/* =============================================
   Lab Carioca — Landing Page Styles
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222222;
  --accent: #00f0ff;
  --accent-alt: #7b2ff7;
  --accent-glow: rgba(0, 240, 255, 0.15);
  --accent-glow-strong: rgba(0, 240, 255, 0.3);
  --text-primary: #f0f0f0;
  --text-secondary: #999999;
  --text-muted: #666666;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

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

button {
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
  font-family: inherit;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: #000;
  box-shadow: 0 0 30px var(--accent-glow);
}

.btn--primary:hover {
  box-shadow: 0 0 50px var(--accent-glow-strong);
  transform: translateY(-2px);
}

.btn--outline {
  border: 1px solid var(--border-hover);
  color: var(--text-primary);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ---------- Animations ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition);
}

.header.is-scrolled {
  padding: 12px 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-lab {
  color: var(--text-primary);
}

.logo-carioca {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__nav {
  display: flex;
  gap: 36px;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

/* Mobile Menu Button */
.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.header__menu-btn.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-btn.is-active span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(123, 47, 247, 0.06) 0%, transparent 60%),
    var(--bg-primary);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 120px 0 80px;
  max-width: 720px;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero__tag::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero__desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 540px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  right: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ---------- Sections ---------- */
.section {
  padding: 120px 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__tag {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.feature:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.feature__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--accent-glow);
  color: var(--accent);
  margin-bottom: 20px;
}

.feature__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Categories ---------- */
.categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.category {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.category:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.category__image {
  width: 200px;
  min-height: 200px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--bg-secondary);
}

.category__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.category:hover .category__image img {
  transform: scale(1.05);
}

.category__info {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.category__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.category__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: 16px;
}

.gallery__item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
}

.gallery__item--tall {
  grid-row: span 2;
}

.gallery__item--wide {
  grid-column: span 2;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery__item:hover img {
  transform: scale(1.08);
}

.gallery__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery__item:hover .gallery__overlay {
  opacity: 1;
}

.gallery__label {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ---------- Instagram Widget ---------- */
.instagram-widget {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.instagram-widget__item {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.instagram-widget__item img {
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform var(--transition);
}

.instagram-widget__item:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 40px var(--accent-glow);
}

.instagram-widget__item:hover img {
  transform: scale(1.04);
}

.instagram-widget__actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
}

/* ---------- Contact ---------- */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact__card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.contact__card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: var(--accent-glow);
  color: var(--accent);
  flex-shrink: 0;
}

.contact__card-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact__card-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

.contact__card-value:hover {
  color: var(--accent);
}

/* Contact Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: var(--text-muted);
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding-top: 64px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer__text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 300px;
  line-height: 1.6;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer__links a:hover {
  color: var(--accent);
}

.footer__bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- WhatsApp Float ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: all var(--transition);
  animation: whatsappPulse 2s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6); }
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1024px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery {
    grid-auto-rows: 240px;
  }

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

@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 100px 40px 40px;
    gap: 24px;
    transition: right var(--transition);
    border-left: 1px solid var(--border);
  }

  .header__nav.is-open {
    right: 0;
  }

  .nav__link {
    font-size: 1.1rem;
  }

  .header__menu-btn {
    display: flex;
    z-index: 1001;
  }

  .hero__content {
    padding: 140px 0 60px;
  }

  .hero__scroll {
    display: none;
  }

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

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

  .category {
    flex-direction: column;
  }

  .category__image {
    width: 100%;
    min-height: 180px;
    height: 180px;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }

  .gallery__item--tall {
    grid-row: span 1;
  }

  .gallery__item--wide {
    grid-column: span 1;
  }

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

  .instagram-widget {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 80px 0;
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    justify-content: center;
  }

  .gallery {
    grid-template-columns: 1fr;
    grid-auto-rows: 240px;
  }

  .instagram-widget {
    grid-template-columns: 1fr;
  }
}