/* =============================================
   ENGSITE — Professional Engineering Company CSS
   Color palette:
   --primary:   #FF6B35 (orange)
   --dark:      #0F1923 (deep navy)
   --dark2:     #1A2A3A
   --blue:      #1565C0
   --light-bg:  #F5F7FA
   ============================================= */

:root {
  --primary: #FF6B35;
  --primary-dark: #E55A22;
  --dark: #0F1923;
  --dark2: #1A2A3A;
  --dark3: #243447;
  --blue: #1565C0;
  --blue-light: #1976D2;
  --text: #1E2D3D;
  --text-muted: #6B7A8D;
  --light-bg: #F5F7FA;
  --white: #FFFFFF;
  --border: #E2E8F0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15,25,35,.10);
  --shadow-lg: 0 8px 48px rgba(15,25,35,.18);
  --transition: .25s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ======== NAVBAR ======== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: var(--dark);
  box-shadow: 0 2px 20px rgba(0,0,0,.4);
  padding: 12px 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--white);
}
.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  font-size: 1.2rem;
  color: var(--white);
}
.brand-text { letter-spacing: -.5px; }

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar-menu a {
  color: rgba(255,255,255,.85);
  font-weight: 500;
  font-size: .95rem;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.navbar-menu a:hover { color: var(--white); background: rgba(255,255,255,.1); }
.btn-nav-call {
  background: var(--primary) !important;
  color: var(--white) !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
}
.btn-nav-call:hover { background: var(--primary-dark) !important; }
.navbar-toggler {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
}

/* ======== BUTTONS ======== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.3;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,53,.35); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.5);
}
.btn-outline-light:hover { background: rgba(255,255,255,.15); border-color: var(--white); }
.btn-wa {
  background: #25D366;
  color: var(--white);
  border-color: #25D366;
}
.btn-wa:hover { background: #1dbd5b; transform: translateY(-2px); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: 12px; }
.btn-block { width: 100%; justify-content: center; }

/* ======== HERO ======== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg-gradient {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark3) 50%, #1a3a5c 100%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,25,35,.85) 0%, rgba(15,25,35,.6) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,53,.2);
  color: var(--primary);
  border: 1px solid rgba(255,107,53,.4);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: .5px;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
  max-width: 800px;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(255,255,255,.75);
  margin-bottom: 40px;
  max-width: 640px;
  font-weight: 400;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
}
.stat-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.stat-label {
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.5);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  z-index: 2;
}
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ======== SECTIONS ======== */
.section { padding: 96px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header-light .section-title,
.section-header-light .section-subtitle { color: var(--white); }
.section-label {
  display: inline-block;
  background: rgba(255,107,53,.12);
  color: var(--primary);
  border: 1px solid rgba(255,107,53,.3);
  border-radius: 100px;
  padding: 4px 16px;
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}
.section-action { text-align: center; margin-top: 48px; }

/* ======== SERVICES ======== */
.section-services { background: var(--light-bg); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-icon-wrap {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  margin-bottom: 20px;
  color: var(--white);
}
.service-icon-orange { background: linear-gradient(135deg, #FF6B35, #FF8C61); }
.service-icon-blue   { background: linear-gradient(135deg, #1565C0, #1E88E5); }
.service-icon-yellow { background: linear-gradient(135deg, #F59E0B, #FBBF24); }
.service-icon-green  { background: linear-gradient(135deg, #059669, #10B981); }
.service-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.service-card p { color: var(--text-muted); font-size: .95rem; margin-bottom: 20px; flex: 1; }
.service-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.service-list li { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--text); }
.service-list li i { color: var(--primary); font-size: .85rem; flex-shrink: 0; }
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  transition: gap var(--transition);
  margin-top: auto;
}
.service-link:hover { gap: 10px; }

/* ======== WHY US ======== */
.section-why { background: var(--dark); }
.section-why .section-title { color: var(--white); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.why-item {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: background var(--transition), transform var(--transition);
}
.why-item:hover { background: rgba(255,107,53,.08); transform: translateY(-4px); }
.why-icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 16px;
}
.why-item h4 { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.why-item p { color: rgba(255,255,255,.55); font-size: .9rem; }

