/* =========================================================
   Variables y configuración general
========================================================= */

:root {
  --primary: #0057d9;
  --primary-dark: #0045ad;
  --dark-blue: #082b59;
  --orange: #ff8a00;
  --orange-dark: #e87900;
  --white: #ffffff;
  --light-background: #f4f7fb;
  --main-text: #172033;
  --secondary-text: #687386;
  --border-color: #dce4ef;
  --success: #108a4f;
  --danger: #dc3545;

  --header-height: 78px;
  --container-width: 1200px;

  --radius-small: 12px;
  --radius-medium: 16px;
  --radius-large: 24px;

  --shadow-small: 0 8px 24px rgba(8, 43, 89, 0.08);
  --shadow-medium: 0 18px 50px rgba(8, 43, 89, 0.12);
  --shadow-large: 0 28px 70px rgba(8, 43, 89, 0.18);

  --transition: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--main-text);
  background: var(--white);
  font-family: "Manrope", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
}

button,
a,
input,
select {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(0, 87, 217, 0.25);
  outline-offset: 3px;
}

button:active,
a:active {
  transform: scale(0.98);
}

[hidden] {
  display: none !important;
}

.container {
  width: min(calc(100% - 32px), var(--container-width));
  margin-inline: auto;
}

.section-padding {
  padding: 80px 0;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}

.section-heading h2,
.search-card-header h2,
.faq-intro h2,
.newsletter-card h2 {
  margin: 0;
  color: var(--dark-blue);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.section-heading p,
.faq-intro > p,
.newsletter-card p {
  max-width: 650px;
  margin: 14px 0 0;
  color: var(--secondary-text);
}

.centered-heading {
  display: block;
  max-width: 760px;
  margin-right: auto;
  margin-bottom: 40px;
  margin-left: auto;
  text-align: center;
}

.centered-heading p {
  margin-right: auto;
  margin-left: auto;
}

.primary-button,
.outline-button,
.promotion-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  border-radius: 14px;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition),
    color var(--transition);
}

/* =========================================================
   Header
========================================================= */

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--transition),
    box-shadow var(--transition),
    color var(--transition),
    border-color var(--transition);
}

.site-header.scrolled,
.site-header.menu-visible {
  color: var(--main-text);
  border-color: rgba(8, 43, 89, 0.08);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 30px rgba(8, 43, 89, 0.08);
  backdrop-filter: blur(18px);
}

.header-container {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  border-radius: 12px;
  background: var(--orange);
  box-shadow: 0 8px 20px rgba(255, 138, 0, 0.3);
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  padding: 10px 13px;
  font-size: 0.91rem;
  font-weight: 700;
  transition: color var(--transition);
}

.nav-link::after {
  position: absolute;
  right: 13px;
  bottom: 3px;
  left: 13px;
  height: 2px;
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  border-radius: 2px;
  background: var(--orange);
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--orange);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.login-button {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  color: inherit;
  border: 1px solid currentColor;
  border-radius: 13px;
  background: transparent;
  font-size: 0.88rem;
  font-weight: 800;
  cursor: pointer;
  transition:
    color var(--transition),
    background-color var(--transition),
    border-color var(--transition);
}

.login-button:hover {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

.menu-button {
  display: flex;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: inherit;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: background-color var(--transition);
}

.site-header.scrolled .menu-button,
.site-header.menu-visible .menu-button {
  background: var(--light-background);
}

.menu-button span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.menu-button.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-button.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  z-index: 999;
  top: var(--header-height);
  right: 0;
  left: 0;
  display: flex;
  max-height: 0;
  overflow: hidden;
  flex-direction: column;
  gap: 4px;
  padding: 0 16px;
  color: var(--main-text);
  border-top: 1px solid transparent;
  background: var(--white);
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 22px 40px rgba(8, 43, 89, 0.12);
  transition:
    max-height 350ms ease,
    padding 350ms ease,
    opacity var(--transition),
    visibility var(--transition);
}

