/* shell.css — CheckMyARM application shell: the top nav bar rendered by
   nav.js into every page's <div id="app-shell"></div>. Page-specific content
   styling stays wherever it already lives (assessment.css for Results/
   Workspace, each page's own inline <style> otherwise) — this file is
   scoped to shell chrome only. See CLAUDE.md, Application Shell milestone. */

.shell-nav {
    display: flex;
    align-items: center;
    padding: 0.85rem 2rem;
    border-bottom: 1px solid #1e293b;
    position: relative;
}

.shell-desktop-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1.25rem;
}

/* LOGO + SUBTITLE — stacked, not side-by-side, so the assessment context
   never has to compete with the primary nav for horizontal space at
   intermediate widths (see CLAUDE.md, Application Shell milestone). The
   subtitle stays a sibling of the logo <a>, not a child of it, so it never
   becomes part of the clickable link — it must stay informational only. */
.shell-brand {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    flex-shrink: 0;
}

.shell-logo-link {
    text-decoration: none;
}

.shell-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #3b82f6;
    letter-spacing: -0.5px;
}

.shell-logo img {
    height: 28px;
    width: auto;
    margin-right: 0.5rem;
}

.shell-logo span {
    color: #f1f5f9;
}

/* Deliberately only ever rendered on the homepage — see logoMarkup() in nav.js. */
.shell-logo .tm {
    font-size: 0.55em;
    font-weight: 400;
    vertical-align: super;
    color: #64748b;
    margin-left: 0.1em;
}

/* Subtle, non-clickable, never a verdict — see CLAUDE.md. */
.shell-subtitle {
    font-size: 0.72rem;
    color: #64748b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 260px;
}

/* MODE MENUS (desktop) */
.shell-desktop-menus {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    flex: 1;
    justify-content: center;
}

.shell-dropdown {
    position: relative;
}

.shell-mode-btn {
    background: none;
    border: none;
    font: inherit;
    font-size: 0.9rem;
    color: #94a3b8;
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    white-space: nowrap;
}

.shell-mode-btn:hover {
    background: #1e293b;
    color: #f1f5f9;
}

.shell-mode-static {
    color: #94a3b8;
    cursor: default;
}

.shell-mode-static:hover {
    background: none;
    color: #94a3b8;
}

.shell-mode-active {
    color: #93c5fd;
    font-weight: 700;
}

.shell-caret {
    font-size: 0.6rem;
    opacity: 0.6;
}

.shell-dropdown-panel {
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    min-width: 220px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 10px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    padding: 0.4rem;
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

/* [hidden] has the same specificity as the class rule above, and source
   order alone would let this stylesheet silently win over the UA default
   (display:none) — spelling it out here removes that ambiguity. */
.shell-dropdown-panel[hidden] {
    display: none;
}

.shell-dropdown-panel-right {
    left: auto;
    right: 0;
}

.shell-menu-item {
    display: block;
    padding: 0.55rem 0.7rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: #e2e8f0;
    text-decoration: none;
    white-space: nowrap;
}

.shell-menu-item:hover {
    background: #263548;
    color: #f1f5f9;
}

/* RIGHT CLUSTER (desktop) */
.shell-desktop-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.shell-cta {
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
}

.shell-cta-primary {
    background: #3b82f6;
    color: white;
}

.shell-cta-primary:hover {
    background: #2563eb;
}

.shell-cta-secondary {
    background: transparent;
    border: 1px solid #334155;
    color: #94a3b8;
}

.shell-cta-secondary:hover {
    border-color: #3b82f6;
    color: #f1f5f9;
}

.shell-signin-btn,
.shell-account-btn {
    background: #1e293b;
    border: 1px solid #334155;
    color: #f1f5f9;
    font: inherit;
    font-size: 0.85rem;
    padding: 0.4rem 0.7rem;
    border-radius: 20px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.shell-signin-btn:hover,
.shell-account-btn:hover {
    border-color: #3b82f6;
}

.shell-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #2dd4bf);
    color: #0b1220;
    font-size: 0.65rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.shell-role-badge {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.1rem 0.4rem;
    border-radius: 5px;
}

.shell-role-researcher {
    background: rgba(45, 212, 191, 0.15);
    color: #2dd4bf;
}

.shell-role-admin {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

/* HAMBURGER + MOBILE PANEL — hidden on desktop by default */
.shell-hamburger {
    display: none;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: #1e293b;
    border: 1px solid #334155;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
    flex-shrink: 0;
}

.shell-hamburger span {
    width: 16px;
    height: 2px;
    background: #94a3b8;
    border-radius: 2px;
}

.shell-mobile-panel {
    display: none;
}

@media (max-width: 860px) {
    .shell-desktop-menus,
    .shell-desktop-right {
        display: none;
    }

    .shell-subtitle {
        max-width: 160px;
    }

    .shell-hamburger {
        display: flex;
    }

    .shell-mobile-panel[hidden] {
        display: none;
    }

    .shell-mobile-panel:not([hidden]) {
        display: flex;
        flex-direction: column;
        gap: 0.6rem;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #0f172a;
        border-top: 1px solid #1e293b;
        padding: 1rem;
        overflow-y: auto;
        z-index: 70;
    }
}

.shell-mobile-subtitle {
    font-size: 0.78rem;
    color: #64748b;
    padding: 0 0.2rem;
}

.shell-mobile-identity {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 0.65rem 0.8rem;
    font-size: 0.85rem;
    color: #f1f5f9;
}

.shell-mobile-cta-row {
    display: flex;
    gap: 0.5rem;
}

.shell-mobile-cta-row .shell-cta {
    flex: 1;
    text-align: center;
}

.shell-accordion {
    border: 1px solid #334155;
    border-radius: 10px;
    overflow: hidden;
}

.shell-accordion-head {
    width: 100%;
    text-align: left;
    background: #1e293b;
    border: none;
    color: #f1f5f9;
    font: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 0.7rem 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.shell-accordion-body {
    padding: 0.3rem 0.5rem 0.6rem 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.shell-accordion-body[hidden] {
    display: none;
}

.shell-accordion-empty {
    padding: 0.7rem 0.9rem;
    font-size: 0.8rem;
    color: #64748b;
    font-style: italic;
}