/* ── App Shell Layout ─────────────────────────────────────────────────────── */

:root {
    --sidebar-w:      240px;
    --sidebar-w-col:   64px;   /* collapsed */
    --topbar-h:        56px;
    --bottom-nav-h:    60px;
    --transition:      .22s ease;
}

/* ── Shell ── */
.app-shell {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
    width: var(--sidebar-w);
    min-height: 100vh;
    background: var(--bg-2);
    color: var(--dim);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    z-index: 200;
    border-right: 1px solid var(--border);
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-w-col); }

/* Logo */
.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 0 16px;
    height: var(--topbar-h);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    text-decoration: none;
}
.sidebar__logo-icon {
    flex-shrink: 0;
    width: 38px; height: 38px;
    border-radius: 11px;
    background: var(--accent-grad);
    color: var(--on-accent);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 16px var(--accent-glow);
    padding: 7px;
}
.sidebar__logo-text {
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: .02em;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition);
}
.sidebar.collapsed .sidebar__logo-text { opacity: 0; width: 0; }

/* Nav items */
.sidebar__nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
    overflow-x: hidden;
}
.sidebar__nav a,
.sidebar__nav button {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 11px 13px;
    border-radius: 12px;
    color: var(--dim);
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
    position: relative;
}
.sidebar__nav a:hover,
.sidebar__nav button:hover { background: var(--surface-2); color: var(--text); }
.sidebar__nav a.active,
.sidebar__nav a[aria-current="page"] {
    background: var(--accent);
    color: var(--on-accent);
    box-shadow: 0 6px 16px var(--accent-glow);
}
.sidebar__nav .nav-icon { flex-shrink: 0; width: 20px; height: 20px; }
.sidebar__nav .nav-label {
    overflow: hidden;
    transition: opacity var(--transition), width var(--transition);
}
.sidebar.collapsed .nav-label { opacity: 0; width: 0; }

/* Badge on nav item */
.nav-badge {
    margin-left: auto;
    background: #ef4444;
    color: #fff;
    font-size: .7rem;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 999px;
    min-width: 18px;
    text-align: center;
    flex-shrink: 0;
}
/* Empty badge = zero count: hide it instead of showing a bare red pill.
   Higher specificity than `.nav-badge`, lower than the collapsed-hide rule. */
.nav-badge:empty { display: none; }
.sidebar.collapsed .nav-badge { display: none; }

.sidebar__logo-icon svg { width: 24px; height: 24px; }

/* Section label */
.sidebar__section {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--faint);
    padding: 16px 12px 6px;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition);
}
.sidebar.collapsed .sidebar__section { opacity: 0; }

/* User block */
.sidebar__user {
    padding: 12px 10px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}
.sidebar__user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 12px;
    margin-bottom: 4px;
}
.sidebar__avatar {
    width: 34px; height: 34px;
    border-radius: 11px;
    background: var(--accent-grad);
    display: flex; align-items: center; justify-content: center;
    color: var(--on-accent); font-size: .85rem; font-weight: 800;
    flex-shrink: 0;
}
.sidebar__user-text {
    overflow: hidden;
    transition: opacity var(--transition);
}
.sidebar.collapsed .sidebar__user-text { opacity: 0; width: 0; }
.sidebar__username {
    font-size: .85rem; font-weight: 700; color: var(--text);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar__role {
    font-size: .75rem; color: var(--dim);
    white-space: nowrap; text-transform: capitalize;
}

/* Collapse toggle */
.sidebar__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 8px;
    background: none;
    border: none;
    color: var(--faint);
    cursor: pointer;
    border-radius: 10px;
    transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.sidebar__toggle:hover { background: var(--surface-2); color: var(--text); }

/* Logout button — visually a nav item (markup reuses the .sidebar__nav class
   on the <button>, so reset the container styles it inherits). */
.logout-btn.sidebar__nav {
    flex: none;
    overflow: visible;
    padding: 11px 13px;
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    border-radius: 12px;
    color: var(--dim);
    font: inherit;
    font-size: .9rem;
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.logout-btn.sidebar__nav:hover { background: var(--surface-2); color: var(--danger); }

/* ── Main content area ── */
.app-main {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition);
}
.app-shell.sidebar-collapsed .app-main { margin-left: var(--sidebar-w-col); }

