/* =========================
   RESET / BASE
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

section[id] {
  scroll-margin-top: 100px;
}

:root {
  --color-primary: #1e8a7a;
  --color-primary-dark: #14695d;
  --color-secondary: #f4fbf9;
  --color-accent: #dff4ee;
  --color-text: #1f2a2e;
  --color-text-light: #5b6b70;
  --color-white: #ffffff;
  --color-border: #d9e7e3;
  --color-bg: #fcfefe;
  --color-dark: #102224;
  --shadow-soft: 0 10px 30px rgba(16, 34, 36, 0.08);
  --shadow-card: 0 8px 24px rgba(16, 34, 36, 0.06);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container-width: 1200px;
  --transition: all 0.3s ease;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

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

img {
  border-radius: var(--radius-md);
}

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

ul {
  list-style: none;
}

button,
input,
textarea {
  font: inherit;
}

/* =========================
   UTILIDADES
========================= */
.container {
  width: min(90%, var(--container-width));
  margin: 0 auto;
}

.section {
  padding: 55px 0;
}

.section-label {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 38px;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-dark);
}

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

.cards-grid {
  display: grid;
  gap: 24px;
}

/* =========================
   BOTONES
========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: 0.3s;
  border: 1px solid transparent;
  cursor: pointer;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
}

.text-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--color-primary);
  font-weight: 700;
  transition: var(--transition);
}

.text-link:hover {
  color: var(--color-primary-dark);
}

/* =========================
   HEADER
========================= */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(217, 231, 227, 0.8);
}

.header-container {
  min-height: 82px;
  display: grid;
  grid-template-columns: 150px 1fr auto;
  align-items: center;
  gap: 14px;
}

.logo {
  display: flex;
  align-items: center;
  width: 150px;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav {
  min-width: 0;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #243336;
  letter-spacing: 0.1px;
  transition: all 0.25s ease;
  position: relative;
}

.nav-list a:hover {
  color: var(--color-primary);
  background: rgba(30, 138, 122, 0.08);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 5px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-list a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-cta,
.header-cta-secondary {
  white-space: nowrap;
  padding: 10px 18px;
}

/* =========================
   HERO
========================= */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  display: flex;
  align-items: center;
  padding: 120px 0;
  background: transparent;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.32);
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
}

.hero-text {
  max-width: 700px;
}

.tagline {
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 1.05;
  color: #0a1b1d;
  margin-bottom: 22px;
  font-weight: 900;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.hero-description {
  font-size: 1.15rem;
  color: #0f1f22;
  font-weight: 500;
  max-width: 620px;
  margin-bottom: 30px;
}

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

/* =========================
   ABOUT
========================= */
.about-container {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 50px;
}

.about-image img {
  width: 100%;
  min-height: 420px;
  object-fit: cover;
  box-shadow: var(--shadow-soft);
}

.about-text h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--color-dark);
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

/* =========================
   ESPECIALISTA
========================= */
.expert {
  background: linear-gradient(180deg, #ffffff 0%, #f7fbfa 100%);
}

.expert-container {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 50px;
  align-items: center;
}

.expert-image img {
  width: 100%;
  border-radius: 22px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.expert-content h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 10px;
  color: var(--color-dark);
}

.expert-role {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 18px;
}

.expert-content p {
  color: var(--color-text-light);
  margin-bottom: 14px;
}

.expert-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 18px;
}

.expert-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow-card);
}

.expert-item strong {
  display: block;
  margin-bottom: 8px;
}

.expert-item ul {
  padding-left: 18px;
  list-style: disc;
}

.expert-item li {
  margin-bottom: 6px;
}

/* =========================
   BENEFICIOS
========================= */
.benefits-grid {
  grid-template-columns: repeat(4, 1fr);
}

/* =========================
   CARDS GENERALES
========================= */
.card {
  background-color: var(--color-white);
  padding: 30px 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

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

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.card p {
  color: var(--color-text-light);
}

/* =========================
   PROCESS
========================= */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.process-step {
  background-color: var(--color-white);
  padding: 34px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.step-number {
  display: inline-flex;
  width: 52px;
  height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 18px;
}

.process-step h3 {
  margin-bottom: 10px;
  color: var(--color-dark);
}

.process-step p {
  color: var(--color-text-light);
}

/* =========================
   ESTUDIOS
========================= */
.studies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.study-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.study-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 34px rgba(16, 34, 36, 0.10);
}

.study-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 0;
}

.study-card-content {
  padding: 24px;
}

.study-card-content h3 {
  font-size: 1.45rem;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.study-card-content p {
  color: var(--color-text-light);
  margin-bottom: 18px;
}

.study-features {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.study-features li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text);
}

