/* ============================================================
   FríoPro — Servicios de Refrigeración | styles.css
   ============================================================ */

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

:root {
  --blue-950: #020917;
  --blue-900: #05132b;
  --blue-800: #0a2147;
  --blue-700: #0d3166;
  --blue-600: #1045a0;
  --blue-500: #1a5fc8;
  --blue-400: #3b82f6;
  --blue-300: #7bb3fa;
  --blue-200: #bfdbfe;
  --blue-100: #dbeafe;
  --cyan:     #00d4ff;
  --cyan-dim: rgba(0,212,255,0.15);
  --white:    #ffffff;
  --gray-100: #f0f6ff;
  --gray-400: #94a3b8;
  --gray-600: #64748b;
  --green:    #22c55e;
  --whatsapp: #25d366;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 24px;
  --shadow:    0 4px 24px rgba(2,9,23,0.35);
  --shadow-lg: 0 12px 48px rgba(2,9,23,0.5);
  --transition: all 0.28s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--blue-950);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--blue-500);
  color: var(--white);
  box-shadow: 0 0 0 0 rgba(59,130,246,0.4);
}
.btn--primary:hover {
  background: var(--blue-400);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.4);
}
.btn--ghost {
  background: transparent;
  color: var(--blue-200);
  border: 1.5px solid rgba(59,130,246,0.35);
}
.btn--ghost:hover {
  background: rgba(59,130,246,0.1);
  border-color: var(--blue-400);
  color: var(--white);
}
.btn--sm { padding: 10px 20px; font-size: 0.88rem; }
.btn--full { width: 100%; justify-content: center; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(2,9,23,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(59,130,246,0.15);
}
.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
  flex-shrink: 0;
}
.nav__logo-icon {
  font-size: 1.3rem;
  filter: drop-shadow(0 0 6px var(--cyan));
}
.nav__links {
  display: flex;
  gap: 32px;
  margin-left: auto;
}
.nav__links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--blue-200);
  transition: var(--transition);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--cyan);
  transition: width 0.25s;
}
.nav__links a:hover { color: var(--white); }
.nav__links a:hover::after { width: 100%; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav__burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: none;
  flex-direction: column;
  background: rgba(5,19,43,0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(59,130,246,0.15);
  padding: 16px 24px 24px;
  gap: 4px;
}
.nav__mobile.open { display: flex; }
.nav__mobile-link {
  padding: 12px 0;
  font-size: 1.05rem;
  color: var(--blue-200);
  border-bottom: 1px solid rgba(59,130,246,0.1);
}
.nav__mobile-link:last-of-type { border-bottom: none; }
.nav__mobile-cta {
  margin-top: 12px;
  padding: 14px;
  background: var(--blue-500);
  color: var(--white);
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 600;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  gap: 60px;
}
.hero__bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero__glow--1 {
  width: 600px; height: 400px;
  background: radial-gradient(circle, rgba(26,95,200,0.35) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.hero__glow--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
  bottom: 0; right: 10%;
}

.hero__content {
  flex: 1;
  max-width: 620px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.25);
  color: var(--cyan);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero__badge-dot {
  width: 7px; height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  color: var(--white);
}
.hero__title-accent {
  color: var(--cyan);
  text-shadow: 0 0 40px rgba(0,212,255,0.4);
}
.hero__subtitle {
  font-size: 1.1rem;
  color: var(--blue-300);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 500px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero__stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.hero__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.hero__stat span {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero__stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(59,130,246,0.3);
}

.hero__visual {
  flex-shrink: 0;
  width: 320px;
  position: relative;
  height: 320px;
}
.hero__card {
  background: rgba(10,33,71,0.85);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  padding: 20px;
  position: absolute;
  animation: float 6s ease-in-out infinite;
  box-shadow: var(--shadow);
}
.hero__card--main {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  top: 50%;
  transform: translateY(-50%);
}
.hero__card--small {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--blue-200);
  right: -20px;
}
.hero__card--top { top: 20px; animation-delay: -2s; }
.hero__card--bottom { bottom: 20px; animation-delay: -4s; }
.hero__card-emoji { font-size: 1.2rem; }
.hero__card-icon { font-size: 2rem; }
.hero__card-text { flex: 1; }
.hero__card-text strong { display: block; font-size: 0.95rem; color: var(--white); }
.hero__card-text span { font-size: 0.78rem; color: var(--gray-400); }
.hero__card-status { display: flex; align-items: center; gap: 6px; color: var(--cyan); font-weight: 700; font-size: 1.1rem; }
.hero__card-dot { width: 8px; height: 8px; background: var(--green); border-radius: 50%; box-shadow: 0 0 6px var(--green); animation: pulse 2s infinite; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero__card--main {
  animation: floatMid 6s ease-in-out infinite;
}
@keyframes floatMid {
  0%, 100% { top: 50%; transform: translateY(-50%); }
  50% { top: calc(50% - 8px); transform: translateY(-50%); }
}

/* ============================================================
   SECTION COMMONS
   ============================================================ */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header--light { }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--cyan-dim);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-tag--light { color: var(--cyan); background: rgba(0,212,255,0.1); }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 16px;
}
.section-title--light { color: var(--white); }
.section-desc { color: var(--blue-300); max-width: 520px; margin: 0 auto; font-size: 1rem; }
.section-desc--light { color: var(--blue-200); }

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  padding: 100px 0;
  background: rgba(5,19,43,0.5);
  position: relative;
}
.services::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.4), transparent);
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.service-card {
  background: rgba(10,33,71,0.6);
  border: 1px solid rgba(59,130,246,0.15);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--cyan));
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  border-color: rgba(59,130,246,0.4);
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(59,130,246,0.15);
  background: rgba(10,33,71,0.9);
}
.service-card:hover::before { opacity: 1; }

