/* ============================================================
   EcoMetrik Systems — design system
   ============================================================ */

:root {
  /* Brand — anchored to logo red RAL 3020 (#CC0605) */
  --color-primary: #cc0605;
  --color-primary-600: #a00400;
  --color-primary-50: #fce7e7;
  --color-secondary: #1e293b;       /* deep slate as supporting brand color */
  --color-accent: #f59e0b;          /* warm amber for tech / agriculture highlights */
  --color-accent-50: #fef3c7;
  --color-mint: #fcd34d;             /* used in dark sections (replaces old teal mint) */

  /* Neutrals */
  --color-dark: #0f172a;
  --color-slate-700: #334155;
  --color-slate-500: #64748b;
  --color-slate-300: #cbd5e1;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-surface: #fafafa;
  --color-white: #ffffff;

  /* Solids (flat design — no gradients) */
  --color-hero: #0f172a;
  --color-cta: var(--color-primary);
  --color-soft: var(--color-surface);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Manrope', var(--font-sans);

  /* Sizing */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(204, 6, 5, 0.22);

  /* Layout */
  --container: 1180px;
  --section-pad-y: clamp(64px, 9vw, 128px);
  --transition: 0.25s ease;
}

/* ============================================================
   Base
   ============================================================ */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-dark);
  background: var(--color-white);
  font-size: 16px;
  line-height: 1.65;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-dark);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; font-weight: 600; }

p { color: var(--color-slate-700); }
.lead { font-size: 1.125rem; color: var(--color-slate-700); max-width: 60ch; }

a { transition: color var(--transition); }
a:hover { color: var(--color-primary); }

::selection { background: var(--color-primary); color: white; }

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

.section {
  padding: var(--section-pad-y) 0;
}
.section--tight { padding: clamp(48px, 7vw, 80px) 0; }
.section--surface { background: var(--color-surface); }
.section--dark { background: var(--color-dark); color: var(--color-slate-200); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: white; }
.section--dark p { color: var(--color-slate-300); }

.section-head {
  max-width: 720px;
  margin: 0 auto clamp(40px, 5vw, 64px);
  text-align: center;
}
.section-head--left { margin-left: 0; text-align: left; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  background: var(--color-primary-50);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.section--dark .eyebrow {
  color: #fcd34d;
  background: rgba(252, 211, 77, 0.14);
}

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-cta);
  color: white;
  box-shadow: var(--shadow-lg);
}
.btn--primary { background: var(--color-primary); box-shadow: none; }
.btn--primary:hover { background: var(--color-primary-600); color: white; transform: translateY(-2px); }
.btn--ghost {
  background: transparent;
  color: var(--color-dark);
  border-color: var(--color-slate-300);
}
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--light {
  background: white;
  color: var(--color-dark);
}
.btn--light:hover { background: var(--color-primary-50); color: var(--color-primary); }
.btn .arrow { transition: transform var(--transition); }
.btn:hover .arrow { transform: translateX(3px); }

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-dark);
}
.nav__brand:hover { color: var(--color-primary); }
.nav__brand-img {
  height: 30px;
  width: auto;
  display: block;
}
.site-footer .nav__brand { color: white; }
.site-footer .nav__brand-img { height: 28px; }

.nav__menu {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav__menu a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-slate-700);
}
.nav__menu a:hover, .nav__menu a.is-active { background: var(--color-primary-50); color: var(--color-primary); }

