/**
 * Risviel Design System — Layout
 *
 * Structural rules for sidebar, main-content area, top navbar, and portal layout.
 * Uses CSS Logical Properties for automatic RTL support — no PHP ternaries needed.
 *
 * Contexts:
 *   .rs-layout-admin   — Admin layout (sidebar + main-content + navbar)
 *   .rs-layout-portal  — Customer Portal layout (portal sidebar + content)
 *   .rs-layout-public  — Public/auth pages (no sidebar)
 *   .rs-layout-minimal — Minimal layout (standalone pages)
 *
 * Dependencies: tokens.css (must be loaded first)
 *
 * @version 1.0.0
 * @since   2026-04-11
 */

/* ============================================================================
   1. BASE — Shared foundations
   ============================================================================ */

body {
    min-height: 100vh;
    font-size: var(--rs-font-size-base);
    font-family: var(--rs-font-sans);
    line-height: var(--rs-line-height);
}

/* ============================================================================
   2. ADMIN SIDEBAR
   ============================================================================ */

.sidebar {
    width: var(--rs-sidebar-width);
    position: fixed;
    top: 0;
    inset-inline-start: 0;           /* LTR: left:0  |  RTL: right:0 */
    height: 100vh;
    z-index: 1000;
    transition: all var(--rs-transition);
    overflow-y: auto;
    background-color: var(--rs-sidebar-bg);
    color: var(--rs-sidebar-text);
}

/* ── Collapsed state ── */
.sidebar.collapsed {
    width: var(--rs-sidebar-width-collapsed);
}

.sidebar.collapsed .nav-link span,
.sidebar.collapsed .sidebar-header h6,
.sidebar.collapsed .nav-header,
.sidebar.collapsed .sidebar-section-header {
    display: none;
}

.sidebar.collapsed .nav-link {
    text-align: center;
    padding: var(--rs-space-2);
}

.sidebar.collapsed .nav-link i {
    margin: 0;
    font-size: 1.1rem;
}

/* ── Sidebar header ── */
.sidebar-header {
    padding: var(--rs-space-3) var(--rs-space-4);
    border-block-end: var(--rs-border-width) solid var(--rs-sidebar-border);
    color: var(--rs-sidebar-text-hover);
}

/* ── Sidebar toggle button ── */
.sidebar-toggle-btn {
    color: var(--rs-sidebar-text) !important;
}

.sidebar-toggle-btn:hover {
    color: var(--rs-sidebar-text-hover) !important;
}

/* ── Section headers ── */
.nav-header,
.sidebar-section-header {
    padding: var(--rs-space-2) var(--rs-space-3) var(--rs-space-1);
    font-size: var(--rs-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--rs-sidebar-section-text);
}

/* ── Navigation links ── */
.sidebar .nav-link {
    padding: 0.4rem var(--rs-space-3);
    border-radius: var(--rs-border-radius);
    margin: 0.1rem var(--rs-space-2);
    font-size: var(--rs-font-size-sm);
    color: var(--rs-sidebar-text);
    transition: background var(--rs-transition-fast), color var(--rs-transition-fast);
}

.sidebar .nav-link i {
    font-size: 0.9rem;
    width: 1.25rem;
    margin-inline-end: var(--rs-space-2);   /* LTR: margin-right  |  RTL: margin-left */
    text-align: center;
}

.sidebar .nav-link:hover {
    background: var(--rs-sidebar-hover-bg);
    color: var(--rs-sidebar-text-hover);
}

.sidebar .nav-link.active {
    background: var(--rs-sidebar-active-bg);
    color: var(--rs-sidebar-text-hover);
}

.sidebar .nav-link.text-danger:hover {
    background: rgba(var(--rs-danger-rgb), 0.2);
}

/* ── Sidebar divider ── */
.sidebar-divider {
    border-color: var(--rs-sidebar-border);
}

/* ============================================================================
   3. ADMIN MAIN CONTENT
   ============================================================================ */

.main-content {
    margin-inline-start: var(--rs-sidebar-width);   /* LTR: margin-left  |  RTL: margin-right */
    transition: all var(--rs-transition);
    top: 0;
    position: absolute;
    width: calc(100% - var(--rs-sidebar-width));
}

.main-content.expanded {
    margin-inline-start: var(--rs-sidebar-width-collapsed);
    width: calc(100% - var(--rs-sidebar-width-collapsed));
}

/* ============================================================================
   4. TOP NAVBAR
   ============================================================================ */

.rs-top-navbar {
    border-block-end: var(--rs-border-width) solid var(--rs-border-color);
    padding-block: var(--rs-space-2);
}

.rs-top-navbar .breadcrumb {
    margin-bottom: 0;
    font-size: var(--rs-font-size-sm);
}

/* Mobile sidebar toggle in navbar */
.rs-mobile-toggle {
    padding: 0;
    margin-inline-end: var(--rs-space-2);
}

/* User dropdown in navbar */
.rs-user-dropdown {
    margin-inline-start: auto;
}

.rs-user-dropdown .dropdown-menu {
    /* In RTL, dropdown-menu-end becomes start and vice-versa;
       Bootstrap 5 handles this with .dropdown-menu-end which we keep in HTML.
       No extra CSS needed for RTL. */
}

/* ============================================================================
   5. PORTAL LAYOUT (Customer Portal)
   ============================================================================ */

.portal-sidebar {
    width: var(--rs-portal-sidebar-width);
    background-color: var(--rs-sidebar-bg);
    color: var(--rs-sidebar-text);
    padding: 0;
    position: fixed;
    inset-inline-start: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
}

