/**
 * Modern Sidebar - Academi Theme Optimized
 * Designed to match Academi theme aesthetics
 */

/* Import Font Awesome */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css');

/* ============================================
   CSS VARIABLES - Academi Theme Colors
   ============================================ */

:root {
    --sidebar-primary-color: #667eea;
    --sidebar-bg-color: #ffffff;
    --sidebar-text-color: #333333;
    --sidebar-hover-bg: #f8f9fa;
    --sidebar-active-bg: #e8f0fe;
    --sidebar-border-color: #e0e0e0;
    --sidebar-width: 200px;
    --sidebar-collapsed-width: 60px;
    --sidebar-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* ============================================
   MAIN SIDEBAR CONTAINER - LIGHT THEME
   ============================================ */

.modern-sidebar {
    position: fixed;
    top: 0;
    height: 100vh;
    width: var(--sidebar-width);
    background: var(--sidebar-bg-color);
    color: var(--sidebar-text-color);
    z-index: 1040;
    transition: var(--sidebar-transition);
    box-shadow: var(--sidebar-shadow);
    display: flex;
    flex-direction: column;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    border-right: 1px solid var(--sidebar-border-color);
}

/* Start collapsed by default */
.modern-sidebar:not(.user-expanded) {
    width: var(--sidebar-collapsed-width);
}

/* Only expand if user clicked or localStorage says so */
.modern-sidebar.user-expanded {
    width: var(--sidebar-width);
}

/* Left position */
.modern-sidebar.left {
    left: 0;
}

/* Right position */
.modern-sidebar.right {
    right: 0;
    border-right: none;
    border-left: 1px solid var(--sidebar-border-color);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.08);
}

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

/* ============================================
   FIX: Lower z-index on course/incourse pages
   so Moodle's native drawer renders above us.
   Moodle's drawer uses z-index ~1000-1035.
   ============================================ */

.pagelayout-course .modern-sidebar,
.pagelayout-incourse .modern-sidebar {
    z-index: 999;
}

/* ============================================
   TOGGLE BUTTON - ACADEMI STYLE
   ============================================ */

.sidebar-toggle {
    position: absolute;
    top: 15px;
    right: -18px;
    width: 36px;
    height: 36px;
    background: #ffffff;
    border: 2px solid var(--sidebar-border-color);
    border-radius: 8px;
    color: var(--sidebar-text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1041;
}

.modern-sidebar.right .sidebar-toggle {
    right: auto;
    left: -18px;
}

.sidebar-toggle:hover {
    background: var(--sidebar-primary-color);
    color: #ffffff;
    border-color: var(--sidebar-primary-color);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.sidebar-toggle i {
    transition: transform 0.3s ease;
    font-size: 1.1rem;
}

.modern-sidebar.collapsed .sidebar-toggle i {
    transform: rotate(180deg);
}

/* ============================================
   SIDEBAR CONTENT
   ============================================ */

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0;
}

/* Academi-style scrollbar */
.sidebar-content::-webkit-scrollbar {
    width: 8px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: #f8f9fa;
    border-radius: 4px;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: #d0d0d0;
    border-radius: 4px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: #b0b0b0;
}

/* ============================================
   USER PROFILE SECTION - ACADEMI STYLE
   ============================================ */

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1.25rem 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-bottom: 2px solid #e8ecef;
    transition: var(--sidebar-transition);
}

.modern-sidebar.collapsed .sidebar-user {
    flex-direction: column;
    padding: 1rem 0.5rem;
    gap: 0.5rem;
}

.user-avatar {
    border-radius: 50%;
    border: 3px solid var(--sidebar-primary-color);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.modern-sidebar.collapsed .user-avatar {
    width: 40px !important;
    height: 40px !important;
    border-width: 2px;
}

.user-info {
    flex: 1;
    min-width: 0;
    transition: var(--sidebar-transition);
}

.modern-sidebar.collapsed .user-info {
    display: none;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: #2c3e50;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.15rem;
}

.user-role {
    font-size: 0.8rem;
    color: #7f8c8d;
    background: #e8f0fe;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    display: inline-block;
    font-weight: 500;
}

/* ============================================
   NAVIGATION - ACADEMI CLEAN STYLE
   ============================================ */

.sidebar-nav {
    padding: 0.5rem 0;
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.75rem 1rem;
    color: var(--sidebar-text-color);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    border-left: 3px solid transparent;
    font-size: 0.9rem;
}

.modern-sidebar.right .nav-link {
    border-left: none;
    border-right: 3px solid transparent;
}

.modern-sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 0.75rem 0.5rem;
}

.nav-link:hover {
    background: var(--sidebar-hover-bg);
    color: var(--sidebar-primary-color);
    border-left-color: var(--sidebar-primary-color);
}

