/* Modern Sidebar Styling for School Pro Parent Portal */

:root {
    --sidebar-bg: rgba(42, 63, 84, 0.95); /* Darker base with transparency */
    --sidebar-glass-bg: rgba(15, 42, 42, 0.9); /* Subtly greener/teal darker tint */
    --accent-green: #1abb9c;
    --accent-blue: #2e59d9;
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    --hover-bg: rgba(255, 255, 255, 0.08);
    --transition-speed: 0.3s;
}

/* Sidebar Container Enhancement */
@media (min-width: 992px) {
    body.nav-md .left_col.menu_fixed {
        width: 60px !important;
        background: var(--sidebar-glass-bg) !important;
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 4px 0 25px rgba(0, 0, 0, 0.2);
        z-index: 1001;
        padding: 0 !important; /* Reset padding to ensure symmetry */
    }
}

/* Force full width and center alignment for internal containers */
.left_col.scroll-view, 
.menu_section, 
.nav.side-menu {
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

@media (min-width: 992px) {
    body.nav-md .right_col {
        margin-left: 60px !important;
        padding-left: 8px !important; /* Extremely tight gap */
    }

    body.nav-md .top_nav {
        margin-left: 60px !important;
    }
}

/* Sidebar Scroll View */
.left_col.scroll-view {
    background: transparent !important;
}

/* Section Headers */
.menu_section h3 {
    color: var(--accent-green);
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 15px 0 10px 0;
    text-align: center;
    opacity: 0.9;
    text-shadow: none !important;
}

/* Main Menu Links */
.nav.side-menu > li > a {
    color: var(--text-primary) !important;
    font-weight: 600;
    padding: 12px 2px !important;
    margin: 5px 2px !important;
    border-radius: 10px;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    display: flex !important;
    position: relative;
    overflow: visible;
}

@media (min-width: 992px) {
    .nav.side-menu > li > a {
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }
}

.nav.side-menu > li > a i {
    color: var(--accent-green) !important;
    transition: transform var(--transition-speed) ease, color var(--transition-speed) ease;
    opacity: 1;
}

@media (min-width: 992px) {
    .nav.side-menu > li > a i {
        font-size: 20px !important;
        width: auto !important;
        margin-right: 0 !important;
        margin-bottom: 6px !important;
        text-align: center;
    }
}

.nav.side-menu > li > a span {
    font-size: 8px !important;
    line-height: 1.1 !important;
    display: block !important;
    margin-top: 2px;
}

/* Hover Effects */
.nav.side-menu > li > a:hover {
    background: var(--hover-bg) !important;
    transform: translateX(4px);
}

.nav.side-menu > li > a:hover i {
    transform: scale(1.2) rotate(-5deg);
    color: #fff;
}

/* Active State Badge */
.nav.side-menu > li.active > a {
    background: linear-gradient(135deg, rgba(26, 187, 156, 0.2) 0%, rgba(26, 187, 156, 0.05) 100%) !important;
    color: var(--accent-green) !important;
    border-right: none !important;
}

.nav.side-menu > li.active > a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    height: 60%;
    width: 4px;
    background: var(--accent-green);
    border-radius: 0 4px 4px 0;
    box-shadow: 0 0 10px var(--accent-green);
}

/* Child Menu (Submenus) */
.nav.child_menu {
    background: var(--sidebar-glass-bg) !important;
    margin: 4px 2px 10px 2px !important;
    border-radius: 0 10px 10px 0;
    padding: 6px 0 !important;
    overflow: hidden;
    position: relative;
    box-shadow: 5px 5px 20px rgba(0,0,0,0.4);
    display: none;
    border: 1px solid rgba(255,255,255,0.1);
    border-left: 2px solid var(--accent-green); /* Matching the mobile emerald accent */
    width: 180px !important; /* Widened to 180px for full label visibility */
}

/* Visibility Control - Only expand when specifically opened */
.nav.side-menu > li.open .child_menu {
    display: block !important;
}

.nav.child_menu li a {
    padding: 5px 12px !important;
    font-size: 11px !important;
    line-height: normal !important;
    min-height: 0 !important;
    color: #fff !important; 
    transition: all var(--transition-speed) ease;
    display: grid !important;
    grid-template-columns: 24px 1fr; /* Fixed icon column to solve alignment */
    align-items: center !important;
    white-space: nowrap !important;
    gap: 10px; /* Consistent spacing between icon and text */
}

.nav.child_menu li a:hover {
    color: var(--accent-green) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

.nav.child_menu li a i {
    font-size: 14px !important;
    text-align: center !important;
    width: 24px !important;
    color: var(--accent-green) !important;
    display: flex;
    justify-content: center;
    transition: color var(--transition-speed) ease;
}

/* Chevron Rotation (Small indicator for stacked menu) */
.nav.side-menu li a span.fas.fa-chevron-down {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--transition-speed) ease;
    font-size: 8px !important;
    color: var(--text-muted);
    font-weight: 900;
    display: inline-block;
    width: auto;
    height: auto;
}

/* Specific adjustment for Payments chevron as requested */
#liPayments > a span.fas.fa-chevron-down {
    top: 58%;
    right: 12px;
}

