/* ═══════════════════════════════════════════════════════════
   RIKO TEAM — Modern Website Styles
   Stack: CSS Custom Properties + Grid + Flexbox
   Mobile-first, breakpoints: 640px (tablet), 1024px (desktop)
═══════════════════════════════════════════════════════════ */

/* ── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
address { font-style: normal; }

/* ── Custom Properties ──────────────────────────────────── */
:root {
  --clr-dark:    #0f172a;
  --clr-dark-2:  #1e293b;
  --clr-accent:  #e85d04;
  --clr-accent-h:#f97316;
  --clr-light:   #f8fafc;
  --clr-border:  #e2e8f0;
  --clr-white:   #ffffff;
  --clr-text:    #334155;
  --clr-muted:   #64748b;

  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,.08);
  --shadow-lg:   0 12px 48px rgba(0,0,0,.14);

  --nav-h:       72px;
  --transition:  0.3s ease;
}

/* ── Utility ────────────────────────────────────────────── */
.container {
  width: min(1200px, 100% - 2rem);
  margin-inline: auto;
}

.label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: .5rem;
}

.label--light { color: #f97316; }

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-dark);
  letter-spacing: -.02em;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn--accent {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn--accent:hover {
  background: var(--clr-accent-h);
  border-color: var(--clr-accent-h);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,93,4,.35);
}

.btn--outline {
  background: transparent;
  color: var(--clr-dark);
  border-color: var(--clr-border);
}
.btn--outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}

/* ── Fade-in animation ──────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--clr-border);
}

.nav.scrolled .nav__logo { color: var(--clr-dark); }
.nav.scrolled .nav__logo small { color: var(--clr-muted); }
.nav.scrolled .nav__links a { color: var(--clr-text); }
.nav.scrolled .nav__links a:hover { color: var(--clr-accent); }
.nav.scrolled .nav__burger span { background: var(--clr-dark); }

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

.nav__logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  color: #fff;
  transition: color var(--transition);
}

.nav__logo-riko {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: .05em;
}
.nav__logo-team {
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: .2em;
}
.nav__logo small {
  font-size: .6rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-top: 2px;
  transition: color var(--transition);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__links a {
  font-size: .875rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
  letter-spacing: .02em;
}
.nav__links a:hover { color: #fff; }

.nav__cta {
  background: var(--clr-accent);
  color: #fff !important;
  padding: .5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition) !important;
}
.nav__cta:hover {
  background: var(--clr-accent-h) !important;
  transform: translateY(-1px);
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.nav__burger span {
  display: block;
  width: 26px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}

/* Burger open state */
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--clr-dark);
  overflow: hidden;
}

/* Background video */
.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  pointer-events: none;
}

/* Subtle grid texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Dark overlay over video */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 15, 30, 0.65) 0%,
    rgba(10, 15, 30, 0.55) 60%,
    rgba(10, 15, 30, 0.75) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: calc(var(--nav-h) + 3rem) 5rem;
  max-width: 860px;
}

.hero__eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  border: 1px solid rgba(232,93,4,.4);
  border-radius: 100px;
  padding: .3rem .9rem;
  margin-bottom: 1.5rem;
}

.hero__headline {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.03em;
  color: #fff;
  margin-bottom: 1.75rem;
}

.hero__accent {
  background: linear-gradient(135deg, #e85d04, #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 2rem;
}

.hero__tags li {
  font-size: .8rem;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  padding: .4rem .9rem;
  border-radius: 100px;
  letter-spacing: .02em;
}

.hero__subtitle {
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255,255,255,.5);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

/* Scroll hint */
.hero__scroll-hint {
  z-index: 2;
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__scroll-hint span {
  display: block;
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, rgba(255,255,255,.5), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ═══════════════════════════════════════════════════════════
   PARTNER
═══════════════════════════════════════════════════════════ */
.partner {
  padding-block: 6rem;
  background: var(--clr-white);
}

.partner__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.partner__heading {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -.04em;
  color: var(--clr-dark);
  line-height: 1;
  margin-bottom: .5rem;
  border-bottom: 4px solid var(--clr-accent);
  padding-bottom: .75rem;
  display: inline-block;
}

.partner__sub {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-top: .75rem;
}

.partner__desc p {
  font-size: 1.05rem;
  color: var(--clr-text);
  margin-bottom: 2rem;
  line-height: 1.75;
}

/* ═══════════════════════════════════════════════════════════
   INDUSTRIES
═══════════════════════════════════════════════════════════ */
.industries {
  padding-block: 6rem;
  background: var(--clr-light);
}