.modern-sidebar.right .nav-link:hover {
    border-right-color: var(--sidebar-primary-color);
}

.nav-item.active .nav-link {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-primary-color);
    border-left-color: var(--sidebar-primary-color);
    font-weight: 600;
}

.modern-sidebar.right .nav-item.active .nav-link {
    border-right-color: var(--sidebar-primary-color);
}

.nav-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    color: inherit;
}

.nav-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
    transition: var(--sidebar-transition);
}

.modern-sidebar.collapsed .nav-text {
    opacity: 0;
    width: 0;
}

.nav-badge {
    background: #e74c3c;
    color: #ffffff;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    min-width: 18px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(231, 76, 60, 0.3);
}

.modern-sidebar.collapsed .nav-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 16px;
    padding: 0.1rem 0.35rem;
    font-size: 0.65rem;
}

/* ============================================
   CUSTOM LINKS SECTION - ACADEMI STYLE
   ============================================ */

.sidebar-section {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 2px solid #e8ecef;
}

.section-title {
    padding: 0.5rem 1rem;
    margin-bottom: 0.25rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #95a5a6;
    transition: var(--sidebar-transition);
}

.modern-sidebar.collapsed .section-title {
    opacity: 0;
    height: 0;
    margin: 0;
    padding: 0;
}

.custom-links {
    margin-top: 0;
}

.external-icon {
    font-size: 0.7rem;
    margin-left: auto;
    opacity: 0.5;
}

.modern-sidebar.collapsed .external-icon {
    display: none;
}

/* ============================================
   FOOTER - ACADEMI STYLE
   ============================================ */

.sidebar-footer {
    padding: 0.875rem 1rem;
    border-top: 2px solid #e8ecef;
    background: #f8f9fa;
    margin-top: auto;
}

.footer-text {
    font-size: 0.7rem;
    color: #95a5a6;
    text-align: center;
    font-weight: 500;
    transition: var(--sidebar-transition);
}

.modern-sidebar.collapsed .footer-text {
    opacity: 0;
    height: 0;
}

/* ============================================
   OVERLAY FOR MOBILE
   ============================================ */

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1039;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    backdrop-filter: blur(2px);
}

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

/* ============================================
   BODY ADJUSTMENTS - SMOOTH ACADEMI INTEGRATION
   ============================================ */

body {
    transition: var(--sidebar-transition);
}

#page {
    transition: var(--sidebar-transition);
}

/* Only push content when user has expanded sidebar */
.modern-sidebar.left.user-expanded:not(.collapsed) ~ #page {
    margin-left: var(--sidebar-width) !important;
}

.modern-sidebar.right.user-expanded:not(.collapsed) ~ #page {
    margin-right: var(--sidebar-width) !important;
}

/* Adjust for Academi header */
#page-wrapper {
    transition: var(--sidebar-transition);
}

.modern-sidebar.left.user-expanded:not(.collapsed) ~ #page-wrapper,
.modern-sidebar.left.user-expanded:not(.collapsed) ~ * #page-wrapper {
    margin-left: var(--sidebar-width) !important;
}

.modern-sidebar.right.user-expanded:not(.collapsed) ~ #page-wrapper,
.modern-sidebar.right.user-expanded:not(.collapsed) ~ * #page-wrapper {
    margin-right: var(--sidebar-width) !important;
}

/* ============================================
   FIX: Course/incourse pages — sidebar overlays,
   does NOT push #page or #page-wrapper.
   Moodle's own drawer handles the course layout.
   The drawer position is corrected via JavaScript.
   ============================================ */

.pagelayout-course .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page,
.pagelayout-incourse .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page,
.pagelayout-course .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page-wrapper,
.pagelayout-incourse .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page-wrapper,
.pagelayout-course .modern-sidebar.left.user-expanded:not(.collapsed) ~ * #page-wrapper,
.pagelayout-incourse .modern-sidebar.left.user-expanded:not(.collapsed) ~ * #page-wrapper {
    margin-left: 0 !important;
}

.pagelayout-course .modern-sidebar.right.user-expanded:not(.collapsed) ~ #page,
.pagelayout-incourse .modern-sidebar.right.user-expanded:not(.collapsed) ~ #page,
.pagelayout-course .modern-sidebar.right.user-expanded:not(.collapsed) ~ #page-wrapper,
.pagelayout-incourse .modern-sidebar.right.user-expanded:not(.collapsed) ~ #page-wrapper,
.pagelayout-course .modern-sidebar.right.user-expanded:not(.collapsed) ~ * #page-wrapper,
.pagelayout-incourse .modern-sidebar.right.user-expanded:not(.collapsed) ~ * #page-wrapper {
    margin-right: 0 !important;
}

