/* =========================================================
   Topptré – Accoya timbur fyrir fagmenn
   Litaþema: Létt, náttúrulegt, sjálfbært
   Bakgrunnur: hlutlægt hvítt/beige
   Aðallitur: mýkt olíugrænt úr lógói
   Áherslulitur: hlýr jarðlitur / timbur
   ========================================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Bakgrunnar – millivegur: dökk beige/slate, ekki kolsvartur */
  --bg:          #e8e4dc;       /* dökkt beige – aðalbakgrunnur */
  --bg-warm:     #e0dbd1;       /* hlýrra dökkt beige */
  --bg-section:  #d8d3c8;       /* dæld section */
  --bg-card:     #f0ece4;       /* ljósari kort */
  --bg-dark:     #252820;       /* dökk section – lóg ólitur */

  /* Textar */
  --text:        #1e2118;       /* aðaltexti – dökkt með grænleika */
  --text-mid:    #3a3f33;       /* millitexti */
  --text-muted:  #5a6052;       /* daufur texti */
  --text-light:  #f0ece4;       /* texti á dökku */
  --text-dim:    #8a9080;       /* mjög daufur */

  /* Lóg ó-grænir */
  --green:       #4a7c00;       /* aðalgrænt úr lógói */
  --green-light: #5d9a00;       /* ljósara */
  --green-mid:   #3d6800;       /* dökk-grænna */
  --green-pale:  #dde8c4;       /* ljóst grænleiki */
  --green-tint:  #e8f0d4;       /* ljóst með grænleika */

  /* Jarðlitir / timbur */
  --wood:        #8b6914;       /* hlý timbur-brúnn */
  --wood-light:  #c4a35a;       /* ljósari timbur */
  --wood-pale:   #ede0c4;       /* ljós timbur */

  /* Línur og rammar */
  --border:      #ccc7bc;
  --border-mid:  #b8b2a6;
  --border-green:#a0c070;

  /* Skuggar */
  --shadow-sm:   0 1px 4px rgba(42,46,38,0.08);
  --shadow:      0 4px 16px rgba(42,46,38,0.10);
  --shadow-lg:   0 8px 32px rgba(42,46,38,0.12);

  --radius:      6px;
  --radius-lg:   12px;
  --transition:  0.22s ease;
  --font-main:   'Inter', 'Helvetica Neue', Arial, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1rem, 2vw, 1.25rem); }

p { color: var(--text-muted); line-height: 1.7; }

a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-light); }

/* --- Layout --- */
.container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-sm { padding: 3.5rem 0; }

/* --- Section Labels --- */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border-green);
  border-radius: 2px;
  background: var(--green-tint);
}

/* =========================================================
   NAVIGATION
   ========================================================= */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(247,245,240,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
#navbar.scrolled { box-shadow: 0 2px 12px rgba(42,46,38,0.10); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 1.5rem;
  max-width: 1140px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
}
.nav-logo .logo-icon {
  width: 30px; height: 30px;
  background: var(--green);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  flex-shrink: 0;
}
.nav-logo .logo-dot { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-mid);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.nav-links a:hover { color: var(--text); background: var(--bg-section); }
.nav-links .nav-cta {
  background: var(--green);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.nav-links .nav-cta:hover { background: var(--green-light); }

#hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border-mid);
  color: var(--text);
  padding: 0.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}
#hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  color: var(--text-mid);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--green); }

/* =========================================================
   HERO
   ========================================================= */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  background:
    radial-gradient(ellipse at 70% 40%, rgba(74,124,0,0.08) 0%, transparent 55%),
    linear-gradient(160deg, var(--green-pale) 0%, var(--bg) 45%);
  position: relative;
  overflow: hidden;
}

/* Subtle organic texture */
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(139,105,20,0.04) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(74,124,0,0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem 1.5rem;
  max-width: 1140px;
  margin: 0 auto;
  width: 100%;
}

.hero-content { max-width: 560px; }
.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 2rem;
  height: 2px;
  background: var(--green);
}

