html, body {
    scroll-behavior: smooth;
    overscroll-behavior: none;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to-br, #f0fdfa, #d9f99d);
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport for mobile browsers */
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    overflow: auto; /* Default: allow scroll on small screens */
}

.layout {
    display: flex;
    flex: 1;
    flex-direction: row;
    gap: 0.5rem;
    padding: 0.125rem;
    margin-top: 0;
    margin-bottom: 0.28125rem;
    min-height: calc(100vh - 174px);
    min-height: calc(100dvh - 174px);
    height: calc(100vh - 174px);
    height: calc(100dvh - 174px);
    overflow: auto;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: linear-gradient(135deg, #49A078, #3e8865);
    color: white;
    padding: 0.75rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin: 0.125rem 0;
    height: 100%; /* Full height of layout */
    max-height: calc(100vh - 114px - 0.25rem);
    max-height: calc(100dvh - 114px - 0.25rem); /* Dynamic viewport fallback */
    overflow-y: auto;
    overscroll-behavior: none;
    scrollbar-width: thin;
    scrollbar-color: #facc15 #3e8865;
    border-radius: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: #3e8865;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #facc15;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.sidebar-item:hover {
    background: rgba(250, 204, 21, 0.2);
}

.sidebar-link {
    color: #fffbe6;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
}

.sidebar-link.active,
.sidebar-item.active .sidebar-link {
    color: #facc15;
    font-weight: 800;
    background: rgba(250, 204, 21, 0.2);
}

.sidebar-link:hover {
    color: #facc15;
    transform: translateX(5px);
}

.sidebar-item .slide-number {
    font-weight: bold;
    color: #facc15;
    width: 2rem;
    text-align: right;
    margin-right: 0.5rem;
}

.sidebar-footer {
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
    color: #e5e7eb;
}

/* Main Content */
.main-content {
    flex: 1;
    background: linear-gradient(145deg, #ffffff, #f1f5f9);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    overscroll-behavior: none;
    box-sizing: border-box;
}

.max-w-5xl {
    width: 100%;
    max-width: 1280px;
    min-height: calc(100vh - 124px);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    box-sizing: border-box;
}

/* Enhanced slide indicator styling */
.slide-number-display {
    background: linear-gradient(135deg, #49A078, #3e8865);
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 2px 8px rgba(73, 160, 120, 0.3);
    user-select: none;
}

.slide-number-display:hover {
    background: linear-gradient(135deg, #3e8865, #2d6b4f);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(73, 160, 120, 0.4);
}

.slide-number-display .slide-text {
    font-size: 1rem;
    letter-spacing: 0.5px;
}

.slide-number-display i {
    font-size: 0.9rem;
    opacity: 0.8;
}

.slide-number-display .fa-chevron-down {
    transition: transform 0.3s ease;
}

.slide-number-display:hover .fa-chevron-down {
    transform: translateY(2px);
}

/* Slide Navigator Modal */
.slide-navigator-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: all 0.3s ease;
    animation: fadeIn 0.3s ease;
}

.slide-navigator-modal.show {
    opacity: 1;
    visibility: visible;
}

.slide-navigator-content {
    background: white;
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.slide-navigator-header {
    background: linear-gradient(135deg, #49A078, #3e8865);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 12px 12px 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.slide-navigator-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.close-navigator {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.close-navigator:hover {
    background: rgba(255, 255, 255, 0.2);
}

.slide-navigator-body {
    padding: 1.5rem;
}

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

.slide-item {
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.slide-item:hover {
    border-color: #49A078;
    background: #f0f9f4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(73, 160, 120, 0.15);
}

.slide-item.current {
    border-color: #49A078;
    background: linear-gradient(135deg, #49A078, #3e8865);
    color: white;
}

.slide-item-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: #49A078;
    margin-bottom: 0.5rem;
}

.slide-item.current .slide-item-number {
    color: #facc15;
}

.slide-item-title {
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.4;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Navigation feedback indicators */
.nav-feedback {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(73, 160, 120, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-feedback.show {
    opacity: 1;
}

.nav-feedback.left {
    left: 20px;
}

.nav-feedback.right {
    right: 20px;
}

.nav-feedback i {
    font-size: 16px;
}

.slide-container-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    flex: 1;
    position: relative;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.slide {
    width: 90%;
    max-width: 800px;
    background: linear-gradient(135deg, #ffffff, #e6fffa);
    border: 1px solid #e5e7eb;
    padding: 2rem 2rem 6rem 2rem; /* Increased bottom padding for nav/footer */
    min-height: 350px;
    display: none;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    box-sizing: border-box;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overscroll-behavior: none;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.slide:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    transform: scale(1.01);
}

.slide.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.slide:not(.active) {
    opacity: 0;
    transform: translateY(20px);
}

.slide-content {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* Left-align content by default for Computer Basicss */
    gap: 1.5rem;
    text-align: left; /* Ensure paragraphs and headings are left aligned */
    position: relative;
    z-index: 5;
}

.slide-content h2 {
    color: #0f172a; /* dark heading for strong contrast */
    font-weight: 700;
    font-size: 1.75rem;
    margin-bottom: 1rem;
    transition: color 0.25s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.slide-content h2:hover {
    color: #facc15;
}