/* Small Sidebar Mode (Collapsed) - Now normalized to 60px */
@media (min-width: 992px) {
    body.nav-sm .left_col.menu_fixed {
        width: 60px !important;
    }

    body.nav-sm .right_col {
        margin-left: 60px !important;
    }
}

@media (min-width: 992px) {
    body.nav-sm .nav.side-menu > li > a {
        padding: 15px 0 !important;
        margin: 4px 5px !important;
        justify-content: center;
    }

    body.nav-sm .nav.side-menu > li > a i {
        margin-right: 0 !important;
        font-size: 22px !important;
    }

    body.nav-sm .nav.side-menu > li > a span {
        display: none !important;
    }
}

/* Modern Toggle Button */
#menu_toggle {
    color: var(--sidebar-bg);
    transition: color var(--transition-speed) ease;
}

#menu_toggle:hover {
    color: var(--accent-green);
}

/* Scrollbar Customization for Glassmorphism */
.mCSB_dragger_bar {
    background-color: rgba(255, 255, 255, 0.2) !important;
    width: 4px !important;
}

.mCSB_dragger:hover .mCSB_dragger_bar {
    background-color: rgba(26, 187, 156, 0.6) !important;
}

.mCSB_draggerRail {
    background-color: transparent !important;
}

/* Animations */
@keyframes pulseGlow {
    0% { box-shadow: 0 0 5px rgba(26, 187, 156, 0.4); }
    50% { box-shadow: 0 0 15px rgba(26, 187, 156, 0.6); }
    100% { box-shadow: 0 0 5px rgba(26, 187, 156, 0.4); }
}

.nav.side-menu > li.active > a i {
    animation: pulseGlow 2s infinite;
}

/* Ensure child menus are crisp */
#sidebar-menu .nav.child_menu li:before {
    display: none !important; /* Remove old bullet points */
}

#sidebar-menu .nav.child_menu li {
    padding-left: 0 !important;
}

/* --- Mobile Drawer Implementation --- */
@media (max-width: 991px) {
    /* Narrow sidebar drawer to match desktop width exactly (60px) */
    .left_col.menu_fixed {
        width: 60px !important;
        left: -60px !important;
        position: fixed !important;
        height: 100vh !important;
        z-index: 9999 !important;
        background: var(--sidebar-glass-bg) !important;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        visibility: visible !important;
        top: 0;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        display: block !important;
    }

    /* Show sidebar when nav-open class is on body */
    body.nav-open .left_col.menu_fixed {
        left: 0 !important;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    /* Content should take full width on mobile */
    body.nav-md .right_col,
    body.nav-md .top_nav,
    body.nav-sm .right_col,
    body.nav-sm .top_nav {
        margin-left: 0 !important;
        width: 100% !important;
    }

    /* Vertical stack for mobile drawer links, matched to 60px */
    .nav.side-menu > li > a {
        flex-direction: column !important;
        text-align: center !important;
        padding: 10px 1px !important;
        margin: 4px 1px !important;
        justify-content: center !important;
    }

    .nav.side-menu > li > a i {
        margin-right: 0 !important;
        margin-bottom: 5px !important;
        font-size: 22px !important;
    }

    .nav.side-menu > li > a span {
        font-size: 9px !important;
        margin-top: 2px !important;
        line-height: normal !important;
        white-space: normal !important;
        word-break: break-word !important;
    }

    /* Active state for mobile */
    .nav.side-menu > li.active > a::before {
        left: -3px;
        height: 60%;
        top: 20%;
    }

    /* Submenu Flyout Adjustments for 60px Mobile Drawer */
    .nav.child_menu {
        width: 180px !important; /* Significantly wider for legibility */
        margin: 2px 0 10px 5px !important;
        position: relative !important;
        box-shadow: 5px 5px 15px rgba(0,0,0,0.4) !important;
        background: rgba(20, 35, 35, 0.95) !important;
        border-radius: 0 12px 12px 0;
        border-left: 2px solid var(--accent-green);
    }

    .nav.child_menu li a {
        padding: 10px 12px !important;
        font-size: 11px !important;
        display: flex !important;
        flex-direction: row !important;
        align-items: center !important;
        text-align: left !important;
        gap: 10px;
        white-space: nowrap !important;
    }

    .nav.child_menu li a i {
        font-size: 14px !important;
        width: 20px !important;
        margin-bottom: 0 !important;
    }
}

/* Sidebar Overlay (Scrim) */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9998;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.nav-open .sidebar-overlay {
    display: block;
    opacity: 1;
}

/* Fix for Bright White Selection backfill */
.nav.side-menu > li.active,
.nav.side-menu > li.open,
.nav.side-menu > li.current-page {
    background: transparent !important;
}

.nav.side-menu > li.active > a,
.nav.side-menu > li.open > a,
.nav.side-menu > li.current-page > a {
    background: linear-gradient(135deg, rgba(26, 187, 156, 0.15) 0%, rgba(26, 187, 156, 0.05) 100%) !important;
    box-shadow: inset 0 0 15px rgba(26, 187, 156, 0.1) !important;
}

/* Hard reset for Gentelella/Bootstrap defaults that use white */
.nav.side-menu > li.active-sm, 
.nav.side-menu > li.active-md {
    background: transparent !important;
}