/* ============================================================
   style.css — Nucleotech Service, LDA
   ============================================================ */

/* --- CSS Custom Properties --- */

:root {
  /* Colors */
  --bg-base: #0A0E1A;
  --bg-surface: #0D1120;
  --bg-card: #111827;
  --bg-card-hover: #161f30;
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.15);
  --accent-primary: #1B6FCC;
  --accent-primary-dark: #145DB5;
  --accent-blue: #3B82F6;
  --accent-blue-dim: rgba(59, 130, 246, 0.2);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 80px;

  /* Border radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* Typography */
  --font-main: 'Inter', sans-serif;

  /* Transitions */
  --transition: all 0.2s ease;
}

/* --- Reset --- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

ul {
  list-style: none;
}

button {
  font-family: var(--font-main);
}

/* --- Base --- */

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  max-width: 100%;
}

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  max-width: 100%;
  position: relative;
}

/* --- Buttons --- */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(27, 111, 204, 0.4);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-secondary);
}

/* --- Section helpers --- */

.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--accent-primary);
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(26px, 3.5vw, 44px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 560px;
}

.section-header-center {
  text-align: center;
  margin-bottom: 56px;
}

.section-header-center .section-sub {
  margin: 0 auto;
}

/* ============================================================
   NAVIGATION
   ============================================================ */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 68px;
  background: transparent;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 5%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

nav.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 1.5px;
  background: var(--accent-primary);
  transition: width 0.25s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  background: var(--accent-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-cta:hover {
  background: var(--accent-primary-dark);
  transform: translateY(-1px);
}

/* Hamburger */

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 24px 5% 32px;
  flex-direction: column;
  gap: 20px;
  z-index: 999;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--text-primary);
}

/* ============================================================
   HERO
   ============================================================ */

#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: 68px;
  padding-bottom: 100px;
}

#particles-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding: 0 5%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-primary);
  border: 1px solid rgba(27, 111, 204, 0.3);
  background: rgba(27, 111, 204, 0.08);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 28px;
}

.hero-content h1 {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.08;
  margin-bottom: 24px;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: clamp(16px, 2vw, 20px);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  z-index: 2;
}

.bounce-arrow {
  animation: bounce 1.8s ease-in-out infinite;
  color: var(--text-muted);
}

/* ============================================================
   SOBRE
   ============================================================ */

#sobre {
  padding: var(--space-2xl) 5%;
  background: var(--bg-surface);
  overflow: hidden;
}

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.sobre-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.stat-card {
  border-left: 3px solid var(--accent-primary);
  padding: 16px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.stat-card:last-child {
  margin-bottom: 0;
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ============================================================
   SETORES — Bento Grid
   ============================================================ */

#setores {
  padding: var(--space-2xl) 5%;
  overflow: hidden;
}

.setores-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}

.setor-card:nth-child(1) {
  grid-column: span 2;
}

.setor-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.setor-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 40px rgba(27, 111, 204, 0.15);
}

.setor-icon {
  width: 44px;
  height: 44px;
  background: rgba(27, 111, 204, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-primary);
}

.setor-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.setor-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.setor-tags {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.setor-tag {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(27, 111, 204, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(27, 111, 204, 0.25);
}

/* ============================================================
   ECOSSISTEMA
   ============================================================ */

#ecossistema {
  padding: var(--space-2xl) 5%;
  background: var(--bg-surface);
}

.eco-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.eco-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.eco-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eco-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.eco-badge {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}

.eco-badge:hover {
  background: color-mix(in srgb, var(--brand, #1B6FCC) 12%, transparent);
  border-color: color-mix(in srgb, var(--brand, #1B6FCC) 50%, transparent);
  color: var(--brand, #1B6FCC);
}

/* ============================================================
   SERVIÇOS — Tabs
   ============================================================ */

#servicos {
  padding: var(--space-2xl) 5%;
  overflow: hidden;
}

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-btn:hover:not(.active) {
  color: var(--text-secondary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  animation: fadeInUp 0.35s ease;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.service-icon {
  width: 40px;
  height: 40px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--accent-blue);
}

.service-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.service-tags {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.service-tag {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ============================================================
   PARCEIROS
   ============================================================ */

#parceiros {
  display: grid;
  grid-template-columns: 1fr 4px 1fr;
  min-height: 400px;
}

.parceiro-left {
  background: #060D1F;
  padding: var(--space-xl) 5%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.parceiro-right {
  background: #0A0F1A;
  padding: var(--space-xl) 5%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.parceiro-divider {
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-blue));
}

.parceiro-name {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.parceiro-badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.parceiro-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

.parceiro-feature svg {
  flex-shrink: 0;
  color: var(--accent-primary);
}

.parceiro-right .parceiro-feature svg {
  color: var(--accent-blue);
}

/* ============================================================
   CLIENTES — Marquee
   ============================================================ */

#clientes {
  padding: var(--space-2xl) 5%;
  background: var(--bg-surface);
  overflow: hidden;
}

.marquee-wrapper {
  overflow: hidden;
  margin-top: 32px;
}

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

.marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.marquee-track-reverse {
  animation-direction: reverse;
  animation-duration: 32s;
  margin-top: 14px;
}

.client-badge {
  font-size: 13px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
  transition: var(--transition);
}

.client-badge:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

/* ============================================================
   CTA FINAL
   ============================================================ */

#cta {
  padding: var(--space-2xl) 5%;
  background: var(--bg-surface);
  text-align: center;
  position: relative;
  overflow: hidden;
  background-image: radial-gradient(rgba(27, 111, 204, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
}

.cta-headline {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.cta-sub {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 480px;
  margin: 0 auto 32px;
}

.cta-contacts {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.cta-contact-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.cta-contact-link:hover {
  color: var(--accent-primary);
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  padding: 48px 5% 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-base);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 12px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================================
   RESPONSIVE — 768px
   ============================================================ */

@media (max-width: 768px) {
  .nav-links,
  .btn-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .sobre-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .setor-card:nth-child(1) {
    grid-column: span 1;
  }

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

  .tab-panel.active {
    grid-template-columns: 1fr;
  }

  #parceiros {
    grid-template-columns: 1fr;
    grid-template-rows: auto 4px auto;
  }

  .parceiro-divider {
    background: linear-gradient(to right, var(--accent-primary), var(--accent-blue));
    min-height: 4px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* ============================================================
   RESPONSIVE — 480px
   ============================================================ */

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .cta-contacts {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .hero-content h1 {
    letter-spacing: -1px;
  }
}