/**
 * SmartSwing AI — Canonical app-shell styles.
 *
 * Single source of truth for the chrome shared across logged-in tool pages
 * (dashboard, analyze, library, settings, coach-dashboard, marketing). Pairs
 * with shared-footer.css (for marketing pages) — together they end the era
 * of every page hand-rolling its own topbar + bottom-nav + hamburger.
 *
 * What it provides:
 *   .app-topbar             — sticky top bar (logo · desktop nav · user menu)
 *   .app-topbar-nav         — desktop nav row (hidden < 1024px)
 *   .app-topbar-hamburger   — mobile menu trigger (shown < 1024px)
 *   .app-mobile-drawer      — slide-in panel triggered by hamburger
 *   .app-bottom-nav         — fixed bottom tab-bar on mobile (< 1024px)
 *   .app-bottom-nav a.active — current-page indicator (volt green)
 *
 * Pages opt in by:
 *   1. <link rel="stylesheet" href="./app-shell.css">
 *   2. Including the canonical markup (see app-shell.js for renderer).
 *
 * Tokens: consumes brand-tokens.css `--ss-*` vars when present, falls back
 * to literal values otherwise — works on pages that haven't migrated yet.
 */

/* ── Topbar ──────────────────────────────────────────────────────────────── */
.app-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 5, 0.95);
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ss-line, rgba(255,255,255,0.08));
  padding: 0 12px;
  margin-bottom: 0;
}
.app-topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 12px 8px;
  min-height: 64px;
  padding-top: calc(12px + env(safe-area-inset-top, 0));
}
.app-topbar-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--ss-text, #f5f5f7);
}
.app-topbar-brand img {
  display: block;
  height: 40px;
  width: auto;
  max-width: 200px;
}

.app-topbar-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  justify-content: center;
}
.app-topbar-nav a {
  text-decoration: none;
  color: rgba(245, 245, 247, 0.65);
  font-family: "DM Sans", sans-serif;
  font-weight: 700;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 160ms ease, background 160ms ease;
}
.app-topbar-nav a:hover,
.app-topbar-nav a:focus-visible {
  color: var(--ss-text, #f5f5f7);
  background: rgba(255, 255, 255, 0.05);
}
.app-topbar-nav a.active {
  color: var(--ss-volt, #39ff14);
  background: rgba(57, 255, 20, 0.08);
}

.app-topbar-user {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ss-line, rgba(255,255,255,0.08));
  text-decoration: none;
  color: var(--ss-text, #f5f5f7);
  font-size: 13px;
  font-weight: 700;
}
.app-topbar-user .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #39ff14, #ffd84d);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #050505;
  font-weight: 800;
  font-size: 13px;
}

/* ── Mobile hamburger + drawer ──────────────────────────────────────────── */
.app-topbar-hamburger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--ss-line, rgba(255,255,255,0.10));
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--ss-text, #f5f5f7);
  flex-shrink: 0;
  transition: background 160ms ease;
  -webkit-tap-highlight-color: transparent;
}
.app-topbar-hamburger:hover { background: rgba(255, 255, 255, 0.1); }

.app-mobile-drawer {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.96);
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  z-index: 300;
  display: none;
  padding: 24px 20px;
  padding-top: calc(24px + env(safe-area-inset-top, 0));
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}
.app-mobile-drawer.is-open { display: flex; }
.app-mobile-drawer-close {
  align-self: flex-end;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 0;
  color: var(--ss-text, #f5f5f7);
  font-size: 24px;
  cursor: pointer;
}
.app-mobile-drawer a {
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ss-line, rgba(255,255,255,0.08));
  color: var(--ss-text, #f5f5f7);
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  transition: background 160ms ease, color 160ms ease;
}
.app-mobile-drawer a:hover,
.app-mobile-drawer a.active {
  background: rgba(57, 255, 20, 0.1);
  color: var(--ss-volt, #39ff14);
}

@media (max-width: 1024px) {
  .app-topbar-nav    { display: none !important; }
  .app-topbar-hamburger { display: inline-flex !important; }
}

/* ── Bottom nav (fixed tab bar on mobile) ───────────────────────────────── */
.app-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(5, 5, 5, 0.97);
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  border-top: 1px solid var(--ss-line, rgba(255,255,255,0.10));
  height: 64px;
  padding: 0 4px;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.app-bottom-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: rgba(245, 245, 247, 0.45);
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 4px 0;
  transition: color 180ms ease;
  -webkit-tap-highlight-color: transparent;
}
.app-bottom-nav a svg {
  opacity: 0.5;
  transition: opacity 180ms ease;
}
.app-bottom-nav a.active        { color: var(--ss-volt, #39ff14); }
.app-bottom-nav a.active svg    { opacity: 1; }

@media (hover: hover) and (pointer: fine) {
  .app-bottom-nav a:hover     { color: var(--ss-volt, #39ff14); }
  .app-bottom-nav a:hover svg { opacity: 1; }
}

@media (max-width: 1024px) {
  .app-bottom-nav { display: flex !important; }
  /* Reserve space at the bottom of the page so content isn't hidden behind
     the fixed bar. Pages should add `padding-bottom: 80px` to <main>. */
}

@media (prefers-reduced-motion: reduce) {
  .app-topbar-nav a,
  .app-topbar-hamburger,
  .app-mobile-drawer a,
  .app-bottom-nav a,
  .app-bottom-nav a svg {
    transition: none;
  }
}