:root {
  --ink: #0c1210;
  --forest: #123528;
  --leaf: #1f6b4a;
  --cream: #f3f6f2;
  --white: #ffffff;
  --muted: rgba(12, 18, 16, 0.68);
  --display: "Syne", "Avenir Next", system-ui, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.55;
}

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

a {
  color: inherit;
}

/* Header claro, legible, sin mix-blend raro */
.top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem clamp(1.2rem, 4vw, 3rem);
  color: var(--white);
}

.top__mark {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  letter-spacing: -0.02em;
  text-decoration: none;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
}

.top nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.top nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

.top__cta {
  padding: 0.5rem 0.95rem;
  background: var(--white);
  color: var(--forest) !important;
  border-radius: 2px;
}

.top__cta:hover {
  background: #e8f5ee;
}

/* HERO a sangre: foto real + texto blanco con sombra */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  transform: scale(1.08);
  animation: ken 26s ease-in-out infinite alternate;
  filter: saturate(1.08) contrast(1.05);
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      105deg,
      rgba(6, 16, 12, 0.82) 0%,
      rgba(6, 16, 12, 0.55) 42%,
      rgba(6, 16, 12, 0.28) 68%,
      rgba(6, 16, 12, 0.45) 100%
    ),
    linear-gradient(180deg, rgba(6, 16, 12, 0.2) 0%, rgba(6, 16, 12, 0.75) 100%);
}

.hero__grid {
  position: relative;
  z-index: 2;
  padding: clamp(6.5rem, 12vh, 8rem) clamp(1.25rem, 5vw, 3.5rem) clamp(3.5rem, 8vh, 5rem);
  max-width: 920px;
}

.hero__brand {
  margin: 0 0 0.85rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.6rem, 7.5vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: #ffffff;
  text-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
  max-width: 12ch;
  animation: up 0.9s var(--ease) both;
}

.hero__title {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: #f2faf5;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  max-width: 18ch;
  animation: up 0.9s var(--ease) 0.12s both;
}

.hero__lead {
  margin: 0 0 1.6rem;
  max-width: 34rem;
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  color: rgba(242, 250, 245, 0.9);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
  animation: up 0.9s var(--ease) 0.22s both;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: up 0.9s var(--ease) 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.3rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 2px;
  transition: transform 0.2s var(--ease), background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--light {
  background: #ffffff;
  color: var(--forest);
}

.btn--light:hover {
  background: #e9f6ef;
}

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.65);
  color: #ffffff;
  background: rgba(0, 0, 0, 0.18);
}

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

/* Caso */
.case {
  display: grid;
  background: var(--ink);
  color: var(--cream);
}

@media (min-width: 900px) {
  .case {
    grid-template-columns: 1fr 1.15fr;
    min-height: 70vh;
  }
}

.case__text {
  padding: clamp(2.8rem, 7vw, 5rem) clamp(1.25rem, 4vw, 3.2rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case__label {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7dcea0;
}

.case__name {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #ffffff;
}

.case__body {
  margin: 0 0 1.6rem;
  max-width: 32rem;
  color: rgba(243, 246, 242, 0.8);
  font-size: 1.08rem;
}

.case__btn {
  align-self: flex-start;
  font-family: var(--display);
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  border-bottom: 2px solid #7dcea0;
  padding-bottom: 0.15rem;
}

.case__btn:hover {
  color: #b8efcf;
  border-color: #b8efcf;
}

.case__shot {
  display: block;
  min-height: 48vh;
  overflow: hidden;
  background: #163528;
}

.case__shot img {
  width: 100%;
  height: 100%;
  min-height: 48vh;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}

.case__shot:hover img {
  transform: scale(1.06);
}

.case__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
}

.case__tags li {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(125, 211, 252, 0.45);
  color: #bae6fd;
  border-radius: 2px;
}