.portal-brand {
    color: var(--rs-sidebar-text-hover) !important;
    font-weight: bold;
    padding: var(--rs-space-4) var(--rs-space-5) !important;
    border-block-end: var(--rs-border-width) solid var(--rs-sidebar-border);
    margin-block-end: var(--rs-space-3);
    display: block;
    text-decoration: none;
}

.portal-sidebar .nav-link {
    color: var(--rs-sidebar-text);
    padding: var(--rs-space-3) var(--rs-space-5);
    border-inline-start: 3px solid transparent;   /* LTR: border-left  |  RTL: border-right */
    text-decoration: none;
    transition: all var(--rs-transition-fast);
}

.portal-sidebar .nav-link:hover {
    color: var(--rs-sidebar-text-hover);
    background-color: var(--rs-sidebar-hover-bg);
}

.portal-sidebar .nav-link.active {
    color: var(--rs-sidebar-text-hover);
    background-color: var(--rs-portal-active-bg);
    border-inline-start-color: var(--rs-portal-active-border);
}

.portal-sidebar .nav-link i {
    margin-inline-end: 10px;
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.portal-main-content {
    margin-inline-start: var(--rs-portal-sidebar-width);
    flex: 1;
    padding: var(--rs-space-5);
}

/* ── Portal page header ── */
.page-header {
    margin-block-end: var(--rs-space-8);
}

.page-header h1 {
    font-weight: 600;
    margin-block-end: var(--rs-space-1);
}

/* ============================================================================
   6. PUBLIC LAYOUT (Auth pages, CMS)
   ============================================================================ */

.rs-layout-public main {
    min-height: 100vh;
}

/* ============================================================================
   7. MINIMAL LAYOUT (Standalone pages)
   ============================================================================ */

.rs-layout-minimal {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.rs-layout-minimal main {
    flex: 1;
}

/* ============================================================================
   8. FLASH MESSAGES (shared across all layouts)
   ============================================================================ */

.rs-flash-container .alert {
    padding-block: var(--rs-space-2);
    font-size: var(--rs-font-size-sm);
}

.rs-flash-container .alert i {
    margin-inline-end: var(--rs-space-1);
}

.rs-flash-container .alert ul {
    margin-bottom: 0;
    padding-inline-start: var(--rs-space-3);
}

/* ============================================================================
   9. RESPONSIVE — Mobile & Tablet
   ============================================================================ */

/* ── Mobile: < 768px ── */
@media (max-width: 767.98px) {

    /* Admin sidebar: hidden off-screen, slide in on toggle */
    .sidebar {
        transform: translateX(-100%);
    }

    [dir="rtl"] .sidebar {
        transform: translateX(100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-inline-start: 0;
        width: 100%;
    }

    .main-content.expanded {
        margin-inline-start: 0;
        width: 100%;
    }

    /* Portal sidebar: hidden off-screen too */
    .portal-sidebar {
        transform: translateX(-100%);
        transition: transform var(--rs-transition);
    }

    [dir="rtl"] .portal-sidebar {
        transform: translateX(100%);
    }

    .portal-sidebar.show {
        transform: translateX(0);
    }

    .portal-main-content {
        margin-inline-start: 0;
    }

    /* Ensure touch targets on mobile */
    .sidebar .nav-link,
    .portal-sidebar .nav-link {
        min-height: var(--rs-touch-target);
        display: flex;
        align-items: center;
    }

    /* Modal: full-screen on mobile */
    .modal-dialog {
        max-width: 100%;
        margin: 0;
        min-height: 100vh;
    }

    .modal-content {
        min-height: 100vh;
        border: 0;
        border-radius: 0;
    }

    .modal-body {
        flex: 1;
    }
}

/* ── Tablet: 768px – 1199px ── */
@media (min-width: 768px) and (max-width: 1199.98px) {
    /* Sidebar auto-collapses on tablet */
    .sidebar.auto-collapse {
        width: var(--rs-sidebar-width-collapsed);
    }

    .sidebar.auto-collapse .nav-link span,
    .sidebar.auto-collapse .sidebar-header h6,
    .sidebar.auto-collapse .nav-header,
    .sidebar.auto-collapse .sidebar-section-header {
        display: none;
    }

    .sidebar.auto-collapse .nav-link {
        text-align: center;
        padding: var(--rs-space-2);
    }

    .sidebar.auto-collapse .nav-link i {
        margin: 0;
        font-size: 1.1rem;
    }

    .sidebar.auto-collapse + .main-content {
        margin-inline-start: var(--rs-sidebar-width-collapsed);
        width: calc(100% - var(--rs-sidebar-width-collapsed));
    }
}

/* ── Desktop: ≥ 1200px ── */
@media (min-width: 1200px) {
    /* Full sidebar always visible */
    .sidebar {
        transform: none !important;
    }
}

/* ============================================================================
   10. SIDEBAR OVERLAY (mobile backdrop)
   ============================================================================ */

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;   /* Below sidebar (1000), above content */
    opacity: 0;
    transition: opacity var(--rs-transition);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ============================================================================
   11. PRINT
   ============================================================================ */

@media print {
    .sidebar,
    .portal-sidebar,
    .rs-top-navbar,
    .sidebar-overlay,
    .rs-mobile-toggle,
    #mobileSidebarToggle,
    #portalMobileToggle {
        display: none !important;
    }

    .main-content,
    .portal-main-content {
        margin-inline-start: 0 !important;
        width: 100% !important;
        position: static !important;
    }
}