.slide-content p {
    color: #111827; /* dark body text for readability */
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.navigation {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 0 1.5rem 0;
    box-sizing: border-box;
    position: relative;
    left: unset;
    bottom: unset;
    margin: 0;
}

.nav-btn {
    background: #49A078;
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 100px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    position: relative;
    outline: none;
}

.nav-btn:focus {
    outline: none !important;
    box-shadow: none !important;
}

.nav-btn:hover {
    background: #facc15;
    color: #256d4f;
    /* No transform or movement on hover for stability */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.nav-btn:disabled {
    background: #d1d5db;
    cursor: not-allowed;
    box-shadow: none;
}

/* Tooltips for Navigation Buttons */
.nav-btn[data-tip]:hover::after {
    content: attr(data-tip);
    position: absolute;
    left: 50%;
    bottom: 100%;
    transform: translateX(-50%);
    background: #256d4f;
    color: white;
    padding: 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 20;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.nav-btn[data-tip]:hover::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 100%;
    transform: translateX(-50%) translateY(5px);
    border: 5px solid transparent;
    border-top-color: #256d4f;
    z-index: 20;
}

/* Lists in Computer Basicss: preserve list markers when the slide provides them.
   For slides that do not include any list markup, we add a presentation-only
   "auto-bullets" class at runtime which visually prefixes paragraphs with bullets.
   This preserves original slide HTML and only affects presentation. */
.highlight-list {
    /* allow default list markers; provide consistent left padding */
    list-style: disc outside;
    padding-left: 1.25rem;
    width: 100%;
    max-width: 600px;
    margin: 1rem 0;
}

.highlight-list li {
    color: #111827; /* dark list item text */
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    transition: background 0.25s ease;
    position: relative;
    cursor: default; /* not interactive by default */
    text-align: left; /* ensure left alignment */
}

.highlight-list li:hover {
    background: transparent; /* avoid hover effects that shift layout */
    color: #111827;
}

/* Presentation-only auto-bullets for slides that lack list markup.
   We target paragraphs inside .slide-content when JS adds .auto-bullets. */
.slide-content.auto-bullets p {
    position: relative;
    padding-left: 1.4rem;
    margin-bottom: 0.6rem;
}
.slide-content.auto-bullets p::before {
    content: "\2022"; /* bullet character */
    position: absolute;
    left: 0;
    top: 0.15rem;
    color: #256d4f;
    font-size: 1.05rem;
    line-height: 1;
}

/* Header */
nav {
    background: #49A078;
    color: white;
    padding: 1rem 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    height: 4rem;
}

nav .container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.slogan-container {
    flex: 1 1 0%;
    position: relative;
    overflow: hidden;
    min-width: 0;
    height: 2rem;
    display: flex;
    align-items: center;
}

.slogan-marquee-track {
    display: flex;
    width: max-content;
    position: absolute;
    left: 0; /* anchor left to prevent right-side clipping */
    top: 0;
    height: 100%;
    animation: marquee-loop 12s linear infinite;
    max-width: 100%;
    overflow: hidden;
}

.slogan-marquee {
    white-space: nowrap;
    color: #facc15;
    font-weight: bold;
    font-size: 1rem;
    display: inline-block;
    padding-right: 3rem;
}

@keyframes marquee-loop {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

.hamburger {
    display: none;
    font-size: 1.1rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 0.375rem;
    padding: 0.5rem 0.75rem;
    transition: all 0.3s ease;
    position: relative;
}

.hamburger:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Footer */
.footer {
    background: #DFF3EA;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding: 0.5rem 1rem;
    text-align: center;
    position: relative;
    height: 50px;
    min-height: 50px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
}

.footer .container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    margin-left: -1rem;
}

.footer-socials {
    display: flex;
    gap: 0.75rem;
    margin: 0;
    flex-shrink: 0;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.footer-link {
    color: #49A078;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
    white-space: nowrap;
}

.footer-link:hover {
    color: #3e8865;
}

.footer-copyright {
    color: #256d4f;
    text-align: right;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: absolute;
    right: 1rem;
}

/* Hide footer socials on medium screens to prevent overlap */
@media (max-width: 1024px) {
    .footer-socials {
        display: none !important;
    }
}

/* Chat Button and Widget */
#chatButton {
    bottom: 50px;
    right: 6px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#chatWidget {
    bottom: 80px;
    right: 6px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Slide-specific styles */
.demo-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: #f1f5f9;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.demo-table th, .demo-table td {
    border: 1px solid #e5e7eb;
    padding: 0.75rem;
    text-align: left;
}

.quiz-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quiz-option {
    background: #f1f5f9;
    padding: 0.75rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.quiz-option:hover {
    background: #fffbe6;
    color: #256d4f;
    transform: scale(1.02);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.quiz-option.correct {
    background: #059669;
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quiz-option.wrong {
    background: #dc2626;
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quiz-feedback {
    display: none;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    border-radius: 0.25rem;
    background: #f1f5f9;
}

