/* css/new-style.css */

:root {
    --brand-primary: #2a3b8f;    /* Deep Royal Indigo */
    --brand-secondary: #1e2963;  /* Midnight Navy */
    --brand-accent: #ffb703;     /* Amber Gold */
    --feedback-success: #198754; /* Emerald Green */
    --feedback-danger: #dc3545;  /* Crimson Red */
}

/* =======================================================
   🌍 GLOBAL STRUCTURE & BOX FIX RESETS
   ======================================================= */
html, body {
    max-width: 100% !important;
    overflow-x: hidden !important; /* Entirely stops mobile page from sideways drifting */
    background-color: #f8f9fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #212529;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
    text-decoration: none;
}
.logo-text .accent {
    color: var(--brand-accent);
}

/* =======================================================
   🍔 RESPONSIVE NAVBAR & MOBILE HAMBURGER CONSOLE
   ======================================================= */
.navigation-bar {
    background-color: var(--brand-secondary) !important;
}

.navigation-bar .container {
    overflow: visible !important; 
}

#nav-exams-dropdown-root {
    overflow: visible !important;
}

/* Base Link Layout State Settings */
.navigation-bar .nav-link {
    color: #ffffff !important;
    font-weight: 500;
    padding: 12px 20px !important;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.navigation-bar .nav-link:hover, 
.navigation-bar .nav-link.active {
    background-color: var(--brand-accent) !important;
    color: var(--brand-secondary) !important;
}

/* Clear native borders from mobile hamburger trigger button box profiles */
.navbar-toggler:focus {
    box-shadow: none !important;
    outline: none !important;
}

.navbar-toggler i {
    color: #ffffff !important;
}

/* 📱 BOOTSTRAP STATE INTEGRATION: Fixes frozen mobile collapse panels */
@media (max-width: 991.98px) {
    .navigation-bar {
        overflow: visible !important;
        padding-left: 14px !important;
        padding-right: 14px !important;
    }
    
    /* Forces layout container grid to reveal expanding children cleanly */
    .navbar-collapse {
        overflow: visible !important;
    }

    /* Converts structural items into blocks that don't float sideways */
    .navigation-bar .nav-link {
        padding: 10px 16px !important;
        width: 100% !important;
        display: block !important;
        text-align: left;
    }

    /* Aligns mobile drop-down menu links context to match slate-indigo color background */
    #nav-exams-dropdown-menu {
        position: static !important; /* Discards floating absolute maps layout parameters */
        width: 100% !important;
        box-shadow: none !important;
        border: 1px solid rgba(255, 255, 255, 0.1) !important;
        background-color: rgba(255, 255, 255, 0.05) !important;
        margin-top: 4px !important;
        margin-bottom: 8px !important;
    }
    
    #nav-exams-dropdown-menu .dropdown-item {
        color: rgba(255, 255, 255, 0.9) !important; /* Swaps dropdown text to high-contrast clear white */
    }
    
    #nav-exams-dropdown-menu .dropdown-item:hover {
        background-color: rgba(255, 255, 255, 0.15) !important;
        color: var(--brand-accent) !important;
    }
}

/* 💻 DESKTOP DYNAMIC HOVER DROPDOWN INTERACTION MATRIX */
@media (min-width: 992px) {
    #nav-exams-dropdown-menu {
        display: block !important;
        opacity: 0;
        visibility: hidden;
        transform: translateY(12px);
        transition: opacity 0.22s cubic-bezier(0.4, 0, 0.2, 1), 
                    transform 0.22s cubic-bezier(0.4, 0, 0.2, 1), 
                    visibility 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #nav-exams-dropdown-root:hover #nav-exams-dropdown-menu {
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) !important;
    }
}

/* Base Dropdown Card Layout Panel Profile settings */
#nav-exams-dropdown-menu {
    background: #ffffff !important;
    border-radius: 12px !important;
    border: 1px solid rgba(0, 0, 0, 0.05) !important;
    box-shadow: 0 10px 30px rgba(30, 41, 99, 0.12) !important;
    padding: 10px !important;
    min-width: 240px !important;
}

#nav-exams-dropdown-menu .dropdown-item {
    font-size: 0.92rem !important;
    font-weight: 600 !important;
    color: #333333 !important;
    padding: 10px 14px !important;
    border-radius: 8px !important;
    border-left: 3px solid transparent !important;
    transition: all 0.2s ease-in-out !important;
    display: flex;
    align-items: center;
}

#nav-exams-dropdown-menu .dropdown-item:hover,
#nav-exams-dropdown-menu .dropdown-item:focus {
    background-color: rgba(42, 59, 143, 0.06) !important;
    color: #1e2963 !important;
    border-left: 3px solid #ffb703 !important;
    transform: translateX(4px);
}

#nav-exams-dropdown-menu .dropdown-item:hover i {
    color: #ffb703 !important;
}

/* Dropdown Caret Custom Arrow styling configuration rules */
.dropdown-toggle::after {
    display: inline-block;
    margin-left: 0.45em;
    vertical-align: 0.255em;
    content: "";
    border-top: 0.3em solid;
    border-right: 0.3em solid transparent;
    border-bottom: 0;
    border-left: 0.3em solid transparent;
    transition: transform 0.2s ease-in-out;
}

@media (min-width: 992px) {
    #nav-exams-dropdown-root:hover .dropdown-toggle::after {
        transform: rotate(180deg);
        color: #ffb703;
    }
}

