*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  letter-spacing: -0.01em;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.03em;
}

p,
li,
span {
  text-wrap: pretty;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
}

button,
a,
input,
textarea,
select {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

main section {
  position: relative;
}

.section-inner {
  /* max-width: var(--content-width); */
  margin: 0 auto;
  padding: 0 5rem;
  width: 100%;
}

.section-header {
  padding: var(--section-space) 0 1.25rem;
  text-align: left;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.3vw, 3rem);
  color: var(--text-primary);
  margin-bottom: 0.65rem;
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 720px;
  font-weight: 500;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0.74em 1.2em;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  outline: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--surface-inverse);
  color: var(--surface-inverse-text);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}

.badge-green {
  background: #dcfce7;
  color: #15803d;
}

.badge-orange {
  background: #ffedd5;
  color: #c2410c;
}

.badge-blue {
  background: var(--accent-subtle);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.badge-purple {
  background: #f3e8ff;
  color: #7c3aed;
}

[data-theme="dark"] .badge-green {
  background: #14532d;
  color: #86efac;
}

[data-theme="dark"] .badge-orange {
  background: #431407;
  color: #fdba74;
}

[data-theme="dark"] .badge-purple {
  background: #3b0764;
  color: #c4b5fd;
}

.inactive-link {
  pointer-events: none;
  opacity: 0.45;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 20px;
  background: var(--bg-surface-2);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.9em 1.4em;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  z-index: 9000;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 320px;
  box-shadow: var(--shadow-lg);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success {
  background: #15803d;
  color: #fff;
}

.toast.error {
  background: #dc2626;
  color: #fff;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }

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

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }

  50% {
    opacity: 0.45;
  }
}

@keyframes shakeX {
  0%, 100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-4px);
  }

  75% {
    transform: translateX(4px);
  }
}

.animate-shake {
  animation: shakeX 0.5s ease;
}

@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }

  .section-inner {
    padding: 0 1rem;
  }

  .section-header {
    padding: 4rem 0 1rem;
  }
}