/* ===== Design tokens ===== */
:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-card: #111933;
  --bg-card-featured: #141e3a;
  --border: rgba(255, 255, 255, 0.08);
  --border-featured: rgba(94, 234, 212, 0.25);
  --text: #f5f7fb;
  --text-muted: #b6c2e1;
  --text-dim: #7aa2f7;
  --accent: #5eead4;
  --accent-dark: #06212a;
  --accent-hover: #76edd8;
  --link: #9bd1ff;
  --error: #f87171;
  --error-bg: rgba(248, 113, 113, 0.1);
  --success: #5eead4;
  --success-bg: rgba(94, 234, 212, 0.1);
  --pending: #facc15;
  --pending-bg: rgba(250, 204, 21, 0.1);
  --warn: #f59e0b;
  --warn-bg: rgba(245, 158, 11, 0.07);
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
  font-family: Inter, system-ui, sans-serif;
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Layout ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 32px 20px 60px; }
.container.narrow { max-width: 760px; }

/* ===== Hero ===== */
.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  font-size: 0.78rem;
  margin: 0 0 6px;
}
.hero h1 { margin: 0 0 8px; font-size: clamp(1.5rem, 4vw, 2.2rem); }
.hero-desc { margin: 0 0 10px; color: var(--text-muted); }
.captcha-notice { margin: 0; }
.captcha-notice--warn { color: var(--warn); }

/* ===== Language switch ===== */
.lang-switch {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.lang-switch a {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: background 0.15s, color 0.15s;
}
.lang-switch a:hover { background: rgba(255,255,255,0.05); color: var(--text); text-decoration: none; }
.lang-switch a.active { background: rgba(94, 234, 212, 0.15); color: var(--accent); border-color: rgba(94, 234, 212, 0.3); }
.lang-switch.small a { padding: 3px 8px; font-size: 0.75rem; }

/* ===== Top bar (download page) ===== */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 16px;
}

/* ===== Card grid ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

/* ===== Card ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card.featured {
  background: var(--bg-card-featured);
  border-color: var(--border-featured);
}
.badge-featured {
  display: inline-block;
  background: rgba(94, 234, 212, 0.15);
  color: var(--accent);
  border: 1px solid rgba(94, 234, 212, 0.3);
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  align-self: flex-start;
}
.card h3 { margin: 0; font-size: 1.1rem; }
.card-summary { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

/* ===== Meta list ===== */
.meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.meta-list li { display: flex; gap: 6px; align-items: baseline; flex-wrap: wrap; }
.meta-label { color: var(--text); font-weight: 600; white-space: nowrap; }

/* Platform badges */
.platform-badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 5px;
  font-size: 0.78rem;
  font-weight: 600;
}
.platform-windows { background: rgba(0, 120, 215, 0.2); color: #60aaff; }
.platform-android { background: rgba(61, 220, 132, 0.15); color: #4ade80; }
.platform-ios, .platform-macos { background: rgba(255, 255, 255, 0.08); color: var(--text-muted); }

/* ===== Buttons ===== */
.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: var(--accent-dark);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  border: 0;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  text-decoration: none;
  align-self: flex-start;
}
.button:hover { background: var(--accent-hover); text-decoration: none; }
.button:disabled,
.button.btn-loading { opacity: 0.6; cursor: not-allowed; }
.button-download { margin-top: 8px; }
.btn-arrow { opacity: 0.7; }

/* Spinner */
.btn-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent-dark);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Note / security note ===== */
.note, .result { color: var(--text-muted); }
.note--demo {
  color: var(--warn);
  font-size: 0.85rem;
  background: var(--warn-bg);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: 4px 0;
}
.security-note {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: 0.85rem;
  background: rgba(122, 162, 247, 0.07);
  border: 1px solid rgba(122, 162, 247, 0.15);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 4px 0 0;
}
.icon-lock, .icon-shield { flex-shrink: 0; margin-top: 2px; color: var(--text-dim); }

/* ===== Detail card ===== */
.card.detail { gap: 16px; }
.file-desc { margin: 0; color: var(--text-muted); }
.checksum {
  display: block;
  word-break: break-all;
  font-size: 0.75rem;
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  padding: 4px 8px;
  margin-top: 2px;
  color: var(--text-muted);
}

/* ===== Captcha section ===== */
.captcha-section { display: flex; flex-direction: column; gap: 12px; }
.captcha-heading {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0;
}
.provider-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin: 0;
}
form { display: flex; flex-direction: column; gap: 16px; }

/* ===== Result states ===== */
.result {
  margin-top: 8px;
  min-height: 24px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  padding: 0;
  transition: all 0.2s;
}
.result:not(:empty) { padding: 14px 16px; }
.result-error {
  background: var(--error-bg);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--error);
}
.result-success {
  background: var(--success-bg);
  border: 1px solid rgba(94, 234, 212, 0.3);
  color: var(--success);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.result-pending {
  background: var(--pending-bg);
  border: 1px solid rgba(250, 204, 21, 0.3);
  color: var(--pending);
}
.success-label { margin: 0; }
.expiry-countdown {
  font-size: 0.78rem;
  opacity: 0.75;
}

/* ===== Back link ===== */
.back { display: inline-block; color: var(--link); font-size: 0.9rem; }

/* ===== Accessibility: focus-visible ===== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
/* Remove focus ring for mouse users, preserve for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* ===== Empty state ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 48px 24px;
  text-align: center;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}
.empty-state-icon { font-size: 2.5rem; line-height: 1; }
.empty-state-heading { margin: 0; font-size: 1.1rem; color: var(--text); }
.empty-state-message { margin: 0; color: var(--text-muted); font-size: 0.9rem; max-width: 400px; }

/* ===== Captcha unavailable state ===== */
.captcha-unavailable {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px;
  background: rgba(248, 113, 113, 0.07);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: var(--radius-sm);
  margin-top: 4px;
}
.captcha-unavailable-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 1px; }
.captcha-unavailable-heading {
  margin: 0 0 4px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--error);
}
.captcha-unavailable-message {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(94, 234, 212, 0.2);
}
.lang-switch a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.back:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ===== Error page ===== */
.error-card { align-items: center; text-align: center; }
.error-icon { font-size: 2.5rem; line-height: 1; }
.error-message { color: var(--text-muted); margin: 0; }

/* ===== Section heading ===== */
section h2 { margin-bottom: 16px; font-size: 1.3rem; }

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .container { padding: 20px 16px 40px; }
  .hero { flex-direction: column-reverse; gap: 12px; }
  .hero .lang-switch { align-self: flex-end; }
  .grid { grid-template-columns: 1fr; }
  .top-bar { flex-wrap: wrap; gap: 8px; }
}