/* Course content regions — no margin changes needed */
#region-main {
    transition: var(--sidebar-transition);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    :root {
        --sidebar-width: 240px;
    }
}

@media (max-width: 992px) {
    :root {
        --sidebar-width: 220px;
    }
}

/* ============================================
   MOBILE: completely hide the sidebar.
   Moodle's own bottom nav handles phone users.
   JS adds .mobile-hidden on screens <= 768px
   and removes it on resize to desktop.
   ============================================ */

.modern-sidebar.mobile-hidden {
    display: none !important;
}

/* Also ensure no margin is ever applied to page
   elements when the sidebar is hidden on mobile */
@media (max-width: 768px) {
    .modern-sidebar,
    .sidebar-overlay,
    .sidebar-toggle {
        display: none !important;
    }

    body,
    #page,
    #page-wrapper,
    #page-wrapper ~ * {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
}

/* Show overlay on course pages when sidebar is expanded */
@media (max-width: 1200px) {
    .pagelayout-course .sidebar-overlay,
    .pagelayout-incourse .sidebar-overlay {
        opacity: 0;
        visibility: hidden;
    }

    .pagelayout-course .modern-sidebar.user-expanded:not(.collapsed) ~ .sidebar-overlay,
    .pagelayout-incourse .modern-sidebar.user-expanded:not(.collapsed) ~ .sidebar-overlay {
        opacity: 1;
        visibility: visible;
    }
}

/* ============================================
   ANIMATIONS - SUBTLE FOR ACADEMI
   ============================================ */

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.modern-sidebar.left {
    animation: slideInLeft 0.3s ease-out;
}

.modern-sidebar.right {
    animation: slideInRight 0.3s ease-out;
}

/* Nav items subtle fade */
.nav-item {
    animation: fadeInNav 0.4s ease-out backwards;
}

.nav-item:nth-child(1) { animation-delay: 0.05s; }
.nav-item:nth-child(2) { animation-delay: 0.08s; }
.nav-item:nth-child(3) { animation-delay: 0.11s; }
.nav-item:nth-child(4) { animation-delay: 0.14s; }
.nav-item:nth-child(5) { animation-delay: 0.17s; }
.nav-item:nth-child(6) { animation-delay: 0.20s; }
.nav-item:nth-child(7) { animation-delay: 0.23s; }

@keyframes fadeInNav {
    from {
        opacity: 0;
        transform: translateX(-5px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   TOOLTIPS - ACADEMI STYLE
   ============================================ */

.modern-sidebar.collapsed .nav-link {
    position: relative;
}

.modern-sidebar.collapsed .nav-link::after {
    content: attr(title);
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    background: #2c3e50;
    color: #ffffff;
    padding: 0.5rem 0.875rem;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    font-size: 0.85rem;
    z-index: 1042;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.modern-sidebar.collapsed.right .nav-link::after {
    left: auto;
    right: calc(100% + 10px);
}

.modern-sidebar.collapsed .nav-link:hover::after {
    opacity: 1;
}

/* Arrow for tooltip */
.modern-sidebar.collapsed .nav-link::before {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-right-color: #2c3e50;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modern-sidebar.collapsed.right .nav-link::before {
    left: auto;
    right: 100%;
    border-right-color: transparent;
    border-left-color: #2c3e50;
}

.modern-sidebar.collapsed .nav-link:hover::before {
    opacity: 1;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.sidebar-toggle:focus,
.nav-link:focus {
    outline: 2px solid var(--sidebar-primary-color);
    outline-offset: -2px;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .modern-sidebar {
        border: 2px solid #000000;
    }

    .nav-link {
        border-width: 2px;
    }

    .nav-item.active .nav-link {
        font-weight: 700;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .modern-sidebar,
    .sidebar-overlay,
    .sidebar-toggle {
        display: none !important;
    }

    body,
    #page,
    #page-wrapper {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
}

/* ============================================
   ACADEMI THEME SPECIFIC ADJUSTMENTS
   ============================================ */

/* Match Academi's card style */
.sidebar-user {
    border-radius: 0;
}

/* Match Academi's button style */
.sidebar-toggle {
    font-weight: 500;
}

/* Match Academi's navigation style */
.nav-link {
    font-weight: 500;
}

/* Ensure sidebar works with Academi's layout on standard pages */
.pagelayout-mydashboard .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page-wrapper,
.pagelayout-standard .modern-sidebar.left.user-expanded:not(.collapsed) ~ #page-wrapper {
    margin-left: var(--sidebar-width) !important;
}

/* Academi navbar compatibility */
#page-navbar {
    transition: var(--sidebar-transition);
}

.modern-sidebar.left.user-expanded:not(.collapsed) ~ * #page-navbar {
    margin-left: 0;
}