/* ============================================================
   BLTECH — Modern Tech CSS
   Colors: #003F51 (primary dark teal), #00B4D8 (accent cyan)
   ============================================================ */

:root {
  --primary: #003F51;
  --primary-light: #005670;
  --accent: #00B4D8;
  --accent-2: #0077A8;
  --dark: #050D12;
  --dark-2: #0A1A22;
  --dark-3: #0F2633;
  --surface: #0D1F2D;
  --surface-2: #122535;
  --border: rgba(0, 180, 216, 0.15);
  --border-strong: rgba(0, 180, 216, 0.35);
  --text: #C8D8E4;
  --text-muted: #6B8899;
  --text-light: #E8F4F8;
  --white: #FFFFFF;
  --success: #00D9A0;
  --error: #FF4B6E;
  --font-display: 'Exo 2', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'DM Sans', sans-serif;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 30px rgba(0, 180, 216, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- RESET & BASE ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--dark);
  color: var(--text);
  overflow-x: hidden;
  font-size: 16px;
  line-height: 1.7;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ---- PRELOADER ---- */
#preloader {
  position: fixed; inset: 0;
  background: var(--dark);
  z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; }
.preloader-inner { text-align: center; }
.preloader-logo {
  font-family: var(--font-display);
  font-size: 2.5rem; font-weight: 800;
  color: var(--white);
  letter-spacing: 4px;
  margin-bottom: 24px;
}
.preloader-logo span { color: var(--accent); }
.preloader-bar {
  width: 200px; height: 3px;
  background: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}
.preloader-progress {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  border-radius: 2px;
  animation: loadBar 1.8s ease forwards;
}
@keyframes loadBar { to { width: 100%; } }

/* ---- HEADER ---- */
#header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
#header.scrolled {
  background: rgba(5, 13, 18, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.header-inner {
  display: flex; align-items: center;
  padding: 16px 0;
  gap: 32px;
}
.logo-img { width: 90px; height: auto; filter: brightness(0) invert(1); }
#navmenu { margin-left: auto; }
#navmenu ul { display: flex; gap: 4px; align-items: center; }
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem; letter-spacing: 1px;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  text-transform: uppercase;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
}
.header-cta {
  font-family: var(--font-mono);
  font-size: 0.75rem; letter-spacing: 1px;
  color: var(--dark);
  background: var(--accent);
  padding: 10px 20px;
  border-radius: var(--radius);
  display: flex; align-items: center; gap: 8px;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
  text-transform: uppercase;
  font-weight: 700;
}
.header-cta:hover { background: var(--white); transform: translateY(-1px); }
.mobile-menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 8px;
}
.mobile-menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--accent); border-radius: 1px;
  transition: var(--transition);
}

/* ---- MOBILE NAV ---- */
.mobile-nav-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(5, 13, 18, 0.97);
  backdrop-filter: blur(20px);
  z-index: 1100;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 24px;
}
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-overlay ul { text-align: center; }
.mobile-nav-overlay li { margin: 12px 0; }
.mobile-nav-overlay a {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}
.mobile-nav-overlay a:hover { color: var(--accent); }
.mobile-nav-close {
  position: absolute; top: 24px; right: 24px;
  background: none; border: none;
  color: var(--text-muted); font-size: 1.5rem;
  cursor: pointer; transition: color var(--transition);
}
.mobile-nav-close:hover { color: var(--accent); }

/* ---- SECTION COMMONS ---- */
section {
  padding: 100px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--accent);
  letter-spacing: 2px;
  display: block; margin-bottom: 12px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800; color: var(--text-light);
  line-height: 1.2;
}
.section-header h2 span { color: var(--accent); }
.section-header p {
  color: var(--text-muted);
  max-width: 560px; margin: 16px auto 0;
  font-size: 1.05rem;
}

