/* =========================================================
   NexChemical — base styles (tokens, reset, header, footer)
   ========================================================= */

:root {
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --color-ink: #0f0f0f;
  --color-ink-soft: #222222;
  --color-gray-700: #444444;
  --color-gray-600: #575757;
  --color-gray-500: #666666;
  --color-gray-450: #6b7280;
  --color-gray-400: #828282;
  --color-gray-300: #979797;
  --color-border: #e2e2de;
  --color-border-strong: #d4d4d4;

  --color-bg: #f6f6f3;
  --color-bg-alt: #eff0e0;
  --color-white: #ffffff;

  --color-dark: #0f1216;
  --color-footer-bg: #161b20;

  --color-accent: #005ca7;
  --color-accent-dark: #00436e;
  --color-accent-soft: #e8f1f9;

  --radius-pill: 999px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --container-width: 1280px;
  --shadow-card: 0 10px 30px rgba(15, 15, 15, 0.08);
  --shadow-nav: 0 12px 30px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink-soft);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  color: var(--color-ink-soft);
  font-weight: 500;
  margin: 0 0 0.5em;
  line-height: 1.15;
}

p {
  margin: 0 0 1em;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

@media (min-width: 1100px) {
  .container {
    padding: 0 64px;
  }
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

/* -------------------- Buttons -------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-ink);
}

.btn-white:hover {
  background: var(--color-bg-alt);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink-soft);
  border-color: var(--color-border-strong);
}

.btn-outline:hover {
  border-color: var(--color-ink-soft);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
}

.btn-arrow {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-white);
  flex-shrink: 0;
}

.btn-arrow svg {
  width: 16px;
  height: 16px;
}

/* -------------------- Messages -------------------- */

.messages {
  max-width: var(--container-width);
  margin: 16px auto 0;
  padding: 0 16px;
}

.messages li {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 14px;
  margin-bottom: 8px;
}

main {
  min-height: 40vh;
}

/* -------------------- CTA banner (reused above footer) -------------------- */

.cta-banner {
  position: relative;
  margin: 80px 16px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(120deg, #12181f 0%, #1c2733 55%, #26343f 100%);
  min-height: 320px;
  display: flex;
  align-items: center;
}

.cta-banner img.cta-banner__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.cta-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(246, 246, 243, 0.94) 0%, rgba(246, 246, 243, 0.55) 45%, rgba(15, 18, 22, 0.15) 100%);
}

.cta-banner__content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
  padding: 48px 32px;
}

.cta-banner__content h2 {
  font-size: 34px;
  max-width: 320px;
  margin: 0;
}

@media (min-width: 700px) {
  .cta-banner {
    margin: 100px 24px 0;
  }

  .cta-banner__content {
    padding: 56px 54px;
  }

  .cta-banner__content h2 {
    font-size: 44px;
  }
}

.cta-banner__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* -------------------- Footer -------------------- */

.site-footer {
  background: var(--color-bg-alt);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-top: -24px;
  padding-top: 60px;
}

.site-footer__inner {
  background: var(--color-footer-bg);
  border-radius: var(--radius-md);
  margin: 0 16px;
  padding: 40px 24px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

@media (min-width: 700px) {
  .site-footer__inner {
    margin: 0 24px;
    padding: 48px 40px 28px;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.footer-brand__logo {
  font-family: var(--font-heading);
  font-size: 26px;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand__logo span {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.footer-brand__tagline {
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--color-gray-300);
  text-transform: uppercase;
}

.footer-social {
  display: flex;
  gap: 14px;
}

.footer-social a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-social a svg {
  width: 18px;
  height: 18px;
}

.footer-divider {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
}

/* -------------------- Shared section utilities -------------------- */

.section {
  padding: 64px 0;
}

.section--tight {
  padding: 40px 0;
}

.section-heading {
  max-width: 640px;
  margin-bottom: 32px;
}

.section-heading .eyebrow {
  margin-bottom: 8px;
}

.grid-responsive {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 620px) {
  .grid-responsive--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid-responsive--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-responsive--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.badge--bio {
  background: #eef7ee;
  color: #2f7a3a;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  text-transform: none;
}

.img-placeholder {
  background: linear-gradient(135deg, #dfe6ea 0%, #c9d3d8 50%, #aebac2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6b7a82;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
}

/* ============================================================
   WHATSAPP WIDGET (fixed bottom-right, all pages)
   ============================================================ */

.whatsapp-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.whatsapp-widget__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 50%;
  background: #25D366;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform .15s ease;
}
.whatsapp-widget__toggle:hover { transform: scale(1.06); }

.whatsapp-widget__panel {
  display: none;
  flex-direction: column;
  width: 280px;
  background: #fff;
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.18);
  overflow: hidden;
}
.whatsapp-widget__panel.is-open { display: flex; }

.whatsapp-widget__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  background: #075E54;
  color: #fff;
  font-family: "Manrope", "Inter", sans-serif;
  font-size: 15px;
  font-weight: 700;
}

.whatsapp-widget__close {
  display: flex;
  border: 0;
  background: none;
  color: #fff;
  cursor: pointer;
  padding: 0;
}

.whatsapp-widget__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
  font-family: "Manrope", "Inter", sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: #0f0f0f;
  text-decoration: none;
  transition: background-color .15s ease;
}
.whatsapp-widget__link:hover { background: #f4f9f5; }

@media (max-width: 480px) {
  .whatsapp-widget { right: 16px; bottom: 16px; }
  .whatsapp-widget__panel { width: calc(100vw - 32px); }
}