/* ==========================================================================
   Components
   ========================================================================== */

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: #fff;
  border-radius: var(--radius-full);
}

.btn--primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
  filter: brightness(1.05);
}

.btn--secondary {
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  background-color: #fff;
  border-radius: var(--radius-full);
}

.btn--secondary:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--text-base);
}

/* ---------- Cards ---------- */

.card {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

.card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
}

.card__meta {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.card__link:hover {
  color: var(--color-accent-hover);
  gap: var(--space-sm);
}

/* ---------- Badges ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.25rem 0.625rem;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.badge--accent {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.badge--teal {
  border-color: var(--color-accent-secondary);
  color: var(--color-accent-secondary);
}

.badge--success {
  border-color: var(--color-success);
  color: var(--color-success);
}

/* ---------- Navigation ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.nav__logo:hover {
  color: var(--color-text-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text-primary);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 0;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Code Blocks ---------- */

.code-block {
  position: relative;
  background-color: #1e1e2e;
  border: 1px solid #2a2a3e;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-block__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background-color: #161625;
  border-bottom: 1px solid #2a2a3e;
  font-size: var(--text-xs);
  color: #8888a0;
}

.code-block__dots {
  display: flex;
  gap: 6px;
}

.code-block__dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #3a3a50;
}

.code-block pre {
  border: none;
  border-radius: 0;
  margin: 0;
  background-color: #1e1e2e;
  color: #e4e4ed;
}

.code-block code {
  background: none;
  border: none;
  color: #e4e4ed;
}

/* Syntax highlighting (CSS-only) */
.code-block .keyword { color: #c678dd; }
.code-block .function { color: #61afef; }
.code-block .string { color: #98c379; }
.code-block .comment { color: #5c6370; font-style: italic; }
.code-block .number { color: #d19a66; }
.code-block .variable { color: #e06c75; }
.code-block .tag { color: #e06c75; }
.code-block .attr { color: #d19a66; }

/* ---------- Stats Bar ---------- */

.stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ---------- Tabs ---------- */

.tabs {
  margin-bottom: var(--space-xl);
}

.tab-list {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--color-text-primary);
}

.tab-btn[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tab-panel {
  display: none;
  padding-top: var(--space-xl);
}

.tab-panel.active {
  display: block;
}

/* ---------- Feature List ---------- */

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.feature-list li::before {
  content: '';
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  background-color: var(--color-success);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  mask-size: contain;
  -webkit-mask-size: contain;
}

/* ---------- Steps ---------- */

.steps {
  display: flex;
  gap: var(--space-xl);
  counter-reset: step;
}

.step {
  flex: 1;
  text-align: center;
  counter-increment: step;
}

.step__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: var(--space-md);
  background-color: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: var(--text-lg);
  border-radius: 50%;
}

.step__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ---------- Footer ---------- */

.footer {
  position: relative;
  padding-block: var(--space-3xl);
  margin-top: var(--space-4xl);
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
  opacity: 0.4;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.footer__brand {
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.footer__brand:hover {
  color: var(--color-text-primary);
}

.footer__links {
  display: flex;
  gap: var(--space-xl);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__credit {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}