/* ProofAlive — coming-soon landing.
   Monochrome black & white. No color anywhere — grayscale only. */

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

:root {
  --bg:        #0a0a0a;
  --bg-glow:   rgba(255, 255, 255, 0.045);
  --text:      #f5f5f5;
  --text-dim:  #a3a3a3;
  --text-faint:#8a8a8a;
  --border:    rgba(255, 255, 255, 0.10);
  --focus:     rgba(255, 255, 255, 0.60);
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif,
               "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body { min-height: 100dvh; }

.page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  max-width: 46rem;
  margin-inline: auto;
  padding-block: 1.5rem 2rem;
  padding-inline: 1.5rem;
  background:
    radial-gradient(60rem 40rem at 50% -10%, var(--bg-glow), transparent 60%);
}

/* ── Header ─────────────────────────────────── */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  /* Brand wordmark stays Latin and LTR in all languages, incl. RTL layout */
  direction: ltr;
  unicode-bidi: isolate;
}

/* Language switcher (rendered by i18n.js) */
.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding-block: 0.375rem;
  padding-inline: 0.75rem 1.75rem;
  font: inherit;
  font-size: 0.875rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23a3a3a3' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.625rem center;
}
[dir="rtl"] .lang-select { background-position: left 0.625rem center; }
.lang-select:hover { color: var(--text); border-color: rgba(255,255,255,0.2); }
.lang-select:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ── Hero ───────────────────────────────────── */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 3rem;
}

.title {
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 750;
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-block-end: 1.25rem;
}
[dir="rtl"] .title { letter-spacing: 0; }

.body {
  color: var(--text-dim);
  font-size: clamp(1.0625rem, 2.5vw, 1.1875rem);
  max-width: 38rem;
  text-wrap: pretty;
}

/* ── Footer ─────────────────────────────────── */
.bottom {
  border-block-start: 1px solid var(--border);
  padding-block-start: 1.25rem;
}

.disclaimer {
  color: var(--text-faint);
  font-size: 0.8125rem;
}

/* ── Motion & interaction ───────────────────── */
.hero > * {
  animation: rise 0.6s ease-out both;
}
.hero > :nth-child(2) { animation-delay: 0.08s; }

@keyframes rise {
  from { opacity: 0; transform: translateY(0.5rem); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (min-width: 48rem) {
  .page { padding-inline: 2.5rem; padding-block: 2rem 2.5rem; }
}