/*
 * CARING Healthcare Platform - Shell Layout CSS
 *
 * Grid layout: sidebar + header + main content area.
 * Responsive sidebar overlay on mobile (<768px).
 * CARING theme colors: cream, tan, brown palette.
 */

/* ============================================================================
   Shell Grid Layout
   ============================================================================ */

.caring-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-rows: var(--header-height) 1fr;
    grid-template-areas:
        "sidebar header"
        "sidebar main";
    min-height: 100vh;
    background-color: var(--color-bg-primary);
    transition: grid-template-columns var(--transition-normal);
}

/* Collapsed sidebar state */
.caring-shell--sidebar-collapsed {
    grid-template-columns: var(--sidebar-width-collapsed) 1fr;
}

/* ============================================================================
   Sidebar
   ============================================================================ */

.caring-shell__sidebar {
    grid-area: sidebar;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-bg-tertiary);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: var(--z-fixed);
    transition: width var(--transition-normal),
                transform var(--transition-normal);
    display: flex;
    flex-direction: column;

    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-dark) transparent;

    &::-webkit-scrollbar {
        width: 4px;
    }

    &::-webkit-scrollbar-track {
        background: transparent;
    }

    &::-webkit-scrollbar-thumb {
        background: var(--color-border-dark);
        border-radius: var(--radius-full);
    }
}

.caring-shell--sidebar-collapsed .caring-shell__sidebar {
    width: var(--sidebar-width-collapsed);
}

/* ── Sidebar Brand / Logo ── */

.caring-shell__brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    height: var(--header-height);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.caring-shell__brand-logo {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
}

.caring-shell__brand-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition-fast);
}

.caring-shell--sidebar-collapsed .caring-shell__brand-text {
    opacity: 0;
    width: 0;
}

/* ── Nav Items ── */

.caring-shell__nav {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.caring-shell__nav-section {
    margin-bottom: var(--space-md);
}

.caring-shell__nav-label {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    overflow: hidden;
}

.caring-shell--sidebar-collapsed .caring-shell__nav-label {
    opacity: 0;
    height: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

.caring-shell__nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    border: none;
    background: none;
    width: 100%;
    text-align: left;

    &:hover {
        background: var(--color-bg-secondary);
        color: var(--color-text-primary);
    }

    &:focus-visible {
        outline: 2px solid var(--color-accent-light);
        outline-offset: -2px;
    }

    &.active,
    &[aria-current="page"] {
        background: var(--color-bg-secondary);
        color: var(--color-accent-dark);
        font-weight: var(--font-weight-semibold);
    }

    &.active::before,
    &[aria-current="page"]::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 1.25rem;
        background: var(--color-accent-dark);
        border-radius: 0 var(--radius-full) var(--radius-full) 0;
    }
}

.caring-shell__nav-item-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;

    & svg {
        width: 100%;
        height: 100%;
    }
}

.caring-shell__nav-item-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: opacity var(--transition-fast);
}

.caring-shell--sidebar-collapsed .caring-shell__nav-item-text {
    opacity: 0;
    width: 0;
}

.caring-shell__nav-item-badge {
    margin-left: auto;
    background: var(--color-error);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-full);
    min-width: 1.25rem;
    text-align: center;
    line-height: 1.2;
    transition: opacity var(--transition-fast);
}

.caring-shell--sidebar-collapsed .caring-shell__nav-item-badge {
    opacity: 0;
    width: 0;
    padding: 0;
}

/* ── Sidebar Footer ── */

.caring-shell__sidebar-footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* ── Sidebar Toggle (inside sidebar, bottom) ── */

.caring-shell__sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);

    &:hover {
        background: var(--color-bg-secondary);
        color: var(--color-text-primary);
        border-color: var(--color-border-dark);
    }

    & svg {
        width: 1rem;
        height: 1rem;
        transition: transform var(--transition-fast);
    }
}

.caring-shell--sidebar-collapsed .caring-shell__sidebar-toggle svg {
    transform: rotate(180deg);
}

/* ============================================================================
   Header
   ============================================================================ */

.caring-shell__header {
    grid-area: header;
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    height: var(--header-height);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
}

.caring-shell__header-left {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    min-width: 0;
    flex: 1;
}

.caring-shell__header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* ── Hamburger Button ── */

.caring-shell__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    flex-shrink: 0;

    &:hover {
        background: var(--color-bg-secondary);
        color: var(--color-text-primary);
    }

    & svg {
        width: 1.25rem;
        height: 1.25rem;
    }
}

/* ── Breadcrumbs ── */

.caring-shell__breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    min-width: 0;
    overflow: hidden;
}

