/* === MAIN LAYOUT & GLOBAL STYLES === */
@import url('variables.css');
@import url('components.css');
@import url('sections/faq.css');
@import url('sections/contact.css');
@import url('animations.css');

/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg-white);
  color: var(--color-text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
  line-height: 1.5;
}

/* CONTAINER */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* =========================
   HEADER / NAVBAR (clean)
   ========================= */

.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;

  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 24px 60px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  white-space: nowrap;
}

/* Logo */
.nav-logo img {
  height: 34px;
  display: block;
}

/* Center area (links + actions) */
.nav-center {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-grow: 1;
  margin-left: 60px;
}

/* Links */
.nav-links-group {
  display: flex;
  gap: 48px;
  margin: 0 auto;
}

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-main);
}

.nav-link::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  transform: translateY(-50%) scale(0);
  transition: transform 0.2s;
}

.nav-link:hover::before {
  transform: translateY(-50%) scale(1);
}

/* Dropdown (desktop hover) */
.nav-item-dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 1100;

  min-width: 240px;
  padding: 8px 0;

  background: #fff;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);

  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(10px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.dropdown-link {
  display: block;
  padding: 12px 20px;
  text-align: left;

  font-size: 14px;
  color: var(--color-text-sub);
  text-decoration: none;

  transition: background 0.2s, color 0.2s;
}

.dropdown-link:hover {
  background: #f8fafc;
  color: var(--color-primary);
}

.nav-arrow {
  display: inline-block;
  font-size: 10px;
  margin-left: 4px;
  transition: transform 0.2s;
}

@media (min-width: 769px) {
  .nav-item-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .nav-item-dropdown:hover .nav-arrow {
    transform: rotate(180deg);
  }
}

/* Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-phone {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-main);
}

.btn-nav-primary {
  padding: 10px 24px;
  border-radius: 50px;

  background: transparent;
  border: 1px solid var(--color-border);

  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-main);

  cursor: pointer;
  transition: 0.2s;
}

.btn-nav-primary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Mobile burger */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;

  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;

  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--color-text-main);
  transition: 0.3s;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* =========================
   Responsive
   ========================= */

@media (max-width: 768px) {
  .nav-bar {
    padding: 16px 20px;
  }
}

@media (max-width: 1024px) {
  .nav-bar {
    padding: 16px 20px;
  }

  /* Fullscreen mobile menu */
  .nav-center {
    position: fixed;
    top: 0;
    left: 0;

    width: 100%;
    height: 100vh;
    margin-left: 0;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 60px;

    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 999;

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
  }

  .nav-center.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-links-group {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .nav-link {
    display: block;
    margin: 0;

    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-main);
  }

  /* Mobile dropdown */
  .nav-center .nav-item-dropdown {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .nav-center .dropdown-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
  }

  .nav-center .dropdown-menu {
    position: static;
    width: 100%;
    margin-top: 12px;

    display: none;
    opacity: 1;
    visibility: visible;
    transform: none !important;

    background: #f1f5f9;
    border: none;
    border-radius: 12px;
    box-shadow: none;
    padding: 8px 0;
  }

  .nav-center .nav-item-dropdown.active .dropdown-menu {
    display: block;
    animation: slideDown 0.3s ease-out;
  }

  .nav-center .dropdown-link {
    display: block;
    padding: 14px;
    font-size: 18px;
    color: var(--color-text-sub);
  }

  .nav-actions {
    width: 100%;
    flex-direction: column;
    justify-content: center;
    gap: 24px;
  }

  .nav-phone {
    display: block;
    font-size: 20px;
    color: var(--color-text-sub);
  }

  .btn-nav-primary {
    padding: 16px 32px;
    font-size: 16px;
    width: auto;
  }

  .mobile-menu-toggle {
    display: flex;
  }
}


/* =========================
   FOOTER
   ========================= */

.footer {
  padding: 40px 60px;
  background: #ffffff;
  border-top: 1px solid #e2e8f0;
  position: relative;
  display: flex;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;

  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 16px;

  font-size: 14px;
  color: var(--color-text-sub);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text-main);
}

/* =========================
   Footer Mobile
   ========================= */

@media (max-width: 768px) {
  .footer {
    padding: 40px 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
}


/* === PAGE-SPECIFIC STYLES MOVED TO RESPECTIVE PAGE CSS FILES === */
/* Hero, Stats, About, Core Elements, Solutions, Process, Projects -> pages/home.css */
/* Platform-specific -> pages/platform.css */
/* Construction-specific -> pages/construction.css */
/* Equipment-specific -> pages/equipment.css */

/* CONTAINER UTILS (Shared across pages) */
.container-center {
  max-width: 1200px;
  margin: 0 auto;
}

/* RESPONSIVE */
@media (max-width: 1024px) {

  /* Grid layouts collapse to single column */
  .container-about,
  .core-grid,
  .contact-container-grid,
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-grid {
    gap: 24px;
    grid-template-columns: 1fr 1fr;
  }
}

#data-network {
  position: fixed;
}