/* Essencial IT — one-page */
:root {
  --navy-dark: #1a1e3b;
  --navy: #1d345e;
  --teal: #119f97;
  --seafoam: #5dbcaa;
  --cyan: #68c3cd;
  --black: #000000;
  --gray: #bdbcbc;
  --bg: #f7f9fb;
  --bg-soft: #eef3f6;
  --text: #1a1e3b;
  --text-muted: #4a5568;
  --white: #ffffff;
  --radius: 4px;
  --header-h: 4.25rem;
  --font: "Outfit", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-soft: 0 12px 40px rgba(26, 30, 59, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color 0.2s var(--ease), opacity 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

a:hover {
  color: var(--seafoam);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(1100px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(247, 249, 251, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26, 30, 59, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.brand img {
  width: auto;
  height: 2.35rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a:not(.btn) {
  color: var(--navy);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a:not(.btn):hover {
  color: var(--teal);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.35rem;
  height: 2px;
  background: var(--navy);
  margin-inline: auto;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.55rem 0.95rem;
  font-size: 0.88rem;
}

.btn-whatsapp {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}

.btn-whatsapp:hover {
  background: var(--seafoam);
  border-color: var(--seafoam);
  color: var(--navy-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: rgba(29, 52, 94, 0.28);
}

.btn-ghost:hover {
  color: var(--navy-dark);
  border-color: var(--teal);
  background: rgba(17, 159, 151, 0.1);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  color: var(--navy-dark);
  overflow: hidden;
  background: var(--bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 85% 65% at 78% 18%, rgba(104, 195, 205, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 55% at 8% 78%, rgba(17, 159, 151, 0.16), transparent 52%),
    linear-gradient(155deg, #ffffff 0%, var(--bg) 42%, #e4eef2 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 5rem;
  max-width: 42rem;
  animation: hero-in 0.9s var(--ease) both;
}

.hero-logo {
  width: min(100%, 26rem);
  height: auto;
  margin-bottom: 2rem;
  filter: drop-shadow(0 10px 28px rgba(26, 30, 59, 0.1));
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--navy-dark);
}

.hero-lead {
  margin: 0 0 2rem;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  font-weight: 300;
  color: var(--text-muted);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section-header {
  max-width: 34rem;
  margin-bottom: 2.75rem;
}

.section-header h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.65rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--navy-dark);
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Services */
.services {
  background: var(--bg);
}

.service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(26, 30, 59, 0.12);
}

.service-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid rgba(26, 30, 59, 0.12);
  align-items: start;
}

.service-index {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--teal);
  padding-top: 0.35rem;
}

.service-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy);
}

.service-item p {
  margin: 0;
  color: var(--text-muted);
  max-width: 40rem;
}

/* About */
.about {
  background:
    linear-gradient(180deg, var(--bg-soft), var(--bg));
}

.about-inner {
  max-width: 40rem;
}

.about-text {
  margin: 0;
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* Contact */
.contact {
  background: var(--navy-dark);
  color: var(--white);
}

.contact .section-header h2 {
  color: var(--white);
}

.contact .section-header p {
  color: var(--gray);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: start;
}

.contact-aside h3 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.contact-aside p {
  margin: 0 0 1.35rem;
  color: var(--gray);
}

.contact-note {
  margin-top: 1.75rem !important;
  font-size: 0.92rem;
}

.contact-note strong {
  color: var(--cyan);
  font-weight: 500;
}

.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(104, 195, 205, 0.18);
  border-radius: 8px;
  padding: 1.35rem 1.25rem 1.5rem;
  box-shadow: var(--shadow-soft);
}

.site-form {
  display: grid;
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid rgba(104, 195, 205, 0.28);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.35);
  color: var(--white);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.4;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: rgba(189, 188, 188, 0.55);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid rgba(17, 159, 151, 0.55);
  outline-offset: 1px;
  border-color: var(--teal);
}

.form-field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--cyan) 50%),
    linear-gradient(135deg, var(--cyan) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.25rem;
}

.form-field select option {
  color: var(--navy-dark);
  background: var(--white);
}

.form-field textarea {
  resize: vertical;
  min-height: 8rem;
}

.field-error {
  color: #ffb4b4;
  font-size: 0.85rem;
  min-height: 1.1em;
}

.form-errors {
  color: #ffb4b4;
  font-size: 0.92rem;
  margin: 0;
}

.form-errors ul {
  margin: 0;
  padding-left: 1.1rem;
}

.btn-submit {
  width: 100%;
  margin-top: 0.35rem;
  border: 0;
  cursor: pointer;
}

.btn-submit:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
}

.form-success {
  display: flex;
  align-items: center;
  min-height: 12rem;
  padding: 1rem 0.25rem;
}

.form-success p {
  margin: 0;
  color: var(--cyan);
  font-size: 1.1rem;
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background: var(--black);
  color: var(--gray);
  padding: 1.5rem 0;
  border-top: 1px solid rgba(104, 195, 205, 0.1);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.92rem;
}

.site-footer a {
  color: var(--cyan);
  text-decoration: none;
}

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

.footer-wa {
  font-weight: 600;
  font-size: 0.92rem;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Responsive */
@media (max-width: 860px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(247, 249, 251, 0.98);
    border-bottom: 1px solid rgba(26, 30, 59, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
  }

  .nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a:not(.btn) {
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(26, 30, 59, 0.1);
  }

  .site-nav .btn {
    margin-top: 0.85rem;
    width: 100%;
  }

  .hero-inner {
    padding: 3.25rem 0 4rem;
  }

  .hero-logo {
    width: min(100%, 18rem);
    margin-bottom: 1.5rem;
  }

  .section {
    padding: 4rem 0;
  }

  .service-item {
    grid-template-columns: 2.75rem 1fr;
    gap: 0.85rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-inner,
  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .btn:hover {
    transform: none;
  }
}