.mobile-menu.open {
  max-height: 500px;
  padding-top: 14px;
  padding-bottom: 20px;
  border-color: var(--border-color);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-link {
  padding: 13px 12px;
  border-radius: 10px;
  font-weight: 700;
  transition:
    color var(--transition),
    background-color var(--transition);
}

.mobile-nav-link:hover {
  color: var(--primary);
  background: var(--light-background);
}

.mobile-login-button {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-top: 8px;
  color: var(--white);
  border-radius: 12px;
  background: var(--primary);
  font-weight: 800;
  cursor: pointer;
}

/* =========================================================
   Hero
========================================================= */

.hero {
  position: relative;
  display: flex;
  min-height: 740px;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--header-height) + 70px) 0 180px;
  color: var(--white);
  background:
    url("https://images.unsplash.com/photo-1436491865332-7a61a109cc05?auto=format&fit=crop&w=2000&q=88")
    center 58% / cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      rgba(5, 29, 61, 0.94) 0%,
      rgba(5, 29, 61, 0.75) 48%,
      rgba(5, 29, 61, 0.27) 100%
    ),
    linear-gradient(
      180deg,
      rgba(5, 29, 61, 0.18) 0%,
      rgba(5, 29, 61, 0.46) 100%
    );
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 760px;
}

.hero-eyebrow {
  color: #cbe0ff;
}

.hero-copy h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.45rem, 8vw, 4.75rem);
  line-height: 1.03;
  letter-spacing: -0.058em;
}

.hero-copy > p {
  max-width: 650px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-button {
  min-height: 56px;
  padding: 0 24px;
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 16px 35px rgba(255, 138, 0, 0.3);
}

.hero-button:hover {
  transform: translateY(-3px);
  background: var(--orange-dark);
  box-shadow: 0 20px 40px rgba(255, 138, 0, 0.4);
}

.secondary-hero-button {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 800;
  backdrop-filter: blur(8px);
  transition:
    background-color var(--transition),
    border-color var(--transition);
}

.secondary-hero-button:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.16);
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-top: 36px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.88rem;
  font-weight: 700;
}

.hero-features div {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-features i {
  color: #ffb55c;
}

/* =========================================================
   Buscador
========================================================= */

.search-section {
  position: relative;
  z-index: 10;
  margin-top: -128px;
  padding-bottom: 70px;
}

.flight-search-card {
  padding: 22px;
  border: 1px solid rgba(220, 228, 239, 0.85);
  border-radius: var(--radius-large);
  background: var(--white);
  box-shadow: var(--shadow-large);
}

.search-card-header {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 24px;
}

.search-card-header h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
}

.trip-type-selector {
  display: flex;
  width: 100%;
  padding: 5px;
  border-radius: 14px;
  background: var(--light-background);
}

.trip-option {
  flex: 1;
  cursor: pointer;
}

.trip-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.trip-option span {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--secondary-text);
  font-size: 0.84rem;
  font-weight: 800;
  text-align: center;
  transition:
    color var(--transition),
    background-color var(--transition),
    box-shadow var(--transition);
}

.trip-option input:checked + span {
  color: var(--primary);
  background: var(--white);
  box-shadow: 0 5px 18px rgba(8, 43, 89, 0.09);
}

.trip-option input:focus-visible + span {
  outline: 3px solid rgba(0, 87, 217, 0.2);
}

.flight-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.route-fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.form-field {
  position: relative;
  min-width: 0;
}

.form-field label {
  display: block;
  margin-bottom: 8px;
  color: var(--main-text);
  font-size: 0.8rem;
  font-weight: 800;
}

.input-wrapper {
  position: relative;
}

.input-wrapper > i:first-child {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 16px;
  color: var(--primary);
  transform: translateY(-50%);
  pointer-events: none;
}

.input-wrapper input,
.input-wrapper select {
  width: 100%;
  height: 56px;
  padding: 0 42px 0 46px;
  color: var(--main-text);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  outline: none;
  background: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.input-wrapper input:hover,
.input-wrapper select:hover {
  border-color: #b7c5d8;
}