/* ---- HERO ---- */
#hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  position: relative; overflow: hidden;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0, 180, 216, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 180, 216, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}
.hero-particles {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
.hero-content {
  max-width: 760px;
  position: relative; z-index: 1;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem; color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid var(--border-strong);
  padding: 8px 16px; border-radius: 100px;
  margin-bottom: 28px; letter-spacing: 1px;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent); border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(0,180,216,0.4); }
  50% { opacity: 0.8; transform: scale(1.1); box-shadow: 0 0 0 8px rgba(0,180,216,0); }
}
#hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 900; line-height: 1.05;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-highlight {
  background: linear-gradient(135deg, var(--accent), #00D4FF);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
#hero p {
  font-size: 1.15rem; color: var(--text-muted);
  max-width: 560px; margin-bottom: 40px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 80px; }
.btn-primary-bl {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-2));
  color: var(--white); font-family: var(--font-mono);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 1px;
  padding: 14px 28px; border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
  text-transform: uppercase;
}
.btn-primary-bl:hover {
  background: var(--accent);
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,180,216,0.3);
}
.btn-outline-bl {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--border-strong);
  color: var(--accent); font-family: var(--font-mono);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 1px;
  padding: 14px 28px; border-radius: var(--radius);
  transition: all var(--transition);
  text-transform: uppercase;
}
.btn-outline-bl:hover {
  background: rgba(0, 180, 216, 0.1);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.hero-stats {
  display: flex; gap: 0; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative; z-index: 1;
  backdrop-filter: blur(10px);
}
.stat-item {
  flex: 1; padding: 24px 20px;
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem; font-weight: 900;
  color: var(--accent);
  display: inline-block;
}
.stat-plus {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 900;
  color: var(--accent);
}
.stat-item p {
  font-size: 0.78rem; color: var(--text-muted);
  margin: 4px 0 0; letter-spacing: 0.5px;
}
.stat-divider {
  width: 1px; height: 60px;
  background: var(--border);
  flex-shrink: 0;
}
.hero-scroll-indicator {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 1.5s infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: top; opacity: 0; }
}

/* ---- ABOUT ---- */
#about { background: var(--dark-2); }
.about-img-wrapper {
  position: relative; display: inline-block;
  width: 100%; max-width: 480px;
}
.about-img {
  width: 100%; border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 40px;
  background: var(--surface);
}
.about-img-badge {
  position: absolute; top: -16px; right: -16px;
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
  color: var(--white);
  padding: 12px 18px; border-radius: var(--radius);
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; font-weight: 600;
  box-shadow: var(--shadow);
}
.about-experience-badge {
  position: absolute; bottom: -16px; left: 20px;
  background: var(--dark);
  border: 1px solid var(--border-strong);
  padding: 14px 20px; border-radius: var(--radius);
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow);
}
.exp-number {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 900; color: var(--accent);
}
.exp-text { font-size: 0.78rem; color: var(--text-muted); line-height: 1.3; }
.about-intro {
  font-size: 1.1rem; color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}
.about-content p { color: var(--text-muted); margin-bottom: 28px; }
.values-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-bottom: 28px;
}
.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex; gap: 14px; align-items: flex-start;
  transition: border-color var(--transition), transform var(--transition);
}
.value-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.value-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.1rem;
}
.value-card h5 {
  font-family: var(--font-display);
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-light); margin-bottom: 4px;
}
.value-card p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }
.mission-quote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: rgba(0, 180, 216, 0.05);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic; color: var(--text-muted);
  font-size: 0.95rem;
}
.mission-quote .bi-quote {
  font-size: 1.5rem; color: var(--accent);
  display: block; margin-bottom: 8px;
}

