/* ==========================================================================
   Expo Solda LUMAQ 2026 — Landing Page
   ========================================================================== */

:root {
  --black: #0a0a0b;
  --black-2: #131315;
  --black-3: #1c1c1f;
  --gray-800: #2a2a2e;
  --gray-600: #55555c;
  --gray-400: #8b8b92;
  --silver: #d7dade;
  --silver-light: #eef0f2;
  --white: #ffffff;
  --off-white: #f5f5f4;
  --orange: #f7941e;
  --orange-dark: #d97706;
  --orange-glow: rgba(247, 148, 30, 0.45);

  --font-head: "Open Sans", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 10px;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* ---------- Accessibility ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 300;
  background: var(--orange);
  color: var(--black);
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 13px;
  padding: 12px 18px;
  border-radius: 6px;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 16px;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--black-2);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
svg { width: 1em; height: 1em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Typography helpers ---------- */
.eyebrow {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  margin: 0 0 12px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--orange);
  margin-right: 10px;
  vertical-align: middle;
}
.eyebrow-dark { color: var(--orange-dark); }

.section-title {
  font-family: var(--font-head);
  font-weight: 600;
  text-transform: uppercase;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  margin: 0 0 28px;
  max-width: 760px;
  color: var(--black-2);
  text-wrap: balance;
}
.section-title-light { color: var(--white); }

.text-accent { color: var(--orange); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  cursor: pointer;
  border-radius: 6px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
  color: var(--black);
  box-shadow: 0 8px 24px var(--orange-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px var(--orange-glow);
}
.btn-lg { padding: 16px 30px; font-size: 15px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #06070b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.site-header.header-hidden {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-logo { height: 44px; width: auto; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.main-nav a {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--silver);
  transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--orange); }
.nav-cta {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
  color: var(--black) !important;
  font-weight: 700 !important;
  padding: 10px 18px;
  border-radius: 6px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--silver);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--black);
  color: var(--white);
  padding: 100px 0 90px;
  overflow: hidden;
  border-bottom: 3px solid var(--orange);
}
.hero-photo {
  position: absolute;
  inset: 0;
  background-image: url("assets/hero-bg.jpg");
  background-size: cover;
  background-position: center 30%;
  opacity: 0.55;
  filter: grayscale(0.15) contrast(1.05);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 60px),
    linear-gradient(100deg, rgba(10,10,11,0.97) 0%, rgba(10,10,11,0.88) 32%, rgba(10,10,11,0.55) 60%, rgba(10,10,11,0.75) 100%),
    radial-gradient(circle at 20% 10%, rgba(26,26,29,0.4) 0%, rgba(10,10,11,0.2) 55%);
  pointer-events: none;
}
.spark {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 12px 3px var(--orange-glow);
  opacity: 0;
  animation: spark-fly 3.6s ease-in infinite;
}
.spark-1 { top: 22%; right: 12%; animation-delay: 0.2s; }
.spark-2 { top: 55%; right: 20%; animation-delay: 1.4s; }
.spark-3 { top: 38%; right: 6%; animation-delay: 2.5s; }
@keyframes spark-fly {
  0% { opacity: 0; transform: translate(0, 0) scale(0.6); }
  10% { opacity: 1; }
  100% { opacity: 0; transform: translate(-70px, 90px) scale(0.2); }
}

.hero-inner { position: relative; max-width: 780px; }
.hero-title {
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(32px, 5.2vw, 56px);
  line-height: 1.1;
  margin: 0 0 22px;
  text-wrap: balance;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.65;
  color: var(--silver);
  max-width: 620px;
  margin: 0 0 34px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-bottom: 30px;
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-head);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--white);
}
.meta-icon { width: 19px; height: 19px; color: var(--orange); flex-shrink: 0; }

.badge-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.pill {
  font-family: var(--font-head);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 999px;
}
.pill-orange { background: var(--orange); color: var(--black); }
.pill-outline { border: 1px solid rgba(255,255,255,0.35); color: var(--white); }

.hero-note {
  color: var(--gray-400);
  font-size: 14.5px;
  max-width: 520px;
  margin: 0 0 34px;
  line-height: 1.6;
}

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section-light { background: var(--off-white); }
.section-dark {
  background: linear-gradient(180deg, var(--black) 0%, var(--black-2) 100%);
  color: var(--white);
}

/* ---------- Brands grid ---------- */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.brand-card {
  background: var(--white);
  border: 1px solid #e4e4e2;
  border-radius: var(--radius);
  padding: 26px 14px;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--black-2);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.brand-card span { display: block; font-size: 12px; color: var(--gray-600); font-weight: 400; }
.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.08);
  border-color: var(--orange);
}

/* ---------- Topics grid ---------- */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 50px;
}
.topic-card {
  background: var(--black-3);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 26px 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.topic-card:hover { border-color: var(--orange); transform: translateY(-3px); }
.topic-card svg {
  width: 30px;
  height: 30px;
  color: var(--orange);
  flex-shrink: 0;
  margin-top: 2px;
}
.topic-card p { margin: 0; font-size: 15px; line-height: 1.5; color: var(--silver); }