.input-wrapper input:focus,
.input-wrapper select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 87, 217, 0.1);
}

.input-wrapper input::placeholder {
  color: #99a2b1;
  font-weight: 500;
}

.input-wrapper select {
  cursor: pointer;
  appearance: none;
}

.select-arrow {
  position: absolute;
  top: 50%;
  right: 16px;
  color: var(--secondary-text);
  transform: translateY(-50%);
  pointer-events: none;
}

.form-field.has-error .input-wrapper input,
.form-field.has-error .input-wrapper select {
  border-color: var(--danger);
  background: #fffafa;
}

.field-error {
  display: block;
  min-height: 18px;
  margin-top: 5px;
  color: var(--danger);
  font-size: 0.72rem;
  font-weight: 700;
}

.swap-button {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  align-self: end;
  justify-self: center;
  margin: -8px 0;
  color: var(--primary);
  border: 1px solid #c9d9ef;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow-small);
  cursor: pointer;
  transition:
    color var(--transition),
    transform var(--transition),
    background-color var(--transition),
    border-color var(--transition);
}

.swap-button:hover {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
  transform: rotate(180deg);
}

.return-date-hidden {
  display: none;
}

.search-submit-button {
  position: relative;
  display: flex;
  width: 100%;
  min-height: 56px;
  align-self: end;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 20px;
  color: var(--white);
  border-radius: 14px;
  background: var(--orange);
  box-shadow: 0 12px 26px rgba(255, 138, 0, 0.24);
  font-weight: 800;
  cursor: pointer;
  transition:
    background-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.search-submit-button:hover {
  transform: translateY(-2px);
  background: var(--orange-dark);
  box-shadow: 0 16px 32px rgba(255, 138, 0, 0.32);
}

.search-submit-button:disabled {
  cursor: wait;
}

.button-content,
.button-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
}

.button-loader {
  display: none;
}

.search-submit-button.loading .button-content {
  display: none;
}

.search-submit-button.loading .button-loader {
  display: flex;
}

.loader-spinner {
  width: 19px;
  height: 19px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spinner 700ms linear infinite;
}

.form-message {
  min-height: 20px;
  margin-top: 14px;
  color: var(--danger);
  font-size: 0.84rem;
  font-weight: 700;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

/* =========================================================
   Resultados de vuelos
========================================================= */

.results-section {
  padding: 10px 0 80px;
  background: var(--light-background);
}

.results-section.showing {
  animation: sectionReveal 500ms ease both;
}

.results-heading {
  padding-top: 60px;
}

.filter-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  color: var(--primary);
  border: 1px solid #cbd9eb;
  border-radius: 12px;
  background: var(--white);
  font-weight: 800;
  cursor: pointer;
}

.results-list {
  display: grid;
  gap: 16px;
}

.flight-result-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 22px;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--shadow-small);
  opacity: 0;
  transform: translateY(20px);
  animation: resultReveal 500ms ease forwards;
}

.flight-result-card:nth-child(2) {
  animation-delay: 120ms;
}

.flight-result-card:nth-child(3) {
  animation-delay: 240ms;
}

.airline-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.airline-logo {
  display: grid;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  place-items: center;
  color: var(--white);
  border-radius: 14px;
  background: var(--primary);
  font-size: 1.1rem;
}

.airline-info h3 {
  margin: 0;
  color: var(--dark-blue);
  font-size: 1rem;
}

.airline-info p {
  margin: 2px 0 0;
  color: var(--secondary-text);
  font-size: 0.78rem;
}

.flight-route-details {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.flight-time {
  min-width: 0;
}

.flight-time:last-child {
  text-align: right;
}

.flight-time strong {
  display: block;
  color: var(--dark-blue);
  font-size: 1.3rem;
}

