/* ============================================
   T&T Metal — Marketing Site Styles
   ============================================ */

:root {
  --color-bg: #0f1114;
  --color-surface: #1a1d23;
  --color-surface-alt: #22262e;
  --color-border: #2e333d;
  --color-text: #e8eaed;
  --color-text-muted: #9aa0ab;
  --color-accent: #c8502d;
  --color-accent-hover: #e05a32;
  --color-accent-soft: rgba(200, 80, 45, 0.12);
  --color-white: #ffffff;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- HEADER ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15, 17, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(15, 17, 20, 0.95);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
}
.logo-img {
  height: 56px;
  max-width: 180px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}
.logo-img-footer {
  height: 64px;
  max-width: 220px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-white); }
.nav-toggle { display: none; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  padding: 10px 24px;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: var(--color-white); }
.btn-nav {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 8px 20px;
  border-radius: var(--radius);
}
.btn-nav:hover { background: var(--color-accent-hover); }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-full { width: 100%; }

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  overflow: hidden;
}
.hero-slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: contain;
  background-position: right center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.hero-slide.active {
  opacity: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(15, 17, 20, 0.88) 0%,
    rgba(15, 17, 20, 0.7) 40%,
    rgba(15, 17, 20, 0.5) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 120px 24px 80px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- SECTIONS ---- */
.section { padding: 100px 0; }
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

/* ---- ABOUT ---- */
.about { background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 1.05rem;
}
.about-text strong { color: var(--color-text); }
.about-stats {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.stat {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.stat-icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: var(--radius);
  flex-shrink: 0;
}
.stat-label {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
}

/* ---- SERVICES ---- */
.services { background: var(--color-surface); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: border-color var(--transition), transform var(--transition);
}
.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
.service-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  margin-bottom: 20px;
  color: var(--color-accent);
}
.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---- GALLERY ---- */
.gallery {
  background: var(--color-bg);
}
.gallery-desc {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-top: -20px;
  margin-bottom: 40px;
}
.gallery-category {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.gallery-grid + .gallery-category {
  margin-top: 48px;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), transform var(--transition);
}
.gallery-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 4 / 3;
}
.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-white);
}

/* ---- WHY US ---- */
.why-us { background: var(--color-bg); }
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.reason {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition);
}
.reason:hover { border-color: var(--color-accent); }
.reason-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.4;
  margin-bottom: 12px;
}
.reason h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.reason p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- SERVICE AREA ---- */
.area {
  background: var(--color-surface);
  text-align: center;
}
.area-desc {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: -20px auto 32px;
}
.area-desc strong { color: var(--color-text); }
.area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: 700px;
  margin: 0 auto 24px;
}
.area-tags span {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color var(--transition), color var(--transition);
}
.area-tags span:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.area-note {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ---- REVIEWS ---- */
.reviews {
  background: var(--color-surface);
  text-align: center;
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: left;
}
.review-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition);
}
.review-card:hover { border-color: var(--color-accent); }
.review-stars {
  color: #f4b400;
  font-size: 1.2rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.review-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}
.review-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ---- FAQ ---- */
.faq { background: var(--color-bg); }
.faq-category {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.faq-list + .faq-category {
  margin-top: 40px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--color-accent); }
.faq-item summary {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-left: 16px;
  transition: transform var(--transition);
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item p {
  padding: 0 24px 18px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item a {
  color: var(--color-accent);
  font-weight: 600;
}
.faq-item a:hover { color: var(--color-accent-hover); }

/* ---- CONTACT ---- */
.contact { background: var(--color-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact-info p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}
.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-method {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-method strong {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.contact-method a {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}
.contact-method a:hover { color: var(--color-accent-hover); }
.contact-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  opacity: 0.6;
  font-style: italic;
}
.contact-form-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.5;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239aa0ab' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* ---- FOOTER ---- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
}
.footer-links h4,
.footer-services h4 {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.footer-links ul li,
.footer-services ul li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-white); }
.footer-services li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---- MOBILE NAV ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- STICKY CALL BUTTON ---- */
.sticky-call {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 100px;
  padding: 14px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(200, 80, 45, 0.4);
  transition: background var(--transition), transform var(--transition);
  text-decoration: none;
}
.sticky-call:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
}
.sticky-call svg { flex-shrink: 0; }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    background: rgba(15, 17, 20, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    transform: translateY(-120%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.open { transform: translateY(0); }
  .logo-img { height: 44px; }
  .logo-img-footer { height: 52px; }
  .hero { min-height: 80vh; }
  .hero-slide {
    background-size: cover;
    background-position: center;
  }
  .hero-overlay {
    background: linear-gradient(
      180deg,
      rgba(15, 17, 20, 0.7) 0%,
      rgba(15, 17, 20, 0.4) 40%,
      rgba(15, 17, 20, 0.7) 100%
    );
  }
  .hero-content { padding: 100px 20px 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item img { aspect-ratio: 4 / 3; }
  .reasons-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .sticky-call { display: flex; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .logo-img { height: 38px; }
  .hero { min-height: 70vh; }
  .hero-content { padding: 90px 16px 48px; }
  .hero h1 { font-size: 1.75rem; }
  .service-card { padding: 28px; }
  .reason { padding: 24px; }
  .contact-form-wrap { padding: 24px; }
  .reasons-grid { grid-template-columns: 1fr; }
  .area-tags { gap: 8px; }
  .area-tags span { padding: 6px 14px; font-size: 0.8rem; }
}

/* ---- FOOTER SOCIAL ---- */
.footer-social h4 {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.footer-social a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-social a:hover { color: var(--color-white); }
.footer-phone {
  margin-top: 16px;
}
.footer-phone a {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
}
.footer-phone a:hover { color: var(--color-accent-hover); }

/* ---- SCROLL ANIMATIONS ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}