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

/* ---------- CTA / Empresas section ---------- */
.section-cta {
  background: linear-gradient(120deg, #1a1a1d 0%, var(--black) 60%);
  color: var(--white);
  position: relative;
  border-top: 3px solid var(--orange);
  border-bottom: 3px solid var(--orange);
}
.cta-inner { max-width: 720px; }
.cta-text { font-size: 16.5px; line-height: 1.7; color: var(--silver); margin: 0 0 18px; }
.warning-box {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: rgba(247, 148, 30, 0.1);
  border: 1px solid rgba(247, 148, 30, 0.35);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-top: 30px;
}
.warning-box svg { width: 26px; height: 26px; color: var(--orange); flex-shrink: 0; }
.warning-box strong { display: block; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 0.03em; font-size: 14.5px; margin-bottom: 6px; }
.warning-box p { margin: 0; font-size: 14.5px; color: var(--silver); line-height: 1.55; }

/* ---------- Form ---------- */
.form-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}
.form-lead { font-size: 16px; line-height: 1.65; color: var(--gray-600); margin: 0 0 28px; max-width: 420px; }
.form-highlights { display: flex; flex-direction: column; gap: 14px; }
.form-highlights li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14.5px;
  color: var(--black-2);
  font-weight: 500;
}
.form-highlights svg {
  width: 20px; height: 20px;
  color: var(--white);
  background: var(--orange);
  border-radius: 50%;
  padding: 4px;
  flex-shrink: 0;
}

.reg-form {
  background: var(--white);
  border: 1px solid #e4e4e2;
  border-radius: 14px;
  padding: 36px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.06);
}
.form-row { margin-bottom: 20px; }
.form-row-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 20px;
}
.form-row-split .form-row { margin-bottom: 0; }
label {
  display: block;
  font-family: var(--font-head);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--black-2);
  margin-bottom: 8px;
}
input, textarea {
  width: 100%;
  border: 1px solid #d8d8d5;
  border-radius: 8px;
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--black-2);
  background: var(--off-white);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(247,148,30,0.15);
  background: var(--white);
}
textarea { resize: vertical; min-height: 90px; }
.field-hint { display: block; margin-top: 8px; font-size: 12.5px; color: var(--gray-600); line-height: 1.5; }
.form-privacy { font-size: 12px; color: var(--gray-600); text-align: center; margin: 16px 0 0; line-height: 1.5; }
input.invalid, textarea.invalid { border-color: #d64545; background: #fdf1f1; }

.form-error {
  display: none;
  font-size: 13px;
  color: #d64545;
  background: #fdf1f1;
  border: 1px solid rgba(214, 69, 69, 0.3);
  border-radius: 8px;
  padding: 12px 14px;
  text-align: center;
  margin: 16px 0 0;
  line-height: 1.5;
}
.form-error.active { display: block; }

.btn[disabled] { opacity: 0.7; cursor: not-allowed; transform: none !important; }

/* ---------- Evento info ---------- */
.info-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-content: start;
  margin-bottom: 50px;
}
.info-cards-full { grid-template-columns: repeat(4, 1fr); }
.info-card {
  background: var(--black-3);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.info-card svg { width: 24px; height: 24px; color: var(--orange); flex-shrink: 0; margin-top: 2px; }
.info-card-wide { grid-column: 1 / -1; }
.info-label {
  display: block;
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.info-value { display: block; font-size: 15.5px; font-weight: 600; color: var(--white); }
.info-sub { display: block; font-size: 13.5px; color: var(--silver); margin-top: 6px; line-height: 1.55; font-weight: 400; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 44px 0;
  text-align: center;
  color: var(--gray-400);
}
.footer-logo { height: 38px; margin: 0 auto 16px; }
.site-footer p { margin: 4px 0; font-size: 13.5px; }
.footer-copy { color: var(--gray-600); font-size: 12.5px; margin-top: 14px; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,11,0.72);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal-box {
  background: var(--white);
  border-radius: 14px;
  padding: 40px 34px;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 30px 70px rgba(0,0,0,0.35);
}
.modal-box svg { width: 52px; height: 52px; color: var(--orange); margin-bottom: 16px; }
.modal-box h3 { font-family: var(--font-head); text-transform: uppercase; font-size: 22px; margin: 0 0 12px; }
.modal-box p { font-size: 14.5px; color: var(--gray-600); line-height: 1.6; margin: 0 0 24px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .form-layout { grid-template-columns: 1fr; gap: 40px; }
  .info-cards-full { grid-template-columns: repeat(2, 1fr); }
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
  .brands-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--black);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transform: translateY(-140%);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .main-nav.active { transform: translateY(0); opacity: 1; }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-cta { text-align: center; margin-top: 10px; }
  .nav-toggle { display: flex; }
  .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .section { padding: 64px 0; }
  .hero { padding: 60px 0 60px; }
  .brands-grid { grid-template-columns: repeat(2, 1fr); }
  .topics-grid { grid-template-columns: 1fr; }
  .info-cards { grid-template-columns: 1fr; }
  .form-row-split { grid-template-columns: 1fr; }
  .reg-form { padding: 26px 22px; }
  .hero-meta { gap: 16px 22px; }
}