.flight-time span {
  display: block;
  overflow: hidden;
  color: var(--secondary-text);
  font-size: 0.8rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flight-line {
  position: relative;
  width: 72px;
  color: var(--primary);
  border-top: 1px dashed #aebdd1;
  text-align: center;
}

.flight-line i {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 0 6px;
  background: var(--white);
  transform: translate(-50%, -50%);
}

.flight-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.flight-meta span {
  padding: 7px 10px;
  color: var(--secondary-text);
  border-radius: 9px;
  background: var(--light-background);
  font-size: 0.72rem;
  font-weight: 700;
}

.flight-price {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.flight-price > span {
  color: var(--secondary-text);
  font-size: 0.75rem;
}

.flight-price strong {
  color: var(--dark-blue);
  font-size: 1.45rem;
}

.flight-price small {
  color: var(--secondary-text);
  font-weight: 700;
}

.select-flight-button {
  width: 100%;
  min-height: 45px;
  margin-top: 12px;
  color: var(--white);
  border-radius: 12px;
  background: var(--primary);
  font-weight: 800;
  cursor: pointer;
  transition:
    background-color var(--transition),
    transform var(--transition);
}

.select-flight-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

@keyframes resultReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes sectionReveal {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* =========================================================
   Ofertas
========================================================= */

.offers-section {
  background: var(--white);
}

.offers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.offer-card {
  overflow: hidden;
  border: 1px solid #e3e9f1;
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--shadow-small);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.offer-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-medium);
}

.offer-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.offer-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 550ms ease;
}

.offer-card:hover .offer-image img {
  transform: scale(1.07);
}

.discount-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 7px 11px;
  color: var(--white);
  border-radius: 9px;
  background: var(--orange);
  box-shadow: 0 8px 20px rgba(255, 138, 0, 0.3);
  font-size: 0.76rem;
  font-weight: 800;
}

.offer-content {
  padding: 20px;
}

.offer-route {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--dark-blue);
  font-size: 1rem;
  font-weight: 800;
}

.offer-route i {
  color: var(--primary);
  font-size: 0.78rem;
  transform: rotate(-8deg);
}

.offer-content > p {
  margin: 9px 0 20px;
  color: var(--secondary-text);
  font-size: 0.8rem;
}

.offer-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.offer-footer > div {
  display: flex;
  flex-direction: column;
}

.offer-footer span {
  color: var(--secondary-text);
  font-size: 0.72rem;
}

.offer-footer strong {
  color: var(--dark-blue);
  font-size: 1.35rem;
  line-height: 1.2;
}

.offer-footer small {
  color: var(--secondary-text);
  font-weight: 700;
}

.outline-button {
  min-height: 42px;
  padding: 0 14px;
  color: var(--primary);
  border: 1px solid #bcd0eb;
  background: transparent;
}

.outline-button:hover {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

/* =========================================================
   Destinos
========================================================= */

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

.section-link {
  display: none;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 800;
  transition: gap var(--transition);
}

.section-link:hover {
  gap: 13px;
}

.destinations-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.destination-card {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  border-radius: 20px;
  background: var(--dark-blue);
  box-shadow: var(--shadow-small);
}

.destination-card img {
  width: 100%;
  height: 100%;
  min-height: 310px;
  object-fit: cover;
  transition: transform 600ms ease;
}

.destination-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      rgba(8, 43, 89, 0.04) 30%,
      rgba(8, 43, 89, 0.9) 100%
    );
  transition: background-color var(--transition);
}

.destination-content {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 24px;
  color: var(--white);
  transform: translateY(4px);
  transition: transform var(--transition);
}

.destination-content span {
  color: #d5e4f9;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.destination-content h3 {
  margin: 3px 0;
  font-size: 1.55rem;
  letter-spacing: -0.035em;
}

.destination-content p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.82rem;
  font-weight: 700;
}

.destination-card:hover img {
  transform: scale(1.08);
}

.destination-card:hover .destination-content {
  transform: translateY(-5px);
}

/* =========================================================
   Beneficios
========================================================= */

