/* ==========================================================================
   Buttons, Cards, Tags & Badges
   ========================================================================== */

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, rgb(var(--accent-dark-rgb)), rgb(var(--accent-primary-rgb)));
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 4px 15px rgba(var(--accent-dark-rgb), 0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 30px rgba(var(--accent-primary-rgb), 0.4),
              0 0 20px rgba(var(--accent-secondary-rgb), 0.15);
  color: #fff;
}


.btn-primary:active {
  transform: translateY(-1px) scale(0.99);
  box-shadow: 0 4px 12px rgba(var(--accent-primary-rgb), 0.3);
}

.btn-primary svg {
  transition: transform 0.25s ease;
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--text-secondary);
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, color 0.25s ease, background 0.25s ease;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn-secondary:hover {
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 25px rgba(var(--accent-primary-rgb), 0.25);
}

.btn-secondary:hover::before {
  opacity: 1;
}

.btn-secondary:active {
  transform: translateY(-1px) scale(0.99);
}

.btn-secondary svg {
  transition: transform 0.25s ease;
}

.btn-secondary:hover svg {
  transform: translateX(3px);
}

/* --- Service / Feature Cards --- */
.service-card {
  position: relative;
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
  box-shadow: var(--glass-highlight), 0 4px 16px var(--shadow-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--accent-primary-rgb), 0.2);
  box-shadow: 0 12px 40px var(--shadow-color);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  background: rgba(var(--accent-primary-rgb), 0.08);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.12);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card:nth-child(2) .service-icon {
  background: rgba(var(--accent-secondary-rgb), 0.08);
  border-color: rgba(var(--accent-secondary-rgb), 0.12);
}

.service-card:nth-child(2) .service-icon svg {
  stroke: var(--accent-secondary);
}

.service-card:nth-child(3) .service-icon {
  background: rgba(var(--accent-dark-rgb), 0.08);
  border-color: rgba(var(--accent-dark-rgb), 0.12);
}

.service-card:nth-child(3) .service-icon svg {
  stroke: var(--accent-dark);
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* --- Tags --- */
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.service-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  background: rgba(var(--accent-primary-rgb), 0.06);
  color: var(--accent-primary);
  border: 1px solid rgba(var(--accent-primary-rgb), 0.1);
  font-weight: 500;
}

.service-card:nth-child(2) .service-tag {
  background: rgba(var(--accent-secondary-rgb), 0.06);
  color: var(--accent-secondary);
  border-color: rgba(var(--accent-secondary-rgb), 0.1);
}

.service-card:nth-child(3) .service-tag {
  background: rgba(var(--accent-dark-rgb), 0.06);
  color: var(--accent-dark);
  border-color: rgba(var(--accent-dark-rgb), 0.1);
}

/* --- Engineering cards --- */
.eng-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--glass-highlight), 0 4px 16px var(--shadow-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.eng-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--shadow-color);
}

.eng-card svg {
  width: 36px;
  height: 36px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 0.75rem;
}

.eng-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.eng-card p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Platform pills --- */
.platform-category {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--glass-highlight), 0 4px 16px var(--shadow-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.platform-category:hover {
  border-color: rgba(var(--accent-primary-rgb), 0.2);
  box-shadow: 0 8px 24px var(--shadow-color);
}

.platform-category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.platform-category-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--accent-primary-rgb), 0.08);
}

.platform-category-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.platform-category h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.platform-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.platform-item {
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  font-weight: 500;
  transition: color var(--transition), border-color var(--transition);
}

.platform-item:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

/* --- Focus items --- */
.focus-item {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--glass-highlight), 0 4px 16px var(--shadow-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.focus-item:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--accent-secondary-rgb), 0.2);
  box-shadow: 0 8px 24px var(--shadow-color);
}

.focus-item svg {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  stroke: var(--accent-secondary);
  fill: none;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.focus-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.focus-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
}