/* ============================================================
   TelTools — Landing Page Styles
   Estrutura: Reset → Variáveis → Base → Layout → Componentes → Seções → Responsivo
   ============================================================ */

/* ---------- 1. Reset & Box Model ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ---------- 2. Custom Properties ---------- */
:root {
  /* Brand */
  --color-blue:       #0066CC;
  --color-blue-dark:  #004D99;
  --color-blue-light: #1A7FD9;
  --color-gold:       #FFD700;
  --color-gold-dark:  #E6C200;
  --color-emerald:    #00C896;
  --color-teal:       #00B4D8;
  --color-violet:     #7C3AED;

  /* Backgrounds */
  --bg-hero:    #0A1628;
  --bg-header:  #070F1F;
  --bg-dark:    #0D1F3C;
  --bg-darker:  #070F1F;
  --bg-light:   #F8FAFC;
  --bg-white:   #0B1F3A;

  /* Text */
  --text-primary:   #1A202C;
  --text-secondary: #4A5568;
  --text-muted:     #718096;
  --text-light:     #E2E8F0;
  --text-white:     #FFFFFF;

  /* Borders */
  --border-light: rgba(255,255,255,0.08);
  --border-card:  rgba(0,102,204,0.15);

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.15);
  --shadow-blue: 0 8px 30px rgba(0,102,204,0.25);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.25rem;
  --fs-2xl:  1.5rem;
  --fs-3xl:  1.875rem;
  --fs-4xl:  2.25rem;
  --fs-5xl:  3rem;
  --fs-6xl:  3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --header-h:      72px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Border radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-full: 9999px;
}

/* ---------- 3. Base ---------- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* ---------- 4. Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: var(--space-24);
}

.section--dark {
  background: var(--bg-dark);
  color: var(--text-white);
}

.section--light {
  background: var(--bg-light);
}

/* ---------- 5. Section Headers ---------- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.section--dark .section-eyebrow { color: var(--color-gold); }

.section-title {
  font-size: clamp(var(--fs-3xl), 4vw, var(--fs-5xl));
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 560px;
  margin-inline: auto;
}

.section--dark .section-desc { color: var(--text-light); opacity: 0.8; }

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 2rem;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-blue);
  color: var(--text-white);
  border-color: var(--color-blue);
}

.btn--primary:hover {
  background: var(--color-blue-dark);
  border-color: var(--color-blue-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

.btn--outline {
  background: transparent;
  color: var(--text-white);
  border-color: rgba(255,255,255,0.4);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-2px);
}

.btn--full { width: 100%; }

/* ---------- 7. HEADER ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: #070F1F;
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
  backdrop-filter: blur(12px);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* Logo */
.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo {
  height: 110px;
  width: auto;
  object-fit: contain;
}

/* Show only logo--dark in dark header; hide light logo */
.logo--light { display: none; }
.logo--dark  { display: block; }

/* Nav */
.nav { flex: 1; }

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  justify-content: center;
}

.nav__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
  color: #FFFFFF;
  background: rgba(255,255,255,0.08);
}

.nav__link--cta {
  margin-left: var(--space-2);
  background: var(--color-blue);
  color: var(--text-white) !important;
  padding: var(--space-2) var(--space-4);
}

.nav__link--cta:hover {
  background: var(--color-blue-dark) !important;
}

/* Language Selector */
.lang-selector {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  transition: all var(--transition-fast);
  line-height: 1;
}

.flag-svg {
  width: 20px;
  height: 14px;
  border-radius: 2px;
  display: block;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1);
}
.lang-btn .lang-code { letter-spacing: 0.05em; }

.lang-btn:hover {
  color: #FFFFFF;
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
}

.lang-btn.active {
  color: var(--color-gold);
  border-color: rgba(255,215,0,0.3);
  background: rgba(255,215,0,0.06);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.hamburger__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #070F1F;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
  transform-origin: center;
}

.hamburger.open .hamburger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .hamburger__bar:nth-child(2) { opacity: 0; }
.hamburger.open .hamburger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 8. HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-hero);
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,102,204,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,102,204,0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-block: var(--space-20);
  gap: var(--space-6);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0,102,204,0.15);
  border: 1px solid rgba(0,102,204,0.35);
  color: var(--color-gold);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}

.hero__title {
  font-size: clamp(var(--fs-4xl), 6vw, var(--fs-6xl));
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-white);
  max-width: 820px;
}

.hero__title span { color: var(--color-gold); }

.hero__subtitle {
  font-size: clamp(var(--fs-lg), 2.5vw, var(--fs-xl));
  color: rgba(255,255,255,0.65);
  max-width: 620px;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-2);
}

/* Stats */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-12);
  padding: var(--space-6) var(--space-8);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat__number {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat__plus {
  font-size: var(--fs-xl);
}

.stat__label {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--border-light);
  flex-shrink: 0;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.hero__scroll-dot {
  display: block;
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: var(--radius-full);
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(10px); opacity: 0.4; }
}