.hero-title {
  margin-bottom: 1.5rem;
  color: var(--text);
}
.hero-title .highlight {
  color: var(--green);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 480px;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--green);
  color: #fff;
}
.btn-primary:hover {
  background: var(--green-light);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(74,124,0,0.22);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border-mid);
}
.btn-outline:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-tint);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.stat-item { text-align: left; }
.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-img-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.hero-img-wrapper img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}
.hero-img-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background: rgba(247,245,240,0.95);
  border: 1px solid var(--border-green);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  backdrop-filter: blur(8px);
}
.hero-img-badge .badge-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.2rem;
}
.hero-img-badge .badge-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* =========================================================
   QUOTE BANNER
   ========================================================= */
#quote-banner {
  background: var(--bg-dark);
  padding: 3.5rem 0;
}
.quote-text {
  font-size: clamp(1.05rem, 2.5vw, 1.4rem);
  font-style: italic;
  color: rgba(247,245,240,0.75);
  text-align: center;
  max-width: 740px;
  margin: 0 auto;
  line-height: 1.65;
}
.quote-text::before { content: '"'; color: var(--green-light); font-size: 1.4em; line-height: 0; vertical-align: -0.3em; margin-right: 0.1em; }
.quote-text::after  { content: '"'; color: var(--green-light); font-size: 1.4em; line-height: 0; vertical-align: -0.3em; margin-left: 0.1em; }

/* =========================================================
   FEATURES / KOSTIR
   ========================================================= */
#kostir { background: var(--bg); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), var(--wood-light));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: var(--border-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  display: block;
}
.feature-card h3 {
  color: var(--text);
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.feature-card p { font-size: 0.9rem; }

/* =========================================================
   COMPARISON TABLE
   ========================================================= */
#samanburdur {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header { margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.6rem; }
.section-header p { font-size: 1rem; max-width: 540px; }

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--bg-card);
}
.comparison-table thead th {
  background: var(--bg-warm);
  padding: 0.9rem 1.4rem;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.comparison-table thead th:first-child { color: var(--text-mid); }
.comparison-table thead th.col-accoya {
  color: var(--green);
  background: var(--green-tint);
}

.comparison-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.comparison-table tbody tr:last-child { border-bottom: none; }
.comparison-table tbody tr:hover { background: var(--bg-warm); }
.comparison-table tbody tr:hover td.col-accoya {
  background: #a8cc70 !important;
  transition: background var(--transition);
}

.comparison-table td {
  padding: 0.9rem 1.4rem;
  color: var(--text-muted);
  vertical-align: middle;
}
.comparison-table td:first-child {
  font-weight: 600;
  color: var(--text);
  font-size: 0.88rem;
}
.comparison-table td.bad { color: #b84040; }
.comparison-table td.good {
  color: var(--green-mid);
  font-weight: 600;
}
.comparison-table td.col-accoya {
  background: var(--green-tint);
  transition: background var(--transition);
}

/* =========================================================
   NOTKUNARSVIÐ – TABS
   ========================================================= */
#notkun { background: var(--bg); }

.tabs-wrapper { margin-top: 2.5rem; }

.tab-nav {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  border-bottom: 1.5px solid var(--border);
  margin-bottom: 2rem;
}
.tab-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1.5px;
  transition: all var(--transition);
  font-family: var(--font-main);
}
.tab-btn:hover { color: var(--text-mid); }
.tab-btn.active {
  color: var(--green);
  border-bottom-color: var(--green);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.usage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.usage-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.usage-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-mid);
  font-size: 0.92rem;
  padding: 0.7rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.usage-list li:hover {
  border-color: var(--border-green);
  color: var(--text);
  background: var(--green-tint);
}
.usage-list li::before {
  content: '▸';
  color: var(--green);
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.usage-highlight {
  background: var(--green-pale);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.usage-highlight h4 {
  color: var(--green-mid);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
  font-weight: 700;
}
.usage-highlight ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.usage-highlight ul li {
  color: var(--text-mid);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.usage-highlight ul li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}

/* =========================================================
   VOTTANIR – ACCORDION
   ========================================================= */
#vottanir {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.cert-card:hover { border-color: var(--border-green); box-shadow: var(--shadow-sm); }