/* ---- SERVICES ---- */
#services {
  background: var(--dark);
  overflow: hidden;
}
.services-bg-decor {
  position: absolute; top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,63,81,0.3) 0%, transparent 70%);
  pointer-events: none;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  height: 100%;
  position: relative; overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.service-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}
.service-card:hover::before { opacity: 1; }
.service-card--featured {
  background: linear-gradient(135deg, var(--surface), var(--dark-3));
  border-color: var(--border-strong);
}
.service-card-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 20px;
}
.service-icon {
  width: 52px; height: 52px;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--accent);
  border: 1px solid rgba(0, 180, 216, 0.2);
}
.service-number {
  font-family: var(--font-mono);
  font-size: 0.75rem; color: var(--text-muted);
  letter-spacing: 2px;
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem; font-weight: 700;
  color: var(--text-light);
  margin-bottom: 12px;
}
.service-card > p {
  font-size: 0.88rem; color: var(--text-muted);
  margin-bottom: 20px; line-height: 1.7;
}
.service-features { margin-bottom: 24px; }
.service-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.85rem; color: var(--text-muted);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.service-features li:last-child { border-bottom: none; }
.service-features .bi-check2 { color: var(--accent); }
.service-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--accent); letter-spacing: 1px; font-weight: 700;
  text-transform: uppercase;
  transition: gap var(--transition), color var(--transition);
}
.service-link:hover { gap: 14px; }

/* ---- WHY US ---- */
#why-us { background: var(--dark-2); }
.why-tabs {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.why-tab-nav {
  display: flex; overflow-x: auto;
  border-bottom: 1px solid var(--border);
}
.why-tab-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 24px;
  background: none; border: none; cursor: pointer;
  color: var(--text-muted);
  font-family: var(--font-body); font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition);
  white-space: nowrap;
  flex: 1; justify-content: center;
}
.why-tab-btn i { font-size: 1.1rem; color: var(--text-muted); transition: color var(--transition); }
.why-tab-btn.active, .why-tab-btn:hover {
  color: var(--text-light);
  border-bottom-color: var(--accent);
  background: rgba(0, 180, 216, 0.05);
}
.why-tab-btn.active i, .why-tab-btn:hover i { color: var(--accent); }
.why-tab-content { padding: 40px; }
.why-pane { display: none; }
.why-pane.active { display: block; }
.why-pane h3 {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 700;
  color: var(--text-light); margin-bottom: 16px;
}
.why-pane p { color: var(--text-muted); margin-bottom: 24px; line-height: 1.8; }
.feature-list { display: flex; flex-direction: column; gap: 10px; }
.feature-item {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.9rem; color: var(--text);
}
.feature-item .bi-check2-circle { color: var(--accent); font-size: 1.1rem; flex-shrink: 0; }
.why-img {
  max-width: 100%; border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 20px; background: var(--surface);
}

/* ---- PORTFOLIO ---- */
#portfolio { background: var(--dark); }
.portfolio-filters {
  display: flex; gap: 8px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 40px;
}
.pf-btn {
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--text-muted); letter-spacing: 1px;
  padding: 8px 18px; border-radius: 100px;
  border: 1px solid var(--border);
  background: none; cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
}
.pf-btn:hover, .pf-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.portfolio-item { transition: opacity var(--transition), transform var(--transition); }
.portfolio-item.hidden { opacity: 0; transform: scale(0.9); pointer-events: none; height: 0; overflow: hidden; }
.portfolio-card {
  position: relative; border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
  background: var(--surface);
}
.portfolio-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s ease;
}
.portfolio-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(5,13,18,0.95) 0%, rgba(5,13,18,0.6) 60%, transparent 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px;
  opacity: 0; transition: opacity var(--transition);
}
.portfolio-card:hover .portfolio-overlay { opacity: 1; }
.portfolio-card:hover img { transform: scale(1.05); }
.portfolio-overlay h4 {
  font-family: var(--font-display);
  font-size: 1rem; font-weight: 700; color: var(--white);
  margin-bottom: 4px;
}
.portfolio-overlay p { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 16px; }
.portfolio-actions { display: flex; gap: 12px; }
.portfolio-actions a, .portfolio-zoom {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
}
.portfolio-actions a:hover, .portfolio-zoom:hover {
  background: var(--accent); border-color: var(--accent);
  transform: scale(1.1);
}