.benefits-section {
  background: var(--white);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.benefit-card {
  padding: 28px 24px;
  border: 1px solid #e3e9f1;
  border-radius: 20px;
  background: var(--white);
  text-align: center;
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.benefit-card:hover {
  transform: translateY(-6px);
  border-color: #bdd2ef;
  box-shadow: var(--shadow-medium);
}

.benefit-icon {
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  margin: 0 auto 18px;
  color: var(--primary);
  border-radius: 18px;
  background: #eaf2ff;
  font-size: 1.4rem;
  transition:
    color var(--transition),
    background-color var(--transition),
    transform var(--transition);
}

.benefit-card:hover .benefit-icon {
  color: var(--white);
  background: var(--primary);
  transform: rotate(-5deg) scale(1.05);
}

.benefit-card h3 {
  margin: 0;
  color: var(--dark-blue);
  font-size: 1.05rem;
}

.benefit-card p {
  margin: 10px 0 0;
  color: var(--secondary-text);
  font-size: 0.85rem;
}

/* =========================================================
   Banner promocional
========================================================= */

.promotion-section {
  padding-top: 20px;
}

.promotion-banner {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  border-radius: 26px;
  background:
    url("https://images.unsplash.com/photo-1583997052301-0042b33fc598?auto=format&fit=crop&w=1800&q=88")
    center / cover no-repeat;
  box-shadow: var(--shadow-large);
}

.promotion-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      rgba(8, 43, 89, 0.96) 0%,
      rgba(8, 43, 89, 0.78) 50%,
      rgba(8, 43, 89, 0.2) 100%
    );
}

.promotion-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 480px;
  max-width: 680px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 36px 24px;
  color: var(--white);
}

.light-eyebrow {
  color: #bfd8ff;
}

.promotion-content h2 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.promotion-content p {
  max-width: 580px;
  margin: 20px 0 28px;
  color: rgba(255, 255, 255, 0.82);
}

.promotion-button {
  min-height: 54px;
  padding: 0 22px;
  color: var(--dark-blue);
  background: var(--white);
}

.promotion-button:hover {
  transform: translateY(-3px);
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 16px 35px rgba(255, 138, 0, 0.24);
}

/* =========================================================
   Preguntas frecuentes
========================================================= */

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

.faq-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.faq-intro > p {
  max-width: 480px;
}

.faq-support-card {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-top: 28px;
  padding: 20px;
  border: 1px solid #dce5f1;
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--shadow-small);
}

.faq-support-card > div:first-child {
  display: grid;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  place-items: center;
  color: var(--white);
  border-radius: 14px;
  background: var(--primary);
}

.faq-support-card h3 {
  margin: 0;
  color: var(--dark-blue);
  font-size: 0.95rem;
}

.faq-support-card p {
  margin: 4px 0 7px;
  color: var(--secondary-text);
  font-size: 0.8rem;
}

.faq-support-card a {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 800;
}

.accordion {
  display: grid;
  gap: 12px;
}

.accordion-item {
  overflow: hidden;
  border: 1px solid #dce5f1;
  border-radius: 16px;
  background: var(--white);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.accordion-item.active {
  border-color: #bcd0ec;
  box-shadow: var(--shadow-small);
}

.accordion-trigger {
  display: flex;
  width: 100%;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  color: var(--dark-blue);
  background: transparent;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.accordion-trigger i {
  display: grid;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  place-items: center;
  color: var(--primary);
  border-radius: 10px;
  background: #edf4ff;
  transition:
    transform var(--transition),
    color var(--transition),
    background-color var(--transition);
}

.accordion-item.active .accordion-trigger i {
  color: var(--white);
  background: var(--primary);
  transform: rotate(45deg);
}

.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 320ms ease;
}

.accordion-content > div {
  overflow: hidden;
}

.accordion-content p {
  margin: 0;
  padding: 0 18px 20px;
  color: var(--secondary-text);
  font-size: 0.86rem;
}