.cert-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
}
.cert-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.cert-badge {
  background: var(--green-tint);
  border: 1px solid var(--border-green);
  color: var(--green-mid);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
}
.cert-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}
.cert-toggle {
  color: var(--text-dim);
  font-size: 0.75rem;
  transition: transform var(--transition);
}
.cert-card.open .cert-toggle { transform: rotate(180deg); color: var(--green); }

.cert-body {
  display: none;
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--border);
}
.cert-body p {
  font-size: 0.88rem;
  padding-top: 1rem;
}
.cert-card.open .cert-body { display: block; }

/* =========================================================
   MYNDIR / GALLERY
   ========================================================= */
#myndir { background: var(--bg); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 3/4;
  cursor: pointer;
  transition: all var(--transition);
}
.gallery-item:first-child {
  grid-row: span 2;
  aspect-ratio: auto;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.gallery-item:hover img { transform: scale(1.03); }
.gallery-item:hover { border-color: var(--border-green); box-shadow: var(--shadow); }
.gallery-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(42,46,38,0.7));
  padding: 1.5rem 1rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(247,245,240,0.85);
}

/* =========================================================
   VERKFERLI – STEPS
   ========================================================= */
#verkferli {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 1.75rem;
  left: calc(12.5% + 1rem);
  right: calc(12.5% + 1rem);
  height: 1px;
  background: var(--border-green);
  opacity: 0.7;
}

.step-card {
  text-align: center;
  padding: 2rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
}
.step-card:hover {
  border-color: var(--border-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.step-number {
  width: 2.75rem; height: 2.75rem;
  background: var(--green);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  position: relative;
  z-index: 1;
}
.step-card h3 {
  color: var(--text);
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.7rem;
}
.step-card p { font-size: 0.875rem; }

/* =========================================================
   SAMBAND – CONTACT FORM
   ========================================================= */
#samband { background: var(--bg); }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  margin-top: 3rem;
  align-items: start;
}

.contact-info h3 {
  color: var(--text);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.contact-detail-icon {
  width: 2.4rem; height: 2.4rem;
  background: var(--green-tint);
  border: 1px solid var(--border-green);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-detail-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.2rem;
}
.contact-detail-value {
  font-size: 0.9rem;
  color: var(--text);
}
.contact-detail-value a { color: var(--text); }
.contact-detail-value a:hover { color: var(--green); }

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin-bottom: 1.1rem;
}
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group.full { grid-column: 1 / -1; }

.form-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mid);
}
.form-label .req { color: var(--green); margin-left: 0.2rem; }

.form-input, .form-select, .form-textarea {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 0.92rem;
  padding: 0.7rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-dim); }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(74,124,0,0.10);
  background: var(--bg-card);
}
.form-select { appearance: none; cursor: pointer; }
.form-textarea { resize: vertical; min-height: 120px; }

.form-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
  margin-bottom: 1.1rem;
}
.form-note span { color: var(--green); }

.form-submit {
  width: 100%;
  padding: 0.9rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-main);
  transition: all var(--transition);
}
.form-submit:hover {
  background: var(--green-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(74,124,0,0.22);
}

.form-success {
  display: none;
  text-align: center;
  padding: 2.5rem 2rem;
}
.form-success .success-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.form-success h4 { color: var(--green); margin-bottom: 0.5rem; }
.form-success p { font-size: 0.92rem; }

/* =========================================================
   FOOTER
   ========================================================= */
#footer {
  background: var(--bg-dark);
  padding: 3rem 0 1.5rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(247,245,240,0.1);
  margin-bottom: 1.5rem;
}

.footer-brand .nav-logo {
  margin-bottom: 1rem;
  color: var(--text-light);
}
.footer-brand .nav-logo .logo-dot { color: var(--green-light); }
.footer-brand p {
  font-size: 0.875rem;
  color: rgba(247,245,240,0.45);
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(247,245,240,0.35);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: rgba(247,245,240,0.5);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--text-light); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  color: rgba(247,245,240,0.3);
}

