/* Component layer — nav, buttons, cards, badges, alerts, fields, page header,
   footer, empty states, tracker status. Class names preserved from the
   pre-refresh system; new component classes added per docs/WEBSITE_DESIGN_SPEC.md. */

/* ═══════════════ Navbar ═══════════════ */
.navbar {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: var(--sp-4);
    min-height: var(--nav-h);
    padding: 0 var(--sp-6);
    background: var(--nav-bg, rgba(255, 255, 255, 0.82));
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}
.brand {
    display: inline-flex; align-items: center; gap: var(--sp-2);
    text-decoration: none; font-weight: 700; color: var(--text);
    flex-shrink: 0;
}
.brand img { height: 32px; width: auto; }
.brand span { font-family: var(--font-display); font-size: 18px; letter-spacing: -0.01em; }

.nav-menu {
    display: flex; align-items: center; gap: var(--sp-2);
    flex: 1;
}
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
    padding: 8px 14px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 500; color: var(--text-muted);
    text-decoration: none; transition: color var(--dur), background var(--dur);
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--primary-strong); background: var(--primary-soft); }
.nav-actions { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; }

/* Hamburger — hidden on desktop, shown < md */
.nav-toggle {
    display: none;
    align-items: center; justify-content: center;
    width: 44px; height: 44px; margin-left: auto;
    background: transparent; border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm); color: var(--text);
    font-size: 18px; cursor: pointer;
}

/* Account menu — click/keyboard toggle (no hover-only) */
.user-menu { position: relative; }
.user-toggle {
    display: inline-flex; align-items: center; gap: var(--sp-2);
    padding: 8px 14px; border: 1px solid var(--border-strong);
    border-radius: var(--radius-full); background: var(--surface);
    color: var(--text); font-weight: 500; font-size: 14px;
    font-family: inherit; cursor: pointer;
    transition: border-color var(--dur), background var(--dur);
}
.user-toggle:hover { border-color: var(--primary); background: var(--primary-soft); }
.user-dropdown {
    position: absolute; top: calc(100% + 8px); right: 0;
    min-width: 230px; max-height: min(78vh, 560px); overflow-y: auto;
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--radius); box-shadow: var(--shadow-lg);
    padding: 6px;
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
/* Shown via JS (.is-open) or keyboard focus fallback when JS is absent. No :hover. */
.user-menu.is-open .user-dropdown,
.user-menu .user-dropdown:focus-within {
    opacity: 1; visibility: visible; transform: translateY(0);
}
.user-dropdown a {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; border-radius: var(--radius-sm);
    color: var(--text); text-decoration: none; font-size: 14px; font-weight: 500;
    transition: background 0.15s;
}
.user-dropdown a:hover, .user-dropdown a:focus-visible { background: var(--surface-2); }
.user-dropdown i { width: 16px; text-align: center; color: var(--text-muted); }
.user-dropdown a.danger { color: var(--danger); }
.user-dropdown a.danger:hover { background: var(--danger-soft); }
.user-dropdown a.danger i { color: var(--danger); }
.user-dropdown .dropdown-section {
    padding: 10px 12px 4px; font-size: 10px; font-weight: 700;
    letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim);
}
.user-dropdown .dropdown-section:first-child { padding-top: 4px; }
.user-dropdown hr { border: none; border-top: 1px solid var(--border); margin: 6px 4px; }

/* ═══════════════ Buttons ═══════════════ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
    padding: 12px 22px; min-height: 44px;
    border-radius: var(--radius-full);
    font-weight: 600; font-size: 15px; font-family: inherit;
    text-decoration: none; border: 1px solid transparent; cursor: pointer;
    transition: transform var(--dur) var(--ease), background var(--dur), border-color var(--dur), box-shadow var(--dur);
}
.btn i { transition: transform var(--dur) var(--ease); }
.btn:hover i.fa-arrow-right { transform: translateX(2px); }
.btn-sm { padding: 8px 14px; min-height: 38px; font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--btn-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { background: var(--surface); border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-strong); }
.btn-subtle { background: var(--surface-2); color: var(--text); }
.btn-subtle:hover { background: var(--surface-3); }
.btn-danger { background: var(--danger-fill); color: #fff; }
.btn-danger:hover { filter: brightness(0.95); }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.btn[aria-busy="true"] .btn-spinner { display: inline-block; }
.btn-spinner {
    display: none; width: 15px; height: 15px;
    border: 2px solid rgba(255,255,255,0.5); border-top-color: #fff;
    border-radius: 50%; animation: btn-spin 0.7s linear infinite;
}
.btn-ghost .btn-spinner, .btn-subtle .btn-spinner { border-color: rgba(37,99,235,0.35); border-top-color: var(--primary); }
@keyframes btn-spin { to { transform: rotate(360deg); } }

