/* ==========================================================================
   PROMPTLENS — APP NAVIGATION (rail sidebar + header)
   ========================================================================== */

.icon { width: 20px; height: 20px; stroke: currentColor; flex-shrink: 0; }
.icon-lg { width: 28px; height: 28px; }
.icon-sm { width: 16px; height: 16px; }
.icon-xs { width: 13px; height: 13px; }

/* ---- Marketing header (for public pages: home, pricing, faq, legal, etc.) ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(16, 20, 28, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-hair);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5); }

.brand {
  display: flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
  color: var(--ink-primary);
}
.brand-mark {
  width: 30px; height: 30px; border-radius: var(--r-sm);
  background: var(--accent-scan); color: var(--ink-on-accent);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.brand-mark svg { width: 18px; height: 18px; }

.main-nav { display: flex; align-items: center; gap: var(--sp-6); }
.main-nav ul { display: flex; align-items: center; gap: var(--sp-5); }
.main-nav a {
  font-size: var(--fs-body); font-weight: 500; color: var(--ink-secondary);
  transition: color var(--dur-fast);
  position: relative;
}
.main-nav a:hover { color: var(--ink-primary); }
.main-nav a.is-active { color: var(--ink-primary); }
.main-nav a.is-active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -20px;
  height: 2px; background: var(--accent-scan);
}

.header-actions { display: flex; align-items: center; gap: var(--sp-3); }

.lang-switch {
  position: relative;
}
.lang-switch-btn {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--bg-surface-2); border: 1px solid var(--line-hair);
  border-radius: var(--r-full); padding: 0.4rem 0.75rem;
  color: var(--ink-secondary); font-size: var(--fs-caption); font-weight: 600;
}
.lang-switch-btn:hover { color: var(--ink-primary); }
.lang-switch-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--bg-surface); border: 1px solid var(--line-strong);
  border-radius: var(--r-md); box-shadow: var(--shadow-3);
  min-width: 160px; padding: var(--sp-2); z-index: 60;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all var(--dur-fast) var(--ease-out);
}
.lang-switch.is-open .lang-switch-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switch-menu button {
  display: flex; width: 100%; align-items: center; justify-content: space-between;
  background: transparent; border: none; color: var(--ink-secondary);
  padding: 0.55rem 0.7rem; border-radius: var(--r-sm); font-size: var(--fs-body);
  text-align: left;
}
.lang-switch-menu button:hover { background: var(--bg-surface-2); color: var(--ink-primary); }
.lang-switch-menu button.is-active { color: var(--accent-scan); }

.mobile-menu-toggle { display: none; }
.mobile-menu { display: none; }

@media (max-width: 860px) {
  .main-nav ul { display: none; }
  .mobile-menu-toggle { display: inline-flex; }
  .mobile-menu {
    display: block;
    max-height: 0; overflow: hidden;
    border-top: 1px solid transparent;
    transition: max-height var(--dur-med) var(--ease-out);
    background: var(--bg-base);
  }
  .mobile-menu.is-open { max-height: 400px; border-top-color: var(--line-hair); }
  .mobile-menu ul { display: flex; flex-direction: column; padding: var(--sp-4) var(--sp-5); gap: var(--sp-1); }
  .mobile-menu a { display: block; padding: 0.7rem 0; font-size: var(--fs-body-l); }
}

/* ---- App rail (for logged-in app pages: scan, explore, wallet, profile) ---- */
.app-rail {
  background: var(--bg-void);
  border-right: 1px solid var(--line-hair);
  display: flex; flex-direction: column;
  align-items: center;
  padding: var(--sp-4) 0;
  position: sticky; top: 0; height: 100vh;
}
.app-rail .brand-mark { margin-bottom: var(--sp-6); }
.rail-nav { display: flex; flex-direction: column; gap: var(--sp-2); width: 100%; align-items: center; flex: 1; }
.rail-link {
  width: 52px; height: 52px; border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-tertiary); position: relative;
  transition: all var(--dur-fast);
}
.rail-link:hover { color: var(--ink-primary); background: var(--bg-surface); }
.rail-link.is-active { color: var(--accent-scan); background: var(--bg-surface); }
.rail-link.is-active::before {
  content: ''; position: absolute; left: -8px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 22px; background: var(--accent-scan); border-radius: var(--r-full);
}
.rail-link .rail-tooltip {
  position: absolute; left: calc(100% + 12px); top: 50%; transform: translateY(-50%);
  background: var(--bg-surface-2); border: 1px solid var(--line-strong);
  padding: 0.35rem 0.65rem; border-radius: var(--r-sm); font-size: var(--fs-caption);
  white-space: nowrap; opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--dur-fast); z-index: 70;
}
.rail-link:hover .rail-tooltip { opacity: 1; visibility: visible; }

