/* layout.css — KOR4 Elite Fitness */

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
section { padding: var(--section-pad) 0; }

/* ── Section utilities ── */
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--size-label);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.section-title {
  font-family: var(--font-heading);
  font-size: var(--size-section-h2);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
}
.section-body {
  font-size: 1.05rem;
  font-weight: var(--fw-light);
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 62ch;
}
.section-header {
  margin-bottom: 3.5rem;
}

/* ── Nav ── */
#nav {
  position: fixed;
  top: 0; width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition: background var(--transition-mid), box-shadow var(--transition-mid);
}
#nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  box-shadow: var(--nav-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-logo img {
  height: 40px;
  width: auto;
  display: block;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-link {
  font-family: var(--font-body);
  font-size: var(--size-label);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 1px 6px rgba(0,0,0,0.55);
  transition: color var(--transition-fast);
}
#nav.scrolled .nav-link { text-shadow: none; }
.nav-link:hover { color: var(--color-accent); }

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none; border: none; cursor: pointer;
  z-index: 1002;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: var(--color-bg-deep);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  gap: 1.8rem;
}
.mobile-overlay.is-open { opacity: 1; visibility: visible; }
.mobile-overlay a {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}
.mobile-overlay a:hover { color: var(--color-accent); }
.mobile-overlay .btn-nav-cta { margin-top: 1rem; font-size: 1rem; }

/* ── Hero ── */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero-bg {
  position: absolute;
  top: -20%; bottom: -20%; left: 0; right: 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.92) 0%,
    rgba(10, 10, 10, 0.60) 50%,
    rgba(10, 10, 10, 0.88) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 4rem;
  padding-bottom: 4rem;
}
.hero-eyebrow {
  font-size: var(--size-label);
  font-weight: var(--fw-medium);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px; height: 2px;
  background: var(--color-accent);
  flex-shrink: 0;
}
.hero-title {
  font-family: var(--font-heading);
  font-size: var(--size-hero-h1);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.9;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}
.hero-title-line2 {
  color: var(--color-accent);
  display: block;
}
.hero-sub {
  font-size: 1.1rem;
  font-weight: var(--fw-light);
  line-height: 1.75;
  color: rgba(255,255,255,0.80);
  max-width: 55ch;
  margin-bottom: 2.5rem;
}
.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.4;
}
.hero-scroll-hint .scroll-line {
  width: 1px; height: 28px;
  background: var(--color-text-muted);
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll-hint span {
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

/* ── About Section ── */
.about-section { background: var(--color-bg-mid); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-text .section-body { margin-bottom: 2rem; }
.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}
.stat-item { }
.stat-number {
  font-family: var(--font-heading);
  font-size: var(--size-stat-num);
  font-weight: var(--fw-black);
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.01em;
}
.stat-label {
  font-size: 0.8rem;
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
}
.about-img-wrap {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/5;
}
.about-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
}
.about-badge {
  position: absolute;
  bottom: 1.5rem; left: 1.5rem;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.5rem 1rem;
  border-radius: 2px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Services / Tabs ── */
.services-section { background: var(--color-bg-primary); }
.tabs-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 3rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  flex-shrink: 0;
  font-family: var(--font-body);
  font-size: var(--size-label);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  padding: 0.9rem 1.6rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}
.tab-btn.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.tab-btn:hover { color: var(--color-text-primary); }
.tab-panel { display: none; }
.tab-panel.active { 
  display: grid; 
  grid-template-columns: 1fr 1fr; 
  gap: 4rem; 
  align-items: center; 
}
.tab-content .eyebrow { margin-bottom: 1rem; }
.tab-number {
  font-family: var(--font-heading);
  font-size: clamp(6rem, 12vw, 10rem);
  font-weight: var(--fw-black);
  color: rgba(191, 30, 46, 0.08);
  line-height: 1;
  margin-bottom: -0.5rem;
  letter-spacing: 0.05em;
}
.tab-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}
.tab-body {
  font-size: 1rem;
  font-weight: var(--fw-light);
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.tab-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.tab-features li {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tab-features li i { color: var(--color-accent); }
.tab-image-wrap {
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.tab-image-wrap img { width: 100%; height: 100%; object-fit: cover; }

/* ── Gallery / Work ── */
.work-section { background: var(--color-bg-mid); }
.gallery-wrap {
  position: relative;
}
.gallery-viewport {
  overflow: hidden;
  width: 100%;
}
.gallery-track {
  display: flex;
  gap: 1.5rem;
  will-change: transform;
  transition: transform 0.5s var(--ease-out-expo);
}
.gallery-card {
  flex: 0 0 calc(33.333% - 1rem);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.gallery-card figure {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}
.gallery-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-card:hover img { transform: scale(1.04); }
.gallery-card figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
}
.gallery-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}
.gallery-prev, .gallery-next {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border-accent);
  background: var(--card-bg);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.gallery-prev:hover, .gallery-next:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.gallery-counter {
  font-size: var(--size-label);
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

/* ── Reviews / Testimonials ── */
.reviews-section { background: var(--color-bg-primary); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition-mid);
}
.testimonial-card:hover { border-color: var(--color-border-accent); }
.testimonial-stars {
  display: flex;
  gap: 0.2rem;
  color: var(--color-accent-gold);
  font-size: 0.9rem;
}
.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  font-style: italic;
  flex: 1;
}
.testimonial-author {
  font-size: 0.85rem;
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
}
.testimonial-author span {
  color: var(--color-text-muted);
  font-weight: var(--fw-regular);
}

/* ── Contact ── */
.contact-section { background: var(--color-bg-mid); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.contact-info .section-body { margin-bottom: 1rem; }
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}
.contact-detail i {
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-top: 0.15rem;
}
.contact-detail-text {
  display: flex;
  flex-direction: column;
}
.contact-detail-text strong {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 0.2rem;
}
.contact-detail-text span,
.contact-detail-text a {
  font-size: 0.95rem;
  color: var(--color-text-primary);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1.2rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  color: var(--color-text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--color-text-muted); }
.contact-form textarea { min-height: 120px; resize: vertical; }

/* ── Footer ── */
footer {
  background: var(--color-bg-deep);
  padding: 4rem 0 2rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand { }
.footer-brand img {
  height: 36px;
  width: auto;
  margin-bottom: 1rem;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 35ch;
  line-height: 1.6;
  margin-bottom: 1.2rem;
}
.footer-socials {
  display: flex;
  gap: 0.75rem;
}
.footer-socials a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.footer-socials a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: rgba(191,30,46,0.1);
}
.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
  margin-bottom: 1.2rem;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-col ul a:hover { color: var(--color-accent); }
.footer-col p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .tab-panel.active {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .tab-image-wrap { order: -1; }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .gallery-card {
    flex: 0 0 calc(50% - 0.75rem);
  }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .btn-nav-cta { display: none; }
  .nav-inner .btn-nav-cta { display: none; }
  
  .hero-title {
    font-size: clamp(2.8rem, 10vw, 4.5rem);
  }
  .hero-sub { font-size: 1rem; }

  .gallery-card {
    flex: 0 0 100%;
  }

  .about-stats {
    gap: 1.5rem;
  }

  .testimonial-card { padding: 1.5rem; }
}