/* ===================================================
   MaintenanceTech Qc – Stylesheet
   =================================================== */

/* ---------- VARIABLES & RESET ---------- */
:root {
  --primary:    #e8680a;
  --primary-dk: #c4550a;
  --dark:       #0d1b2a;
  --dark-2:     #162032;
  --mid:        #253547;
  --light-bg:   #f4f6f9;
  --white:      #ffffff;
  --text:       #333d4b;
  --text-light: #6b7a8d;
  --border:     #dde3ec;
  --radius:     12px;
  --shadow:     0 4px 24px rgba(13,27,42,.10);
  --shadow-lg:  0 8px 40px rgba(13,27,42,.18);
  --transition: .3s ease;
  --font-head:  'Montserrat', sans-serif;
  --font-body:  'Open Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- CONTAINER ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(232,104,10,.35);
}
.btn-primary:hover {
  background: var(--primary-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232,104,10,.45);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,.7);
  color: var(--white);
}
.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }

/* ---------- SECTIONS ---------- */
.section       { padding: 100px 0; }
.section-dark  { background: var(--dark); color: var(--white); }
.section-light { background: var(--light-bg); }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  background: rgba(232,104,10,.12);
  color: var(--primary);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.section-dark .section-tag {
  background: rgba(232,104,10,.25);
}
.section-header h2 {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-dark .section-header h2 { color: var(--white); }
.section-sub {
  color: var(--text-light);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-dark .section-sub { color: rgba(255,255,255,.65); }

/* ---------- NAVBAR ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: var(--dark);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
}
.logo-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.logo em { color: var(--primary); font-style: normal; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255,255,255,.85);
  font-weight: 500;
  font-size: .9rem;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}
.nav-links a:not(.btn-nav):hover { color: var(--white); }
.nav-links a:not(.btn-nav):hover::after { width: 100%; }

.btn-nav {
  background: var(--primary) !important;
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  transition: background var(--transition) !important;
}
.btn-nav:hover { background: var(--primary-dk) !important; }
.btn-nav::after { display: none !important; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.burger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO ---------- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 40%, var(--mid) 100%);
  overflow: hidden;
}
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 30%, rgba(232,104,10,.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(232,104,10,.08) 0%, transparent 60%);
}
.hero-overlay { display: none; }
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 100px;
  padding-bottom: 60px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-tag::before {
  content: '';
  display: inline-block;
  width: 28px; height: 2px;
  background: var(--primary);
}
#hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
}
#hero h1 span { color: var(--primary); }
.hero-sub {
  color: rgba(255,255,255,.75);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 560px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0 36px;
}
.stat:first-child { padding-left: 0; }
.stat-num {
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.stat span { color: var(--primary); font-weight: 900; font-size: 1.5rem; line-height: 1; display: inline; }
.stat p { color: rgba(255,255,255,.6); font-size: .8rem; margin-top: 4px; }
.stat-sep {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,.15);
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.hero-scroll a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 50%;
  color: rgba(255,255,255,.7);
  animation: bounce 2s infinite;
  transition: border-color var(--transition), color var(--transition);
}
.hero-scroll a:hover { border-color: var(--primary); color: var(--primary); }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

/* ---------- SERVICES ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .5s ease, transform .5s ease, box-shadow .3s ease, border-color .3s ease;
}
.service-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.service-card--wide {
  grid-column: 1 / -1;
}
.service-card--wide ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}
.service-icon {
  width: 58px; height: 58px;
  background: rgba(232,104,10,.1);
  color: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  transition: background var(--transition);
}
.service-card:hover .service-icon { background: var(--primary); color: var(--white); }
.service-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: .92rem;
}
.service-card ul { display: flex; flex-direction: column; gap: 8px; }
.service-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .88rem;
  color: var(--text);
}
.service-card li .fa-check { color: var(--primary); font-size: .75rem; }

/* ---------- WHY US ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: background var(--transition), border-color var(--transition);
}
.why-card:hover {
  background: rgba(255,255,255,.08);
  border-color: var(--primary);
}
.why-icon {
  width: 52px; height: 52px;
  background: rgba(232,104,10,.2);
  color: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 18px;
}
.why-card h4 {
  font-family: var(--font-head);
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.why-card p {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  line-height: 1.7;
}

