/* ===== Layout & Utilities — KukuPDF ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-base);
  font-family: var(--font-ui);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

/* Shine sweep on hover */
.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
  transition: none;
}

.btn:hover::after {
  animation: shineSweep 0.5s ease forwards;
}

@keyframes shineSweep {
  to { left: 100%; }
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
  box-shadow: var(--glow-btn);
  font-weight: 700;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(57, 255, 20, 0.45);
}

.btn-primary:active {
  transform: translateY(0) scale(0.96);
}

.btn-outline {
  border: 1px solid rgba(123, 47, 255, 0.5);
  color: var(--primary-light);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(123, 47, 255, 0.1);
  border-color: var(--primary);
  color: var(--text-main);
}

.btn-ghost {
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-main);
  background: rgba(123, 47, 255, 0.1);
}

.btn-success {
  background: var(--accent);
  color: var(--text-inverse);
  box-shadow: var(--glow-btn);
  font-weight: 700;
}

.btn-success:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-dark {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

.btn-dark:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-sm {
  padding: 6px 16px;
  font-size: var(--fs-sm);
}

.btn-lg {
  padding: 14px 32px;
  font-size: var(--fs-lg);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn:disabled, .btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Cards */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-bright);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 500;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-red, .badge-green {
  background: var(--accent);
  color: var(--text-inverse);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.5);
}

.badge-blue {
  background: var(--primary);
  color: var(--text-main);
}

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: var(--space-lg) 0;
}

/* Text utilities */
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.text-primary { color: var(--primary-light); }
.text-accent { color: var(--accent); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-sm { font-size: var(--fs-sm); }
.text-lg { font-size: var(--fs-lg); }

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }