/* ============================================
   FYYNAA — Industrial Metal Solutions
   Modern Manufacturing Website Stylesheet
   ============================================ */

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

:root {
  --primary: #0F2A4A;
  --primary-light: #1B3A5C;
  --accent: #C8963E;
  --accent-hover: #E0AD52;
  --metal: #A8B2BD;
  --metal-light: #D0D6DE;
  --dark: #0A0F16;
  --text: #2D3748;
  --text-light: #718096;
  --bg: #F7F8FA;
  --white: #FFFFFF;
  --shadow: 0 4px 24px rgba(15,42,74,0.08);
  --shadow-lg: 0 12px 48px rgba(15,42,74,0.12);
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

/* --- Thin Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.35); }
* { scrollbar-width: thin; scrollbar-color: rgba(0,0,0,0.2) transparent; }

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-dark { background: var(--primary); color: var(--white); }
.section-alt { background: var(--bg); }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.3rem; }

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  text-align: center;
}

.section-title { margin-bottom: 20px; text-align: center; }
.section-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 48px;
  text-align: center;
}
.section-dark .section-desc { color: var(--metal-light); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}
.nav.scrolled {
  background: rgba(15,42,74,0.95);
  backdrop-filter: blur(12px);
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; }

.nav-logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 2px;
}
.nav-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }

.nav-lang {
  display: flex;
  gap: 8px;
  margin-left: 24px;
}
.nav-lang a {
  color: rgba(255,255,255,0.6);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
}
.nav-lang a.active { color: var(--accent); border-color: var(--accent); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: var(--white); transition: var(--transition); }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(10,15,22,0.85) 0%, rgba(15,42,74,0.8) 50%, rgba(27,58,92,0.75) 100%),
    url('../images/hero-bg.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(200,150,62,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200,150,62,0.04) 0%, transparent 50%);
  opacity: 1;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(transparent, var(--dark));
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 120px 0 40px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(200,150,62,0.15);
  border: 1px solid rgba(200,150,62,0.3);
  border-radius: 40px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 28px;
  letter-spacing: 1px;
}
.hero h1 { color: var(--white); margin-bottom: 24px; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--metal-light); font-size: 1.15rem; margin-bottom: 40px; max-width: 640px; margin-left: auto; margin-right: auto; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,150,62,0.3); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.05); }

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat { text-align: center; min-width: 140px; }
.hero-stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.hero-stat-label { font-size: 0.8rem; color: var(--metal-light); margin-top: 8px; letter-spacing: 1.5px; }

/* --- About --- */
.about-center {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.about-center h2 { margin-bottom: 20px; font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
.about-center p { color: var(--text-light); margin-bottom: 16px; font-size: 1.05rem; line-height: 1.8; }
.about-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.about-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: 24px 16px;
  background: var(--bg);
  border-radius: var(--radius);
  transition: var(--transition);
}
.about-feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.about-feature-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,150,62,0.1);
  border-radius: 12px;
  flex-shrink: 0;
  font-size: 1.4rem;
}
.about-feature h4 { font-size: 0.95rem; margin-bottom: 2px; }
.about-feature p { font-size: 0.85rem; color: var(--text-light); margin: 0; }
/* --- Carousel --- */
.carousel-wrapper {
  margin-top: 64px;
  overflow: hidden;
  position: relative;
  width: 100%;
}
.carousel-wrapper::before,
.carousel-wrapper::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
}
.carousel-wrapper::before {
  left: 0;
  background: linear-gradient(to right, var(--white), transparent);
}
.carousel-wrapper::after {
  right: 0;
  background: linear-gradient(to left, var(--white), transparent);
}
.carousel-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: scroll-left 40s linear infinite;
}
.carousel-track:hover {
  animation-play-state: paused;
}
.carousel-track .carousel-img {
  width: 280px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  flex-shrink: 0;
  transition: var(--transition);
}
.carousel-track .carousel-img:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 12px)); }
}