/* Salud Visual */
.case--vision {
  background: #07101c;
  color: #e2e8f0;
}

.case--vision .case__label {
  color: #38bdf8;
}

.case--vision .case__name {
  color: #f8fafc;
}

.case--vision .case__body {
  color: rgba(226, 232, 240, 0.78);
}

.case--vision .case__btn {
  color: #f8fafc;
  border-bottom-color: #38bdf8;
}

.case--vision .case__btn:hover {
  color: #7dd3fc;
  border-color: #7dd3fc;
}

.case--vision .case__shot {
  background: #0c1929;
}

/* Segundo caso: web sencilla, tono claro */
.case--lite {
  background: #f7fafc;
  color: #14233a;
}

.case--lite .case__label {
  color: #5a9e32;
}

.case--lite .case__name {
  color: #14233a;
}

.case--lite .case__body {
  color: rgba(20, 35, 58, 0.72);
}

.case--lite .case__btn {
  color: #14233a;
  border-bottom-color: #82c341;
}

.case--lite .case__btn:hover {
  color: #5a9e32;
  border-color: #5a9e32;
}

.case--lite .case__shot {
  background: #dfeaf4;
  border-left: 1px solid rgba(20, 35, 58, 0.08);
}

@media (min-width: 900px) {
  .case--flip {
    direction: rtl;
  }

  .case--flip > * {
    direction: ltr;
  }

  .case--lite .case__shot {
    border-left: 0;
    border-right: 1px solid rgba(20, 35, 58, 0.08);
  }
}

/* Tercer caso: Frequencias */
.case--ember {
  background: #0c0a09;
  color: #e6dfd5;
}

.case--ember .case__label {
  color: #d4a35c;
}

.case--ember .case__name {
  color: #fff7ea;
}

.case--ember .case__body {
  color: rgba(230, 223, 213, 0.78);
}

.case--ember .case__btn {
  color: #fff7ea;
  border-bottom-color: #d4a35c;
}

.case--ember .case__btn:hover {
  color: #d4a35c;
  border-color: #e4b56a;
}

.case--ember .case__shot {
  background: #1a1510;
}

/* Offer */
.offer {
  padding: clamp(3.5rem, 8vw, 5.5rem) clamp(1.25rem, 4vw, 3.2rem);
  background: var(--cream);
}

.offer__title {
  margin: 0 0 2rem;
  font-family: var(--display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--forest);
  max-width: 16ch;
}

.offer__row {
  display: grid;
  gap: 1.5rem;
  border-top: 1px solid rgba(18, 53, 40, 0.18);
  padding-top: 1.5rem;
}

@media (min-width: 800px) {
  .offer__row {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.offer__row h3 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
}

.offer__row p {
  margin: 0;
  color: var(--muted);
}

/* End */
.end {
  padding: clamp(3.5rem, 9vw, 6rem) clamp(1.25rem, 4vw, 3.2rem);
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(31, 107, 74, 0.14), transparent 55%),
    #e8f0ea;
}

.end__brand {
  margin: 0 0 0.75rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  color: var(--forest);
}

.end__title {
  margin: 0 auto 1.4rem;
  max-width: 22ch;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--ink);
}

.end__mail {
  display: inline-block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  color: var(--leaf);
  text-decoration: none;
  border-bottom: 2px solid rgba(31, 107, 74, 0.4);
}

.end__mail:hover {
  border-color: var(--leaf);
}

.end__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
  align-items: baseline;
}

.end__ig {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--forest);
  text-decoration: none;
  border-bottom: 2px solid rgba(18, 53, 40, 0.28);
}

.end__ig:hover {
  border-color: var(--forest);
}

.foot {
  padding: 1.25rem clamp(1.25rem, 4vw, 3.2rem) 1.8rem;
  border-top: 1px solid rgba(18, 53, 40, 0.12);
  background: var(--cream);
}

.foot p {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(12, 18, 16, 0.5);
}

.foot a {
  color: rgba(12, 18, 16, 0.72);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 53, 40, 0.25);
}

.foot a:hover {
  color: var(--forest);
}

@keyframes ken {
  from {
    transform: scale(1.06);
  }
  to {
    transform: scale(1.14) translate(-1.5%, -1%);
  }
}

@keyframes up {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__img,
  .hero__brand,
  .hero__title,
  .hero__lead,
  .hero__actions {
    animation: none !important;
  }
}