/* ═══════════════ Cards ═══════════════ */
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: var(--sp-6);
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur) var(--ease), border-color var(--dur), box-shadow var(--dur);
}
.card--hover:hover { border-color: var(--border-strong); transform: translateY(-3px); box-shadow: var(--shadow-md); }

/* ═══════════════ Status badges (never color-only) ═══════════════ */
.badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 10px; border-radius: var(--radius-full);
    font-size: 12px; font-weight: 600; line-height: 1.4;
    border: 1px solid transparent;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.badge--ok      { color: var(--ok);      background: var(--ok-soft);      border-color: var(--ok-border); }
.badge--warn    { color: var(--warn);    background: var(--warn-soft);    border-color: var(--warn-border); }
.badge--danger  { color: var(--danger);  background: var(--danger-soft);  border-color: var(--danger-border); }
.badge--info    { color: var(--info);    background: var(--info-soft);    border-color: var(--info-border); }
.badge--offline { color: var(--offline); background: var(--offline-soft); border-color: var(--border); }

/* ═══════════════ Alerts / banners ═══════════════ */
.alert {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 14px 16px; border-radius: var(--radius);
    font-size: 14px; font-weight: 500; margin-bottom: var(--sp-5);
    border: 1px solid transparent;
}
.alert i { margin-top: 2px; flex-shrink: 0; }
.alert--info    { background: var(--info-soft);   color: var(--info);   border-color: var(--info-border); }
.alert--success { background: var(--ok-soft);     color: var(--ok);     border-color: var(--ok-border); }
.alert--warn    { background: var(--warn-soft);   color: var(--warn);   border-color: var(--warn-border); }
.alert--danger  { background: var(--danger-soft); color: var(--danger); border-color: var(--danger-border); }
.alert ul { margin: 4px 0 0; padding-left: 18px; }

/* ═══════════════ Form fields (shared) ═══════════════ */
.field { margin-bottom: var(--sp-5); }
.field > label, .field__label {
    display: block; font-weight: 600; margin-bottom: var(--sp-2);
    color: var(--text); font-size: 14px;
}
.field__label .req { color: var(--danger); }
.field input, .field textarea, .field select {
    width: 100%; padding: 12px 14px;
    font-family: inherit; font-size: 15px; color: var(--text);
    border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
    background: var(--surface);
    transition: border-color var(--dur), box-shadow var(--dur);
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-dim); }
.field input:focus, .field textarea:focus, .field select:focus {
    outline: none; border-color: var(--primary); box-shadow: var(--focus-ring);
}
.field textarea { min-height: 140px; resize: vertical; }
.field__hint { display: block; margin-top: 6px; font-size: 13px; color: var(--text-muted); }
.field__error { display: none; margin-top: 6px; font-size: 13px; color: var(--danger); font-weight: 600; }
.field.has-error input, .field.has-error textarea { border-color: var(--danger); }
.field.has-error .field__error { display: block; }

/* honeypot */
.honeypot-field { position: absolute; left: -9999px; top: 0; height: 0; width: 0; overflow: hidden; }

/* ═══════════════ Page header / hero (interior pages) ═══════════════ */
.eyebrow {
    display: inline-block; padding: 5px 12px; border-radius: var(--radius-full);
    background: var(--primary-soft); color: var(--primary-strong);
    font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.09em; margin-bottom: var(--sp-4);
}
.gradient-text {
    background: linear-gradient(120deg, var(--primary), var(--accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.section-heading { text-align: center; max-width: 720px; margin: 0 auto var(--sp-8); }
.section-heading h2 { font-size: clamp(28px, 4.2vw, 44px); }
.section-heading p { color: var(--text-muted); font-size: 17px; }

.page-hero { position: relative; padding: var(--sp-9) var(--sp-5) var(--sp-8); text-align: center; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: var(--grad-hero); pointer-events: none; }
.page-hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.page-hero h1 { font-size: clamp(32px, 5vw, 54px); margin-bottom: var(--sp-4); }
.page-hero p { font-size: clamp(16px, 1.8vw, 19px); color: var(--text-muted); max-width: 640px; margin: 0 auto; }

section.block { padding: var(--sp-9) var(--sp-5); position: relative; }

/* ═══════════════ Empty state ═══════════════ */
.empty-state { text-align: center; padding: var(--sp-8) var(--sp-5); color: var(--text-muted); }
.empty-state .empty-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 56px; height: 56px; border-radius: var(--radius);
    background: var(--surface-2); color: var(--text-dim); font-size: 24px; margin-bottom: var(--sp-4);
}
.empty-state h3 { font-size: 18px; margin-bottom: 6px; }
.empty-state p { margin: 0 auto var(--sp-4); max-width: 380px; font-size: 14px; }

/* ═══════════════ Tracker status strip (portal) ═══════════════ */
.tracker-status { display: inline-flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }

