/* Random Quote Generator
   Aesthetic POV: "Quiet Editorial - ink on warm paper".
   One considered thought, set like a page from a literary journal.
   Hand-authored CSS with OKLCH tokens and native nesting. No build step. */

/* ---------- Tokens ---------- */
:root {
  color-scheme: light dark;

  /* light (default) */
  --paper:      oklch(0.972 0.012 85);
  --page-1:     oklch(0.945 0.020 80);
  --page-2:     oklch(0.905 0.034 58);
  --bloom-a:    oklch(0.88 0.07 30);
  --bloom-b:    oklch(0.90 0.05 250);
  --ink:        oklch(0.28 0.040 270);
  --ink-soft:   oklch(0.46 0.030 270);
  --accent:     oklch(0.555 0.150 24);
  --accent-deep:oklch(0.48 0.150 24);
  --accent-ink: oklch(0.975 0.012 85);
  --hairline:   oklch(0.28 0.04 270 / 0.16);
  --focus:      oklch(0.55 0.18 255);
  --shadow:     oklch(0.30 0.05 60 / 0.20);

  /* spacing scale (4px base) */
  --s1: 0.25rem;
  --s2: 0.5rem;
  --s3: 1rem;
  --s4: 1.5rem;
  --s5: 2.5rem;
  --s6: 4rem;

  --radius: clamp(14px, 2vw, 22px);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  --serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:      oklch(0.255 0.022 285);
    --page-1:     oklch(0.175 0.025 280);
    --page-2:     oklch(0.215 0.040 300);
    --bloom-a:    oklch(0.42 0.090 22);
    --bloom-b:    oklch(0.40 0.070 255);
    --ink:        oklch(0.935 0.015 85);
    --ink-soft:   oklch(0.76 0.020 85);
    --accent:     oklch(0.74 0.140 30);
    --accent-deep:oklch(0.66 0.150 28);
    --accent-ink: oklch(0.20 0.022 285);
    --hairline:   oklch(0.93 0.015 85 / 0.18);
    --focus:      oklch(0.74 0.150 255);
    --shadow:     oklch(0.10 0.02 285 / 0.55);
  }
}

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

html {
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--page-2);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: var(--s2);
  translate: -50% -150%;
  z-index: 10;
  padding: var(--s2) var(--s3);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: translate 220ms var(--ease-out-expo);
}

.skip-link:focus-visible {
  translate: -50% 0;
}

/* ---------- Page shell ---------- */
.page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(var(--s4), 4vh, var(--s5));
  padding: clamp(1.25rem, 4vw, 4rem);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(62% 80% at 16% 12%, var(--bloom-a), transparent 60%),
    radial-gradient(58% 72% at 86% 90%, var(--bloom-b), transparent 62%),
    linear-gradient(158deg, var(--page-1), var(--page-2));
}

/* a faint grain/star drift behind the card, purely atmospheric */
.page::before {
  content: "";
  position: absolute;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(circle at 22% 28%, var(--hairline) 0 1px, transparent 1.4px),
    radial-gradient(circle at 72% 64%, var(--hairline) 0 1px, transparent 1.4px),
    radial-gradient(circle at 48% 86%, var(--hairline) 0 1px, transparent 1.4px);
  background-size: 180px 180px, 240px 240px, 200px 200px;
  opacity: 0.5;
  animation: drift 40s linear infinite;
}

@keyframes drift {
  to { transform: translate3d(-180px, -120px, 0); }
}

/* ---------- Quote card ---------- */
.card {
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 44rem;
  padding: clamp(1.75rem, 5vw, 3.5rem);
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow:
    0 1px 2px var(--shadow),
    0 22px 48px -20px var(--shadow);
  animation: card-in 560ms var(--ease-out-expo) both;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(16px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}