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

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
}
.nav__toggle:hover { background: var(--color-slate-100); }
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  position: relative;
  transition: var(--transition);
}
.nav__toggle span::before, .nav__toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  transition: var(--transition);
}
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after { top: 7px; }
.nav.is-open .nav__toggle span { background: transparent; }
.nav.is-open .nav__toggle span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .nav__toggle span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 1024px) {
  .nav__menu, .nav__cta .btn { display: none; }
  .nav__toggle { display: inline-flex; }
  .nav.is-open {
    position: static;
  }
  .nav.is-open .nav__menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: absolute;
    top: 72px;
    left: 0; right: 0;
    background: white;
    padding: 16px 24px 8px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-slate-200);
  }
  .nav.is-open .nav__menu a { padding: 12px 16px; }
  .nav.is-open .nav__cta {
    display: block;
    position: absolute;
    top: calc(72px + 16px + 5 * 49px + 12px);
    left: 0; right: 0;
    background: white;
    padding: 0 24px 20px;
    box-shadow: 0 14px 24px rgba(15, 23, 42, 0.08);
    border-bottom: 1px solid var(--color-slate-200);
  }
  .nav.is-open .nav__cta .btn { display: inline-flex; width: 100%; justify-content: center; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  background: var(--color-hero);
  color: white;
  overflow: hidden;
  padding: clamp(80px, 12vw, 140px) 0 clamp(80px, 10vw, 120px);
}
.hero::before { content: none; }
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 60px;
  align-items: center;
}
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
}
.hero h1 { color: white; }
.hero p { color: rgba(255, 255, 255, 0.85); font-size: 1.125rem; max-width: 56ch; }
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero__eyebrow .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #fcd34d;
  box-shadow: 0 0 0 4px rgba(252, 211, 77, 0.30);
}
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.hero__visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero__visual img { width: 100%; height: 100%; object-fit: cover; }
.hero__badge {
  position: absolute;
  bottom: 20px; left: 20px; right: 20px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  color: white;
  font-size: 0.9rem;
  display: flex;
  gap: 12px;
  align-items: center;
}
.hero__badge strong { color: #fcd34d; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero__stats .stat-num { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: white; }
.hero__stats .stat-label { font-size: 0.85rem; color: rgba(255, 255, 255, 0.7); }

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-slate-200);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-50);
}
.card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-50);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.card__icon svg { width: 26px; height: 26px; }
.card--accent .card__icon { background: var(--color-accent-50); color: var(--color-accent); }
.card h3 { font-size: 1.2rem; }
.card p { font-size: 0.95rem; color: var(--color-slate-700); }
.card__link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}
.card__link:hover .arrow { transform: translateX(4px); }
.card__link .arrow { transition: transform var(--transition); }

/* Product card (catalog model) */
.product-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-200);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-50);
}
.product-card__media {
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  color: var(--color-slate-300);
}
.product-card__media img { width: 100%; height: 100%; object-fit: cover; }
.product-card__media svg { width: 64px; height: 64px; opacity: 0.45; }
.product-card__badge {
  position: absolute;
  top: 14px; left: 14px;
  background: white;
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: var(--shadow-sm);
}
.product-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}
.product-card__body h3 { font-size: 1.2rem; margin: 0; }
.product-card__purpose {
  font-size: 0.92rem;
  color: var(--color-slate-700);
  margin: 0;
}
.product-card__purpose strong { color: var(--color-dark); }
.product-card__specs {
  list-style: none;
  padding: 14px 0 0;
  margin: 0;
  display: grid;
  gap: 8px;
  font-size: 0.88rem;
  border-top: 1px solid var(--color-slate-200);
}
.product-card__specs li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.product-card__specs span { color: var(--color-slate-500); }
.product-card__specs strong { color: var(--color-dark); font-weight: 600; text-align: right; }
.product-card__actions {
  margin-top: auto;
  padding-top: 4px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.product-card__actions .btn {
  font-size: 0.85rem;
  padding: 10px 16px;
}

/* Category nav chips */
.chip-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.chip-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: white;
  border: 1.5px solid var(--color-slate-200);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-slate-700);
  transition: all var(--transition);
}
.chip-nav a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-50);
}

/* Wide feature card with image */
.feature-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-slate-200);
}
.feature-card__body { padding: clamp(28px, 4vw, 48px); display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.feature-card__img { background-position: center; background-size: cover; min-height: 320px; }
@media (max-width: 768px) {
  .feature-card { grid-template-columns: 1fr; }
}