/* =======================================================
   🔮 UPGRADED DROP-DOWN SYNC HOVER INDICATORS
   ======================================================= */
select.dropdown-field-loading {
    background-color: #f1f3f9 !important;
    color: #718096 !important;
    font-style: italic;
    cursor: wait !important;
    border-color: #cbd5e1 !important;
    background-image: linear-gradient(45deg, transparent 50%, #718096 50%), linear-gradient(135deg, #718096 50%, transparent 50%) !important;
    animation: portalDropdownPulseShimmer 1.8s infinite ease-in-out;
}

@keyframes portalDropdownPulseShimmer {
    0%, 100% { background-color: #f1f3f9; opacity: 0.85; }
    50% { background-color: #e2e8f0; opacity: 1; }
}

/* =======================================================
   💎 CORE COMPONENT VISUAL DESIGNS
   ======================================================= */
.hero-warp {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
    color: #ffffff;
    padding: 50px 0;
    text-align: center;
    border-bottom: 4px solid var(--brand-accent);
}

.search-box-container {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    padding: 6px;
    max-width: 650px;
    margin: 0 auto;
}
.search-box-container .form-control {
    border: none;
    border-radius: 50px;
    padding-left: 20px;
}
.search-box-container .form-control:focus { box-shadow: none; }
.search-box-container .btn-search {
    background-color: var(--brand-accent);
    color: var(--brand-secondary);
    border-radius: 50px;
    padding: 8px 25px;
    font-weight: bold;
    border: none;
}

/* Updated Elegant Thin-Box Category Banner Profile */
.category-banner {
    background: #ffffff !important;
    border: 1px solid #dee2e6 !important;
    border-left: 4px solid var(--brand-primary) !important;
    padding: 16px 20px !important;
    color: #212529 !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02) !important;
}

#banner-breadcrumbs {
    color: #6c757d !important;
    font-weight: 500;
}

#banner-title {
    color: var(--brand-secondary) !important;
    font-size: 1.25rem !important;
    margin: 0;
}

.section-title {
    border-bottom: 2px solid var(--brand-primary);
    padding-bottom: 8px;
    margin-bottom: 25px;
    font-weight: 700;
    color: var(--brand-primary);
}

.cat-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.cat-main-card {
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none !important;
    transition: all 0.2s ease-in-out;
}
.cat-main-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(42, 59, 143, 0.08);
    border-color: var(--brand-primary);
}
.cat-main-card:hover .cat-card-title { color: var(--brand-primary) !important; }
.cat-card-title {
    font-weight: 700;
    color: #495057;
    text-transform: uppercase;
}

.option-row {
    transition: opacity 0.2s ease-in-out, background-color 0.15s ease;
    border-radius: 6px;
}
.option-row:hover:not(.fade-out) {
    background-color: rgba(42, 59, 143, 0.04);
}
.option-row.fade-out { opacity: 0.30; }
.feedback-icon {
    font-weight: 800;
    font-size: 1.15rem;
    margin-left: 10px;
    display: inline-block;
}
.icon-correct { color: var(--feedback-success); }
.icon-incorrect { color: var(--feedback-danger); }

.solution-box {
    border-left: 5px solid var(--brand-accent);
    border-radius: 0 8px 8px 0;
}

.chapter-badge {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid var(--brand-primary);
    background-color: #ffffff;
    color: var(--brand-primary);
    transition: all 0.2s ease;
    display: inline-block;
}
.chapter-badge.active {
    background-color: var(--brand-primary);
    color: #ffffff;
}

.wa-floating-btn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(37,211,102,0.3);
    z-index: 1050;
    transition: transform 0.2s ease;
}
.wa-floating-btn i { color: #fff; font-size: 1.8rem; }
.wa-floating-btn:hover { transform: scale(1.1); }

@media (max-width: 576px) {
    .action-group-container {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 10px;
    }
    .action-group-container .btn {
        width: 100% !important;
    }
}

/* =======================================================
   📈 LAYOUT CONTENT CONTAINER CONSTRAINTS
   ======================================================= */
.math-content, .card, h3, p {
    word-wrap: break-word !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
}

#load-more-container nav::-webkit-scrollbar {
    display: none !important; /* Cleanly clears ugly sliders from mobile numbers tracking ribbon */
}

@media (max-width: 991.98px) {
    .row {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
    .container {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }
}

#chapter-tabs-container {
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
}
#chapter-tabs-container::-webkit-scrollbar {
    height: 5px;
}
#chapter-tabs-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}
#chapter-tabs-container::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 10px;
}
#chapter-tabs-container::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.animate-pulse {
    animation: portalPulse 1.5s infinite ease-in-out;
}

@keyframes portalPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.loader-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}

.question-text-wrapper {
    text-justify: inter-word; /* Creates an even, professional distribution of word text layouts */
    letter-spacing: -0.01em;  /* Enhances modern scannability */
}

/* Subtle accent transformation for the new repositioned reset link */
.reset-q-btn {
    transition: color 0.15s ease, opacity 0.15s ease;
}

.reset-q-btn:hover {
    color: var(--brand-accent) !important;
}

.pointer-events-none {
    pointer-events: none;
}

/* Solution slider layout container frame */
.solution-box-animate-wrapper {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.25s ease, 
                transform 0.25s ease;
}

/* Active open animation modifier state class */
.solution-box-animate-wrapper.show-open {
    max-height: 500px; /* Safe upper limit boundary to allow breathing room for explanation strings */
    opacity: 1;
    transform: translateY(0);
}