/* ---- CLIENTS ---- */
#clients { background: var(--dark-2); }
.clients-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--text-muted);
  letter-spacing: 2px; text-transform: uppercase;
  text-align: center; margin-bottom: 24px;
}
.clients-grid {
  display: flex; flex-wrap: wrap;
  justify-content: center; gap: 20px;
}
.client-logo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), transform var(--transition);
  min-width: 180px;
}
.client-logo-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.client-logo-card img {
  max-width: 180px; max-height: 100px;
  object-fit: contain; filter: brightness(0.8) grayscale(0.3);
  transition: filter var(--transition);
}
.client-logo-card:hover img { filter: brightness(1) grayscale(0); }
.partners-grid {
  display: flex; flex-wrap: wrap;
  justify-content: center; gap: 16px;
}
.partner-badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), transform var(--transition);
}
.partner-badge:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.partner-badge img {
  max-width: 100px; max-height: 50px;
  object-fit: contain; filter: brightness(0.7) grayscale(0.4);
  transition: filter var(--transition);
}
.partner-badge:hover img { filter: brightness(1) grayscale(0); }

/* ---- CONTACT ---- */
#contact { background: var(--dark); overflow: hidden; }
.contact-bg-decor {
  position: absolute; bottom: -200px; left: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,63,81,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-info-item {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: border-color var(--transition);
}
.contact-info-item:hover { border-color: var(--border-strong); }
.contact-info-icon {
  width: 46px; height: 46px; flex-shrink: 0;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.2rem;
}
.contact-info-item h5 {
  font-family: var(--font-display);
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-light); margin-bottom: 6px;
}
.contact-info-item p { font-size: 0.88rem; color: var(--text-muted); margin: 0 0 4px; }
.contact-wa-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.88rem; color: var(--success);
  transition: opacity var(--transition);
}
.contact-wa-link:hover { opacity: 0.8; }
.contact-socials {
  display: flex; gap: 12px; padding-top: 8px;
}
.social-btn {
  width: 44px; height: 44px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1.1rem;
  transition: all var(--transition);
}
.social-btn:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
  transform: translateY(-2px);
}
.social-btn--wa:hover { border-color: var(--success); color: var(--success); }