/* ======== PORTFOLIO GRID ======== */
.section-portfolio { background: var(--white); }
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.portfolio-grid-full { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.portfolio-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.portfolio-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--light-bg);
}
.portfolio-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.portfolio-card:hover .portfolio-card-img img { transform: scale(1.06); }
.portfolio-card-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
  color: var(--border);
  font-size: 3rem;
}
.portfolio-card-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--primary);
  color: var(--white);
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.portfolio-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.portfolio-card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; line-height: 1.35; }
.portfolio-card-body p { color: var(--text-muted); font-size: .9rem; flex: 1; margin-bottom: 12px; }
.portfolio-card-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.portfolio-card-meta span { display: flex; align-items: center; gap: 5px; font-size: .82rem; color: var(--text-muted); }
.portfolio-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  margin-top: auto;
}

/* ======== PROCESS SECTION ======== */
.section-process { background: var(--light-bg); }
.process-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.process-step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  flex: 1;
  min-width: 180px;
  max-width: 240px;
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  font-size: .8rem;
  font-weight: 800;
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon { font-size: 1.8rem; color: var(--blue); margin-bottom: 12px; margin-top: 4px; }
.process-step h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: .85rem; color: var(--text-muted); }
.process-arrow { font-size: 1.5rem; color: var(--border); flex-shrink: 0; }

/* ======== ABOUT SECTION ======== */
.section-about { background: var(--white); }
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-content .section-label { margin-bottom: 12px; }
.about-content .section-title { text-align: left; margin-bottom: 20px; }
.about-text { color: var(--text-muted); line-height: 1.8; margin-bottom: 36px; }
.about-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.astat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.astat span {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.astat small {
  font-size: .8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}
.about-card-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.acard {
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--white);
}
.acard i { font-size: 2rem; }
.acard-1 { background: linear-gradient(135deg, #FF6B35, #FF8C61); }
.acard-2 { background: linear-gradient(135deg, #F59E0B, #FBBF24); color: var(--dark); }
.acard-3 { background: linear-gradient(135deg, #059669, #10B981); }
.acard-4 { background: linear-gradient(135deg, #1565C0, #1E88E5); }

/* ======== CONTACT SECTION ======== */
.section-contact { background: var(--dark2); padding: 96px 0; }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-info .section-label { background: rgba(255,107,53,.2); }
.contact-info .section-title { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 16px; }
.text-white { color: var(--white) !important; }
.text-light-muted { color: rgba(255,255,255,.6); margin-bottom: 36px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
}
.contact-detail-item:hover { color: var(--white); }
.cd-icon {
  width: 44px; height: 44px;
  background: rgba(255,107,53,.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.cd-label { display: block; font-size: .75rem; color: rgba(255,255,255,.45); margin-bottom: 2px; }
.cd-value { display: block; font-weight: 600; }
.contact-messengers { display: flex; gap: 12px; flex-wrap: wrap; }
.messenger-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: .9rem;
  transition: all var(--transition);
}
.messenger-btn.wa { background: #25D366; color: var(--white); }
.messenger-btn.wa:hover { background: #1dbd5b; transform: translateY(-2px); }
.messenger-btn.tg { background: #2AABEE; color: var(--white); }
.messenger-btn.tg:hover { background: #1a9bd6; transform: translateY(-2px); }

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}
.contact-form h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-family: var(--font);
  font-size: .95rem;
  color: var(--text);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-note { font-size: .75rem; color: var(--text-muted); margin-top: 12px; text-align: center; }
.form-success {
  margin-top: 16px;
  padding: 14px 18px;
  background: #ECFDF5;
  color: #059669;
  border-radius: 10px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-error-msg {
  margin-top: 16px;
  padding: 14px 18px;
  background: #FEF2F2;
  color: #DC2626;
  border-radius: 10px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ======== CTA BANNER ======== */
.section-cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 24px;
  text-align: center;
}
.section-cta h2 { color: var(--white); font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 12px; }
.section-cta p { color: rgba(255,255,255,.8); font-size: 1.1rem; margin-bottom: 32px; }
.section-cta .btn-primary { background: var(--white); color: var(--primary); border-color: var(--white); }
.section-cta .btn-primary:hover { background: var(--light-bg); }

