soft: #5B6472;
  --line: #E4E6E1;
  --whatsapp: #14853F;   /* AA: white text = 4.7:1 */
  --whatsapp-dark: #0F6B32;
  --focus: #2E6DB4;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 2px rgba(23, 50, 79, 0.06), 0 6px 18px rgba(23, 50, 79, 0.06);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --section-y: 88px;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

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

h1, h2, h3 {
  margin: 0 0 var(--space-3);
  font-weight: 600;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1.05; }  /* 56px cap */
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); line-height: 1.15; }  /* 36px cap */
h3 { font-size: 1.15rem; line-height: 1.3; }

p { margin: 0 0 var(--space-4); text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; }

a { color: var(--navy); }
a:hover { color: var(--navy-soft); }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section { padding-block: var(--section-y); }
.section-alt { background: var(--surface-alt); }

.section-sub {
  max-width: 560px;
  color: var(--text-soft);
  margin-block-end: var(--space-7);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px; left: var(--space-4);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius-sm);
  transition: top 0.15s ease;
}
.skip-link:focus { top: var(--space-2); color: #fff; }

/* White focus ring on dark surfaces: --focus blue is only ~2.3:1 against navy */
.cta a:focus-visible,
.cta .btn:focus-visible,
.site-footer a:focus-visible,
.site-footer .btn:focus-visible {
  outline-color: #fff;
}

/* --- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0.72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease,
              color 0.15s ease, transform 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); color: #fff; }

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

.btn-outline-light { border-color: rgba(255, 255, 255, 0.7); color: #fff; }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

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

.btn-lg { min-height: 52px; padding: 0.9rem 1.7rem; font-size: 1.05rem; }

/* --- Header -------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 248, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--navy);
}
.brand-name { font-size: 1.3rem; font-weight: 800; letter-spacing: 0.02em; }
.brand-tld { color: var(--text-soft); font-weight: 600; }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
}
.nav-list a {
  padding: var(--space-2) var(--space-1);
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid transparent;
}
.nav-list a:hover { color: var(--navy); border-bottom-color: var(--navy); }

.nav-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle .bar {
  display: block;
  width: 100%; height: 2px;
  background: var(--navy);
  border-radius: 1px;
}

/* --- Hero ---------------------------------------------------------------- */
.hero { padding-block: var(--section-y) var(--space-8); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-block-end: var(--space-4);
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-copy .lede {
  font-size: 1.12rem;
  color: var(--text-soft);
  max-width: 34em;
  margin-block-end: var(--space-6);
}

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

/* Product mosaic — no stretched hero image, real catalog photos in 1:1 cells */
.hero-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.mosaic-cell {
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.mosaic-cell img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: var(--space-3);
  transition: transform 0.2s ease;
}
.mosaic-cell:hover img { transform: scale(1.03); }

/* --- Trust strip ---------------------------------------------------------- */
.trust {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  padding-block: var(--space-6);
}

.trust-item strong {
  display: block;
  color: var(--navy);
  font-size: 1.02rem;
  margin-block-end: 2px;
}
.trust-item span { color: var(--text-soft); font-size: 0.92rem; }

/* --- Collections catalog ------------------------------------------------------ */
html { scroll-behavior: smooth; }

#catalog { scroll-margin-top: 84px; }  /* clear the sticky header on anchor jump */

.cat-jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-block-end: var(--space-7);
}
.cat-jump a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;  /* WCAG 2.2 target size */
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.93rem;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.cat-jump a:hover {
  background: var(--navy);
  color: #fff;
}

.group-title {
  scroll-margin-top: 88px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.3rem;
  color: var(--navy);
  margin-block: var(--space-7) var(--space-5);
}
.group-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.prod-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding-bottom: var(--space-4);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.prod-card:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
  color: var(--text);
}

.prod-media {
  aspect-ratio: 1 / 1;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
}
.prod-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--space-3);
  transition: transform 0.2s ease;
}
.prod-card:hover .prod-media img { transform: scale(1.03); }

.prod-title {
  margin: var(--space-4) var(--space-4) 2px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--navy);
}

.prod-price {
  margin: 0 var(--space-4);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

/* --- Why ECHKK ------------------------------------------------------------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.why-item h3 { color: var(--navy); }
.why-item p { color: var(--text-soft); font-size: 0.96rem; margin: 0; }

