/* ================================
   NABHT-Technics — Global Styles
   ================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --primary: #0F2D52;
  --primary-mid: #1A4A8A;
  --accent: #1A7AE8;
  --accent-light: #56A8F5;
  --accent-glow: rgba(26, 122, 232, 0.25);
  --bg: #ffffff;
  --bg-alt: #F7F9FC;
  --bg-card: #ffffff;
  --text: #0D1B2A;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --border-light: rgba(226, 232, 240, 0.6);
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(15, 45, 82, 0.07);
  --shadow: 0 8px 30px rgba(15, 45, 82, 0.10);
  --shadow-lg: 0 20px 60px rgba(15, 45, 82, 0.15);
  --shadow-accent: 0 8px 30px rgba(26, 122, 232, 0.3);
  --font: 'Inter', system-ui, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* ================================
   GRADIENT TEXT
   ================================ */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================
   BUTTONS
   ================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition);
}
.btn:hover::after { background: rgba(255,255,255,0.08); }

.btn--primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary-mid) 100%);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(26, 122, 232, 0.4);
}
.btn--primary:active { transform: translateY(0); }

.btn--outline {
  background: rgba(255,255,255,0.12);
  border: 1.5px solid rgba(255,255,255,0.4);
  color: #fff;
  backdrop-filter: blur(8px);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-2px);
}

.btn--outline-dark {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
  padding: 15px 30px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
}
.btn--outline-dark:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn--full { width: 100%; }

/* ================================
   SECTION HEADERS
   ================================ */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(26,122,232,0.1) 0%, rgba(86,168,245,0.1) 100%);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid rgba(26,122,232,0.2);
  margin-bottom: 16px;
}
.section-tag::before { content: '●'; font-size: 0.5rem; }

.section-header { text-align: center; margin-bottom: 64px; }
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-desc { color: var(--text-muted); font-size: 1.05rem; max-width: 520px; margin: 0 auto; line-height: 1.7; }

/* ================================
   ANIMATIONS
   ================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}
@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

[data-aos] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1), transform 0.65s cubic-bezier(0.4,0,0.2,1);
}
[data-aos].visible { opacity: 1; transform: translateY(0); }
[data-aos]:nth-child(2) { transition-delay: 0.12s; }
[data-aos]:nth-child(3) { transition-delay: 0.24s; }
[data-aos]:nth-child(4) { transition-delay: 0.36s; }

/* ================================
   HEADER
   ================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: all var(--transition);
  padding: 8px 0;
}
.header.scrolled,
.header--solid {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  padding: 4px 0;
}
.header.scrolled .logo,
.header--solid .logo { color: var(--primary); }
.header.scrolled .nav__link,
.header--solid .nav__link { color: var(--text-muted); }
.header.scrolled .nav__link:hover,
.header--solid .nav__link:hover { color: var(--primary); }
.header.scrolled .nav__link.active,
.header--solid .nav__link.active { color: var(--accent); font-weight: 600; }
.header.scrolled .burger span,
.header--solid .burger span { background: var(--primary); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  letter-spacing: -0.02em;
  transition: color var(--transition);
}
.logo__icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(26,122,232,0.35);
}
.logo__img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 50%;
  flex-shrink: 0;
}
.logo__text span { color: var(--accent); }
.header.scrolled .logo__text span,
.header--solid .logo__text span { color: var(--accent); }

.nav { display: flex; align-items: center; gap: 6px; }
.nav__link {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.nav__link:hover { color: #fff; background: rgba(255,255,255,0.1); }

.nav__link--cta {
  background: linear-gradient(135deg, var(--accent), var(--primary-mid));
  color: #fff !important;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(26,122,232,0.35);
}
.nav__link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,122,232,0.45);
  background: linear-gradient(135deg, var(--accent-light), var(--accent)) !important;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
}
.burger span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: all 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); }

/* ================================
   FOOTER
   ================================ */
.footer {
  background: var(--primary);
  background: linear-gradient(160deg, #0A1F3A 0%, #0F2D52 60%, #1A4A8A 100%);
  color: rgba(255,255,255,0.65);
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(26,122,232,0.12) 0%, transparent 70%);
  top: -100px; right: -100px;
  pointer-events: none;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  padding: 72px 28px 56px;
  position: relative;
}
.footer__brand .logo { margin-bottom: 16px; }
.footer__brand p { font-size: 0.87rem; line-height: 1.7; max-width: 260px; }

.footer__links { display: flex; flex-direction: column; gap: 12px; }
.footer__links strong { color: #fff; font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 4px; }
.footer__links a { font-size: 0.87rem; transition: color var(--transition); }
.footer__links a:hover { color: var(--accent-light); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.footer__bottom p { font-size: 0.82rem; }
.footer__bottom strong { color: var(--accent-light); }

/* ================================
   WHATSAPP FLOATING BUTTON
   ================================ */
@keyframes wa-shake {
  0%, 80%, 100% { transform: rotate(0deg) scale(1); }
  82%           { transform: rotate(-12deg) scale(1.1); }
  85%           { transform: rotate(12deg) scale(1.1); }
  88%           { transform: rotate(-10deg) scale(1.1); }
  91%           { transform: rotate(8deg) scale(1.1); }
  94%           { transform: rotate(-5deg) scale(1.05); }
  97%           { transform: rotate(3deg) scale(1.05); }
}
@keyframes wa-ping {
  0%   { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}

.wa-btn {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
  animation: wa-shake 4s ease-in-out infinite;
}

.wa-btn__icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, #25D366, #128C7E);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
  position: relative;
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}
.wa-btn:hover .wa-btn__icon {
  transform: scale(1.08);
  box-shadow: 0 10px 32px rgba(37, 211, 102, 0.6);
}

/* Ping ring */
.wa-btn__icon::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.4);
  animation: wa-ping 2s ease-out infinite;
}

.wa-btn__icon svg {
  width: 32px; height: 32px;
  fill: #fff;
  position: relative;
  z-index: 1;
}

.wa-btn__bubble {
  background: #fff;
  border-radius: 16px 16px 16px 4px;
  padding: 10px 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  border: 1px solid rgba(0,0,0,0.06);
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}
.wa-btn:hover .wa-btn__bubble {
  opacity: 1;
  transform: translateX(0);
}
.wa-btn__bubble strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 2px;
}
.wa-btn__bubble span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .wa-btn { bottom: 20px; right: 20px; }
  .wa-btn__bubble { display: none; }
}

/* ================================
   RESPONSIVE
   ================================ */
@media (max-width: 640px) {
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 12px; right: 12px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
  }
  .nav.open .nav__link { color: var(--text-muted); }
  .nav.open .nav__link:hover { color: var(--primary); background: var(--bg-alt); }
  .nav.open .nav__link--cta { color: #fff !important; text-align: center; }
  .burger { display: flex; }
  .footer__inner { grid-template-columns: 1fr; gap: 36px; padding: 48px 28px 36px; }
}