.study-features li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* =========================
   CTA
========================= */
.cta-box {
  background: linear-gradient(135deg, var(--color-primary), #2aa08e);
  color: var(--color-white);
  padding: 42px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  box-shadow: var(--shadow-soft);
}

.cta-box .section-label,
.cta-box h2,
.cta-box p {
  color: var(--color-white);
}

.cta-box h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: 12px;
}

.cta-box p {
  max-width: 700px;
}

.cta-box .btn-primary {
  background-color: var(--color-white);
  color: var(--color-primary);
  white-space: nowrap;
}

.cta-box .btn-primary:hover {
  background-color: #f1fdf9;
}

/* =========================
   PAQUETES
========================= */
.packages {
  background: linear-gradient(180deg, #f8fcfb 0%, #ffffff 100%);
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.package-card {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 22px;
  padding: 32px 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.package-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 34px rgba(16, 34, 36, 0.10);
}

.package-top {
  margin-bottom: 24px;
}

.package-top h3 {
  font-size: 1.6rem;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.package-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.package-note {
  display: inline-block;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.package-features {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.package-features li {
  position: relative;
  padding-left: 22px;
  color: var(--color-text);
  line-height: 1.5;
}

.package-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.package-card .btn {
  width: 100%;
}

.package-featured {
  border: 2px solid var(--color-primary);
  box-shadow: 0 20px 40px rgba(30, 138, 122, 0.14);
  transform: translateY(-8px);
}

.package-featured:hover {
  transform: translateY(-12px);
}

.package-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(30, 138, 122, 0.18);
}

/* =========================
   FAQ
========================= */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-card);
}

.faq-item h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--color-dark);
}

.faq-item p {
  color: var(--color-text-light);
}

/* =========================
   CALENDARIO
========================= */
.calendar {
  background: linear-gradient(180deg, #f8fcfb 0%, #ffffff 100%);
}

.calendar-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  padding: 20px;
  overflow: hidden;
}

/* =========================
   CONTACTO
========================= */
.contact-container {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 34px;
  align-items: start;
}

.contact-info h2 {
  font-size: clamp(2rem, 4vw, 2.7rem);
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.contact-list {
  display: grid;
  gap: 12px;
}

.contact-list li {
  color: var(--color-text);
}

.contact-form {
  background-color: var(--color-white);
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background-color: #fbfefd;
  color: var(--color-text);
  transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 138, 122, 0.12);
}

/* =========================
   FOOTER
========================= */
.footer {
  background-color: var(--color-dark);
  color: rgba(255, 255, 255, 0.85);
  padding-top: 70px;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 30px;
  padding-bottom: 40px;
}

.footer h3,
.footer h4 {
  color: var(--color-white);
  margin-bottom: 14px;
}

.footer p,
.footer li,
.footer a {
  color: rgba(255, 255, 255, 0.78);
}

.footer ul {
  display: grid;
  gap: 10px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  padding: 18px 0;
  font-size: 0.95rem;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 1100px) {
  .header-container {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 14px;
    padding: 14px 0;
  }

  .nav {
    width: 100%;
  }

  .nav-list {
    justify-content: center;
    flex-wrap: wrap;
    white-space: normal;
    gap: 12px 18px;
  }

  .header-actions {
    justify-content: center;
    flex-wrap: wrap;
  }

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

  .about-container,
  .contact-container,
  .footer-container,
  .expert-container {
    grid-template-columns: 1fr;
  }

  .expert-image {
    max-width: 420px;
    margin: auto;
  }

  .expert-highlights {
    grid-template-columns: 1fr;
  }

  .cta-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    min-height: 680px;
    padding: 100px 0;
  }
}

@media (max-width: 820px) {
  .section {
    padding: 55px 0;
  }

  .header-actions {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .header-cta,
  .header-cta-secondary {
    display: inline-flex;
  }

  .benefits-grid,
  .process-grid,
  .studies-grid,
  .packages-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 620px;
    padding: 90px 0;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-box {
    padding: 32px 24px;
  }

  .contact-form {
    padding: 24px;
  }

  .study-card img {
    height: 210px;
  }

  .package-featured {
    transform: none;
  }

  .package-featured:hover {
    transform: translateY(-6px);
  }

  .calendar-card {
    padding: 12px;
    border-radius: 18px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(92%, var(--container-width));
  }

  .logo img {
    height: 48px;
  }

  .header-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .header-cta,
  .header-cta-secondary,
  .btn {
    width: 100%;
  }

  .card,
  .process-step,
  .faq-item,
  .package-card,
  .study-card-content {
    padding: 22px 18px;
  }

  .footer {
    padding-top: 55px;
  }

  .hero {
    min-height: 560px;
    padding: 80px 0;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .study-card img {
    height: 190px;
  }

  .calendar-card {
    padding: 8px;
  }
}