/* Reset + base typography */

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper-0);
  color: var(--ink-1);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga";
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
  color: inherit;
}

input, textarea {
  font-family: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--paper-line);
  border-radius: var(--r-md);
  padding: var(--s-2) var(--s-3);
}

input:focus-visible, textarea:focus-visible, button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
  border-color: var(--accent);
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--ink-0);
  margin: 0;
  letter-spacing: -0.015em;
}

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Scroll bars — subtle */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--paper-line); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--paper-3); }

/* ═══════════════ ONBOARDING HINTS ═══════════════ */
.onboard-hint {
  position: fixed;
  z-index: 70;
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--ink-0);
  color: var(--paper-0);
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.4;
  max-width: 520px;
  box-shadow: var(--sh-4);
  opacity: 0;
  transform: translateY(-8px);
  animation: oh-in 280ms cubic-bezier(.3,.8,.3,1) 400ms forwards;
}
.onboard-hint-top {
  top: var(--s-4);
  left: 50%;
  transform: translate(-50%, -8px);
}
.onboard-hint-top.leaving { opacity: 0; transform: translate(-50%, -8px); }
@keyframes oh-in {
  to { opacity: 1; transform: translate(-50%, 0); }
}
.onboard-hint-bottom-right {
  bottom: var(--s-6);
  right: var(--s-4);
}
.onboard-hint .oh-text { flex: 1; }
.onboard-hint .oh-close {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  background: transparent;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  letter-spacing: 0.06em;
}
.onboard-hint .oh-close:hover { background: rgba(232,160,144,0.15); }

/* Override top transform for Reader — its --ink-0 can be light in dark theme */
body[data-theme="dusk"] .onboard-hint,
body[data-theme="oled"] .onboard-hint {
  background: var(--paper-2);
  color: var(--ink-0);
}