/* ======== PAGE HERO (inner pages) ======== */
.page-hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark3) 100%);
  padding: 140px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero.page-hero-project { text-align: left; padding-bottom: 40px; }
.page-hero .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.page-hero .hero-overlay { position: absolute; inset: 0; background: rgba(15,25,35,.75); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: var(--white); font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 800; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,.7); font-size: 1.1rem; }
.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,53,.2);
  color: var(--primary);
  border: 1px solid rgba(255,107,53,.4);
  border-radius: 100px;
  padding: 5px 16px;
  font-size: .82rem;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.project-meta-bar {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.project-meta-bar span { display: flex; align-items: center; gap: 6px; color: rgba(255,255,255,.7); font-size: .9rem; }

/* ======== FILTER BAR ======== */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 100px;
  border: 2px solid var(--border);
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--white);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* ======== PROJECT DETAIL ======== */
.project-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.project-description { font-size: 1rem; line-height: 1.85; color: var(--text); margin-bottom: 40px; }
.project-description p { margin-bottom: 16px; }
.project-section { margin-bottom: 48px; }
.project-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  display: block;
  background: var(--light-bg);
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(15,25,35,.7);
  color: var(--white);
  font-size: .8rem;
  padding: 6px 10px;
}
.videos-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.video-responsive { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: var(--radius); }
.video-responsive iframe { position: absolute; inset: 0; width: 100%; height: 100%; }
.video-caption { font-size: .85rem; color: var(--text-muted); margin-top: 8px; }
.project-back { margin-top: 16px; }

.sidebar-cta {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 20px;
}
.sidebar-cta h3 { color: var(--white); font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.sidebar-cta p { color: rgba(255,255,255,.6); font-size: .9rem; margin-bottom: 20px; }
.sidebar-cta .btn { margin-bottom: 10px; font-size: .9rem; }
.sidebar-info {
  background: var(--light-bg);
  border-radius: var(--radius);
  padding: 20px;
}
.sidebar-info h4 { font-size: .85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 10px; }
.sidebar-info p { display: flex; align-items: center; gap: 8px; font-weight: 600; }

.related-section { margin-top: 72px; }
.related-title { font-size: 1.5rem; font-weight: 800; margin-bottom: 28px; }

/* ======== EMPTY STATE ======== */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}
.empty-state i { font-size: 4rem; display: block; margin-bottom: 16px; color: var(--border); }
.empty-state p { margin-bottom: 24px; }

/* ======== LIGHTBOX ======== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox-inner img { max-width: 90vw; max-height: 80vh; object-fit: contain; border-radius: var(--radius); }
.lightbox-close {
  position: absolute;
  top: -48px; right: 0;
  background: rgba(255,255,255,.15);
  border: none;
  color: var(--white);
  font-size: 1.2rem;
  width: 40px; height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,.3); }
.lightbox-caption { color: rgba(255,255,255,.7); font-size: .9rem; margin-top: 12px; }

/* ======== FOOTER ======== */
.footer {
  background: var(--dark);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}
.footer-brand i { color: var(--primary); font-size: 1.5rem; }
.footer-tagline { color: rgba(255,255,255,.45); font-size: .88rem; margin-bottom: 24px; }
.footer-socials { display: flex; gap: 10px; }
.social-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--white);
  transition: all var(--transition);
}
.social-btn.whatsapp { background: #25D366; }
.social-btn.whatsapp:hover { background: #1dbd5b; transform: translateY(-3px); }
.social-btn.tg { background: #2AABEE; }
.social-btn.tg:hover { background: #1a9bd6; transform: translateY(-3px); }
.social-btn.vk { background: #4680C2; }
.social-btn.vk:hover { background: #3a6fae; transform: translateY(-3px); }
.footer-col h4 { color: var(--white); font-size: .9rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,.55); font-size: .9rem; }
.footer-col ul li i { color: var(--primary); }
.footer-col p { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,.55); font-size: .9rem; margin-bottom: 8px; }
.footer-col p i { color: var(--primary); flex-shrink: 0; }
.footer-col p a { color: rgba(255,255,255,.65); }
.footer-col p a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  text-align: center;
  color: rgba(255,255,255,.35);
  font-size: .85rem;
}

/* ======== WHATSAPP FLOAT ======== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px; height: 56px;
  background: #25D366;
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  z-index: 900;
  transition: all var(--transition);
}
.whatsapp-float:hover { transform: scale(1.12); box-shadow: 0 6px 30px rgba(37,211,102,.5); }

