/* ============================================
   PACK & SEALS LTD — DESIGN SYSTEM
   Signature: "Specification Plate" motif — trust
   stats and credentials presented like engraved
   steel equipment nameplates. Ties visual language
   directly to food-grade stainless steel equipment.
   ============================================ */

:root {
  /* Color tokens — Pack & Seals brand: orange, black, white */
  --charcoal-navy: #0D0D0D;   /* brand black (primary dark) */
  --steel-grey: #3A3A3A;      /* secondary dark / borders */
  --plate-silver: #D8D5D0;    /* nameplate metallic, warm-neutral on black */
  --warm-white: #FAFAF8;      /* light background */
  --brass: #E8622C;           /* brand orange (primary accent) */
  --brass-dark: #C24E1F;
  --forest: #1F5B44;          /* WhatsApp CTA green — functional, not brand color */
  --ink: #101010;             /* body text on light */
  --ink-soft: #4A4A4A;

  /* Type */
  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --radius: 2px; /* industrial: sharp, not rounded */
  --max-width: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--warm-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--space-2) 0;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 var(--space-2) 0; color: var(--ink-soft); }

a { color: var(--brass); text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--brass);
  outline-offset: 2px;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.section { padding: var(--space-6) 0; }
.section--dark { background: var(--charcoal-navy); color: var(--warm-white); }
.section--dark p { color: var(--plate-silver); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--warm-white); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--charcoal-navy);
  border-bottom: 1px solid var(--steel-grey);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--warm-white);
  letter-spacing: 0.02em;
}
.logo span { color: var(--brass); }

.nav-links {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--plate-silver);
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--brass); }

.nav-cta {
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--steel-grey);
  color: var(--warm-white);
  padding: 0.4rem 0.6rem;
  font-size: 1.1rem;
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-block; }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--charcoal-navy);
    padding: var(--space-3);
    border-bottom: 1px solid var(--steel-grey);
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
  text-align: center;
}
.btn:hover { transform: translateY(-1px); }

.btn--primary { background: var(--brass); color: var(--charcoal-navy); }
.btn--primary:hover { background: #d49a3f; }

.btn--outline {
  background: transparent;
  border-color: var(--plate-silver);
  color: var(--warm-white);
}
.btn--outline:hover { border-color: var(--brass); color: var(--brass); }

.btn--whatsapp {
  background: #1F5B44;
  color: #fff;
}
.btn--whatsapp:hover { background: #24704f; }

.btn--sm { padding: 0.5rem 1rem; font-size: 0.8rem; }
.btn--block { display: block; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--charcoal-navy) 0%, #0E1620 100%);
  color: var(--warm-white);
  padding: var(--space-6) 0;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-5);
  align-items: center;
}
@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: var(--space-2);
  display: block;
}
.hero p.lede {
  color: var(--plate-silver);
  font-size: 1.1rem;
  max-width: 42ch;
}
.hero__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-3); }
.hero__media {
  aspect-ratio: 4/3;
  background: #1c2b38;
  border: 1px solid var(--steel-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
  padding: var(--space-3);
}

/* ---------- Specification Plate (signature trust element) ---------- */
.plate-bar {
  background: #0E1620;
  border-top: 1px solid var(--steel-grey);
  border-bottom: 1px solid var(--steel-grey);
  padding: var(--space-3) 0;
}
.plate-bar__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3);
  text-align: center;
}
.plate-stat__value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--brass);
  display: block;
}
.plate-stat__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--plate-silver);
}

/* Inline "plate" trust badge used directly before CTAs */
.trust-plate {
  border: 1px solid var(--steel-grey);
  background: rgba(192,138,52,0.06);
  border-left: 3px solid var(--brass);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: var(--space-3);
}

