/* ============ MOBILE TOPBAR ============ */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    padding: calc(14px + env(safe-area-inset-top)) var(--sp-5) 14px;
    position: sticky;
    top: 0;
    z-index: 30;
    background: color-mix(in srgb, var(--paper) 82%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.topbar-title {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.01em;
    white-space: nowrap;
    pointer-events: none;
    max-width: 55vw;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-actions {
    display: flex;
    gap: var(--sp-2);
}

/* ============ MOBILE DRAWER ============ */
.nav-drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(10, 8, 6, 0.5);
    z-index: 90;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease);
}

.nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 84vw);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    border-radius: 0 24px 24px 0;
    z-index: 91;
    display: flex;
    flex-direction: column;
    padding: calc(var(--sp-6) + env(safe-area-inset-top)) var(--sp-4) var(--sp-4);
    transform: translateX(-100%);
    transition: transform var(--dur-slow) var(--ease);
}

body.nav-open .nav-drawer {
    transform: translateX(0);
}

body.nav-open .nav-drawer-backdrop {
    opacity: 1;
    pointer-events: auto;
}

body.nav-open {
    overflow: hidden;
}

.drawer-close {
    position: absolute;
    top: calc(var(--sp-4) + env(safe-area-inset-top));
    right: var(--sp-4);
}

.drawer-profile {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--sp-3);
    padding-right: 40px;
}

.drawer-profile .avatar {
    width: 52px;
    height: 52px;
    font-size: 18px;
}

.drawer-profile-name {
    font-weight: 800;
    font-size: 15.5px;
}

.drawer-profile-goal {
    font-size: 12px;
    color: var(--muted);
}

.drawer-quickstats {
    display: flex;
    gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}

.qs {
    flex: 1;
    background: var(--surface-2);
    border-radius: var(--r-sm);
    padding: 9px 6px;
    text-align: center;
}

.qs-value {
    font-weight: 800;
    font-size: 14.5px;
}

.qs-label {
    font-size: 9.5px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.drawer-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 10px;
    border-radius: var(--r-sm);
    color: var(--ink);
    text-decoration: none;
    font-size: 14.5px;
    font-weight: 600;
    transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.drawer-nav a:hover {
    background: var(--surface-2);
}

.drawer-nav a.active {
    background: var(--grad-soft);
    color: var(--orange);
}

.drawer-nav a.cta-row {
    background: var(--grad);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
    margin: 4px 0 8px;
}

.drawer-nav a.cta-row:hover {
    background: var(--grad);
    filter: brightness(1.06);
}

.drawer-nav a[aria-disabled="true"] {
    color: var(--muted);
    cursor: default;
}

.drawer-nav a[aria-disabled="true"]:hover {
    background: transparent;
}

.drawer-nav svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.grow {
    flex: 1;
    min-width: 0;
}

.drawer-logout {
    margin-top: var(--sp-3);
    padding-top: var(--sp-3);
    border-top: 1px solid var(--border);
}

.drawer-logout {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.drawer-logout a,
.drawer-logout button.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-weight: 600;
    font-size: 12.5px;
    padding: 6px 4px;
    text-decoration: none;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
}

.drawer-logout a svg,
.drawer-logout button.theme-toggle svg {
    width: 15px;
    height: 15px;
}

.drawer-logout a:hover {
    color: var(--red);
}

.drawer-logout button.theme-toggle:hover {
    color: var(--orange);
}

/* ============ FAB ============ */
.fab {
    position: fixed;
    right: var(--sp-5);
    bottom: calc(var(--sp-5) + env(safe-area-inset-bottom));
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--grad);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    z-index: 40;
    text-decoration: none;
    transition: transform var(--dur-fast) var(--ease);
}

.fab:active {
    transform: scale(0.92);
}

.fab svg {
    width: 26px;
    height: 26px;
}

/* ============ DESKTOP SIDEBAR ============ */
.app-sidebar {
    display: none;
}

@media (min-width: 960px) {
    .fab,
    .nav-drawer,
    .nav-drawer-backdrop {
        display: none;
    }

    #nav-burger {
        display: none;
    }

    .topbar {
        padding-left: var(--sp-6);
        padding-right: var(--sp-6);
    }

    body:not(.auth-body) {
        padding-left: 264px;
    }

    .app-sidebar {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 264px;
        padding: var(--sp-5) var(--sp-4) var(--sp-4);
        border-right: 1px solid var(--border);
        background: var(--surface);
        overflow-y: auto;
        z-index: 50;
    }

    .sidebar-profile {
        text-decoration: none;
        border-radius: var(--r-sm);
        transition: background var(--dur-fast) var(--ease);
    }

    .sidebar-profile:hover {
        background: var(--surface-2);
    }
}