/* ============================================
   Layout System
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow { max-width: 960px; }

.grid { display: grid; gap: var(--space-8); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex--center { align-items: center; justify-content: center; }
.flex--between { align-items: center; justify-content: space-between; }
.flex--col { flex-direction: column; }
.flex--gap-4 { gap: var(--space-4); }
.flex--gap-8 { gap: var(--space-8); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-4); }
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  z-index: var(--z-fixed);
  transition: all var(--transition);
}
.header--scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: var(--shadow-md);
}
.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--gray-900);
}
.header__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: var(--text-lg);
  font-family: var(--font-heading);
}
.header__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.025em;
}
.header__logo-text span {
  color: var(--accent);
}

.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav__link {
  padding: var(--space-2) var(--space-4);
  color: var(--gray-600);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
}
.nav__link:hover,
.nav__link--active {
  color: var(--primary);
  background: var(--gray-50);
}
.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: var(--radius-full);
}

.nav__cta {
  margin-left: var(--space-4);
  padding: var(--space-2) var(--space-6);
  background: var(--accent);
  color: var(--white) !important;
  font-weight: 600;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  transition: all var(--transition);
  text-decoration: none;
}
.nav__cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.4);
  color: var(--white) !important;
}

/* Dropdown */
.nav__dropdown {
  position: relative;
}
.nav__dropdown-content {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 220px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}
.nav__dropdown:hover .nav__dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav__dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-6);
  color: var(--gray-700);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav__dropdown-item:hover {
  background: var(--gray-50);
  color: var(--primary);
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .nav__toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6);
    gap: var(--space-2);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 100;
    overflow-y: auto;
  }
  .nav.open { transform: translateX(0); }
  .nav__link {
    font-size: var(--text-lg);
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
  }
  .nav__cta {
    margin-left: 0;
    margin-top: var(--space-4);
    text-align: center;
    padding: var(--space-4);
  }
  .nav__dropdown-content {
    position: static;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding-left: var(--space-4);
    background: transparent;
  }
  .nav__dropdown-item {
    font-size: var(--text-base);
    padding: var(--space-2) var(--space-4);
  }
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-16) 0 var(--space-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer__brand p { color: var(--gray-400); margin-top: var(--space-4); font-size: var(--text-sm); line-height: 1.8; }
.footer__title {
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-6);
}
.footer__links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
  text-decoration: none;
}
.footer__links a:hover { color: var(--white); }
.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
}
.footer__contact-item svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.footer__bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
}
.footer__socials { display: flex; gap: var(--space-4); }
.footer__socials a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.footer__socials a:hover { background: var(--accent); color: var(--white); }

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
}

/* ============================================
   Main content offset
   ============================================ */
.main { margin-top: var(--header-height); }