/* ================================
   BUTTON COMPONENTS
   All button variants using token colors
   Rule: Components reference variables, never define colors
   ================================ */

/* Base Button Structure */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

/* Primary Button (Teal Gradient) */
.btn-primary {
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
  box-shadow: var(--shadow-lg), var(--shadow-glass);
}

.btn-primary:hover {
  transform: var(--lift-md);
  box-shadow: var(--shadow-elevated);
}

/* Secondary Button (Transparent with Border) */
.btn-secondary {
  background: var(--button-secondary-bg);
  color: var(--button-secondary-text);
  border: 2px solid var(--button-secondary-border);
  backdrop-filter: var(--blur-sm);
}

.btn-secondary:hover {
  background: var(--glass-teal-hover);
  border-color: var(--accent-secondary);
  transform: var(--lift-md);
  box-shadow: var(--glow-lg);
}

/* Navigation CTA Button */
.btn-nav {
  padding: 10px 24px;
  font-size: 1rem;
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
  box-shadow: var(--shadow-lg), var(--shadow-glass);
}

.btn-nav:hover {
  transform: var(--lift-sm);
  box-shadow: var(--shadow-elevated);
}

/* Menu Button (Navigation Dropdown) */
.btn-menu {
  background: transparent;
  border: 2px solid var(--border-medium);
  color: var(--nav-text);
  padding: 10px 24px;
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: var(--letter-spacing-wide);
}

.btn-menu::after {
  content: '▾';
  font-size: 0.8rem;
  transition: transform var(--transition-base);
}

.btn-menu.active::after {
  transform: rotate(180deg);
}

.btn-menu:hover {
  transform: var(--lift-sm);
  border-color: var(--border-strong);
  background: var(--glass-teal-hover-subtle);
  box-shadow: var(--glow-md);
}

/* Contact Buttons */
.btn-contact {
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
  box-shadow: var(--shadow-lg), var(--shadow-glass);
  pointer-events: auto;
}

.btn-contact:hover {
  transform: var(--lift-md);
  box-shadow: var(--shadow-elevated);
}

/* Small Button Variant */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* Large Button Variant */
.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-xl);
}

/* Full Width Button */
.btn-block {
  width: 100%;
  display: block;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .btn {
    padding: 0.65rem 1.25rem;
    font-size: 1rem;
  }

  .btn-nav,
  .btn-menu {
    width: 100%;
    text-align: center;
    margin-top: 10px;
  }
}