.service-card--featured {
  background: linear-gradient(135deg, rgba(16,69,160,0.5), rgba(10,33,71,0.7));
  border-color: rgba(59,130,246,0.35);
}
.service-card--featured::before { opacity: 1; }

.service-card__badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--cyan);
  color: var(--blue-900);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
}
.service-card__icon-wrap {
  width: 56px; height: 56px;
  background: rgba(59,130,246,0.12);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  border: 1px solid rgba(59,130,246,0.2);
}
.service-card__icon { font-size: 1.6rem; }
.service-card__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.2;
}
.service-card__desc {
  color: var(--blue-300);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 18px;
}
.service-card__list {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-card__list li {
  font-size: 0.85rem;
  color: var(--blue-200);
  padding-left: 18px;
  position: relative;
}
.service-card__list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-size: 0.8rem;
}
.service-card__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--blue-400);
  transition: var(--transition);
}
.service-card__link:hover { color: var(--cyan); letter-spacing: 0.02em; }

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  padding: 100px 0;
  position: relative;
}
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about__visual {
  position: relative;
  min-height: 420px;
}
.about__shape {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16,69,160,0.2), rgba(0,212,255,0.05));
  border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%;
  border: 1px solid rgba(59,130,246,0.15);
  animation: morph 10s ease-in-out infinite;
}
@keyframes morph {
  0%, 100% { border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%; }
  33% { border-radius: 60% 40% 50% 50% / 60% 40% 60% 40%; }
  66% { border-radius: 50% 50% 40% 60% / 50% 60% 40% 50%; }
}
.about__numbers {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  padding: 40px;
}
.about__number-card {
  background: rgba(10,33,71,0.85);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius);
  padding: 20px 24px;
  backdrop-filter: blur(12px);
}
.about__number-card--offset { margin-left: 40px; }
.about__number-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--cyan);
  line-height: 1;
}
.about__number-card span {
  font-size: 0.85rem;
  color: var(--blue-300);
}

.about__content { }
.about__content .section-tag { display: inline-block; margin-bottom: 16px; }
.about__content .section-title { text-align: left; margin-bottom: 20px; }
.about__text {
  color: var(--blue-300);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 16px;
}
.about__features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 28px 0 36px;
}
.about__feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--blue-200);
}
.about__feature-icon {
  width: 24px; height: 24px;
  background: rgba(0,212,255,0.15);
  color: var(--cyan);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  padding: 100px 0;
  background: rgba(5,19,43,0.7);
  position: relative;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.4), transparent);
}
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}
.contact__info { display: flex; flex-direction: column; gap: 16px; }
.contact__info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(10,33,71,0.6);
  border: 1px solid rgba(59,130,246,0.15);
  border-radius: var(--radius);
  padding: 20px;
}
.contact__info-icon { font-size: 1.4rem; flex-shrink: 0; }
.contact__info-card > div { display: flex; flex-direction: column; gap: 4px; }
.contact__info-card strong { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray-400); }
.contact__info-card a,
.contact__info-card span {
  color: var(--blue-200);
  font-size: 0.95rem;
  line-height: 1.5;
}
.contact__info-card a:hover { color: var(--cyan); }

.whatsapp-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--whatsapp);
  color: var(--white);
  padding: 16px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  margin-top: 8px;
}
.whatsapp-btn:hover {
  background: #1db954;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,0.35);
}

/* FORM */
.contact__form {
  background: rgba(10,33,71,0.6);
  border: 1px solid rgba(59,130,246,0.15);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue-200);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(5,19,43,0.7);
  border: 1.5px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 13px 16px;
  transition: var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-600); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-400);
  background: rgba(10,33,71,0.8);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
.form-group input.error,
.form-group textarea.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}
.form-success {
  display: none;
  margin-top: 16px;
  padding: 14px 18px;
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius-sm);
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 500;
}
.form-success.visible { display: block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--blue-900);
  border-top: 1px solid rgba(59,130,246,0.12);
  padding: 60px 0 0;
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(59,130,246,0.1);
}
.footer__brand p {
  color: var(--blue-300);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-top: 16px;
  max-width: 280px;
}
.footer__links,
.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__links strong,
.footer__contact strong {
  color: var(--white);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.footer__links a,
.footer__contact a {
  color: var(--blue-300);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer__links a:hover,
.footer__contact a:hover { color: var(--white); }
.footer__whatsapp { color: var(--whatsapp) !important; font-weight: 600; }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  color: var(--gray-600);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================================
   FAB WHATSAPP
   ============================================================ */
.fab-whatsapp {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 58px; height: 58px;
  background: var(--whatsapp);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37,211,102,0.45);
  z-index: 900;
  transition: var(--transition);
}
.fab-whatsapp:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 12px 32px rgba(37,211,102,0.55);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 100px;
    gap: 48px;
  }
  .hero__actions { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__subtitle { margin: 0 auto 36px; }
  .hero__visual { width: 280px; height: 280px; margin: 0 auto; }
  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .about__visual { min-height: 320px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav__links, .nav > .btn--primary { display: none; }
  .nav__burger { display: flex; }
  .services__grid { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; gap: 40px; }
  .contact__form { padding: 28px 20px; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .hero__card--small { display: none; }
  .about__content .section-title { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2.8rem; }
  .btn { padding: 12px 22px; }
  .service-card { padding: 28px 22px; }
  .footer__bottom { flex-direction: column; text-align: center; }
}