/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-full);
  font-weight: 600; font-size: 15px;
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease,
              transform 0.25s ease, border-color 0.25s ease;
  white-space: nowrap; cursor: pointer;
}
.btn--primary {
  background: var(--primary); color: #fff;
  border: 1.5px solid var(--primary);
  box-shadow: 0 1px 3px rgba(14,116,144,0.2);
}
.btn--primary:hover {
  background: #fff; color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(14,116,144,0.25);
}
.btn--primary:active {
  background: #fff; color: var(--primary);
  border-color: var(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 3px rgba(14,116,144,0.2);
}
.btn--outline {
  border: 1.5px solid var(--border); color: var(--text);
  background: transparent;
}
.btn--outline:hover {
  border-color: var(--primary); color: var(--primary);
  background: rgba(14,116,144,0.04);
}
.btn--outline:active {
  transform: scale(0.97); color: var(--primary-dark);
}
.btn--ghost {
  border: 1.5px solid rgba(255,255,255,0.25); color: #fff;
  background: transparent;
}
.btn--ghost:hover {
  border-color: rgba(255,255,255,0.5); color: #fff;
  background: rgba(255,255,255,0.08);
}
.btn--ghost:active {
  transform: scale(0.97); color: #fff;
  background: rgba(255,255,255,0.12);
}
.btn--white {
  background: #fff; color: var(--secondary);
  border: 1.5px solid #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.btn--white:hover {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(14,116,144,0.3);
}
.btn--white:active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}
.btn--full { width: 100%; justify-content: center; }

/* ---- Cards ---- */
.card {
  background: var(--bg);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.card__icon {
  width: 48px; height: 48px; margin-bottom: 20px;
  color: var(--primary);
}
.card__title {
  font-size: 18px; font-weight: 600; color: var(--text);
  margin-bottom: 10px;
}
.card__text {
  font-size: 15px; color: var(--text-muted); line-height: 1.7;
}
.card__link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 600; color: var(--primary);
  transition: gap var(--transition);
}
.card__link:hover { gap: 10px; }

/* ---- Tags ---- */
.tag {
  display: inline-block;
  padding: 5px 12px; border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1px;
}
.tag--teal {
  background: var(--primary-light); color: var(--primary);
}
.tag--outline {
  border: 1px solid var(--border); color: var(--text-muted);
  background: transparent;
}
.system-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.system-tag {
  padding: 5px 12px; border-radius: var(--radius-full);
  font-size: 12px; font-weight: 500;
  background: var(--bg-alt); color: var(--text-muted);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  transition: color var(--transition), border-color var(--transition);
}
.system-tag:hover {
  border-color: var(--primary); color: var(--primary);
}

/* ---- Navigation ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height); z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border-soft);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.nav--scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border);
}
.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: var(--secondary);
}
.nav__logo img { border-radius: 3px; }
.nav__links {
  display: flex; align-items: center; gap: 36px;
}
.nav__link {
  font-size: 15px; font-weight: 500; color: var(--text-muted);
  position: relative; transition: color var(--transition);
}
.nav__link:hover, .nav__link--active {
  color: var(--secondary);
}
.nav__link--active::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--secondary); border-radius: 1px;
}
.nav__cta { margin-left: 12px; padding: 10px 24px; font-size: 14px; }