/* ── Top bar ── */
.topbar {
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    background: color-mix(in srgb, var(--bg-2) 80%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.topbar__toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dim);
    padding: 8px;
    border-radius: 10px;
    display: flex;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.topbar__toggle:hover { background: var(--surface-2); color: var(--text); }
.topbar__title {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -.01em;
    color: var(--text);
    flex: 1;
}
.topbar__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.topbar__icon-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    cursor: pointer;
    color: var(--dim);
    padding: 9px;
    border-radius: 11px;
    position: relative;
    display: flex;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.topbar__icon-btn:hover { background: var(--surface-2); color: var(--accent); border-color: var(--accent); }
.topbar__notif-dot {
    position: absolute;
    top: 6px; right: 6px;
    width: 8px; height: 8px;
    background: #fb7185;
    border-radius: 50%;
    border: 2px solid var(--bg-2);
}
/* Счётчик-бейдж (число непрочитанных). Видимость переключает notifications.js. */
.topbar__notif-badge {
    display: none;                 /* JS ставит display:flex при count>0 */
    position: absolute;
    top: 4px; right: 4px;
    min-width: 16px; height: 16px;
    padding: 0 3px;
    background: #ef4444;
    color: #fff;
    font-size: .6rem;
    font-weight: 700;
    line-height: 1;
    border-radius: 999px;
    align-items: center;
    justify-content: center;
}

/* ── Page content ── */
.page-content {
    flex: 1;
    padding: 28px 28px;
}
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.page-header__title { font-size: 1.4rem; font-weight: 700; color: var(--c-text); }
.page-header__sub   { font-size: .9rem; color: var(--c-muted); margin-top: 4px; }

/* ── Mobile: bottom navigation ── */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--bottom-nav-h);
    background: color-mix(in srgb, var(--bg-2) 86%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    z-index: 300;
    padding: 0 4px;
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.bottom-nav__items {
    display: flex;
    height: 100%;
}
.bottom-nav__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--faint);
    text-decoration: none;
    font-size: .6rem;
    font-weight: 700;
    letter-spacing: -.01em;
    text-align: center;
    line-height: 1.1;
    padding: 6px 3px;
    transition: color var(--dur) var(--ease);
    min-height: 44px;          /* touch target */
    position: relative;
}
.bottom-nav__item.active,
.bottom-nav__item[aria-current="page"] { color: var(--accent); }
.bottom-nav__item svg { width: 22px; height: 22px; }
.bottom-nav__badge {
    position: absolute;
    top: 6px; right: calc(50% - 18px);
    background: #ef4444;
    color: #fff;
    font-size: .6rem;
    font-weight: 700;
    padding: 0 4px;
    border-radius: 999px;
    min-width: 16px;
    text-align: center;
}
.bottom-nav__badge:empty { display: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .sidebar        { transform: translateX(-100%); width: var(--sidebar-w); }
    .sidebar.mobile-open { transform: translateX(0); }
    /* Match the specificity of `.app-shell.sidebar-collapsed .app-main` so the
       mobile reset wins by source order instead of needing !important. */
    .app-shell .app-main,
    .app-shell.sidebar-collapsed .app-main { margin-left: 0; padding-bottom: var(--bottom-nav-h); }
    .bottom-nav     { display: flex; }
    .page-content   { padding: 20px 16px; }
    .topbar         { padding: 0 16px; }
}

/* Mobile sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 199;
}
.sidebar-overlay.active { display: block; }

/* ── Stats cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    transition: transform .15s var(--ease), box-shadow var(--dur) var(--ease);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.stat-card__value { font-size: 1.8rem; font-weight: 800; color: var(--text); line-height: 1; letter-spacing: -.02em; }
.stat-card__label { font-size: .82rem; color: var(--dim); margin-top: 6px; font-weight: 600; }
.stat-card__icon  { color: var(--accent); margin-bottom: 12px; }
.stat-card--primary { background: var(--accent-grad); border-color: transparent; box-shadow: 0 12px 30px var(--accent-glow); }
.stat-card--primary .stat-card__value,
.stat-card--primary .stat-card__label,
.stat-card--primary .stat-card__icon { color: var(--on-accent); }

/* ── Data table ── */
.data-table-wrap { overflow-x: auto; }
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
.data-table th {
    text-align: left;
    padding: 10px 14px;
    font-size: .78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--c-muted);
    border-bottom: 2px solid var(--c-border);
    white-space: nowrap;
}
.data-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--c-border);
    vertical-align: middle;
    color: var(--c-text);
}
.data-table tr:hover td { background: var(--surface-2); }
.data-table tr:last-child td { border-bottom: none; }

/* ── Badges / Pills ── */
.pill {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
}
.pill--green  { background: var(--success-bg); color: var(--success-fg); }
.pill--blue   { background: var(--info-bg);    color: var(--info-fg); }
.pill--yellow { background: var(--warning-bg); color: var(--warning-fg); }
.pill--red    { background: var(--danger-bg);  color: var(--danger-fg); }
.pill--gray   { background: var(--neutral-bg); color: var(--neutral-fg); }

/* ── Star rating ── */
.stars { display: inline-flex; gap: 2px; }
.star  { color: var(--c-border); font-size: 1rem; }
.star--filled { color: #f59e0b; }

/* ── Streak widget ── */
.streak-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--warning-bg);
    border: 1px solid var(--warning-bd);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: .85rem;
    font-weight: 700;
    color: var(--warning-fg);
}