/* ==========================================================================
   RadFire — landing page styles
   ========================================================================== */

:root {
  --c-black: #0b0b0b;
  --c-black-soft: #161616;
  --c-red: #ff1616;
  --c-red-dark: #b32f2f;
  --c-white: #ffffff;
  --c-offwhite: #fdfbfd;
  --c-lightblue: #e8f7ff;
  --c-gray-50: #f6f6f6;
  --c-gray-100: #ebebeb;
  --c-gray-300: #cdcdcd;
  --c-gray-600: #6b6b6b;
  --c-gray-800: #2b2b2b;

  --font-heading: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;

  --container-w: 1200px;
  --radius: 14px;
  --shadow-soft: 0 10px 30px rgba(0,0,0,0.08);
  --shadow-hard: 0 20px 45px rgba(0,0,0,0.35);

  --header-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--c-gray-800);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; margin: 0 0 16px; }
p { margin: 0 0 16px; }
ul { margin: 0; padding: 0; }

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-red);
  color: #fff;
  padding: 12px 20px;
  z-index: 1000;
}
.skip-link:focus { left: 0; }

/* -------------------- Buttons -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--c-red); color: #fff; }
.btn-primary:hover { background: var(--c-red-dark); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.55); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* -------------------- Header -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--c-black);
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  gap: 32px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 2px;
}
.main-nav a:hover { color: #fff; }
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--c-red);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}
.main-nav a:hover::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* -------------------- Language picker -------------------- */
.lang-picker { position: relative; }
.lang-picker-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font-body);
}
.lang-picker-toggle:hover { background: rgba(255,255,255,0.16); }
.lang-picker-toggle .flag { font-size: 1.1rem; line-height: 1; }
.lang-picker-toggle svg { color: rgba(255,255,255,0.7); }

.lang-picker-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: #fff;
  color: var(--c-gray-800);
  border-radius: 12px;
  box-shadow: var(--shadow-hard);
  list-style: none;
  min-width: 210px;
  padding: 8px;
  display: none;
  max-height: 70vh;
  overflow-y: auto;
  z-index: 250;
}
.lang-picker.open .lang-picker-menu { display: block; }
.lang-picker-menu li { list-style: none; }
.lang-picker-menu li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: inherit;
  text-decoration: none;
}
.lang-picker-menu li a:hover { background: var(--c-gray-50); }
.lang-picker-menu li[aria-selected="true"] a { background: var(--c-lightblue); font-weight: 600; }
.lang-picker-menu .flag { font-size: 1.2rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; }

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(0,0,0,0.88) 0%, rgba(0,0,0,0.72) 45%, rgba(0,0,0,0.5) 100%);
}
.hero-inner { position: relative; z-index: 2; max-width: 720px; }
.hero-inner h1 {
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  color: #fff;
  margin-bottom: 20px;
}
.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 620px;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-red);
  margin-bottom: 14px;
}
.eyebrow-light { color: var(--c-lightblue); }

/* -------------------- USP bar -------------------- */
.usp-bar { padding: 56px 0; background: var(--c-white); }
.usp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.usp-item { display: flex; align-items: center; gap: 18px; }
.usp-item img { flex-shrink: 0; }
.usp-title { font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem; margin-bottom: 4px; }
.usp-text { font-size: 0.92rem; color: var(--c-gray-600); margin-bottom: 0; }

/* -------------------- Sections -------------------- */
.section { padding: 96px 0; }
.section-alt { background: var(--c-gray-50); }
.section-dark { background: var(--c-black); color: rgba(255,255,255,0.85); }
.section-title { font-size: clamp(1.7rem, 3vw, 2.4rem); max-width: 760px; }
.section-title-light { font-size: clamp(1.7rem, 3vw, 2.4rem); color: #fff; max-width: 760px; }
.section-intro { max-width: 680px; color: var(--c-gray-600); font-size: 1.05rem; }
.section-intro-light { max-width: 680px; color: rgba(255,255,255,0.75); font-size: 1.05rem; }