/* CONTACT FORM */
.contact-form-wrapper {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-alert {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 16px 20px; border-radius: var(--radius);
  margin-bottom: 24px; font-size: 0.9rem;
}
.form-alert i { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.form-alert strong { display: block; margin-bottom: 2px; }
.form-alert p { margin: 0; opacity: 0.8; }
.form-alert--success { background: rgba(0, 217, 160, 0.1); border: 1px solid rgba(0,217,160,0.3); color: var(--success); }
.form-alert--error { background: rgba(255, 75, 110, 0.1); border: 1px solid rgba(255,75,110,0.3); color: var(--error); }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
  font-size: 0.82rem; font-weight: 600;
  color: var(--text-muted); letter-spacing: 0.5px;
  text-transform: uppercase; font-family: var(--font-mono);
}
.form-input {
  width: 100%;
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-light);
  padding: 12px 16px;
  font-family: var(--font-body); font-size: 0.93rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}
textarea.form-input { resize: vertical; min-height: 130px; }
select.form-input option { background: var(--dark-2); }
.recaptcha-note {
  display: block; margin-top: 8px;
  font-size: 0.78rem; color: var(--text-muted);
  font-family: var(--font-mono);
}
.btn-submit {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  width: 100%; padding: 14px 28px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-2));
  color: var(--white); font-family: var(--font-mono);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 1px;
  border: none; border-radius: var(--radius);
  cursor: pointer; text-transform: uppercase;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.btn-submit::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  opacity: 0; transition: opacity var(--transition);
}
.btn-submit:hover::before { opacity: 1; }
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,180,216,0.3); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-submit span, .btn-submit i { position: relative; z-index: 1; }
.spin { animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- FOOTER ---- */
#footer {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  padding: 70px 0 30px;
  position: relative; overflow: hidden;
}
.footer-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0, 180, 216, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 180, 216, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  position: relative;
}
.footer-logo { width: 90px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p {
  font-size: 0.88rem; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 20px;
}
.footer-socials { display: flex; gap: 10px; }
.footer-socials a {
  width: 38px; height: 38px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1rem;
  transition: all var(--transition);
}
.footer-socials a:hover { border-color: var(--accent); color: var(--accent); }
.footer-links-col h5, .footer-contact-col h5 {
  font-family: var(--font-mono);
  font-size: 0.78rem; color: var(--text-light);
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-links-col ul li { margin-bottom: 10px; }
.footer-links-col a {
  font-size: 0.88rem; color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links-col a:hover { color: var(--accent); }
.footer-contact-col p {
  font-size: 0.88rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
}
.footer-contact-col .bi { color: var(--accent); }
.footer-cta-btn {
  display: inline-flex; align-items: center;
  margin-top: 16px; padding: 10px 20px;
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--accent); font-family: var(--font-mono);
  font-size: 0.78rem; letter-spacing: 1px; font-weight: 700;
  text-transform: uppercase;
  transition: all var(--transition);
}
.footer-cta-btn:hover { background: var(--accent); color: var(--dark); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  position: relative;
}
.footer-bottom p { font-size: 0.83rem; color: var(--text-muted); }
.footer-tech { display: flex; align-items: center; gap: 6px; }
.footer-tech .bi-heart-fill { color: var(--accent); }

/* ---- WHATSAPP FLOAT ---- */
#whatsapp-float {
  position: fixed; right: 24px; bottom: 80px;
  width: 58px; height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform var(--transition), box-shadow var(--transition);
}
#whatsapp-float:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
}
#whatsapp-float img { width: 32px; height: 32px; }
.wa-pulse {
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(37, 211, 102, 0.4);
  animation: waPulse 2s infinite;
}
@keyframes waPulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.4); opacity: 0; }
}

/* ---- SCROLL TOP ---- */
#scroll-top {
  position: fixed; right: 24px; bottom: 20px;
  width: 40px; height: 40px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1rem;
  z-index: 998;
  transition: all var(--transition);
  opacity: 0; pointer-events: none;
}
#scroll-top.visible { opacity: 1; pointer-events: auto; }
#scroll-top:hover {
  background: var(--accent); color: var(--dark);
  border-color: var(--accent);
}

/* ---- LIGHTBOX ---- */
.lightbox-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(10px);
  z-index: 9000;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.lightbox-overlay img {
  max-width: 90vw; max-height: 85vh;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  object-fit: contain;
}
.lightbox-close {
  position: absolute; top: 20px; right: 20px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 1rem;
  cursor: pointer; transition: all var(--transition);
}
.lightbox-close:hover { background: var(--error); border-color: var(--error); }

/* ---- PARTICLE ---- */
.particle {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.3; }
  100% { transform: translateY(-100px) translateX(var(--dx, 0)); opacity: 0; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  #navmenu { display: none; }
  .header-cta { display: none; }
  .mobile-menu-toggle { display: flex; }
  .hero-stats {
    flex-wrap: wrap;
    gap: 0;
  }
  .stat-item { flex: 1 0 50%; }
  .stat-divider:nth-child(4) { display: none; }
  .values-grid { grid-template-columns: 1fr; }
  .why-tab-btn span { display: none; }
  .why-tab-content { padding: 24px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .contact-form-wrapper { padding: 24px; }
}
@media (max-width: 480px) {
  section { padding: 70px 0; }
  .hero-actions { flex-direction: column; }
  .btn-primary-bl, .btn-outline-bl { text-align: center; justify-content: center; }
  .portfolio-grid { grid-template-columns: 1fr; }
}