/* --- Capabilities --- */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.cap-card {
  position: relative;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
  overflow: hidden;
}
.cap-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.cap-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.cap-card:hover::before { opacity: 1; }
.cap-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,150,62,0.12);
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 1.6rem;
}
.cap-card h3 { color: var(--white); margin-bottom: 8px; font-size: 1.15rem; }
.cap-card p { color: var(--metal); font-size: 0.9rem; }

/* --- Products --- */
.products-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.products-tab {
  padding: 10px 20px;
  border: 1px solid var(--metal-light);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  color: var(--text-light);
}
.products-tab:hover { border-color: var(--primary); color: var(--primary); }
.products-tab.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #f0f0f0;
  transition: var(--transition);
}
.product-card:hover .product-card-img { transform: scale(1.03); }
.product-card-body { padding: 20px; }
.product-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.product-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.product-card p { font-size: 0.88rem; color: var(--text-light); }

/* --- Industries --- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.industry-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.industry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.industry-icon {
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15,42,74,0.06);
  border-radius: 16px;
  font-size: 2rem;
}
.industry-card h3 { font-size: 1rem; margin-bottom: 4px; }
.industry-card p { font-size: 0.82rem; color: var(--text-light); }

/* --- Quality --- */
.quality-center {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.quality-center h2 { margin-bottom: 20px; font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
.quality-center > p { color: var(--metal-light); margin-bottom: 16px; font-size: 1.05rem; line-height: 1.8; }
.quality-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}
.quality-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 28px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  transition: var(--transition);
}
.quality-step:hover { background: rgba(255,255,255,0.08); border-color: var(--accent); transform: translateY(-4px); }
.quality-step-num {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(200,150,62,0.15);
  border-radius: 14px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
}
.quality-step h3 { color: var(--white); font-size: 1rem; margin-bottom: 2px; }
.quality-step p { color: var(--metal); font-size: 0.88rem; line-height: 1.5; }

.quality-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 80px;
  border: 2px solid rgba(200,150,62,0.4);
  border-radius: 16px;
  background: rgba(22,45,71,0.6);
  margin: 48px auto 0;
  max-width: 480px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.quality-badge-icon { font-size: 4rem; margin-bottom: 20px; }
.quality-badge h3 { color: var(--white); font-size: 1.8rem; margin-bottom: 10px; font-weight: 800; }
.quality-badge p { color: var(--metal-light); font-size: 1rem; line-height: 1.6; }

/* --- Why Us --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}
.why-card {
  padding: 40px 28px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}
.why-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.why-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 16px;
  font-size: 2rem;
}
.why-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.why-card p { font-size: 0.9rem; color: var(--text-light); }

/* --- CTA --- */
.cta {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  text-align: center;
}
.cta h2 { color: var(--white); margin-bottom: 16px; }
.cta p { color: var(--metal-light); margin-bottom: 32px; font-size: 1.1rem; }

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-form { display: flex; flex-direction: column; gap: 16px; align-items: center; }
.form-group { display: flex; flex-direction: column; gap: 6px; width: 100%; max-width: 480px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.form-group input, .form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--metal-light);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,150,62,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.contact-info { display: flex; flex-direction: column; gap: 24px; align-items: center; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  width: 100%;
  max-width: 400px;
}
.contact-item-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary);
  border-radius: 12px;
  color: var(--accent);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item h4 { font-size: 0.95rem; margin-bottom: 2px; }
.contact-item p { font-size: 0.88rem; color: var(--text-light); }

/* --- Footer --- */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; }
.footer h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 16px; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 10px; }
.footer li a { font-size: 0.88rem; color: rgba(255,255,255,0.5); }
.footer li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { position: static; margin-top: 48px; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .quality-steps { grid-template-columns: repeat(2, 1fr); }
  .about-features { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-lang { display: none; }
  .nav-toggle { display: flex; }
  .section { padding: 64px 0; }
  .hero-content { padding: 100px 0 60px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .about-features { grid-template-columns: 1fr; }
  .quality-steps { grid-template-columns: 1fr; }
  .quality-badge { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .carousel-track .carousel-img { width: 200px; height: 140px; }
}