:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fa;
  --color-text: #1c1f24;
  --color-text-muted: #5b6470;
  --color-border: #e7e9ec;
  --color-primary: #b00000;
  --color-primary-dark: #8a0000;
  --color-primary-tint: #fdecec;
  --color-steel: #6b7280;
  --color-steel-dark: #3a3f47;
  --color-dark: #292d33;
  --font-heading: "Poppins", Arial, sans-serif;
  --font-body: "Inter", Arial, sans-serif;
  --container-width: 1200px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.25;
}

.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}

.section-heading h2 {
  font-size: clamp(28px, 4vw, 36px);
  margin-top: 8px;
}

.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 10px;
}

.eyebrow--light {
  color: rgba(255, 255, 255, 0.85);
}

/* Interior page header */
.page-hero {
  padding: 64px 0 56px;
  background: var(--color-bg-alt);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(30px, 4.5vw, 44px);
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
  font-size: 17px;
}

/* Loader */
.loader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__ring {
  width: 44px;
  height: 44px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
}

.btn--secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
  gap: 8px;
}

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

.btn__icon {
  flex-shrink: 0;
}

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

.btn--small {
  padding: 10px 18px;
  font-size: 14px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand--footer {
  margin-bottom: 16px;
}

.brand__logo {
  height: 36px;
}

.brand__logo--footer {
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--color-text);
}

.site-nav a:hover {
  color: var(--color-primary);
}

.site-nav a.btn--primary,
.site-nav a.btn--primary:hover {
  color: #fff;
}

.site-nav a.btn--outline {
  color: var(--color-primary);
}

.site-nav a.btn--outline:hover {
  color: #fff;
}

.site-nav a.is-current {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
}

/* Hero */
.hero {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.hero__visual img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  margin-bottom: 20px;
}

.hero__text {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 30px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 30px;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__badges span {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 30px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

/* About */
.about__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: start;
}

.about__cards {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.about__cards article {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 24px;
}

.about__cards h3 {
  margin-bottom: 8px;
  color: var(--color-primary);
}

.timeline {
  margin-top: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 24px;
}

.timeline h3 {
  margin-bottom: 14px;
}

.timeline ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

.timeline strong {
  color: var(--color-primary);
  margin-right: 8px;
}

/* Grids: services / training / portfolio */
.services-grid,
.training-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.service-card,
.training-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.service-card:hover,
.training-card:hover {
  transform: translateY(-6px);
}

.service-card__icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.service-card h3,
.training-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.service-card p,
.training-card p {
  color: var(--color-text-muted);
  font-size: 15px;
}

.link-btn {
  display: inline-block;
  margin-top: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

/* Portfolio */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  border: 1px solid var(--color-border);
  background: #fff;
  padding: 10px 20px;
  border-radius: 30px;
  cursor: pointer;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.portfolio-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.portfolio-card[hidden] {
  display: none;
}

.portfolio-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--color-border);
}

.portfolio-card__content {
  padding: 22px;
}

.portfolio-card__content p {
  color: var(--color-text-muted);
  font-size: 15px;
}

/* Testimonials */
.testimonial-source {
  font-size: 14px;
  color: var(--color-text-muted);
}

.testimonial-slider {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  min-height: 260px;
}

.testimonial-card {
  display: none;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  text-align: center;
}

.testimonial-card.active {
  display: block;
}

.testimonial-card img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  margin: 0 auto 16px;
}

.testimonial-card p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.testimonial-source-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 6px;
}

.testimonial-link {
  display: inline-block;
  margin-top: 10px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  background: var(--color-border);
  cursor: pointer;
}

.dots button.active {
  background: var(--color-primary);
}

/* Stats */
.stats-section {
  background: var(--color-dark);
  color: #fff;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 40px;
  font-family: var(--font-heading);
  color: var(--color-primary);
}

.stat span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 70px 0;
}

.cta__wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta h2 {
  font-size: clamp(24px, 3.5vw, 32px);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contact-list {
  list-style: none;
  margin: 20px 0;
  display: grid;
  gap: 10px;
}

.map-wrapper {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.map-frame {
  width: 100%;
  height: 240px;
  border: 0;
}

.map-link {
  display: block;
  text-align: center;
  padding: 12px;
  background: #fff;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-primary);
}

.contact-form {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.form-status {
  min-height: 18px;
  font-size: 14px;
  color: var(--color-primary);
}

/* Footer */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
}

.footer-grid h3 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 14px;
}

.footer-grid ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-grid a {
  text-decoration: none;
  color: inherit;
}

.footer-grid a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

/* Auth / login placeholder page */
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--color-bg-alt);
  padding: 40px 5%;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
  text-align: center;
}

.auth-card__brand {
  display: inline-flex;
  justify-content: center;
  margin-bottom: 24px;
}

.auth-card h1 {
  font-size: 26px;
  margin-bottom: 10px;
}

.auth-card__hint {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.auth-form {
  display: grid;
  gap: 14px;
  text-align: left;
  margin-bottom: 20px;
}

.auth-form label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
}

.auth-form input {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-alt);
}

.auth-form button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-form button[disabled]:hover {
  transform: none;
}

.auth-form__status {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 90;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* Reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--right {
  transform: translateX(24px);
}

.reveal.is-active {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 960px) {
  .hero__grid,
  .about__grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 5%;
    gap: 16px;
    display: none;
  }

  .site-nav.is-open {
    display: flex;
  }

  .services-grid,
  .training-grid {
    grid-template-columns: 1fr;
  }

  .cta__wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}