/* ======== ANIMATE ON SCROLL ======== */
[data-aos] { opacity: 0; transform: translateY(20px); transition: opacity .5s ease, transform .5s ease; }
[data-aos].visible { opacity: 1; transform: translateY(0); }
[data-aos][data-aos-delay="100"] { transition-delay: .1s; }
[data-aos][data-aos-delay="200"] { transition-delay: .2s; }
[data-aos][data-aos-delay="300"] { transition-delay: .3s; }

/* ======== RESPONSIVE ======== */
@media (max-width: 1024px) {
  .about-layout { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { display: none; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  .project-layout { grid-template-columns: 1fr; }
  .project-sidebar { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand-col { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .navbar-menu {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--dark);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    z-index: 999;
  }
  .navbar-menu.open { display: flex; }
  .navbar-menu a { font-size: 1.2rem; padding: 14px 28px; }
  .navbar-toggler { display: block; z-index: 1001; }
  .section { padding: 64px 0; }
  .hero-content { padding: 60px 24px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .process-steps { flex-direction: column; align-items: stretch; }
  .process-arrow { display: none; }
  .process-step { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 28px 20px; }
  .sidebar-cta .btn { font-size: .85rem; }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .videos-grid { grid-template-columns: 1fr; }
}

/* ======== TECH REVIEW PROJECT PAGE ======== */
.tech-hero .page-hero-badge {
  margin-bottom: 14px;
}

.tech-hero-subtitle {
  color: rgba(255, 255, 255, 0.82);
  max-width: 720px;
  font-size: 1.05rem;
}

.tech-article-wrap {
  background: #f2f5f9;
}

.tech-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.tech-sidebar {
  position: sticky;
  top: 98px;
}

.tech-toc-box,
.tech-sidebar-cta {
  background: var(--white);
  border-radius: 14px;
  border: 1px solid #dde5ef;
  box-shadow: 0 12px 28px rgba(15, 25, 35, 0.07);
}

.tech-toc-box {
  padding: 20px;
  margin-bottom: 14px;
}

.tech-toc-box h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  margin-bottom: 12px;
}

.tech-toc {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tech-toc a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: #30445a;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: background .2s ease, color .2s ease;
}

.tech-toc a:hover {
  background: #eef4fb;
  color: #0f2f50;
}

.tech-sidebar-cta {
  background: linear-gradient(170deg, #132235 0%, #1f3854 100%);
  border: none;
  padding: 20px;
}

.tech-sidebar-cta h4 {
  color: var(--white);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.tech-sidebar-cta p {
  color: rgba(255,255,255,.74);
  font-size: .9rem;
  margin-bottom: 14px;
}

.tech-sidebar-cta .btn {
  margin-top: 8px;
}

.tech-article {
  background: var(--white);
  border: 1px solid #dde5ef;
  border-radius: 16px;
  box-shadow: 0 14px 32px rgba(15, 25, 35, 0.08);
  padding: 28px;
}

.tech-section {
  margin-bottom: 34px;
  scroll-margin-top: 100px;
}

.tech-section:last-child {
  margin-bottom: 0;
}

.tech-section h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 1.45rem;
  line-height: 1.3;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e7edf4;
}

.tech-section h2 span {
  color: var(--primary);
  font-weight: 800;
}

.tech-lead {
  font-size: 1.05rem;
  color: #2f465e;
  margin-bottom: 16px;
}

.tech-spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.tech-spec-item {
  padding: 14px;
  border-radius: 12px;
  background: #f5f8fc;
  border: 1px solid #e3ebf5;
}

.tech-spec-item small {
  display: block;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .7px;
  color: #68809b;
  margin-bottom: 6px;
}

.tech-spec-item strong {
  color: #1d3147;
  font-size: .97rem;
}

.tech-check-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.tech-check-list li {
  background: #f8fbff;
  border: 1px solid #e3ebf5;
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #2d455f;
}

.tech-check-list i {
  color: #1b8c48;
  margin-top: 2px;
}

.tech-article .project-back {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.tech-article .gallery-grid {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.tech-article .videos-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

@media (max-width: 1024px) {
  .tech-layout {
    grid-template-columns: 1fr;
  }

  .tech-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .tech-article {
    padding: 20px;
  }

  .tech-section h2 {
    font-size: 1.2rem;
  }

  .tech-article .gallery-grid,
  .tech-article .videos-grid {
    grid-template-columns: 1fr;
  }
}