/* signature: oversized opening quotation mark bleeding off the corner */
.card__glyph {
  position: absolute;
  top: clamp(-2.2rem, -3vw, -1.2rem);
  left: clamp(0.6rem, 2vw, 1.4rem);
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(7rem, 17vw, 13rem);
  line-height: 1;
  color: var(--accent);
  opacity: 0.12;
  pointer-events: none;
  user-select: none;
}

.card__eyebrow {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  font-family: var(--sans);
  font-size: clamp(0.68rem, 0.64rem + 0.2vw, 0.76rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.card__star {
  width: 7px;
  height: 7px;
  background: var(--accent);
  clip-path: polygon(50% 0, 61% 39%, 100% 50%, 61% 61%, 50% 100%, 39% 61%, 0 50%, 39% 39%);
  animation: twinkle 3.6s var(--ease-out-expo) infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.78); }
}

.card__quote {
  position: relative;
  margin-top: clamp(var(--s3), 3vw, var(--s4));
  transition: opacity 300ms var(--ease-out-expo), transform 300ms var(--ease-out-expo);
}

.card.is-swapping .card__quote {
  opacity: 0;
  transform: translateY(10px);
}

.card__text {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-weight: 460;
  font-size: clamp(1.45rem, 1rem + 3vw, 2.7rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.card__divider {
  display: block;
  width: min(58%, 21rem);
  height: 1px;
  margin: clamp(var(--s4), 3.5vw, var(--s5)) 0 var(--s4);
  background: linear-gradient(90deg, var(--accent), var(--hairline) 70%, transparent);
}

.card__credit {
  border: 0;
}

.card__author {
  font-family: var(--sans);
  font-style: normal;
  font-weight: 600;
  font-size: clamp(0.95rem, 0.85rem + 0.6vw, 1.15rem);
  letter-spacing: 0.04em;
  color: var(--accent-deep);
}

/* ---------- Action bar ---------- */
.action-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  margin-top: clamp(var(--s5), 5vw, var(--s6));
}

.action-bar__secondary {
  display: flex;
  align-items: center;
  gap: var(--s2);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  font-family: var(--sans);
  font-size: clamp(0.9rem, 0.85rem + 0.3vw, 1.02rem);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  transition:
    transform 220ms var(--ease-out-expo),
    background-color 200ms ease,
    color 200ms ease,
    border-color 200ms ease,
    box-shadow 220ms var(--ease-out-expo);
}

.btn__icon {
  flex: none;
}

.btn--primary {
  padding: clamp(0.65rem, 2vw, 0.85rem) clamp(1.1rem, 3vw, 1.6rem);
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 20px -10px var(--accent-deep);
}

.btn--primary:hover {
  background: var(--accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 26px -10px var(--accent-deep);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--primary:hover .btn__icon {
  transform: rotate(-180deg);
  transition: transform 600ms var(--ease-out-expo);
}

.btn--ghost {
  padding: clamp(0.55rem, 2vw, 0.7rem) clamp(0.85rem, 2.4vw, 1.1rem);
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--hairline);
}

.btn--ghost:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
  transform: translateY(-2px);
}

.btn--ghost:active {
  transform: translateY(0);
}

.btn.is-copied {
  color: var(--accent-deep);
  border-color: var(--accent);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 999px;
}

/* ---------- Footer ---------- */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s2) var(--s3);
  font-size: clamp(0.72rem, 0.7rem + 0.2vw, 0.8rem);
  color: var(--ink-soft);
}

.site-footer__mark {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.site-footer__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

.site-footer__hint {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
}

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 1.5em;
  padding: 0.15em 0.4em;
  font-family: var(--sans);
  font-size: 0.78em;
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  box-shadow: 0 1px 0 var(--hairline);
}

/* ---------- Responsive reflow ---------- */
@media (max-width: 30rem) {
  .page {
    justify-content: flex-start;
    padding-top: clamp(2.5rem, 14vh, 5rem);
  }

  .action-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .action-bar__secondary {
    justify-content: space-between;
  }

  .btn--primary {
    justify-content: center;
  }

  .action-bar__secondary .btn {
    flex: 1;
    justify-content: center;
  }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}