/* List with checkmarks */
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.98rem;
  color: var(--color-slate-700);
}
.check-list li::before {
  content: '';
  flex-shrink: 0;
  width: 22px; height: 22px;
  margin-top: 4px;
  background: var(--color-primary-50);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23cc0605' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}
.section--dark .check-list li { color: var(--color-slate-300); }
.section--dark .check-list li::before {
  background-color: rgba(252, 211, 77, 0.18);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fcd34d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* ============================================================
   Stats / metrics row
   ============================================================ */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  text-align: center;
}
.stat-row .stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-primary);
}
.stat-row .stat-label {
  font-size: 0.95rem;
  color: var(--color-slate-500);
  margin-top: 4px;
}

/* ============================================================
   CTA banner
   ============================================================ */
.cta-banner {
  background: var(--color-cta);
  color: white;
  border-radius: var(--radius-xl);
  padding: clamp(40px, 6vw, 72px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before { content: none; }
.cta-banner > * { position: relative; }
.cta-banner h2 { color: white; max-width: 18ch; margin: 0 auto; }
.cta-banner p { color: rgba(255, 255, 255, 0.9); max-width: 50ch; margin: 16px auto 32px; }
.cta-banner__buttons { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* ============================================================
   Page header (interior pages)
   ============================================================ */
.page-header {
  background: var(--color-soft);
  padding: clamp(60px, 8vw, 100px) 0 clamp(40px, 6vw, 64px);
  text-align: center;
}
.page-header h1 { max-width: 22ch; margin: 0 auto; }
.page-header p { max-width: 56ch; margin: 18px auto 0; font-size: 1.1rem; }

/* ============================================================
   Solutions / market grid
   ============================================================ */
.market-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  background: var(--color-dark);
  color: white;
  display: flex;
  align-items: flex-end;
  padding: 28px;
  isolation: isolate;
  transition: transform var(--transition);
}
.market-card:hover { transform: translateY(-4px); color: white; }
.market-card__img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
  transition: transform 0.6s ease;
}
.market-card:hover .market-card__img { transform: scale(1.05); }
.market-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.62);
  z-index: -1;
}
.market-card__body { color: white; }
.market-card__body h3 { color: white; margin-bottom: 6px; }
.market-card__body p { color: rgba(255, 255, 255, 0.85); font-size: 0.95rem; }
.market-card--featured {
  grid-column: span 2;
  min-height: 420px;
}
@media (max-width: 768px) {
  .market-card--featured { grid-column: span 1; min-height: 320px; }
}

/* ============================================================
   LoRaWAN architecture diagram
   ============================================================ */
.lorawan-arch {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 56px);
  border: 1px solid var(--color-slate-200);
}
.lorawan-arch img { width: 100%; height: auto; }

/* ============================================================
   Two-column layout (technology page)
   ============================================================ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.two-col--reverse > :first-child { order: 2; }
@media (max-width: 768px) {
  .two-col, .two-col--reverse { grid-template-columns: 1fr; }
  .two-col--reverse > :first-child { order: 0; }
}

/* ============================================================
   Form
   ============================================================ */
.form-grid {
  display: grid;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}
.field label {
  display: block;
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-dark);
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  background: white;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-size: 1rem;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-50);
}
.field textarea { min-height: 140px; resize: vertical; font-family: inherit; }

/* Contact info */
.contact-info {
  display: grid;
  gap: 24px;
}
.contact-info__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-info__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
}
.contact-info__icon svg { width: 22px; height: 22px; }
.contact-info__item h4 { margin-bottom: 4px; }
.contact-info__item p { font-size: 0.95rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-dark);
  color: var(--color-slate-300);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand { max-width: 320px; }
.footer-brand p { color: var(--color-slate-300); margin-top: 16px; font-size: 0.95rem; }
.footer h4 { color: white; font-size: 0.95rem; margin-bottom: 18px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer ul a { color: var(--color-slate-300); font-size: 0.95rem; }
.footer ul a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-slate-500);
}

/* ============================================================
   Reveal animations
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Utility
   ============================================================ */
.text-center { text-align: center; }
.mt-0 { margin-top: 0 !important; }
.mt-md { margin-top: 24px; }
.mt-lg { margin-top: 40px; }