.industries__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.industry-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem 1.25rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}

.industry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-accent);
}

.industry-card__icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.industry-card h3 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-dark);
  letter-spacing: .02em;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════════════════════════
   ADVANTAGES
═══════════════════════════════════════════════════════════ */
.advantages {
  padding-block: 6rem;
  background: var(--clr-white);
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.adv-card {
  background: var(--clr-light);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--clr-accent);
}

.adv-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(232,93,4,.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--clr-accent);
}

.adv-card__icon svg {
  width: 24px;
  height: 24px;
}

.adv-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: .75rem;
  line-height: 1.3;
}

.adv-card p {
  font-size: .875rem;
  color: var(--clr-muted);
  line-height: 1.65;
}

/* ═══════════════════════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════════════════════ */
.contact {
  padding-block: 6rem;
  background: var(--clr-dark);
  color: #fff;
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 1.75rem;
  color: #fff;
}

.contact__company {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: .4rem;
}

.contact address p {
  color: rgba(255,255,255,.6);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-bottom: 1.75rem;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: .625rem;
  color: rgba(255,255,255,.8);
  font-size: .95rem;
  font-weight: 500;
  transition: color var(--transition);
}
.contact__link:hover { color: var(--clr-accent); }
.contact__link svg { width: 18px; height: 18px; flex-shrink: 0; }

.contact__social {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact__social span {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
}

.contact__social a {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .875rem;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  transition: color var(--transition);
}
.contact__social a:hover { color: var(--clr-accent); }
.contact__social svg { width: 18px; height: 18px; }

/* Co-financing logos */
.contact__logos {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
}

.contact__logos-label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: 1rem;
}

.contact__logos-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.contact__logos-row img {
  height: 48px;
  width: auto;
  object-fit: contain;
  opacity: .85;
  transition: opacity var(--transition), transform var(--transition);
  background: rgba(255,255,255,.08);
  border-radius: 6px;
  padding: 6px 10px;
}

.contact__logos-row img:hover {
  opacity: 1;
  transform: translateY(-2px);
}

/* EU Card */
.eu-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 2rem;
}

.eu-card__flag {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.eu-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

.eu-card p {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
  margin-bottom: .75rem;
}

.eu-card p strong { color: rgba(255,255,255,.85); }
.eu-card p em { font-style: italic; color: rgba(255,255,255,.7); }

.eu-card__link {
  display: inline-block;
  margin-top: .5rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--clr-accent);
  letter-spacing: .04em;
  transition: color var(--transition);
}
.eu-card__link:hover { color: var(--clr-accent-h); }

/* ═══════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════ */
.footer {
  background: #060d1a;
  padding-block: 2rem;
  border-top: 1px solid rgba(255,255,255,.07);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .08em;
}
.footer__logo span:first-child { font-weight: 900; }
.footer__logo span:last-of-type { font-weight: 300; letter-spacing: .2em; }
.footer__logo small {
  font-size: .55rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-top: 3px;
}

.footer__copy {
  font-size: .75rem;
  color: rgba(255,255,255,.35);
  text-align: center;
}

.footer__social {
  display: flex;
  gap: 1rem;
}
.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.07);
  border-radius: 50%;
  color: rgba(255,255,255,.6);
  transition: background var(--transition), color var(--transition);
}
.footer__social a:hover {
  background: var(--clr-accent);
  color: #fff;
}
.footer__social svg { width: 16px; height: 16px; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (≤ 1024px)
═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .industries__grid { grid-template-columns: repeat(3, 1fr); }
  .advantages__grid { grid-template-columns: repeat(2, 1fr); }
  .partner__inner   { gap: 2.5rem; }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Mobile (≤ 768px)
═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {

  /* Nav mobile */
  .nav__burger { display: flex; }

  .nav__links {
    position: fixed;
    inset: 0;
    background: var(--clr-dark);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    font-size: 1.25rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 999;
  }

  .nav__links.open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav__links a { color: #fff; font-size: 1.1rem; }
  .nav__cta { padding: .75rem 2rem; }

  /* Partner */
  .partner__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Industries */
  .industries__grid { grid-template-columns: repeat(2, 1fr); }

  /* Advantages */
  .advantages__grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  /* Footer */
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Small mobile (≤ 480px)
═══════════════════════════════════════════════════════════ */
@media (max-width: 480px) {
  .industries__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__tags { flex-direction: column; }
  .hero__tags li { width: fit-content; }
  .contact__social { flex-wrap: wrap; }
}