/* ---------- 9. SOLUTIONS ---------- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.solution-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.solution-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,102,204,0.4);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.solution-card:hover::before { transform: scaleX(1); }

.solution-card--featured {
  border-color: rgba(255,215,0,0.3);
  background: rgba(255,215,0,0.04);
}

.solution-card--featured::before { background: var(--color-gold); }
.solution-card--featured:hover { border-color: rgba(255,215,0,0.6); }

/* Variante esmeralda */
.solution-card--emerald { border-color: rgba(0,200,150,0.3); background: rgba(0,200,150,0.04); }
.solution-card--emerald::before { background: var(--color-emerald); }
.solution-card--emerald:hover { border-color: rgba(0,200,150,0.6); }
.solution-card--emerald .solution-card__icon { color: var(--color-emerald); }

/* Variante teal */
.solution-card--teal { border-color: rgba(0,180,216,0.3); background: rgba(0,180,216,0.04); }
.solution-card--teal::before { background: var(--color-teal); }
.solution-card--teal:hover { border-color: rgba(0,180,216,0.6); }
.solution-card--teal .solution-card__icon { color: var(--color-teal); }

/* Variante violeta */
.solution-card--violet { border-color: rgba(124,58,237,0.3); background: rgba(124,58,237,0.04); }
.solution-card--violet::before { background: var(--color-violet); }
.solution-card--violet:hover { border-color: rgba(124,58,237,0.6); }
.solution-card--violet .solution-card__icon { color: var(--color-violet); }

.solution-card__icon {
  width: 52px;
  height: 52px;
  color: var(--color-blue);
  flex-shrink: 0;
}

.solution-card--featured .solution-card__icon { color: var(--color-gold); }

.solution-card__badge {
  display: inline-flex;
  align-self: flex-start;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(0,102,204,0.2);
  color: var(--color-blue-light);
  border: 1px solid rgba(0,102,204,0.3);
}

.solution-card__badge--gold {
  background: rgba(255,215,0,0.12);
  color: var(--color-gold);
  border-color: rgba(255,215,0,0.3);
}

.solution-card--teal .solution-card__badge {
  background: rgba(0,180,216,0.15);
  color: var(--color-teal);
  border-color: rgba(0,180,216,0.3);
}

.solution-card--emerald .solution-card__badge {
  background: rgba(0,200,150,0.15);
  color: var(--color-emerald);
  border-color: rgba(0,200,150,0.3);
}

.solution-card__name {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.solution-card__fullname {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.5);
  margin-top: -var(--space-3);
  font-weight: 500;
}

.solution-card__desc {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  flex: 1;
}

.solution-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.tag {
  font-size: var(--fs-xs);
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
  white-space: nowrap;
}

/* ---------- 10. SERVICES ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: var(--bg-white);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-blue);
}

.service-card--featured {
  border-color: var(--color-blue);
  background: linear-gradient(135deg, #EBF5FF 0%, #F0F7FF 100%);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  color: var(--color-blue);
}

.service-card--featured .service-card__icon { color: var(--color-blue-dark); }

.service-card__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.service-card__desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.service-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.service-card__stack li {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-blue);
  background: rgba(0,102,204,0.08);
  border: 1px solid rgba(0,102,204,0.15);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* ---------- 11. CLIENTS ---------- */
.clients-carousel {
  overflow: hidden;
  margin-block: var(--space-8);
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.clients-track {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  animation: carouselScroll 30s linear infinite;
  width: max-content;
}

.clients-track:hover { animation-play-state: paused; }

@keyframes carouselScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.client-logo {
  flex-shrink: 0;
  min-width: 180px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.client-logo:hover {
  background: rgba(255,215,0,0.08);
  border-color: rgba(255,215,0,0.3);
}

.client-logo span {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: color var(--transition-base);
}

.client-logo:hover span { color: var(--color-gold); }

/* Partner badges */
.partner-badges {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.partner-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0,102,204,0.1);
  border: 1px solid rgba(0,102,204,0.25);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
  color: var(--color-blue-light);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.partner-badge svg {
  width: 18px;
  height: 18px;
  color: var(--color-gold);
  flex-shrink: 0;
}

/* ---------- 12. ABOUT ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-text .section-title { text-align: left; }
.about-text .section-eyebrow { display: block; text-align: left; }

.about-lead {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: var(--space-4);
}

.about-body {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.about-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.keyword-chip {
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: rgba(0,102,204,0.08);
  border: 1px solid rgba(0,102,204,0.2);
  color: var(--color-blue-dark);
  cursor: default;
  transition: all var(--transition-fast);
}

.keyword-chip:hover {
  background: var(--color-blue);
  color: var(--text-white);
  border-color: var(--color-blue);
}

/* About visual */
.about-visual {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about-card {
  background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-blue-dark) 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  text-align: center;
  box-shadow: var(--shadow-blue);
}