/* ═══════════════ Footer ═══════════════ */
footer.site-footer { padding: var(--sp-8) var(--sp-5) var(--sp-7); border-top: 1px solid var(--border); background: var(--surface); }
.footer-inner { max-width: var(--container); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--sp-7); }
.footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 320px; margin: 12px 0 0; }
.footer-col h4 { font-family: var(--font-body); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.09em; color: var(--text-muted); margin-bottom: 14px; }
.footer-col a { display: block; color: var(--text-muted); text-decoration: none; font-size: 14px; padding: 4px 0; transition: color 0.15s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { max-width: var(--container); margin: var(--sp-7) auto 0; padding-top: var(--sp-5); border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--text-dim); font-size: 13px; }

/* ═══════════════ Responsive nav + footer ═══════════════ */
@media (max-width: 860px) {
    .navbar { padding: 0 var(--sp-4); }
    .nav-toggle { display: inline-flex; }
    .nav-menu {
        position: absolute; top: var(--nav-h); left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: var(--sp-1);
        padding: var(--sp-4); background: var(--surface);
        border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md);
        display: none;
    }
    .nav-menu.is-open { display: flex; }
    .nav-links { flex-direction: column; align-items: stretch; gap: 2px; }
    .nav-links a { padding: 12px 14px; }
    .nav-actions { margin-left: 0; flex-direction: column; align-items: stretch; gap: var(--sp-2); margin-top: var(--sp-2); }
    .nav-actions .btn { width: 100%; }
    .user-menu { width: 100%; }
    .user-toggle { width: 100%; justify-content: space-between; }
    .user-dropdown { position: static; box-shadow: none; border: none; max-height: none; padding: 4px 0 0; }
}
@media (max-width: 900px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-inner { grid-template-columns: 1fr; } section.block { padding: var(--sp-8) var(--sp-4); } .page-hero { padding: var(--sp-8) var(--sp-4) var(--sp-7); } }

/* ── PWA banners + offline shell (Phase D) ─────────────────────────────── */
.pwa-stack {
    position: fixed; bottom: 16px; left: 16px; right: 16px; z-index: 60;
    display: flex; flex-direction: column; gap: 10px; pointer-events: none;
    max-width: 480px;
}
.pwa-card {
    pointer-events: auto;
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    background: var(--surface); color: var(--text);
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    box-shadow: var(--shadow-lg); padding: 14px 16px; font-size: 14px; line-height: 1.45;
}
.pwa-card-actions { display: flex; gap: 8px; flex-shrink: 0; }
.pwa-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.pwa-dot.warn { background: var(--warn); }

.offline-banner { display: inline-flex; align-items: center; gap: 8px;
    background: var(--warn-soft); color: var(--warn); border: 1px solid var(--warn-border);
    border-radius: var(--radius-full); padding: 8px 16px; font-weight: 600; }
.offline-kv .offline-row { display: flex; justify-content: space-between; gap: 16px;
    padding: 8px 0; border-bottom: 1px solid var(--border); }
.offline-kv .offline-row:last-child { border-bottom: none; }
.offline-kv dt { color: var(--text-muted); }
.offline-kv dd { font-weight: 600; text-align: right; }
.offline-events { list-style: none; padding: 0; margin: 0; }
.offline-events li { display: flex; justify-content: space-between; gap: 16px;
    padding: 8px 0; border-bottom: 1px solid var(--border); }
.offline-events li:last-child { border-bottom: none; }
.offline-ev-when { color: var(--text-muted); white-space: nowrap; }

/* ── Passkeys + dialogs (Phase E) ─────────────────────────────────────── */
.auth-divider { display: flex; align-items: center; gap: 12px; margin: 18px 0 14px;
    color: var(--text-dim); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border-strong); }

.passkey-status { min-height: 20px; margin-top: 10px; font-size: 14px; color: var(--text-muted); }
.passkey-status.error { color: var(--danger); font-weight: 600; }

.passkey-list { list-style: none; padding: 0; margin: 0; }
.passkey-row { display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 12px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.passkey-row:last-child { border-bottom: none; }
.pk-body { display: flex; flex-direction: column; gap: 2px; min-width: 200px; }
.pk-name { font-weight: 600; }
.pk-meta { color: var(--text-muted); font-size: 13px; }
.pk-actions { display: flex; gap: 8px; }
.pk-remove { color: var(--danger); }

.tb-dialog { border: 1px solid var(--border-strong); border-radius: var(--radius);
    background: var(--surface); color: var(--text); box-shadow: var(--shadow-lg);
    padding: 24px; max-width: 420px; width: calc(100vw - 48px); }
.tb-dialog h2 { font-size: 1.15rem; margin-bottom: 6px; }
.tb-dialog::backdrop { background: rgba(15, 23, 42, 0.55); }
.tb-dialog-actions { display: flex; gap: 10px; margin-top: 16px; }