*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.lib-link { color: #64748b; font-size: .875rem; text-decoration: none; }
.lib-link:hover { color: #2563eb; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: #f1f5f9;
  color: #0f172a;
  min-height: 100vh;
}

/* ── Page layout ─────────────────────────────────────────── */
.page { max-width: 800px; margin: 0 auto; padding: 3rem 1.5rem 5rem; display: flex; flex-direction: column; gap: 3rem; }

.page__hero { text-align: center; }
.page__hero h1 { font-size: 2.25rem; font-weight: 800; letter-spacing: -.02em; margin-bottom: .5rem; }
.page__hero p  { color: #64748b; font-size: 1.0625rem; max-width: 520px; margin: 0 auto 1.75rem; }

.hero-btns { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  padding: .625rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.btn:hover  { opacity: .88; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn--primary { background: #2563eb; color: #fff; }
.btn--success { background: #16a34a; color: #fff; }
.btn--error   { background: #dc2626; color: #fff; }
.btn--info    { background: #0284c7; color: #fff; }
.btn--warn    { background: #d97706; color: #fff; }

/* ── Architecture block ──────────────────────────────────── */
.page__arch h2, .page__why h2 { font-size: 1.25rem; font-weight: 700; margin-bottom: 1rem; }

.code-block {
  background: #0f172a;
  color: #94a3b8;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  font-size: .875rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
}
.code-block .hl  { color: #7dd3fc; font-weight: 600; }
.code-block .ok  { color: #86efac; }
.code-block .mut { color: #fda4af; }

/* ── Why Objs compare ───────────────────────────────────── */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .compare { grid-template-columns: 1fr; } }

.compare__col { background: #fff; border: 1.5px solid #e2e8f0; border-radius: 10px; padding: 1.25rem; }
.compare__col h3 { font-size: .9375rem; font-weight: 700; margin-bottom: .75rem; }
.compare__col--react h3 { color: #64748b; }
.compare__col--objs  h3 { color: #2563eb; }
.compare__col pre { font-size: .8125rem; line-height: 1.65; color: #334155; white-space: pre-wrap; word-break: break-word; }

/* ── Toast container ─────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .625rem;
  z-index: 9999;
  pointer-events: none;
}

/* ── Toast atom ──────────────────────────────────────────── */
.toast {
  display: flex;
  align-items: flex-start;
  gap: .625rem;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,.12), 0 1px 4px rgba(0,0,0,.06);
  padding: .875rem 1rem .875rem .875rem;
  min-width: 280px;
  max-width: 380px;
  pointer-events: all;
  position: relative;
  overflow: hidden;
  animation: toast-in .25s cubic-bezier(.34,1.56,.64,1) forwards;
  border-left: 4px solid transparent;
}
.toast--success { border-left-color: #16a34a; }
.toast--error   { border-left-color: #dc2626; }
.toast--info    { border-left-color: #0284c7; }
.toast--warn    { border-left-color: #d97706; }

.toast--out { animation: toast-out .3s ease forwards; }

.toast__icon { font-size: 1.1rem; flex-shrink: 0; margin-top: .05rem; }
.toast--success .toast__icon { color: #16a34a; }
.toast--error   .toast__icon { color: #dc2626; }
.toast--info    .toast__icon { color: #0284c7; }
.toast--warn    .toast__icon { color: #d97706; }

.toast__msg   { flex: 1; font-size: .9375rem; line-height: 1.45; color: #0f172a; }
.toast__close {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: #94a3b8;
  font-size: .875rem;
  padding: 0 .25rem;
  line-height: 1;
  transition: color .15s;
}
.toast__close:hover { color: #475569; }

/* Progress bar */
.toast__progress {
  position: absolute;
  bottom: 0; left: 0; height: 3px;
  background: currentColor;
  opacity: .25;
  width: 100%;
  animation: progress var(--duration, 3.5s) linear forwards;
}
.toast--success .toast__progress { color: #16a34a; }
.toast--error   .toast__progress { color: #dc2626; }
.toast--info    .toast__progress { color: #0284c7; }
.toast--warn    .toast__progress { color: #d97706; }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(2rem) scale(.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: scale(1); max-height: 100px; }
  to   { opacity: 0; transform: scale(.9); max-height: 0; padding: 0; margin: 0; }
}
@keyframes progress {
  from { width: 100%; }
  to   { width: 0; }
}