.accordion-item.active .accordion-content {
  grid-template-rows: 1fr;
}

/* =========================================================
   Newsletter
========================================================= */

.newsletter-section {
  padding: 80px 0;
  color: var(--white);
  background: var(--dark-blue);
}

.newsletter-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.1),
      rgba(255, 255, 255, 0.035)
    );
}

.newsletter-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.newsletter-icon {
  display: grid;
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  place-items: center;
  color: var(--white);
  border-radius: 18px;
  background: var(--orange);
  box-shadow: 0 12px 28px rgba(255, 138, 0, 0.26);
  font-size: 1.35rem;
}

.newsletter-content span {
  display: block;
  margin-bottom: 6px;
  color: #aacbfa;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.newsletter-card h2 {
  color: var(--white);
  font-size: clamp(1.7rem, 5vw, 2.35rem);
}

.newsletter-card p {
  color: rgba(255, 255, 255, 0.68);
}

.newsletter-form {
  align-self: center;
}

.newsletter-input-wrapper {
  position: relative;
}

.newsletter-input-wrapper i {
  position: absolute;
  top: 50%;
  left: 17px;
  color: var(--primary);
  transform: translateY(-50%);
}

.newsletter-input-wrapper input {
  width: 100%;
  height: 56px;
  padding: 0 16px 0 46px;
  color: var(--main-text);
  border: 2px solid transparent;
  border-radius: 14px;
  outline: none;
  background: var(--white);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.newsletter-input-wrapper input:focus {
  border-color: #80b5ff;
  box-shadow: 0 0 0 4px rgba(128, 181, 255, 0.18);
}

.newsletter-form button {
  width: 100%;
  min-height: 54px;
  margin-top: 10px;
  color: var(--white);
  border-radius: 14px;
  background: var(--orange);
  font-weight: 800;
  cursor: pointer;
  transition:
    background-color var(--transition),
    transform var(--transition);
}

.newsletter-form button:hover {
  transform: translateY(-2px);
  background: var(--orange-dark);
}

.newsletter-message {
  min-height: 22px;
  margin-top: 9px !important;
  font-size: 0.78rem;
  font-weight: 700;
}

.newsletter-message.error {
  color: #ffb8b8;
}

.newsletter-message.success {
  color: #9ff0c4;
}

/* =========================================================
   Footer
========================================================= */

.site-footer {
  padding: 70px 0 24px;
  color: #c1ccdb;
  background: #051d3c;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
}

.footer-brand {
  color: var(--white);
}

.footer-brand-column > p {
  max-width: 420px;
  margin: 20px 0;
  color: #9caabe;
  font-size: 0.86rem;
}

.social-links {
  display: flex;
  gap: 10px;
}

.social-links a {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  transition:
    color var(--transition),
    transform var(--transition),
    background-color var(--transition),
    border-color var(--transition);
}

.social-links a:hover {
  transform: translateY(-3px);
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

.footer-links-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-links-column h3 {
  margin: 0 0 8px;
  color: var(--white);
  font-size: 0.95rem;
}

.footer-links-column a {
  color: #9caabe;
  font-size: 0.82rem;
  transition:
    color var(--transition),
    transform var(--transition);
}

.footer-links-column a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 50px;
  padding-top: 22px;
  color: #76869d;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
}

.footer-bottom p {
  margin: 0;
}

/* =========================================================
   Volver arriba y animaciones
========================================================= */

.back-to-top {
  position: fixed;
  z-index: 900;
  right: 18px;
  bottom: 18px;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--white);
  border-radius: 14px;
  background: var(--primary);
  box-shadow: 0 12px 28px rgba(0, 87, 217, 0.3);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition:
    opacity var(--transition),
    visibility var(--transition),
    transform var(--transition),
    background-color var(--transition);
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Tablet
========================================================= */

@media (min-width: 640px) {
  .container {
    width: min(calc(100% - 48px), var(--container-width));
  }

