/* ==========================================================================
   PT Suite - Shell applicativa (sidebar, header, contenuto)
   ========================================================================== */

.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

/* Sidebar ------------------------------------------------------------------ */

.sidebar {
    position: sticky;
    top: 0;
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: var(--space-4) var(--space-3);
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-primary-soft) 100%);
    border-right: 1px solid var(--border-color);
}

.sidebar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-2) var(--space-5);
}

.sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    overflow-y: auto;
    flex: 1;
}

.sidebar__group-label {
    margin: var(--space-4) var(--space-3) var(--space-2);
    color: var(--text-muted);
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--fs-base);
    font-weight: 500;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav-item:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    transform: translateX(2px);
}

.nav-item.is-active {
    background: var(--tint-primary);
    color: var(--accent-primary);
}

.nav-item.is-active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 60%;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    transform: translateY(-50%);
}

.nav-item__icon {
    display: grid;
    place-items: center;
    width: 20px;
    flex-shrink: 0;
}

.nav-item__badge {
    margin-left: auto;
    padding: 2px 8px;
    background: var(--tint-domicilio);
    border-radius: var(--radius-full);
    color: var(--accent-domicilio);
    font-size: var(--fs-xs);
    font-weight: 600;
}

.sidebar__footer {
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-color);
}

.sidebar__user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2);
    border-radius: var(--radius-md);
}

/* Header ------------------------------------------------------------------- */

.app-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    min-height: var(--header-height);
    padding: var(--space-3) var(--space-5);
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.app-header__titles {
    min-width: 0;
    flex: 1;
}

.app-header__title {
    margin: 0;
    font-family: var(--font-title);
    font-size: var(--fs-lg);
    font-weight: 600;
}

.app-header__subtitle {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--fs-sm);
}

.app-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.sidebar-toggle {
    display: none;
    padding: var(--space-2);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
}

/* Contenuto --------------------------------------------------------------- */

.app-content {
    width: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
    padding: var(--space-5);
    flex: 1;
}

.app-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: var(--fs-xs);
}

/* Griglie ----------------------------------------------------------------- */

.grid {
    display: grid;
    gap: var(--space-4);
}

.grid--stats { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid--cards { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--sidebar { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); align-items: start; }
.grid--sidebar > * { min-width: 0; }

/* Overlay mobile della sidebar -------------------------------------------- */

.sidebar-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    background: var(--overlay-bg);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

body.sidebar-open .sidebar-overlay {
    opacity: 1;
    visibility: visible;
}

/* Responsive -------------------------------------------------------------- */

@media (max-width: 1100px) {
    .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }

    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        z-index: var(--z-sidebar);
        width: min(84vw, var(--sidebar-width));
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

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

    .sidebar-toggle { display: grid; place-items: center; }

    .app-content { padding: var(--space-4) var(--space-3); }

    .app-header { padding: var(--space-3); }

    .grid--2,
    .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

/* Tab bar e foglio "Altro": nascosti sul desktop, visibili sul telefono. */
.tabbar,
.more-sheet { display: none; }

@media (max-width: 900px) {
    html,
    body {
        min-height: 100dvh;
        overscroll-behavior: none;
        -webkit-tap-highlight-color: transparent;
    }

    body {
        background-image: none;
        background-color: var(--bg-primary);
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .app-shell { grid-template-columns: 1fr; }

    /* La sidebar da sito sparisce: al suo posto la tab bar. */
    .sidebar,
    .sidebar-toggle,
    .app-footer { display: none !important; }

    .app-header {
        min-height: 52px;
        padding: 0 var(--space-4);
        background: var(--header-bg);
        border-bottom-color: rgb(51 65 85 / 55%);
    }

    .app-header__title {
        font-size: 1.125rem;
        letter-spacing: -0.02em;
    }

    .app-header__settings {
        display: grid;
        place-items: center;
        width: 40px;
        height: 40px;
        margin-right: -6px;
        border-radius: var(--radius-full);
        color: var(--text-secondary);
    }

    .app-header__settings:hover { color: var(--text-primary); }

    .app-header__actions .btn { min-height: 40px; }

    .app-content {
        padding: var(--space-4) var(--space-4) calc(var(--tabbar-height) + var(--space-5) + env(safe-area-inset-bottom));
    }

    .tabbar {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: var(--z-tabbar);
        display: flex;
        justify-content: space-around;
        align-items: stretch;
        height: calc(var(--tabbar-height) + env(safe-area-inset-bottom));
        padding: 6px 8px env(safe-area-inset-bottom);
        background: var(--tabbar-bg);
        backdrop-filter: blur(16px);
        border-top: 1px solid rgb(51 65 85 / 70%);
    }

    .tabbar__item {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        flex: 1;
        min-width: 0;
        padding: 4px 0;
        background: none;
        border: 0;
        border-radius: var(--radius-md);
        color: var(--text-muted);
        font-family: var(--font-title);
        font-size: 0.6875rem;
        font-weight: 600;
        letter-spacing: 0.01em;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .tabbar__item:hover { color: var(--text-secondary); }

    .tabbar__item.is-active { color: var(--accent-primary); }

    .tabbar__icon { position: relative; display: grid; place-items: center; }

    .tabbar__dot {
        position: absolute;
        top: -6px;
        right: -10px;
        min-width: 16px;
        height: 16px;
        padding: 0 4px;
        background: var(--accent-domicilio);
        border-radius: var(--radius-full);
        color: #fff;
        font-size: 0.625rem;
        font-weight: 700;
        line-height: 16px;
        text-align: center;
    }

    .more-sheet {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: calc(var(--z-tabbar) + 2);
        display: flex;
        flex-direction: column;
        padding: var(--space-3) var(--space-4) calc(var(--tabbar-height) + env(safe-area-inset-bottom) + var(--space-3));
        background: var(--bg-surface);
        border: 1px solid var(--border-color);
        border-bottom: 0;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(110%);
        transition: transform var(--transition-base), visibility var(--transition-base);
        pointer-events: none;
        visibility: hidden;
    }

    body.more-open .more-sheet {
        transform: translateY(0);
        pointer-events: auto;
        visibility: visible;
    }

    .more-sheet__handle {
        width: 40px;
        height: 4px;
        margin: 4px auto 12px;
        background: var(--border-strong);
        border-radius: var(--radius-full);
    }

    .more-sheet__title {
        margin: 0 0 var(--space-3);
        font-family: var(--font-title);
        font-size: var(--fs-md);
        font-weight: 600;
    }

    .more-sheet__list { display: flex; flex-direction: column; gap: 4px; }

    .more-sheet__item {
        display: flex;
        align-items: center;
        gap: var(--space-3);
        min-height: 48px;
        padding: 0 var(--space-3);
        border-radius: var(--radius-md);
        color: var(--text-primary);
        font-weight: 500;
    }

    .more-sheet__item:hover,
    .more-sheet__item.is-active { background: var(--bg-surface-hover); color: var(--text-primary); }

    .more-sheet__item--danger { color: var(--accent-danger); }

    .more-sheet__icon {
        display: grid;
        place-items: center;
        width: 36px;
        height: 36px;
        background: var(--bg-inset);
        border-radius: var(--radius-md);
        color: var(--accent-primary);
    }

    .more-sheet__item--danger .more-sheet__icon { color: var(--accent-danger); }

    body.more-open .sidebar-overlay {
        opacity: 1;
        visibility: visible;
        z-index: calc(var(--z-tabbar) + 1);
    }

    .grid--2,
    .grid--3 { grid-template-columns: minmax(0, 1fr); }
}