.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-button);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  border: 1.5px solid transparent;
  transition: var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  font-weight: 700;
}

.btn-accent:hover {
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.btn-ghost:hover {
  background: rgba(26, 58, 92, 0.06);
  border-color: var(--color-primary);
}

.btn-ghost-white {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}

.btn-ghost-white:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background: var(--rose-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(244, 63, 94, 0.35);
}

.btn-sm {
  min-height: 36px;
  padding: 0.4rem 1rem;
  font-size: var(--text-sm);
}

.btn-lg {
  min-height: 52px;
  padding: 0.875rem 2rem;
  font-size: var(--text-lg);
}

.btn-xl {
  min-height: 60px;
  padding: 1rem 2.5rem;
  font-size: var(--text-xl);
  font-weight: 700;
}

.btn-block {
  width: 100%;
}

.btn-xs {
  min-height: 30px;
  padding: 0.3rem 0.75rem;
  font-size: var(--text-xs);
}

.btn.is-loading {
  pointer-events: none;
  opacity: 0.8;
  position: relative;
}

.btn.is-loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin 0.8s linear infinite;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.badge-blue {
  background: var(--navy-100);
  color: var(--navy-700);
}

.badge-amber {
  background: var(--amber-100);
  color: var(--amber-600);
}

.badge-green {
  background: var(--green-100);
  color: var(--green-600);
}

.badge-rose {
  background: var(--rose-100);
  color: var(--rose-600);
}

.badge-purple {
  background: var(--purple-100);
  color: var(--purple-600);
}

.badge-teal {
  background: var(--teal-100);
  color: var(--teal-600);
}

.badge-orange {
  background: var(--orange-100);
  color: var(--orange-600);
}

.badge-verified {
  background: var(--green-100);
  color: var(--green-600);
  animation: pulse-verified 2s ease-in-out infinite;
}

.text-rose {
  color: var(--rose-600);
}

.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: blink-dot 1.4s ease-in-out infinite;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

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

.card--flat {
  box-shadow: none;
}

.card--accent-top {
  border-top: 3px solid var(--color-accent);
}

.flash-message {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  font-weight: 500;
}

.flash-message i {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.flash-message--success {
  border-color: var(--green-100);
  background: #f0fdf4;
  color: var(--green-600);
}

.flash-message--error {
  border-color: var(--rose-100);
  background: #fff1f2;
  color: var(--rose-600);
}

.flash-message--info {
  border-color: var(--navy-100);
  background: var(--navy-50);
  color: var(--navy-600);
}

.flash-alert {
  position: fixed;
  top: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: min(640px, calc(100% - 2rem));
  max-width: none;
  padding: 0;
  pointer-events: none;
}

.flash-alert .flash-message {
  pointer-events: auto;
  box-shadow: var(--shadow-lg);
  animation: flash-slide-in 0.25s ease-out;
}

@keyframes flash-slide-in {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .flash-alert {
    top: var(--space-3);
    width: calc(100% - 1.5rem);
  }

  .flash-message {
    padding: 0.875rem 1rem;
    font-size: var(--text-sm);
  }

  .flash-message i {
    font-size: 1rem;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-label span.required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-white);
  transition: var(--transition-base);
  min-height: 44px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.12);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-danger);
}

.form-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.form-checkbox input {
  margin-top: 0.15rem;
}

.stat-block {
  text-align: center;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: var(--space-2);
  display: block;
}

.section-header {
  max-width: 680px;
}

.section-header--center {
  text-align: center;
  margin: 0 auto;
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

.mt-1 {
  margin-top: var(--space-1);
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.p-4 {
  padding: var(--space-4);
}

.p-6 {
  padding: var(--space-6);
}

.content-narrow {
  max-width: 760px;
}

.content-wide {
  max-width: 900px;
}

.surface-rose {
  background: linear-gradient(120deg, #fffdfb 0%, #fff5f7 60%, #fff2f2 100%);
}

.surface-warm {
  background: linear-gradient(120deg, #fff7ec 0%, #fffaf3 100%);
}

.card-soft-rose {
  background: #fff7f9;
  border-color: #ffd4df;
}

.grid-form-4 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-form-3 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-form-2 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.full-span {
  grid-column: 1 / -1;
}

.grid-stack {
  display: grid;
  gap: 1rem;
}

.grid-stack--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-stack--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-stack--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 1024px) {

  .grid-form-4,
  .grid-stack--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {

  .grid-form-4,
  .grid-form-3,
  .grid-form-2,
  .grid-stack--4,
  .grid-stack--3,
  .grid-stack--2 {
    grid-template-columns: 1fr;
  }

  .content-narrow,
  .content-wide {
    max-width: 100%;
  }
}

@keyframes pulse-verified {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }

  50% {
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
  }
}

@keyframes blink-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

@keyframes spin {
  from {
    transform: rotate(0);
  }

  to {
    transform: rotate(360deg);
  }
}