  .section-padding {
    padding: 96px 0;
  }

  .login-button {
    display: flex;
  }

  .hero {
    min-height: 780px;
  }

  .flight-search-card {
    padding: 28px;
  }

  .search-card-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .trip-type-selector {
    width: auto;
    min-width: 310px;
  }

  .route-fields {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: start;
  }

  .swap-button {
    align-self: center;
    margin: 22px -8px 0;
  }

  .flight-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-fields {
    grid-column: 1 / -1;
  }

  .search-submit-button {
    margin-bottom: 23px;
  }

  .offers-grid,
  .benefits-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .destinations-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .destination-large,
  .destination-wide {
    grid-column: 1 / -1;
  }

  .section-link {
    display: inline-flex;
  }

  .promotion-content {
    padding: 60px;
  }

  .newsletter-content {
    flex-direction: row;
  }

  .newsletter-card {
    padding: 36px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand-column {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* =========================================================
   Computador
========================================================= */

@media (min-width: 900px) {
  .desktop-nav {
    display: flex;
  }

  .menu-button,
  .mobile-menu {
    display: none;
  }

  .hero {
    min-height: 820px;
    padding-bottom: 190px;
  }

  .flight-form-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .route-fields {
    grid-column: span 6;
  }

  .flight-form-grid > .form-field {
    grid-column: span 3;
  }

  .flight-form-grid > .form-field:nth-of-type(3),
  .flight-form-grid > .form-field:nth-of-type(4) {
    grid-column: span 3;
  }

  .search-submit-button {
    grid-column: span 3;
  }

  .flight-result-card {
    grid-template-columns: 1.25fr 2fr 1.15fr auto;
    align-items: center;
  }

  .flight-price {
    min-width: 170px;
    align-items: flex-end;
    text-align: right;
  }

  .select-flight-button {
    width: auto;
    min-width: 125px;
    margin-top: 0;
    padding: 0 18px;
  }

  .offers-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .destinations-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-rows: 230px;
  }

  .destination-card,
  .destination-card img {
    min-height: 0;
    height: 100%;
  }

  .destination-large {
    grid-row: span 2;
    grid-column: span 2;
  }

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

  .benefits-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .faq-container {
    grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.4fr);
    align-items: start;
    gap: 70px;
  }

  .faq-intro {
    position: sticky;
    top: calc(var(--header-height) + 30px);
  }

  .newsletter-card {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    padding: 46px;
  }

  .footer-grid {
    grid-template-columns: 1.6fr repeat(3, 1fr);
  }

  .footer-brand-column {
    grid-column: auto;
  }
}

@media (min-width: 1120px) {
  .flight-search-card {
    padding: 32px;
  }

  .flight-form-grid {
    grid-template-columns: repeat(15, minmax(0, 1fr));
    align-items: start;
  }

  .route-fields {
    grid-column: span 6;
  }

  .flight-form-grid > .form-field {
    grid-column: span 2;
  }

  .search-submit-button {
    grid-column: span 3;
  }

  .offers-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .offer-image {
    height: 200px;
  }
}

/* =========================================================
   Dispositivos pequeños
========================================================= */

@media (max-width: 399px) {
  .container {
    width: min(calc(100% - 24px), var(--container-width));
  }

  .login-button {
    display: none;
  }

  .hero {
    min-height: 760px;
    padding-top: 130px;
  }

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

  .hero-button,
  .secondary-hero-button {
    width: 100%;
  }

  .hero-features {
    flex-direction: column;
    gap: 10px;
  }

  .search-section {
    margin-top: -112px;
  }

  .flight-search-card {
    padding: 18px;
    border-radius: 20px;
  }

  .trip-type-selector {
    flex-direction: column;
  }

  .offer-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .outline-button {
    width: 100%;
  }

  .section-heading {
    display: block;
  }

  .filter-button {
    width: 100%;
    margin-top: 20px;
  }

  .flight-route-details {
    gap: 7px;
  }

  .flight-line {
    width: 45px;
  }
}

/* Respeta la preferencia del usuario de reducir animaciones */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}