/* --- How it works ----------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  list-style: none;
}
.steps--six { grid-template-columns: repeat(3, 1fr); }
.steps li { position: relative; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  margin-block-end: var(--space-4);
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.1rem;
}
.steps h3 { margin-block-end: var(--space-2); }
.steps p { color: var(--text-soft); font-size: 0.96rem; margin: 0; }

/* --- CTA ---------------------------------------------------------------------- */
.cta {
  background: var(--navy);
  color: #fff;
  padding-block: var(--section-y);
}
.cta h2 { color: #fff; }
.cta-inner { text-align: center; }
.cta-inner > p {
  max-width: 34em;
  margin-inline: auto;
  margin-block-end: var(--space-6);
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

/* --- Footer --------------------------------------------------------------------- */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.82);
  padding-block: var(--space-8) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.3fr 1.1fr;
  gap: var(--space-6);
}

.footer-brand .brand { color: #fff; margin-block-end: var(--space-3); }
.footer-brand .brand-tld { color: rgba(255, 255, 255, 0.6); }
.footer-brand p { margin: 0; color: rgba(255, 255, 255, 0.65); font-size: 0.95rem; }

.footer-col h3 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-block-end: var(--space-3);
}
.footer-col ul { list-style: none; }
.footer-col li { margin-block-end: var(--space-2); font-size: 0.95rem; }
.footer-col a { color: rgba(255, 255, 255, 0.85); text-decoration: none; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-col p { margin: 0 0 var(--space-4); font-size: 0.95rem; }

.footer-bottom {
  margin-block-start: var(--space-7);
  padding-block: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-bottom p { margin: 0; font-size: 0.88rem; color: rgba(255, 255, 255, 0.55); }

/* --- Contact page ------------------------------------------------------------ */
#contact, #about, #shipping, #payment { scroll-margin-top: 84px; }

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

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
}

.contact-label {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.contact-value {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
}

/* Secondary contact channel (Skype) — deliberately lower weight than the main cards */
.contact-cards--2 { grid-template-columns: repeat(2, 1fr); }
.contact-also {
  margin-block: var(--space-5) 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}
.contact-also a { font-weight: 600; }

.info-block { max-width: 760px; }
.info-block h2 { color: var(--navy); }
.info-note {
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--navy);
  font-weight: 600;
}
.section-alt .info-note { background: var(--bg); }

/* --- 404 ------------------------------------------------------------------------ */
.nf-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.nf {
  text-align: center;
  padding: var(--space-6);
}
.nf-code {
  margin: 0 0 var(--space-2);
  font-size: clamp(5rem, 18vw, 9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--navy);
}
.nf h1 { font-size: 1.4rem; color: var(--text); }
.nf-sub {
  max-width: 32em;
  margin: var(--space-3) auto var(--space-6);
  color: var(--text-soft);
}
.nf-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

/* --- Responsive -------------------------------------------------------------------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .hero { padding-block: var(--space-8); }
  .hero-mosaic { max-width: 480px; }

  .prod-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
  .contact-cards { grid-template-columns: 1fr; max-width: 480px; }
  .why-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .steps--six { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
}

@media (max-width: 640px) {
  .section { padding-block: var(--space-8); }
  .section-sub { margin-block-end: var(--space-5); }

  /* Mobile navigation */
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(23, 50, 79, 0.08);
  }
  .site-nav.open { display: flex; }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list a {
    display: block;
    padding: var(--space-4) var(--space-5);
    border-bottom: none;
    border-top: 1px solid var(--line);
  }
  .nav-cta {
    margin: var(--space-4) var(--space-5) var(--space-5);
    justify-content: center;
  }

  .prod-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }
  .prod-title { margin-top: var(--space-3); font-size: 0.95rem; }
  .prod-price { font-size: 0.88rem; }
  .prod-media img { padding: var(--space-2); }
  .group-title { font-size: 1.15rem; margin-block: var(--space-6) var(--space-4); scroll-margin-top: 72px; }

  .why-grid, .steps { grid-template-columns: 1fr; gap: var(--space-5); }
  .steps--six { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions .btn { flex: 1 1 100%; }
  .cta-actions .btn { flex: 1 1 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}

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