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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Text",
    "Segoe UI",
    sans-serif;
  line-height: 1.5;
  color: #111827;
  background-color: #f3f4f6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

button,
input,
select,
textarea {
  font: inherit;
  border: none;
  outline: none;
  background: none;
}

/* VARIABLES
   -------------------------------------------------- */
:root {
  --color-bg: #f3f4f6;
  --color-bg-light: #ffffff;
  --color-bg-accent: #111827;
  --color-primary: #111827;
  --color-secondary: #9ca3af;
  --color-accent: #fbbf24;
  --color-border: #e5e7eb;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 999px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
  --shadow-subtle: 0 10px 30px rgba(15, 23, 42, 0.08);
  --transition-fast: 0.2s ease-out;
  --transition-med: 0.35s ease-out;
  --max-width: 1120px;
}

/* LAYOUT GENERAL
   -------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section--light {
  background-color: #f9fafb;
}

.section--accent {
  background: radial-gradient(
    circle at top left,
    #fbbf24 0,
    #111827 45%,
    #020617 100%
  );
  color: #f9fafb;
}

.section__header {
  max-width: 640px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section__header h2 {
  font-size: 2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section__header p {
  color: var(--color-secondary);
}

/* GRID
   -------------------------------------------------- */
.grid {
  display: grid;
  gap: 2rem;
}

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

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

/* HEADER / NAV
   -------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 80;
  backdrop-filter: blur(12px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.7),
    transparent
  );
  color: #f9fafb;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.logo span {
  color: var(--color-accent);
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Desktop nav list */
.nav__list {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  align-items: center;
}

.nav__list a {
  position: relative;
  padding-bottom: 0.2rem;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  color: #f9fafb;
}

.nav__list a i,
.nav__list a .ph {
  font-size: 1rem;
  opacity: 0.95;
}

/* underline hover */
.nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav__list a:hover::after {
  width: 100%;
}

/* NAV TOGGLE (HAMBURGUESA) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
  background: transparent;
  border-radius: 8px;
  padding: 0.35rem;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
  transition: background-color var(--transition-fast);
  position: relative;
  z-index: 90; /* ensure toggle sits above mobile nav overlay */
}

.nav-toggle:hover {
  background: rgba(249, 250, 251, 0.06);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background-color: #f9fafb;
  border-radius: 999px;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast),
    background-color var(--transition-fast);
  display: block;
}

.nav-toggle--open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle--open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle--open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* HERO
   -------------------------------------------------- */
.hero {
  padding: 6rem 0 5rem;
  background: radial-gradient(
    circle at top left,
    #fbbf24 0,
    #111827 40%,
    #020617 100%
  );
  color: #f9fafb;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: #e5e7eb;
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2.4rem, 3.4vw, 3.4rem);
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  color: #e5e7eb;
  max-width: 32rem;
  margin-bottom: 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #d1d5db;
}

.hero__meta span {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(249, 250, 251, 0.16);
  background: rgba(15, 23, 42, 0.4);
}

/* HERO VISUAL */
.hero__visual {
  position: relative;
  min-height: 260px;
}

.hero__card {
  position: relative;
  background: rgba(15, 23, 42, 0.9);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
  max-width: 320px;
}

.hero__card h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.hero__card p {
  color: #e5e7eb;
  font-size: 0.9rem;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #fbbf24;
  margin-bottom: 0.75rem;
}

.hero__circle {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(249, 250, 251, 0.18);
  top: -40px;
  right: -40px;
  box-shadow: 0 0 60px rgba(251, 191, 36, 0.35);
}

.hero__floating-label {
  position: absolute;
  bottom: 0;
  right: 0;
  transform: translateY(60%);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(249, 250, 251, 0.18);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* BOTONES
   -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast);
}

.btn--primary {
  background-color: #fbbf24;
  color: #111827;
  box-shadow: var(--shadow-subtle);
}

.btn--primary:hover {
  background-color: #facc15;
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.35);
}

.btn--ghost {
  border-color: rgba(249, 250, 251, 0.4);
  color: #f9fafb;
  background: transparent;
}

.btn--ghost:hover {
  background: rgba(15, 23, 42, 0.6);
}

.btn--full {
  width: 100%;
}

/* CARDS SERVICIOS
   -------------------------------------------------- */
.card {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  transition:
    transform var(--transition-med),
    box-shadow var(--transition-med),
    border-color var(--transition-med),
    background-color var(--transition-med);
}

.card--service h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.card--service p {
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.card--service ul {
  list-style: disc;
  padding-left: 1.1rem;
  color: #4b5563;
  font-size: 0.9rem;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
  border-color: rgba(15, 23, 42, 0.12);
}

/* PROYECTOS
   -------------------------------------------------- */
.projects {
  align-items: stretch;
}

.project-card {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  transition:
    transform var(--transition-med),
    box-shadow var(--transition-med);
  cursor: pointer;
}

.project-card__image {
  height: 180px;
  background-size: cover;
  background-position: center;
}

.project-card__image--1 {
  background-image: linear-gradient(135deg, #fbbf24, #f97316);
}

.project-card__image--2 {
  background-image: linear-gradient(135deg, #22c55e, #16a34a);
}

.project-card__image--3 {
  background-image: linear-gradient(135deg, #38bdf8, #0ea5e9);
}

