/* ===================================================
   BASE
   =================================================== */
:root {
  --clr-bg: #0d1117;
  --clr-bg-alt: #161b22;
  --clr-surface: #1d2431;
  --clr-surface-strong: #131923;
  --clr-text: #e7edf4;
  --clr-text-soft: #a8b3bf;
  --clr-border: #2f3744;
  --clr-primary: #12a3a0;
  --clr-primary-strong: #0f7d7b;
  --clr-warning: #f6ad2e;
  --clr-danger: #ff6b6b;
  --clr-success: #49c271;
  --shadow: 0 18px 30px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  font-family: "Nunito", "Trebuchet MS", sans-serif;
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.65;
  background-image:
    radial-gradient(circle at 10% 0%, rgba(18, 163, 160, 0.16) 0, transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(246, 173, 46, 0.13) 0, transparent 26%),
    linear-gradient(180deg, #111722 0%, #0d1117 50%, #0b0f16 100%);
}

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

ul,
ol {
  padding-left: 1.2rem;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

/* ===================================================
   HEADER
   =================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(11, 16, 24, 0.82);
  backdrop-filter: blur(10px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  border-color: var(--clr-border);
  box-shadow: 0 8px 20px rgba(10, 20, 30, 0.08);
}

.header__inner {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: "Chakra Petch", "Verdana", sans-serif;
  font-weight: 700;
  color: var(--clr-primary-strong);
  font-size: clamp(1rem, 3vw, 1.3rem);
  letter-spacing: 0.02em;
}

.header__toggle {
  background: none;
  border: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.header__toggle span {
  width: 26px;
  height: 3px;
  border-radius: 999px;
  background: var(--clr-text);
  transition: transform var(--transition), opacity var(--transition);
}

.header__toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.header__toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.header__nav {
  position: fixed;
  top: 70px;
  right: -100%;
  width: min(320px, 78%);
  height: calc(100vh - 70px);
  background: var(--clr-surface-strong);
  border-left: 1px solid var(--clr-border);
  padding: 1.6rem;
  transition: right var(--transition);
}

.header__nav.open {
  right: 0;
}

.header__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.header__link {
  display: inline-block;
  font-weight: 700;
  color: var(--clr-text-soft);
  border-bottom: 2px solid transparent;
  padding-bottom: 0.1rem;
  transition: color var(--transition), border-color var(--transition);
}

.header__link:hover,
.header__link.active {
  color: var(--clr-primary-strong);
  border-color: var(--clr-primary);
}

/* ===================================================
   HERO
   =================================================== */
.hero {
  min-height: 100svh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 6.2rem 0 3rem;
}

.hero__content {
  background: linear-gradient(145deg, rgba(26, 34, 47, 0.92), rgba(16, 23, 33, 0.94));
  border: 1px solid var(--clr-border);
  border-radius: calc(var(--radius) + 4px);
  padding: clamp(1.4rem, 3vw, 2.3rem);
  box-shadow: var(--shadow);
}

.hero__kicker {
  font-family: "Chakra Petch", sans-serif;
  color: var(--clr-warning);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.86rem;
  margin-bottom: 0.8rem;
}

.hero__title {
  font-family: "Chakra Petch", sans-serif;
  font-size: clamp(1.85rem, 7vw, 3.5rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}

.hero__subtitle {
  max-width: 740px;
  margin: 0 auto 1.5rem;
  color: var(--clr-text-soft);
}

.btn {
  display: inline-block;
  border-radius: 999px;
  font-weight: 800;
  padding: 0.74rem 1.4rem;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  background: var(--clr-primary-strong);
}

/* ===================================================
   STRUCTURE
   =================================================== */
.section {
  padding: clamp(3.2rem, 7vw, 5.2rem) 0;
}

.section--alt {
  background: var(--clr-bg-alt);
  border-top: 1px solid rgba(47, 55, 68, 0.7);
  border-bottom: 1px solid rgba(47, 55, 68, 0.7);
}

.section__badge {
  display: inline-block;
  margin-bottom: 0.7rem;
  background: rgba(18, 163, 160, 0.16);
  color: var(--clr-primary-strong);
  border: 1px solid rgba(18, 163, 160, 0.5);
  padding: 0.28rem 0.72rem;
  border-radius: 999px;
  text-transform: uppercase;
  font-weight: 800;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.section__title {
  font-family: "Chakra Petch", sans-serif;
  font-size: clamp(1.55rem, 5vw, 2.65rem);
  margin-bottom: 1.5rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.warning-text {
  color: rgb(246, 173, 46);
}

.danger-text {
  color: #ff6b6b;
}

.info-panel {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.info-panel h3 {
  font-family: "Chakra Petch", sans-serif;
  margin-bottom: 0.55rem;
}

.info-panel p,
.info-panel li {
  color: var(--clr-text-soft);
}

.info-panel--alert {
  border-color: rgba(246, 173, 46, 0.45);
  background: linear-gradient(180deg, rgba(53, 42, 25, 0.65) 0%, rgba(44, 34, 21, 0.72) 100%);
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-top: 1rem;
}

.mini-grid div {
  border-radius: var(--radius-sm);
  background: #1a2230;
  border: 1px solid rgba(246, 173, 46, 0.4);
  padding: 0.6rem;
  text-align: center;
}

.mini-grid strong {
  display: block;
  font-family: "Chakra Petch", sans-serif;
  color: var(--clr-danger);
  font-size: 1.25rem;
}

.mini-grid span {
  font-size: 0.82rem;
  color: var(--clr-text-soft);
}

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

.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-3px);
}

.card__title {
  font-family: "Chakra Petch", sans-serif;
  margin-bottom: 0.4rem;
}

.card__text,
.card__list li {
  color: var(--clr-text-soft);
}

.card__list {
  margin-top: 0.55rem;
}

.reaction-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.reaction {
  border-radius: var(--radius);
  padding: 1.1rem;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
}

.reaction h3 {
  font-family: "Chakra Petch", sans-serif;
  margin-bottom: 0.45rem;
}

.reaction ul,
.reaction p {
  color: var(--clr-text-soft);
}

.reaction--leve {
  background: rgba(31, 62, 41, 0.6);
  border-color: rgba(73, 194, 113, 0.5);
}

.reaction--moderado {
  background: rgba(63, 48, 24, 0.62);
  border-color: rgba(246, 173, 46, 0.5);
}

.reaction--grave {
  background: rgba(68, 30, 30, 0.62);
  border-color: rgba(255, 107, 107, 0.5);
}

.steps {
  display: grid;
  gap: 0.9rem;
  list-style: none;
  padding-left: 0;
  counter-reset: steps;
}

.step {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem;
  position: relative;
}

.step h3 {
  font-family: "Chakra Petch", sans-serif;
  margin-bottom: 0.35rem;
}

.step p {
  color: var(--clr-text-soft);
}

.footer {
  padding: 1.7rem 0;
  border-top: 1px solid var(--clr-border);
  background: #0b0f16;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: center;
  color: var(--clr-text-soft);
  text-align: center;
}

.footer__back-top {
  color: var(--clr-primary-strong);
  font-weight: 800;
}


[data-animate] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}


@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reaction-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .header__toggle {
    display: none;
  }

  .header__nav {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .header__links {
    flex-direction: row;
    gap: 1.4rem;
  }

  .header__link {
    font-size: 0.95rem;
  }

  .card-grid--effects {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}