/* Services dropdown */
.nav__dropdown { position: relative; }
.nav__dropdown-toggle {
  display: flex; align-items: center; gap: 4px;
  font-size: 15px; font-weight: 500; color: var(--text-muted);
  position: relative; transition: color var(--transition);
  cursor: pointer;
}
.nav__dropdown-toggle:hover, .nav__dropdown-toggle--active {
  color: var(--secondary);
}
.nav__dropdown-toggle--active::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--secondary); border-radius: 1px;
}
.nav__dropdown-arrow {
  width: 12px; height: 12px;
  transition: transform 0.25s ease;
}
.nav__dropdown:hover .nav__dropdown-arrow { transform: rotate(180deg); }
.nav__dropdown-menu {
  position: absolute; top: calc(100% + 16px); left: 50%; transform: translateX(-50%);
  min-width: 260px; background: #fff; border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); border: 1px solid var(--border);
  padding: 8px 0; opacity: 0; visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 1001;
}
.nav__dropdown-menu::before {
  content: ''; position: absolute; top: -6px; left: 50%;
  width: 12px; height: 12px; background: #fff;
  border-top: 1px solid var(--border); border-left: 1px solid var(--border);
  transform: translateX(-50%) rotate(45deg);
}
.nav__dropdown:hover .nav__dropdown-menu {
  opacity: 1; visibility: visible;
}
.nav__dropdown-menu a {
  display: block; padding: 10px 20px; font-size: 14px; font-weight: 500;
  color: var(--text-muted); transition: all 0.15s ease;
}
.nav__dropdown-menu a:hover {
  background: var(--bg-alt); color: var(--secondary);
}

/* Hamburger */
.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  width: 28px; padding: 4px 0; z-index: 1001;
}
.nav__hamburger span {
  display: block; width: 100%; height: 2px;
  background: var(--secondary);
  transition: all var(--transition);
}
.nav__hamburger--open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__hamburger--open span:nth-child(2) { opacity: 0; }
.nav__hamburger--open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.nav__mobile {
  display: none; position: fixed;
  top: 0; right: -100%; width: 100%; height: 100vh;
  background: var(--secondary);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 28px; transition: right var(--transition); z-index: 999;
}
.nav__mobile--open { right: 0; }
.nav__mobile a { font-size: 22px; font-weight: 600; color: #fff; }
.nav__mobile-sub {
  display: flex; flex-wrap: wrap; gap: 8px 10px;
  justify-content: center; margin-top: -12px; padding: 0 24px;
}
.nav__mobile-sub a {
  font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.5);
  padding: 4px 12px; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px;
}
.nav__mobile-sub a:hover {
  color: #fff; border-color: rgba(255,255,255,0.4);
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: flex; }
  .nav__inner { padding: 0 16px; }
  .nav__logo { font-size: 20px; }
}

/* ---- Footer ---- */
.footer {
  background: var(--secondary); color: #fff;
  padding: 80px 0 0;
  border-top: 3px solid var(--primary);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 60px;
}
.footer__brand p {
  margin-top: 16px;
  font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.7;
}
.footer__heading {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: rgba(255,255,255,0.35);
  margin-bottom: 20px;
}
.footer__link {
  display: block; font-size: 14px; color: rgba(255,255,255,0.6);
  margin-bottom: 12px; transition: color var(--transition);
}
.footer__link:hover { color: #fff; }
.footer__social {
  display: flex; gap: 16px; margin-top: 20px;
}
.footer__social a {
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}
.footer__social a:hover { color: #fff; }
.footer__contact-item {
  display: flex; gap: 12px; margin-bottom: 16px;
  font-size: 14px; color: rgba(255,255,255,0.6); align-items: flex-start;
}
.footer__contact-item svg { flex-shrink: 0; margin-top: 2px; color: rgba(255,255,255,0.35); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center; padding: 24px;
  max-width: var(--max-width); margin: 0 auto;
}
.footer__bottom p { font-size: 13px; color: rgba(255,255,255,0.3); }

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer { padding: 48px 0 0; }
}

/* ---- Forms ---- */
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 600;
  color: var(--text); margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 16px; color: var(--text);
  font-family: var(--font-sans);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(15,23,42,0.06);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-faint);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group--error input,
.form-group--error textarea { border-color: #DC2626; }
.error-message {
  display: none; font-size: 13px; color: #DC2626;
  margin-top: 6px;
}
.form-group--error .error-message { display: block; }

/* Page header */
.page-header {
  background: var(--bg-alt);
  padding: 140px 0 60px;
  border-bottom: 1px solid var(--border-soft);
}
.page-header h1 { margin-bottom: 12px; }
.page-header p { color: var(--text-muted); font-size: 18px; }
.breadcrumb {
  margin-bottom: 16px; font-size: 13px; letter-spacing: 0.3px;
}
.breadcrumb a { color: var(--text-faint); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--text-faint); margin: 0 8px; }