/* ==========================================================================
   TCP123 UK — Utilities & Modal Overlay Styles
   ========================================================================== */

/* Keyframe Animations */
@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.4s var(--transition-normal) forwards;
}

/* Modal Overlay & Form Components */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(11, 19, 43, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-backdrop.active .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-main);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-surface);
  color: var(--color-text-main);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-brand-blue);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* Mobile Drawer Overlay */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 76px;
  left: 0;
  width: 100%;
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  z-index: 999;
}

.mobile-drawer.active {
  display: block;
  animation: fadeIn 0.3s forwards;
}

.mobile-drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-drawer-links a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hamburger-btn {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

@media (max-width: 868px) {
  .nav-links, .nav-actions {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
}