.about-year {
  font-size: var(--fs-6xl);
  font-weight: 900;
  color: var(--text-white);
  letter-spacing: -0.04em;
  line-height: 1;
}

.about-card__label {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.7);
  margin-top: var(--space-2);
  font-weight: 500;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.highlight {
  background: var(--bg-white);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.highlight__num {
  display: block;
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: -0.02em;
  line-height: 1;
}

.highlight__num sup {
  font-size: var(--fs-lg);
  font-weight: 700;
  vertical-align: super;
}

.highlight__txt {
  display: block;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-top: var(--space-2);
}

/* ---------- 13. CONTACT ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-item__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(0,102,204,0.12);
  border: 1px solid rgba(0,102,204,0.25);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue-light);
}

.contact-item__icon svg { width: 20px; height: 20px; }

.contact-item__label {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  margin-bottom: var(--space-1);
}

.contact-item__value {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}

.contact-item__link:hover { color: var(--color-gold); }

.contact-download {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255,215,0,0.06);
  border: 1px solid rgba(255,215,0,0.2);
  border-radius: var(--radius-md);
  margin-top: var(--space-2);
}

.contact-download svg {
  width: 24px;
  height: 24px;
  color: var(--color-gold);
  flex-shrink: 0;
}

.contact-download__link {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.8);
  line-height: 1.5;
  transition: color var(--transition-fast);
}

.contact-download__link:hover { color: var(--color-gold); }

/* Form */
.contact-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--text-white);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  width: 100%;
}

.form-group select option { background: var(--bg-dark); color: var(--text-white); }

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.3); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(0,102,204,0.2);
}

.form-group input.invalid,
.form-group select.invalid,
.form-group textarea.invalid { border-color: #FC5454; }

.form-group textarea { resize: vertical; min-height: 120px; }

.form-notice {
  font-size: var(--fs-sm);
  text-align: center;
  min-height: 1.5em;
  font-weight: 500;
}

.form-notice.success { color: #4ADE80; }
.form-notice.error   { color: #FC5454; }

/* ---------- 14. FOOTER ---------- */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-light);
  padding-block: var(--space-8);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer__logo {
  height: 94px;
  width: auto;
  object-fit: contain;
}

.footer__tagline {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.4);
  max-width: 260px;
  line-height: 1.5;
}

.footer__nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer__link {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.5);
  transition: color var(--transition-fast);
}

.footer__link:hover { color: var(--color-gold); }

.footer__copy {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.35);
  width: 100%;
  text-align: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-light);
}

/* ---------- 15. BACK TO TOP ---------- */
.whatsapp-btn {
  position: fixed;
  bottom: calc(var(--space-8) + 56px);
  right: var(--space-8);
  z-index: 900;
  width: 44px;
  height: 44px;
  overflow: hidden;
  background: #25D366;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(37,211,102,.4);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.whatsapp-btn:hover { background: #1ebe5d; transform: scale(1.08); }

.whatsapp-btn svg { width: 24px; height: 24px; }

.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: 900;
  width: 44px;
  height: 44px;
  background: var(--color-blue);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  box-shadow: var(--shadow-blue);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover { background: var(--color-blue-dark); }

.back-to-top svg { width: 20px; height: 20px; }

/* ---------- 16. Animations & Transitions ---------- */
/* Fade-in on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- 17. RESPONSIVE ---------- */

/* Tablet */
@media (max-width: 1024px) {
  .solutions-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .services-grid  { grid-template-columns: 1fr; gap: var(--space-4); }
  .about-layout   { grid-template-columns: 1fr; gap: var(--space-8); }
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-8); }

  .about-highlights { grid-template-columns: repeat(3, 1fr); }
  .hero__stats { gap: var(--space-6); }
}

/* Mobile nav breakpoint */
@media (max-width: 900px) {
  .hamburger { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(10,22,40,0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    padding: var(--space-4) var(--space-6);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
    pointer-events: none;
    z-index: 999;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .nav__link {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--fs-base);
  }

  .nav__link--cta { margin-left: 0; }

  /* Move lang selector into a row on mobile */
  .header__inner { gap: var(--space-4); }
  .lang-selector { order: 3; }
}

/* Small mobile */
@media (max-width: 640px) {
  :root { --space-24: 4rem; --space-20: 3rem; --space-16: 2.5rem; }

  .container { padding-inline: var(--space-4); }

  .hero__stats {
    flex-direction: column;
    gap: var(--space-4);
  }

  .stat__divider { width: 80px; height: 1px; }

  .hero__actions { flex-direction: column; align-items: center; }

  .form-row { grid-template-columns: 1fr; }

  .about-highlights { grid-template-columns: 1fr; }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__brand { flex-direction: column; }
  .footer__nav   { justify-content: center; }

  .back-to-top { bottom: var(--space-4); right: var(--space-4); }

  .partner-badges { flex-direction: column; align-items: center; }
}

/* ---------- 18. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .clients-track { animation: none; }
}