.rail-footer { display: flex; flex-direction: column; gap: var(--sp-2); align-items: center; }

@media (max-width: 860px) {
  .app-rail {
    position: fixed; bottom: 0; left: 0; right: 0; top: auto; height: 64px;
    flex-direction: row; border-right: none; border-top: 1px solid var(--line-hair);
    z-index: 80; padding: 0 var(--sp-2);
  }
  .app-rail .brand-mark, .rail-footer { display: none; }
  .rail-nav { flex-direction: row; justify-content: space-around; }
  .rail-link .rail-tooltip { display: none; }
}

/* ---- App topbar (paired with rail) ---- */
.app-topbar {
  height: var(--header-h);
  border-bottom: 1px solid var(--line-hair);
  display: flex; align-items: center; justify-content: space-between;
  padding-inline: var(--sp-6);
  position: sticky; top: 0; z-index: 40;
  background: rgba(16,20,28,0.82); backdrop-filter: blur(10px);
}
@media (max-width: 640px) { .app-topbar { padding-inline: var(--sp-4); } }

.app-main { min-height: 100vh; padding-bottom: var(--sp-9); }
@media (max-width: 860px) { .app-main { padding-bottom: 80px; } }

/* ---- User menu ---- */
.user-menu { position: relative; }
.user-menu-btn {
  display: flex; align-items: center; gap: 0.55rem;
  background: transparent; border: 1px solid var(--line-hair);
  border-radius: var(--r-full); padding: 0.3rem 0.9rem 0.3rem 0.3rem;
}
.user-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-scan), #7A9E0E);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-on-accent); font-weight: 700; font-size: 0.8rem;
}
.user-menu-dropdown {
  position: absolute; top: calc(100% + 10px); right: 0;
  background: var(--bg-surface); border: 1px solid var(--line-strong);
  border-radius: var(--r-md); box-shadow: var(--shadow-3);
  min-width: 220px; padding: var(--sp-2); z-index: 60;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all var(--dur-fast) var(--ease-out);
}
.user-menu.is-open .user-menu-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.user-menu-dropdown a, .user-menu-dropdown button {
  display: flex; align-items: center; gap: 0.6rem; width: 100%;
  padding: 0.6rem 0.7rem; border-radius: var(--r-sm);
  color: var(--ink-secondary); font-size: var(--fs-body); background: transparent; border: none; text-align: left;
}
.user-menu-dropdown a:hover, .user-menu-dropdown button:hover { background: var(--bg-surface-2); color: var(--ink-primary); }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line-hair);
  padding-block: var(--sp-7);
  background: var(--bg-void);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--sp-6);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 { font-size: var(--fs-caption); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-tertiary); margin-bottom: var(--sp-4); font-family: var(--font-body); font-weight: 700; }
.footer-col ul { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-col a { color: var(--ink-secondary); font-size: var(--fs-body); transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--accent-scan); }
.footer-bottom {
  margin-top: var(--sp-7); padding-top: var(--sp-5);
  border-top: 1px solid var(--line-hair);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-3);
  color: var(--ink-tertiary); font-size: var(--fs-caption);
}
.footer-socials { display: flex; gap: var(--sp-2); }
.footer-socials a {
  width: 34px; height: 34px; border-radius: var(--r-md);
  border: 1px solid var(--line-hair); display: flex; align-items: center; justify-content: center;
  color: var(--ink-secondary);
}
.footer-socials a:hover { color: var(--accent-scan); border-color: var(--accent-scan); }