/* =============================================
   Climatización Martez — Styles
   ============================================= */

:root {
  --color-primary: #0c6e9e;
  --color-primary-dark: #084a6b;
  --color-primary-light: #e8f4fa;
  --color-accent: #14b8a6;
  --color-accent-dark: #0d9488;
  --color-dark: #0f172a;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --color-success: #059669;
  --color-error: #dc2626;
  --color-whatsapp: #25d366;

  --font-display: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --header-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::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-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

/* ---- Typography ---- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-dark);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1 em {
  font-style: normal;
  color: var(--color-primary);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}

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

/* ---- Header ---- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

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

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-dark);
}

.logo__icon {
  font-size: 1.75rem;
  line-height: 1;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo__text strong {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.logo__text span {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 1rem;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition);
}

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

.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  margin-left: 0.5rem;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-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;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(12, 110, 158, 0.92) 0%, rgba(15, 23, 42, 0.88) 100%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: -1;
}

.hero__content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  padding-block: 4rem;
}

.hero__text {
  color: #fff;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero__text h1 {
  color: #fff;
  margin-bottom: 1.25rem;
}

.hero__text > p {
  font-size: 1.125rem;
  opacity: 0.92;
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.9rem;
  opacity: 0.85;
}

.hero__trust li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.hero__card {
  animation-delay: 0.2s;
}

.hero__card-inner {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.hero__card-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.hero__card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.hero__card-text {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

/* ---- Sections ---- */

.section {
  padding: 5rem 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section__header h2 {
  margin-bottom: 1rem;
}

.section__header p {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

/* ---- Services ---- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  margin-bottom: 0.75rem;
}

.service-card > p {
  color: var(--color-text-light);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.service-card__list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ---- Tips ---- */

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.tip-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.section:not(.section--alt) .tip-card {
  background: var(--color-bg);
}

.tip-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.tip-card__step {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 1rem;
}

.tip-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.tip-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.tips-cta {
  text-align: center;
  padding: 2.5rem;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #fff 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.tips-cta p {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 1.25rem;
}

/* ---- About ---- */

.about {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.about__lead {
  font-size: 1.125rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.about__content p {
  margin-bottom: 1rem;
  color: var(--color-text-light);
}

.about__values {
  margin-top: 2rem;
  display: grid;
  gap: 1.25rem;
}

.about__values li {
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent);
}

.about__values strong {
  display: block;
  color: var(--color-dark);
  font-family: var(--font-display);
  margin-bottom: 0.25rem;
}

.about__values span {
  font-size: 0.925rem;
  color: var(--color-text-light);
}

.about__photo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1rem;
}

.about__photo {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
}

.about__photo--1 {
  grid-row: span 2;
  aspect-ratio: auto;
  min-height: 280px;
}

.about__photo--2 {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
}

.about__photo--3 {
  background: linear-gradient(135deg, #475569 0%, var(--color-dark) 100%);
}

.about__photo-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
  text-align: center;
}

/* ---- Coverage ---- */

.coverage {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.coverage__zone h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.coverage__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.coverage__list li {
  padding: 0.4rem 0.85rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.section:not(.section--alt) .coverage__list li {
  background: var(--color-bg-alt);
}

.coverage__list li:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.coverage__note {
  text-align: center;
  margin-top: 2.5rem;
  color: var(--color-text-light);
}

/* ---- Testimonials ---- */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testimonial {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary-light);
}

.testimonial p {
  font-size: 0.975rem;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.testimonial footer {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.testimonial cite {
  font-style: normal;
  font-weight: 600;
  color: var(--color-dark);
  font-family: var(--font-display);
}

.testimonial span {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ---- Contact ---- */

.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.contact-form {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.section:not(.section--alt) .contact-form {
  background: var(--color-bg);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-dark);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(12, 110, 158, 0.15);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 0.35rem;
  min-height: 1.2em;
}

.form-success {
  margin-top: 1rem;
  padding: 1rem;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: var(--radius);
  color: var(--color-success);
  font-size: 0.925rem;
  text-align: center;
}

.contact-info__item {
  padding: 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.section:not(.section--alt) .contact-info__item {
  background: var(--color-bg);
}

.contact-info__item h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.contact-info__item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.contact-info__link {
  font-weight: 600;
  word-break: break-all;
}

/* ---- Footer ---- */

.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 2.5rem 0;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: #fff;
}

.footer__copy {
  font-size: 0.875rem;
}

.footer__nav {
  display: flex;
  gap: 1.5rem;
}

.footer__nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

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

/* ---- WhatsApp Float ---- */

.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-whatsapp);
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  transition: all var(--transition);
  animation: pulse-whatsapp 2.5s infinite;
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  color: #fff;
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.55);
}

@keyframes pulse-whatsapp {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.7); }
}

/* ---- Animations ---- */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-up[data-delay="100"] { transition-delay: 0.1s; }
.fade-up[data-delay="150"] { transition-delay: 0.15s; }
.fade-up[data-delay="200"] { transition-delay: 0.2s; }

/* ---- Responsive ---- */

@media (max-width: 992px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__text > p {
    margin-inline: auto;
  }

  .hero__actions,
  .hero__trust {
    justify-content: center;
  }

  .services-grid,
  .tips-grid,
  .coverage,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
  }

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

  .nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav__link {
    display: block;
    padding: 0.85rem 1rem;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

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

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

  .whatsapp-float {
    bottom: 1rem;
    right: 1rem;
    width: 54px;
    height: 54px;
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}

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

  .fade-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .whatsapp-float {
    animation: none;
  }
}