/**
 * Layout & Grid System
 * Sistema de layout responsive y estructura de página
 */

/* ========================================
   CONTAINER
   ======================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Container variantes */
.container--narrow {
  max-width: 1000px;
}

.container--wide {
  max-width: 1600px;
}

.container--full {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

/* ========================================
   SECCIONES
   ======================================== */

section {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  section {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

/* ========================================
   SECTION HEADERS
   ======================================== */

.section-header {
  margin-bottom: var(--space-16);
  max-width: 800px;
}

.section-header--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

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

.section-header__title {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-tight);
}

.section-header__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
}

.section-header--center .section-header__description {
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .section-header__title {
    font-size: var(--font-size-4xl);
  }
  
  .section-header__description {
    font-size: var(--font-size-base);
  }
}

/* ========================================
   GRIDS
   ======================================== */

/* Grid básico */
.grid {
  display: grid;
  gap: var(--space-8);
}

/* Variantes de columnas */
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

/* Grid responsive automático */
.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ========================================
   FLEXBOX UTILITIES
   ======================================== */

.flex {
  display: flex;
}

.flex--center {
  justify-content: center;
  align-items: center;
}

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

.flex--column {
  flex-direction: column;
}

.flex--wrap {
  flex-wrap: wrap;
}

/* Gaps para flex */
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }

/* ========================================
   NAVBAR
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--navbar-bg);
  box-shadow: var(--navbar-shadow);
  backdrop-filter: blur(10px);
  transition: transform var(--transition-base);
}

.navbar--hidden {
  transform: translateY(-100%);
}

.navbar__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
  gap: var(--space-8);
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-black);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.navbar__logo:hover {
  transform: scale(1.05);
  opacity: 1;
}

.logo__text {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.navbar__link {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.navbar__link:hover {
  color: var(--color-primary);
  opacity: 1;
}

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

/* Mobile menu toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.navbar__toggle-line {
  width: 24px;
  height: 3px;
  background: var(--color-black);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

@media (max-width: 1024px) {
  .navbar__menu {
    display: none;
  }
  
  .navbar__toggle {
    display: flex;
  }
}

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

.hero {
  min-height: var(--hero-min-height);
  padding-top: calc(var(--navbar-height) + var(--space-20));
  padding-bottom: var(--hero-padding-y);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: var(--z-below);
  pointer-events: none;
}

.hero__bg-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.6;
  filter: blur(80px);
}

.hero__bg-shape--1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary-light);
  top: -100px;
  right: -100px;
}

.hero__bg-shape--2 {
  width: 400px;
  height: 400px;
  background: var(--color-secondary);
  bottom: -100px;
  left: -100px;
}

.hero__bg-shape--3 {
  width: 300px;
  height: 300px;
  background: var(--color-accent-yellow);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero__content {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.hero__badge {
  margin-bottom: var(--space-6);
  animation: float 3s ease-in-out infinite;
}

.hero__title {
  font-size: var(--font-size-8xl);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-8);
}

.hero__title-line {
  display: block;
}

.hero__description {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  max-width: 700px;
  margin: 0 auto var(--space-10);
  line-height: var(--line-height-relaxed);
}

.hero__cta {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero__stats {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-12);
}

@media (max-width: 1024px) {
  .hero__title {
    font-size: var(--font-size-6xl);
  }
  
  .hero__description {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: calc(var(--navbar-height) + var(--space-12));
  }
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  .hero__description {
    font-size: var(--font-size-base);
  }
  
  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero__stats {
    gap: var(--space-6);
  }
}

/* ========================================
   SCROLL INDICATOR
   ======================================== */

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator__text {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
}

.scroll-indicator__line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gray-400), transparent);
}

@media (max-width: 768px) {
  .scroll-indicator {
    display: none;
  }
}

/* ========================================
   SERVICES GRID
   ======================================== */

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-10);
}

@media (max-width: 768px) {
  .services__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ========================================
   PROJECTS STACK
   ======================================== */

.projects__stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.projects__cta {
  text-align: center;
}

/* ========================================
   TESTIMONIALS CAROUSEL
   ======================================== */

.testimonials__carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-10);
}

@media (max-width: 768px) {
  .testimonials__carousel {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

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

.footer {
  background: var(--color-bg-dark);
  color: var(--color-gray-100);
  padding-top: var(--space-20);
  padding-bottom: var(--space-8);
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.footer__main {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--space-16);
}

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

.footer__logo {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  color: var(--color-white);
}

.footer__tagline {
  color: var(--color-gray-300);
  font-size: var(--font-size-base);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.footer__column-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__list a {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer__list--contact li {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gray-700);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

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

.footer__legal a {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer__separator {
  color: var(--color-gray-600);
}

@media (max-width: 1024px) {
  .footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .footer__links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .footer__links {
    grid-template-columns: 1fr;
  }
  
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}