/* =========================================================
   SCROLL TO TOP
   ========================================================= */
#scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 2.6rem; height: 2.6rem;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 3px 12px rgba(74,124,0,0.3);
}
#scroll-top.visible { opacity: 1; pointer-events: auto; }
#scroll-top:hover { background: var(--green-light); transform: translateY(-2px); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { display: none; }
  .hero-content { max-width: 100%; }

  .nav-links { display: none; }
  #hamburger { display: flex; }

  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .gallery-item:first-child { grid-row: span 1; }

  .steps-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid::before { display: none; }

  .contact-layout { grid-template-columns: 1fr; gap: 2rem; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  .usage-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hero-stats { gap: 1.25rem; }
  .stat-value { font-size: 1.5rem; }

  .features-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .tab-btn { font-size: 0.72rem; padding: 0.55rem 0.8rem; }
}

/* =========================================================
   ANIMATIONS
   ========================================================= */
.animate-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.animate-in:nth-child(2) { transition-delay: 0.08s; }
.animate-in:nth-child(3) { transition-delay: 0.16s; }
.animate-in:nth-child(4) { transition-delay: 0.24s; }
.animate-in:nth-child(5) { transition-delay: 0.32s; }
.animate-in:nth-child(6) { transition-delay: 0.40s; }

/* =========================================================
   VÍDEÓ REVEAL SECTION
   ========================================================= */
.video-reveal-section {
  background: var(--bg-section);
}

/* Teaser layout */
.video-teaser {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  margin-bottom: 0;
}

.video-teaser-text h2 {
  margin-bottom: 0.75rem;
}

.video-teaser-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 1.75rem;
  line-height: 1.7;
}

/* Play button */
.btn-video-reveal {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.85rem 1.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 18px rgba(74,124,0,0.22);
}
.btn-video-reveal:hover {
  background: var(--green-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(74,124,0,0.32);
}
.btn-video-reveal[aria-expanded="true"] {
  background: var(--green-mid);
}
.btn-video-reveal[aria-expanded="true"] .btn-video-label {
  /* label text updated via JS */
}
.btn-video-icon {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.btn-video-duration {
  font-size: 0.78rem;
  font-weight: 400;
  opacity: 0.75;
  padding-left: 0.25rem;
  border-left: 1px solid rgba(255,255,255,0.35);
  margin-left: 0.25rem;
}

/* Meta items */
.video-teaser-meta {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  min-width: 260px;
  box-shadow: var(--shadow-sm);
}
.video-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.45;
}
.video-meta-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

/* Drawer – collapsed */
.video-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.4s ease,
              margin-top 0.4s ease;
  opacity: 0;
  margin-top: 0;
}

/* Drawer – open */
.video-drawer.open {
  max-height: 1100px;
  opacity: 1;
  margin-top: 2.5rem;
}

.video-drawer-inner {
  position: relative;
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.06);
}

.video-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #000;
}

/* Close button inside drawer */
.video-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(0,0,0,0.55);
  color: #f0ece4;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 0.4rem 0.85rem 0.4rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
  backdrop-filter: blur(4px);
  z-index: 10;
}
.video-close-btn:hover {
  background: rgba(0,0,0,0.8);
}

/* Responsive */
@media (max-width: 900px) {
  .video-teaser {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .video-teaser-meta {
    min-width: unset;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .video-meta-item {
    flex: 1 1 45%;
  }
}

@media (max-width: 600px) {
  .video-teaser-meta {
    flex-direction: column;
  }
  .video-meta-item {
    flex: unset;
  }
  .video-drawer.open {
    max-height: 400px;
  }
}

/* =========================================================
   VÍDEÓ SCIENCE PANEL
   ========================================================= */
.video-science-panel {
  background: var(--bg-card);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 2rem 2.5rem;
}

.video-science-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: flex-start;
  max-width: 860px;
  margin: 0 auto;
}

.video-science-icon {
  width: 2.8rem;
  height: 2.8rem;
  background: var(--green-tint);
  border: 1px solid var(--border-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.video-science-text h4 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-mid);
  margin-bottom: 0.85rem;
}

.video-science-text p {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.video-science-text p:last-child {
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .video-science-panel {
    padding: 1.5rem 1.25rem;
  }
  .video-science-inner {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .video-science-icon {
    display: none;
  }
}