/* -------------------- Problem -------------------- */
.problem-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.problem-card {
  background: var(--c-black-soft);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
}
.problem-num {
  display: block;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--c-red);
  margin-bottom: 12px;
}
.problem-card h3 { color: #fff; font-size: 1.15rem; margin-bottom: 10px; }
.problem-card p { color: rgba(255,255,255,0.7); margin-bottom: 0; font-size: 0.96rem; }

/* -------------------- Pillars (value) -------------------- */
.pillar-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pillar-card {
  padding: 28px 24px;
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius);
  background: #fff;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.pillar-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-3px); }
.pillar-card h3 { font-size: 1.1rem; color: var(--c-red); margin-bottom: 10px; }
.pillar-card p { font-size: 0.95rem; color: var(--c-gray-600); margin-bottom: 0; }

/* -------------------- Products -------------------- */
.product-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.product-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-4px); }
.product-media {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  overflow: hidden;
}
.product-media img { max-height: 170px; width: auto; object-fit: contain; }
.product-spec {
  align-self: flex-start;
  background: var(--c-lightblue);
  color: var(--c-black);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.product-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.product-card p { font-size: 0.92rem; color: var(--c-gray-600); flex: 1; }
.product-link {
  font-weight: 700;
  color: var(--c-red);
  font-size: 0.9rem;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.product-link::after { content: '→'; transition: transform 0.15s ease; }
.product-link:hover::after { transform: translateX(4px); }

/* -------------------- Effect -------------------- */
.effect-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.effect-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--c-black-soft);
  border: 1px solid rgba(255,255,255,0.08);
}
.effect-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2rem;
  color: var(--c-red);
  margin-bottom: 10px;
}
.effect-text { color: rgba(255,255,255,0.75); font-size: 0.92rem; margin-bottom: 0; }

/* -------------------- About -------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-text p:not(.eyebrow):not(.about-location) { color: var(--c-gray-600); }
.about-location { font-weight: 600; color: var(--c-black); }
.about-map {
  height: 380px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.about-map iframe { width: 100%; height: 100%; }

/* -------------------- Contact -------------------- */
.section-contact {
  position: relative;
  background-size: cover;
  background-position: center;
  color: #fff;
}
.contact-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(0,0,0,0.92) 10%, rgba(0,0,0,0.8) 60%, rgba(20,0,0,0.7) 100%);
}
.contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-details { margin-top: 28px; }
.contact-details p { margin-bottom: 6px; color: rgba(255,255,255,0.85); }
.contact-details a:hover { color: var(--c-red); }

.contact-form {
  background: #fff;
  color: var(--c-gray-800);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-hard);
}
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; }
.form-row input[type="text"],
.form-row input[type="email"],
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--c-gray-300);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--c-red);
  box-shadow: 0 0 0 3px rgba(255,22,22,0.12);
}
.form-row-checkbox { display: flex; gap: 10px; align-items: flex-start; }
.form-row-checkbox input { margin-top: 4px; }
.form-row-checkbox label { font-size: 0.8rem; font-weight: 400; color: var(--c-gray-600); }
.form-row-checkbox a { color: var(--c-red); font-weight: 600; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-status { min-height: 20px; font-size: 0.88rem; margin-top: 12px; margin-bottom: 0; }
.form-status.success { color: #1a8a3d; }
.form-status.error { color: var(--c-red); }

/* -------------------- Footer -------------------- */
.site-footer { background: var(--c-black); color: rgba(255,255,255,0.7); padding: 40px 0; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo-footer { font-size: 1.05rem; }
.footer-contact p { margin-bottom: 4px; font-size: 0.9rem; }
.footer-contact a:hover { color: var(--c-red); }
.footer-copy { font-size: 0.85rem; margin-bottom: 0; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .effect-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-map { height: 300px; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--c-black);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .main-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }

  .usp-grid { grid-template-columns: 1fr; gap: 24px; }
  .problem-grid { grid-template-columns: 1fr; }
  .pillar-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .effect-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
  .hero { min-height: 560px; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
  .contact-form { padding: 24px; }
}

@media (max-width: 480px) {
  .effect-grid { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
}