/* BackBy marketing site styles — no external fonts, high contrast, responsive */
:root {
  --bg: #0f172a;          /* slate-900 */
  --surface: #111827;     /* gray-900 */
  --text: #e5e7eb;        /* gray-200 */
  --muted: #94a3b8;       /* slate-400 */
  --primary: #34d399;     /* emerald-400 */
  --primary-ink: #052e1b; /* deep green ink on light surfaces */
  --accent: #a7f3d0;      /* emerald-200 */
  --danger: #f87171;      /* red-400 */
  --ring: #22d3ee;        /* cyan-400 focus ring */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: linear-gradient(180deg, var(--bg), #091226 60%);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.site-header { position: sticky; top: 0; backdrop-filter: saturate(140%) blur(8px); background: rgba(9,18,38,0.7); border-bottom: 1px solid rgba(255,255,255,0.06); z-index: 20; }
.nav { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; letter-spacing: 0.3px; text-decoration: none; }
.links { display: flex; gap: 14px; margin-left: auto; }
.links a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.links a:hover, .links a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,0.06); }
.lang { display: flex; gap: 6px; margin-left: 8px; }
.lang-btn { color: var(--muted); background: transparent; border: 1px solid rgba(255,255,255,0.16); padding: 6px 10px; border-radius: 8px; cursor: pointer; }
.lang-btn[aria-pressed="true"] { color: #0a0f13; background: var(--accent); border-color: transparent; }

.hero { padding: 56px 0 24px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.hero-copy h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.02em; }
.lead { color: var(--muted); font-size: 1.1rem; margin: 0 0 20px; }
.cta { display: flex; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px; border-radius: 12px; text-decoration: none; font-weight: 600; border: 1px solid transparent; }
.btn.primary { background: var(--primary); color: var(--primary-ink); }
.btn.ghost { background: transparent; color: var(--text); border-color: rgba(255,255,255,0.2); }
.btn.link { background: transparent; color: var(--accent); padding: 0; border: 0; text-decoration: underline; }
.btn:focus { outline: 3px solid var(--ring); outline-offset: 2px; }

.hero-card { border: 1px solid rgba(255,255,255,0.06); background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01)); border-radius: 16px; padding: 16px; }
.card-list { display: grid; gap: 12px; }
.card { display: grid; grid-template-columns: 36px 1fr; gap: 8px; align-items: center; padding: 12px; border-radius: 12px; background: rgba(0,0,0,0.2); border: 1px solid rgba(255,255,255,0.06); }
.icon { font-size: 20px; }
.card-title { font-weight: 700; }
.card-text { color: var(--muted); margin-top: -4px; grid-column: 2; }

.section { padding: 56px 0; }
.surface { background: var(--surface); box-shadow: inset 0 1px 0 rgba(255,255,255,0.06); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { border: 1px solid rgba(255,255,255,0.06); background: rgba(255,255,255,0.03); border-radius: 14px; padding: 16px; }
.num { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #083b2c; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 8px; }

.trust .trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trust .trust-item { border: 1px solid rgba(255,255,255,0.06); background: rgba(255,255,255,0.03); border-radius: 14px; padding: 16px; }

.privacy .checks { list-style: none; padding: 0; margin: 12px 0 0; }
.privacy .checks li { margin: 8px 0; padding-left: 28px; position: relative; }
.privacy .checks li::before { content: "✔"; position: absolute; left: 0; color: var(--primary); }
.pledge-actions { margin-top: 16px; display: flex; gap: 16px; flex-wrap: wrap; }

.resilience p { color: var(--muted); max-width: 70ch; }

.faq details { border: 1px solid rgba(255,255,255,0.06); background: rgba(255,255,255,0.03); border-radius: 12px; padding: 12px 14px; margin: 10px 0; }
.faq summary { cursor: pointer; font-weight: 700; }

.orgs .orgs-list { margin: 10px 0 16px; }
.orgs .orgs-list li { margin: 6px 0; }

.contact { text-align: center; }

.site-footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 28px 0; }
.foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.muted { color: var(--muted); }
.foot a { color: var(--muted); text-decoration: none; margin-left: 12px; }
.foot a:hover { color: var(--text); text-decoration: underline; }

.prose { max-width: 75ch; }
.prose h1 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 8px; }
.prose .lead { margin-top: 0; }
.callouts { margin: 20px 0; display: flex; gap: 12px; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .trust .trust-grid { grid-template-columns: 1fr; }
  .links { display: none; }
}
.get .card-list { display: grid; gap: 12px; }
.get .card { align-items: start; }