.caring-shell__breadcrumb {
    color: var(--color-text-muted);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: color var(--transition-fast);

    &:hover {
        color: var(--color-accent-dark);
        text-decoration: underline;
    }
}

.caring-shell__breadcrumb--current {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
    cursor: default;

    &:hover {
        text-decoration: none;
    }
}

.caring-shell__breadcrumb-sep {
    color: var(--color-text-muted);
    margin: 0 var(--space-xs);
    user-select: none;
}

/* ── Header Action Buttons ── */

.caring-shell__action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-fast);

    &:hover {
        background: var(--color-bg-secondary);
        color: var(--color-text-primary);
    }

    & svg {
        width: 1.25rem;
        height: 1.25rem;
    }
}

.caring-shell__badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--color-error);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-bg-tertiary);
}

/* ── User Menu ── */

.caring-shell__user-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);

    &:hover {
        background: var(--color-bg-secondary);
    }
}

.caring-shell__avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--color-accent-light);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    flex-shrink: 0;
}

.caring-shell__user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    white-space: nowrap;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.caring-shell__user-menu {
    position: absolute;
    top: calc(100% + var(--space-xs));
    right: 0;
    min-width: 200px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    overflow: hidden;
    animation: caring-fade-in 0.15s ease-out;
}

.caring-shell__user-menu-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);

    & strong {
        display: block;
        font-size: var(--font-size-sm);
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-primary);
        margin-bottom: var(--space-xs);
    }

    & span {
        font-size: var(--font-size-xs);
        color: var(--color-text-muted);
    }
}

.caring-shell__user-menu-divider {
    height: 1px;
    background: var(--color-border);
}

.caring-shell__user-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    border: none;
    background: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);

    &:hover {
        background: var(--color-bg-secondary);
        color: var(--color-text-primary);
    }
}

.caring-shell__user-menu-item--danger {
    color: var(--color-error);

    &:hover {
        background: var(--color-error-light);
        color: var(--color-error);
    }
}

/* ============================================================================
   Main Content Area
   ============================================================================ */

.caring-shell__main {
    grid-area: header / header / main / main;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.caring-shell__content {
    flex: 1;
    padding: var(--space-xl) var(--space-2xl);
    overflow-y: auto;
    overflow-x: hidden;
}

/* ============================================================================
   Mobile Overlay (sidebar backdrop)
   ============================================================================ */

.caring-shell__overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: calc(var(--z-fixed) - 1);
    animation: caring-fade-in 0.2s ease-out;
    cursor: pointer;
}

/* ============================================================================
   Responsive: Mobile Layout (<768px)
   ============================================================================ */

@media (max-width: 767.98px) {
    .caring-shell {
        grid-template-columns: 1fr;
        grid-template-rows: var(--header-height) 1fr;
        grid-template-areas:
            "header"
            "main";
    }

    /* Sidebar: off-screen, overlay mode */
    .caring-shell__sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        box-shadow: none;
    }

    .caring-shell--sidebar-open .caring-shell__sidebar {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }

    /* On mobile, collapsed state also hides sidebar */
    .caring-shell--sidebar-collapsed .caring-shell__sidebar {
        width: var(--sidebar-width);
        transform: translateX(-100%);
    }

    /* Restore text visibility on mobile sidebar open */
    .caring-shell--sidebar-open .caring-shell__nav-item-text,
    .caring-shell--sidebar-open .caring-shell__brand-text,
    .caring-shell--sidebar-open .caring-shell__nav-label,
    .caring-shell--sidebar-open .caring-shell__nav-item-badge {
        opacity: 1;
        width: auto;
        height: auto;
        padding: revert;
    }

    .caring-shell__content {
        padding: var(--space-lg);
    }

    /* Hide user name on mobile */
    .caring-shell__user-name {
        display: none;
    }

    /* Breadcrumbs: show only current */
    .caring-shell__breadcrumbs .caring-shell__breadcrumb:not(.caring-shell__breadcrumb--current),
    .caring-shell__breadcrumbs .caring-shell__breadcrumb-sep {
        display: none;
    }
}

/* ============================================================================
   Responsive: Tablet (768px - 1023px)
   ============================================================================ */

@media (min-width: 768px) and (max-width: 1023.98px) {
    .caring-shell__content {
        padding: var(--space-xl);
    }
}

/* ============================================================================
   Dark Mode Adjustments
   ============================================================================ */

[data-theme="dark"] .caring-shell__sidebar,
[data-theme="dark"] .caring-shell__header {
    background: var(--color-bg-secondary);
}

