/* ========================================
   SIA Altura LV — Corporate Website Styles
   ======================================== */

:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #DBEAFE;
  --dark: #111827;
  --dark-muted: #374151;
  --gray: #6B7280;
  --gray-light: #9CA3AF;
  --bg: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --radius: 14px;
  --radius-sm: 10px;
  --transition: 0.3s ease;
  --header-height: 72px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark-muted);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

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

.container--narrow {
  max-width: 800px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--border);
}

.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn--white {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}

.btn--white:hover {
  background: var(--bg-secondary);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 14px;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--dark);
}

.nav__logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav__logo-text span {
  color: var(--primary);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--dark-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav__link--cta {
  background: var(--primary);
  color: #fff !important;
  margin-left: 8px;
}

.nav__link--cta:hover {
  background: var(--primary-dark);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}

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

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

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

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 60px) 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, #fff 50%, var(--primary-light) 100%);
  opacity: 0.6;
  z-index: -1;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: 18px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 540px;
}

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

.hero__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

/* Sections */
.section {
  padding: 100px 0;
}

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

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 17px;
  color: var(--gray);
}

/* Grid */
.grid {
  display: grid;
  gap: 24px;
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Cards */
.card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.card--service:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.card__text {
  font-size: 15px;
  color: var(--gray);
  line-height: 1.6;
}

/* Features */
.feature {
  text-align: center;
  padding: 24px 16px;
}

.feature__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 16px;
}

.feature__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.feature__text {
  font-size: 14px;
  color: var(--gray);
}

/* Stats */
.stats {
  background: var(--primary);
  padding: 80px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stats__number {
  display: block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}

.stats__label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
}

/* CTA Banner */
.cta-banner {
  background: var(--dark);
  padding: 64px 0;
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-banner__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.cta-banner__text {
  color: var(--gray-light);
  font-size: 17px;
}

/* About */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about__content p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.7;
}

.about__content .section__label,
.about__content .section__title {
  text-align: left;
}

.about__content .section__title {
  margin-bottom: 24px;
}

.about__mv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}

.about__mv-item h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.about__mv-item p {
  font-size: 14px;
  margin-bottom: 0;
}

.about__values h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}

.values-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.values-list li {
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 50px;
}

.about__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.about__image img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 6/7;
}

/* Service Detail */
.service-detail {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  margin-bottom: 24px;
  transition: all var(--transition);
}

.service-detail:hover {
  box-shadow: var(--shadow-sm);
}

.service-detail--alt {
  background: var(--bg-secondary);
}

.service-detail__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.service-detail__overview {
  font-size: 16px;
  color: var(--gray);
  margin-bottom: 24px;
}

.service-detail__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 24px;
}

.service-detail__cols h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.service-detail__cols ul {
  list-style: disc;
  padding-left: 20px;
}

.service-detail__cols li {
  font-size: 15px;
  color: var(--gray);
  margin-bottom: 6px;
  line-height: 1.5;
}

/* Industry Cards */
.industry-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}

.industry-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.industry-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  margin: 0 auto 14px;
}

.industry-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
}

/* Portfolio */
.portfolio-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.portfolio-card__image {
  overflow: hidden;
  aspect-ratio: 3/2;
}

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

.portfolio-card:hover .portfolio-card__image img {
  transform: scale(1.05);
}

.portfolio-card__body {
  padding: 24px;
}

.portfolio-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.portfolio-card__desc {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.6;
}

.portfolio-card__meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
  width: fit-content;
}

.portfolio-card__services {
  font-size: 13px;
  color: var(--gray-light);
}

/* Process */
.process {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 16px;
}

.process__step {
  text-align: center;
  padding: 24px 12px;
  position: relative;
}

.process__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin: 0 auto 16px;
}

.process__step h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.process__step p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.5;
}

/* FAQ */
.faq__item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq__item[open] {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq__question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--primary);
  transition: transform var(--transition);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

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

.faq__answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--gray);
  line-height: 1.7;
}

/* Contact */
.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group label span {
  color: #EF4444;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--dark);
  transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #EF4444;
}

.form-error {
  display: block;
  font-size: 13px;
  color: #EF4444;
  margin-top: 4px;
  min-height: 18px;
}

.form-success {
  margin-top: 16px;
  padding: 16px;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: var(--radius-sm);
  color: #065F46;
  font-size: 15px;
}

.contact-info__block {
  margin-bottom: 28px;
}

.contact-info__block h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}

.contact-info__block p {
  font-size: 15px;
  color: var(--gray);
  margin-bottom: 6px;
  line-height: 1.6;
}

.contact-info__map {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

/* Footer */
.footer {
  background: var(--dark);
  color: var(--gray-light);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  margin-bottom: 16px;
}

.footer__desc {
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
}

.footer__links h4,
.footer__contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer__links ul li {
  margin-bottom: 8px;
}

.footer__links a,
.footer__contact a {
  font-size: 14px;
  color: var(--gray-light);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__links a:hover,
.footer__contact a:hover {
  color: #fff;
}

.footer__contact p {
  font-size: 14px;
  margin-bottom: 6px;
  line-height: 1.6;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
}

.footer__legal {
  display: flex;
  gap: 24px;
}

.footer__legal a {
  color: var(--gray-light);
  text-decoration: none;
  font-size: 13px;
}

.footer__legal a:hover {
  color: #fff;
}

/* Legal Pages */
.legal-page {
  padding: calc(var(--header-height) + 60px) 0 80px;
}

.legal-page h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.legal-page .legal-updated {
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 40px;
}

.legal-page h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
  margin: 32px 0 12px;
}

.legal-page p,
.legal-page li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray);
  margin-bottom: 12px;
}

.legal-page ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 32px;
  text-decoration: none;
}

.legal-back:hover {
  color: var(--primary-dark);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .process {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    display: block;
    width: 100%;
    padding: 12px 16px;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

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

  .hero__image {
    order: -1;
  }

  .hero {
    padding-bottom: 60px;
  }

  .section {
    padding: 72px 0;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

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

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

  .service-detail__cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

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

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

  .footer__bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer__legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

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

  .contact-form {
    padding: 24px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}