/* ---------- Cards / Grids ---------- */
.grid {
  display: grid;
  gap: var(--space-3);
}
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) {
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
}
.card {
  background: #fff;
  border: 1px solid #E4E0D8;
  padding: var(--space-3);
}
.card--dark {
  background: #1A2733;
  border: 1px solid var(--steel-grey);
}
.card--dark h3 { color: var(--warm-white); }
.card--dark p { color: var(--plate-silver); }

.icon-num {
  font-family: var(--font-mono);
  color: var(--brass);
  font-size: 0.85rem;
  display: block;
  margin-bottom: var(--space-1);
}

/* Before/after gallery */
.ba-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border: 1px solid var(--steel-grey);
}
.ba-pair > div {
  aspect-ratio: 4/3;
  background: #1c2b38;
  color: var(--plate-silver);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2);
}

/* ---------- Testimonial ---------- */
.testimonial {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.testimonial__photo {
  width: 64px; height: 64px;
  background: var(--steel-grey);
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--plate-silver);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.testimonial__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-top: var(--space-1);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--charcoal-navy);
  color: var(--plate-silver);
  padding: var(--space-5) 0 var(--space-3);
  font-size: 0.9rem;
}
.site-footer h4 { color: var(--warm-white); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; }
.site-footer a { color: var(--plate-silver); }
.site-footer a:hover { color: var(--brass); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3);
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-bottom {
  border-top: 1px solid var(--steel-grey);
  margin-top: var(--space-4);
  padding-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
}
.trust-badge-row { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-2); }
.trust-badge {
  border: 1px solid var(--steel-grey);
  padding: 0.4rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: var(--plate-silver);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  padding: var(--space-2) 0 0;
}
.breadcrumb a { color: var(--ink-soft); }

/* ---------- WhatsApp CTA with photo ---------- */
.whatsapp-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--forest);
  color: #fff;
  padding: 0.6rem 1.25rem 0.6rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.whatsapp-cta:hover { background: #24704f; transform: translateY(-1px); }
.whatsapp-cta__avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid #fff;
}
.whatsapp-cta__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.whatsapp-cta__text { display: flex; flex-direction: column; line-height: 1.2; text-align: left; }
.whatsapp-cta__text small { font-weight: 400; opacity: 0.85; font-size: 0.72rem; }

.sticky-ctas__whatsapp {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  background: var(--forest);
  color: #fff;
  padding: 0.6rem;
  flex: 1;
  font-weight: 600;
  font-size: 0.85rem;
}
.sticky-ctas__whatsapp img {
  width: 28px; height: 28px; border-radius: 50%; object-fit: cover; border: 1px solid #fff;
}

/* ---------- Premium WhatsApp CTA Section ---------- */
.wa-section {
  background: var(--charcoal-navy);
  color: var(--warm-white);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--steel-grey);
  border-bottom: 1px solid var(--steel-grey);
}
.wa-section__grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-4);
  align-items: center;
}
@media (max-width: 860px) {
  .wa-section__grid { grid-template-columns: 1fr; text-align: center; }
  .wa-section__photo { margin: 0 auto; }
}
.wa-section__photo {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--brass);
}
.wa-section__photo img { width: 100%; height: 100%; object-fit: cover; }
.wa-section__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--plate-silver);
  margin-top: var(--space-2);
  letter-spacing: 0.03em;
}

/* ---------- Sticky mobile CTAs ---------- */
.sticky-ctas {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  gap: 1px;
  background: var(--steel-grey);
}
.sticky-ctas a {
  flex: 1;
  text-align: center;
  padding: 0.9rem;
  font-weight: 600;
  font-size: 0.85rem;
}
.sticky-ctas .btn--whatsapp { background: #1F5B44; color: #fff; }
.sticky-ctas .btn--primary { background: var(--brass); color: var(--charcoal-navy); }

@media (min-width: 861px) {
  .sticky-ctas { display: none; } /* desktop uses header CTA instead */
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--brass);
  color: var(--charcoal-navy);
  padding: 0.5rem 1rem;
  z-index: 300;
}
.skip-link:focus { left: 0; top: 0; }