.project-card__body {
  padding: 1.5rem;
}

.project-card__body h3 {
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.project-card__body p {
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

.project-card__tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #6b7280;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-soft);
}

/* TIMELINE
   -------------------------------------------------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.timeline__item {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
}

.timeline__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background-color: #111827;
  color: #f9fafb;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.timeline__item h3 {
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.timeline__item p {
  color: var(--color-secondary);
}

/* EQUIPO
   -------------------------------------------------- */
.team {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.team__content p + p {
  margin-top: 1rem;
  color: var(--color-secondary);
}

.team__photo {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #111827, #020617);
  height: 280px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.team__photo::before {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: inherit;
  border: 1px solid rgba(249, 250, 251, 0.12);
}

.team__badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background-color: rgba(15, 23, 42, 0.9);
  color: #fbbf24;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* TESTIMONIOS
   -------------------------------------------------- */
.testimonials {
  align-items: stretch;
}

.testimonial {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.testimonial p {
  font-style: italic;
  margin-bottom: 1rem;
}

.testimonial__author {
  font-size: 0.85rem;
  color: #6b7280;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}

/* CONTACTO
   -------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: flex-start;
}

.contact__content p {
  margin-top: 0.75rem;
  color: #e5e7eb;
}

.contact__meta {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.contact__meta li + li {
  margin-top: 0.4rem;
}

.contact__form {
  background-color: rgba(15, 23, 42, 0.7);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
}

.form__group {
  margin-bottom: 1rem;
}

.form__group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  border-radius: 999px;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(15, 23, 42, 0.7);
  color: #f9fafb;
}

.form__group textarea {
  border-radius: 16px;
  resize: vertical;
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: #9ca3af;
}

/* FOOTER
   -------------------------------------------------- */
.footer {
  padding: 2.5rem 0 3.5rem;
  background-color: #020617;
  color: #9ca3af;
}

.footer__inner {
  text-align: center;
  font-size: 0.85rem;
}

.footer__inner p + p {
  margin-top: 0.4rem;
}

/* BOTÓN SUBIR ARRIBA
   -------------------------------------------------- */
#btn-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background-color: #111827;
  color: #f9fafb;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.45);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity var(--transition-med),
    transform var(--transition-med);
  z-index: 40;
}

#btn-top:hover {
  background-color: #020617;
}

.btn-top--visible {
  opacity: 1 !important;
  pointer-events: auto !important;
  transform: translateY(0) !important;
}

/* ANIMACIONES SCROLL & INTERACCIÓN
   -------------------------------------------------- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}

.scroll-reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* RESPONSIVE
   -------------------------------------------------- */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__visual {
    order: -1;
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .team,
  .contact {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* MOBILE NAV FIXES: fondo, visibilidad y estado cerrado por defecto
   -------------------------------------------------- */
@media (max-width: 768px) {
  .header__inner {
    padding: 0.75rem 0;
  }

  /* NAV MÓVIL — OCULTO POR DEFECTO */
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;

    /* Estado cerrado */
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;

    background: rgba(15, 23, 42, 0.96);
    transition:
      transform var(--transition-med),
      opacity var(--transition-med),
      background-color var(--transition-med);

    display: flex;
    align-items: center;
    justify-content: center;

    z-index: 60;
    padding-top: 4.5rem; /* espacio para el header */
  }

  /* NAV ABIERTO */
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;

    background: linear-gradient(
      180deg,
      rgba(15, 23, 42, 0.98) 0%,
      rgba(2, 6, 23, 0.98) 100%
    );

    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    overflow-y: auto;
  }

  /* LISTA VERTICAL */
  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
    font-size: 1rem;
    align-items: center;
    padding: 2rem;
    width: 100%;
    max-width: 420px;
  }

  /* LINKS MÁS VISIBLES */
  .nav__list a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1.25rem;
    width: 100%;
    border-radius: 12px;
    background: transparent;
    color: #f9fafb;
    justify-content: center;
    transition:
      background-color var(--transition-fast),
      transform var(--transition-fast);
  }

  .nav__list a:hover {
    background: rgba(249, 250, 251, 0.04);
    transform: translateY(-2px);
  }

  /* HAMBURGUESA SIEMPRE VISIBLE ENCIMA DEL NAV */
  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 100;
    padding: 0.5rem;
    border-radius: 8px;
  }

  /* BARRAS DEL ICONO */
  .nav-toggle span {
    width: 26px;
    height: 2.5px;
    background-color: #f9fafb;
    border-radius: 999px;
    transition:
      transform 0.25s ease,
      opacity 0.25s ease;
  }

  /* ANIMACIÓN DEL ICONO AL ABRIR */
  .nav-toggle--open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle--open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle--open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

.hero {
  padding-top: 5rem;
}

.grid--3,
.grid--2,
.timeline {
  grid-template-columns: minmax(0, 1fr);
}

.hero__meta {
  gap: 0.6rem;
}

/* VERY SMALL SCREENS */
@media (max-width: 480px) {
  .hero__title {
    font-size: 2.1rem;
  }

  .hero__card {
    max-width: 100%;
  }

  .contact__form {
    padding: 1.25rem;
  }

  #btn-top {
    right: 1rem;
    bottom: 1rem;
  }
}