/* ===================================
   Design System — Clases de Microeconomía
   =================================== */

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

:root {
  /* Palette */
  --cream:       #F8F5F0;
  --cream-dark:  #F0EBE3;
  --brown-dark:  #4B2E2B;
  --brown-mid:   #A67C52;
  --brown-light: #C9A87C;
  --white:       #FFFFFF;

  /* Typography */
  --font: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing scale */
  --sp-xs:  0.5rem;
  --sp-sm:  1rem;
  --sp-md:  1.5rem;
  --sp-lg:  2.5rem;
  --sp-xl:  4rem;
  --sp-2xl: 6rem;

  /* Sizing */
  --max-w: 960px;
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--cream);
  color: var(--brown-dark);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Utility ---------- */
.container {
  width: 90%;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section {
  padding: var(--sp-2xl) 0;
}

.section--alt {
  background: var(--cream-dark);
}

.text-center {
  text-align: center;
}

/* ---------- Typography ---------- */
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 600;
  margin-bottom: var(--sp-md);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--sp-xs);
}

p,
li {
  font-size: 1.05rem;
  color: #6B5350;
}

.subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: #7A5C58;
  font-weight: 400;
  margin-top: var(--sp-sm);
  line-height: 1.6;
}

.section-subtitle {
  color: #7A5C58;
  max-width: 540px;
  margin: 0 auto var(--sp-lg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 2.2rem;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn--primary:hover {
  background: #3A201E;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(75, 46, 43, 0.25);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--large {
  padding: 1.1rem 2.8rem;
  font-size: 1.125rem;
}

.btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ---------- HERO ---------- */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: var(--sp-xl) 0;
  position: relative;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
  align-items: center;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__tag {
  display: inline-block;
  background: var(--cream-dark);
  color: var(--brown-mid);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  margin-bottom: var(--sp-md);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__cta {
  margin-top: var(--sp-lg);
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero__image img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius);
  opacity: 0.85;
}

/* ---------- SOBRE MÍ ---------- */
.about__card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-lg);
  align-items: start;
  max-width: 700px;
  margin: 0 auto;
}

.about__icon {
  width: 72px;
  height: 72px;
  background: var(--cream);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--brown-mid);
}

.about__stats {
  display: flex;
  gap: var(--sp-md);
  margin-top: var(--sp-md);
  flex-wrap: wrap;
}

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

.stat__value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--brown-dark);
}

.stat__label {
  font-size: 0.85rem;
  color: var(--brown-mid);
}

/* ---------- SERVICIO ---------- */
.service__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  margin-top: var(--sp-lg);
}

.service__block {
  background: var(--cream);
  border-radius: var(--radius);
  padding: var(--sp-lg);
}

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

.service__block h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service__block h3 svg {
  width: 22px;
  height: 22px;
  stroke: var(--brown-mid);
  flex-shrink: 0;
}

.service__block ul {
  list-style: none;
  margin-top: var(--sp-sm);
}

.service__block li {
  padding: 0.35rem 0;
  padding-left: 1.4rem;
  position: relative;
  font-size: 1rem;
}

.service__block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brown-light);
}

/* ---------- BENEFICIOS ---------- */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}

.benefit {
  background: var(--cream-dark);
  border-radius: var(--radius);
  padding: var(--sp-md) var(--sp-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(75, 46, 43, 0.08);
}

.benefit__icon {
  width: 48px;
  height: 48px;
  background: var(--cream);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-sm);
}

.benefit__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--brown-mid);
}

.benefit h3 {
  font-size: 1rem;
  color: var(--brown-dark);
}

.benefit p {
  font-size: 0.925rem;
  margin-top: 0.3rem;
}

/* ---------- CTA FINAL ---------- */
.cta-final {
  background: var(--brown-dark);
  color: var(--cream);
  text-align: center;
  padding: var(--sp-2xl) 0;
}

.cta-final h2 {
  color: var(--cream);
}

.cta-final .subtitle {
  color: rgba(248, 245, 240, 0.7);
}

.cta-final .btn--primary {
  background: var(--brown-mid);
  color: var(--white);
  margin-top: var(--sp-lg);
}

.cta-final .btn--primary:hover {
  background: var(--brown-light);
  color: var(--brown-dark);
}

.cta-final__phone {
  margin-top: var(--sp-md);
  font-size: 1.1rem;
  color: rgba(248, 245, 240, 0.6);
  letter-spacing: 0.04em;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: var(--sp-md) 0;
  background: #3A201E;
  color: rgba(248, 245, 240, 0.4);
  font-size: 0.85rem;
}

/* ---------- Divider ---------- */
.divider {
  width: 48px;
  height: 3px;
  background: var(--brown-light);
  border-radius: 2px;
  margin: 0 auto var(--sp-md);
}

/* ---------- Scroll Animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---------- RESPONSIVE ---------- */

/* Tablet */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: var(--sp-xl) 0 var(--sp-lg);
  }

  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-lg);
  }

  .hero__image {
    order: -1;
  }

  .hero__image img {
    max-width: 280px;
  }

  .hero__tag {
    margin-bottom: var(--sp-sm);
  }

  .about__card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about__icon {
    margin: 0 auto;
  }

  .about__stats {
    justify-content: center;
  }

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

/* Mobile */
@media (max-width: 480px) {
  :root {
    --sp-2xl: 3.5rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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