[data-theme="dark"] .caring-shell__avatar {
    background: var(--color-accent-medium);
    color: var(--color-text-inverse);
}

[data-theme="dark"] .caring-shell__badge {
    border-color: var(--color-bg-secondary);
}

/* ============================================================================
   Navigation Component (.caring-nav)
   ============================================================================ */

.caring-nav {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 0;
}

/* Brand area */
.caring-nav__brand {
    display: flex;
    align-items: center;
    gap: var(--space-md, 0.75rem);
    padding: var(--space-lg, 1rem) var(--space-xl, 1.25rem);
    height: var(--header-height, 64px);
    border-bottom: 1px solid var(--color-border, #E2D9CE);
    flex-shrink: 0;
}

.caring-nav__logo {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;

    & svg { width: 100%; height: 100%; }
}

.caring-nav__brand-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary, #3D3229);
    white-space: nowrap;
}

/* Nav items container */
.caring-nav__items {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

/* Category labels */
.caring-nav__category {
    padding: 0.5rem 0.75rem 0.25rem;
}

.caring-nav__category-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-text-muted, #A69882);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.caring-nav__divider {
    height: 1px;
    background: var(--color-border, #E2D9CE);
    margin: 0.5rem 0.75rem;
}

/* Individual nav items */
.caring-nav__item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    color: var(--color-text-secondary, #7A6E61);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
}

.caring-nav__item:hover {
    background: var(--color-bg-secondary, #ECE4DA);
    color: var(--color-text-primary, #3D3229);
}

.caring-nav__item--active {
    background: var(--color-bg-secondary, #ECE4DA);
    color: var(--color-accent-dark, #574C3F);
    font-weight: 600;
}

.caring-nav__item--active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 1.25rem;
    background: var(--color-accent-dark, #574C3F);
    border-radius: 0 999px 999px 0;
}

/* Icon sizing */
.caring-nav__item-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;

    & svg { width: 100%; height: 100%; }
}

.caring-nav__item-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Active dot (collapsed mode) */
.caring-nav__active-dot {
    position: absolute;
    right: 4px;
    top: 4px;
    width: 6px;
    height: 6px;
    background: var(--color-accent-dark, #574C3F);
    border-radius: 999px;
}

/* Toggle button */
.caring-nav__toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    margin: 0.5rem;
    border: 1px solid var(--color-border, #E2D9CE);
    border-radius: 0.375rem;
    background: none;
    color: var(--color-text-muted, #A69882);
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all 0.15s;
    flex-shrink: 0;
}

.caring-nav__toggle:hover {
    background: var(--color-bg-secondary, #ECE4DA);
    color: var(--color-text-primary, #3D3229);
}

.caring-nav__toggle-icon {
    flex-shrink: 0;
    width: 1rem;
    height: 1rem;

    & svg { width: 100%; height: 100%; }
}

.caring-nav__toggle-text {
    white-space: nowrap;
}

/* Collapsed state (via .caring-shell--sidebar-collapsed on parent) */
.caring-shell--sidebar-collapsed .caring-nav__brand-text,
.caring-shell--sidebar-collapsed .caring-nav__item-label,
.caring-shell--sidebar-collapsed .caring-nav__toggle-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
    pointer-events: none;
}

.caring-shell--sidebar-collapsed .caring-nav__category-label {
    opacity: 0;
    height: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

.caring-shell--sidebar-collapsed .caring-nav__category {
    padding: 0;
    margin: 0;
}

.caring-shell--sidebar-collapsed .caring-nav__divider {
    margin: 0.125rem 0.5rem;
    opacity: 0.4;
}

.caring-shell--sidebar-collapsed .caring-nav__brand {
    justify-content: center;
    padding: var(--space-lg, 1rem) 0.5rem;
}

.caring-shell--sidebar-collapsed .caring-nav__item {
    justify-content: center;
    padding: 0.625rem;
}

.caring-shell--sidebar-collapsed .caring-nav__items {
    scrollbar-width: none;
}

.caring-shell--sidebar-collapsed .caring-nav__items::-webkit-scrollbar {
    display: none;
}

.caring-shell--sidebar-collapsed .caring-shell__sidebar {
    scrollbar-width: none;
}

.caring-shell--sidebar-collapsed .caring-shell__sidebar::-webkit-scrollbar {
    display: none;
}

.caring-shell--sidebar-collapsed .caring-nav__toggle {
    justify-content: center;
    margin: 0.25rem 0.5rem;
}

.caring-shell--sidebar-collapsed .caring-nav__toggle-icon svg {
    transform: rotate(180deg);
}