/* ---------- GALLERY ---------- */
.gallery-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 22px;
  border-radius: 50px;
  border: 2px solid var(--border);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .82rem;
  color: var(--text);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  min-height: 200px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  background: var(--light-bg);
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,27,42,.85) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-overlay h4 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: .92rem;
  margin-bottom: 4px;
}
.gallery-item-overlay span {
  color: var(--primary);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.gallery-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
}
.gallery-empty i { font-size: 2.5rem; margin-bottom: 16px; color: var(--border); display: block; }
.gallery-hint {
  text-align: center;
  margin-top: 24px;
  font-size: .85rem;
  color: var(--text-light);
}
.gallery-hint code {
  background: var(--light-bg);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .82rem;
  color: var(--primary);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius);
  object-fit: contain;
}
.lightbox-close {
  position: absolute;
  top: 20px; right: 24px;
  color: var(--white);
  font-size: 1.8rem;
  cursor: pointer;
  transition: color var(--transition);
}
.lightbox-close:hover { color: var(--primary); }

/* ---------- PROCESS ---------- */
.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.step {
  flex: 1;
  min-width: 180px;
  max-width: 220px;
  text-align: center;
  padding: 24px 16px;
}
.step-num {
  font-family: var(--font-head);
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
  opacity: .3;
  line-height: 1;
  margin-bottom: 12px;
  transition: opacity var(--transition);
}
.step:hover .step-num { opacity: 1; }
.step-content h4 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .98rem;
  color: var(--dark);
  margin-bottom: 8px;
}
.step-content p { font-size: .85rem; color: var(--text-light); line-height: 1.65; }
.step-arrow {
  display: flex;
  align-items: center;
  padding-top: 40px;
  color: var(--primary);
  font-size: 1.5rem;
  opacity: .4;
}

/* ---------- CONTACT ---------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}
.contact-info h3 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.contact-info > p {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
}
.contact-items { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-item-icon {
  width: 44px; height: 44px;
  background: rgba(232,104,10,.1);
  color: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item strong {
  display: block;
  font-family: var(--font-head);
  font-size: .82rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.contact-item span, .contact-item a { color: var(--text-light); font-size: .9rem; }
.contact-item a:hover { color: var(--primary); }
.contact-social {
  display: flex;
  gap: 12px;
}
.contact-social a {
  width: 42px; height: 42px;
  background: var(--light-bg);
  color: var(--text);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  transition: background var(--transition), color var(--transition);
}
.contact-social a:hover { background: var(--primary); color: var(--white); }

/* Form */
.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-group label {
  font-family: var(--font-head);
  font-size: .8rem;
  font-weight: 600;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.form-group label span { color: var(--primary); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,104,10,.12);
}
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #e03131;
}
.form-group textarea { resize: vertical; }
.form-success {
  display: none;
  margin-top: 16px;
  padding: 14px 20px;
  background: rgba(32,178,90,.1);
  border: 1px solid rgba(32,178,90,.3);
  border-radius: 8px;
  color: #1a7a3f;
  font-weight: 600;
  font-size: .9rem;
  gap: 10px;
  align-items: center;
}
.form-success.show { display: flex; }

/* ---------- FOOTER ---------- */
footer {
  background: var(--dark-2);
  color: rgba(255,255,255,.7);
  padding: 72px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: .88rem; line-height: 1.7; max-width: 260px; }
.footer-links h5, .footer-contact h5 {
  font-family: var(--font-head);
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--white);
  margin-bottom: 18px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: .88rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary); }
.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .88rem;
  margin-bottom: 10px;
}
.footer-contact i { color: var(--primary); width: 16px; }
.footer-contact a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
}
.footer-bottom p {
  font-size: .82rem;
  color: rgba(255,255,255,.35);
  text-align: center;
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 46px; height: 46px;
  background: var(--primary);
  color: var(--white);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  box-shadow: 0 4px 16px rgba(232,104,10,.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 999;
}
.back-to-top.show { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dk); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--wide { grid-column: 1 / -1; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  /* Navbar mobile */
  .burger { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    bottom: 0;
    width: 280px;
    background: var(--dark);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 32px;
    gap: 24px;
    transition: right var(--transition);
    box-shadow: -4px 0 30px rgba(0,0,0,.3);
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 1rem; }

  .hero-cta { flex-direction: column; }
  .hero-stats { gap: 24px; }
  .stat-sep { display: none; }
  .stat { padding: 0; align-items: center; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card--wide ul { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }

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

  .process-steps { flex-direction: column; align-items: center; gap: 16px; }
  .step-arrow { transform: rotate(90deg); padding-top: 0; }

  .contact-wrapper { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }

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

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; }
}