/* Desktop navigation responsive adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-links {
        gap: 0.3rem !important;
        flex-shrink: 1 !important;
    }
    
    .nav-link {
        padding: 0.3rem 0.5rem !important;
        font-size: 0.7rem !important;
        flex-shrink: 1 !important;
    }
}

@media (min-width: 1025px) and (max-width: 1200px) {
    .nav-links {
        gap: 0.5rem !important;
        flex-shrink: 1 !important;
    }
    
    .nav-link {
        padding: 0.4rem 0.6rem !important;
        font-size: 0.75rem !important;
        flex-shrink: 1 !important;
    }
}

@media (max-width: 768px) {
    .slogan-container {
        display: none !important;
    }
    .nav-links {
        display: none !important;
    }
    .hamburger {
        display: block !important;
        font-size: 1rem !important;
        cursor: pointer !important;
        background: rgba(255, 255, 255, 0.1) !important;
        color: white !important;
        border-radius: 6px !important;
        padding: 0.5rem 0.75rem !important;
        transition: all 0.3s ease !important;
        position: relative !important;
        min-width: 40px !important;
        height: 36px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    .hamburger:hover {
        background: rgba(255, 255, 255, 0.2) !important;
        border-color: rgba(255, 255, 255, 0.5) !important;
        transform: scale(1.05) !important;
    }
    .hamburger i {
        font-size: 0.9rem !important;
    }
}

/* MOBILE RESPONSIVE OVERRIDES (from internal style block) */
/* small override copied from databasics to match mobile styling exactly */
/* Mobile Layout Overrides */
@media (max-width: 768px) {
    .sidebar {
        display: none !important;
    }
    .slogan-container { 
        display: none !important; 
    }
    .main-content {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0.5rem !important;
        box-sizing: border-box;
    }
    .main-content > div {
        max-width: 100% !important;
        width: 100% !important;
    }
    /* Ensure proper positioning context for hamburger menu */
    nav .container > div:last-child {
        position: relative !important;
    }
    .slide-number-display {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: relative !important;
        font-size: 0.75rem !important;
        padding: 0.35rem 0.6rem !important;
        margin: 0 auto 0.5rem auto !important;
        gap: 0.3rem !important;
        width: 85% !important;
        max-width: 320px !important;
        box-sizing: border-box !important;
        z-index: 100 !important;
        background: linear-gradient(135deg, #49A078, #3e8865) !important;
        color: white !important;
        border-radius: 12px !important;
        justify-content: center !important;
        align-items: center !important;
        min-height: auto !important;
        line-height: 1.2 !important;
    }
    .slide-number-display .slide-text {
        font-size: 0.8rem !important;
        white-space: nowrap !important;
        color: white !important;
    }
    .slide-number-display i {
        font-size: 0.7rem !important;
        color: white !important;
        opacity: 0.9 !important;
    }
    .slide-navigator-content {
        margin: 10px;
        max-height: 90vh;
    }
    .slide-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    .slide-navigator-header {
        padding: 0.75rem 1rem;
    }
    .slide-navigator-body {
        padding: 1rem;
    }
    .navigation {
        position: static !important;
        flex-direction: row !important;
        margin-top: 0.5rem !important;
        gap: 0.25rem !important;
        width: 100% !important;
        padding-right: 0 !important;
        justify-content: center !important;
    }
    .nav-btn {
        width: 80px !important;
        padding: 0.4rem !important;
        font-size: 0.95rem !important;
    }
    .hamburger {
        display: block !important;
        font-size: 1rem !important;
        cursor: pointer !important;
        background: rgba(255, 255, 255, 0.1) !important;
        color: white !important;
        border-radius: 6px !important;
        padding: 0.5rem 0.75rem !important;
        transition: all 0.3s ease !important;
        position: relative !important;
        min-width: 40px !important;
        height: 36px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    .hamburger:hover {
        background: rgba(255, 255, 255, 0.2) !important;
        border-color: rgba(255, 255, 255, 0.5) !important;
        transform: scale(1.05) !important;
    }
    .hamburger i {
        font-size: 0.9rem !important;
    }
    .nav-links {
        display: none !important;
        position: absolute !important;
        top: 100% !important;
        right: 0 !important;
        width: 200px !important;
        background: linear-gradient(135deg, rgba(73, 160, 120, 0.85), rgba(62, 136, 101, 0.85)) !important;
        flex-direction: column !important;
        align-items: stretch !important;
        padding: 0.75rem !important;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
        border-radius: 8px !important;
        margin-top: 4px !important;
        border: 1px solid rgba(255, 255, 255, 0.2) !important;
        z-index: 1000 !important;
    }
    .nav-links.mobile-active {
        display: flex !important;
    }
    .nav-links li {
        margin: 0 !important;
        padding: 0 !important;
        list-style: none !important;
    }
    .nav-links a {
        display: block !important;
        padding: 0.65rem 0.85rem !important;
        font-size: 0.85rem !important;
        color: white !important;
        text-decoration: none !important;
        border-radius: 6px !important;
        transition: all 0.3s ease !important;
        margin-bottom: 3px !important;
        text-align: left !important;
        font-weight: 500 !important;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1) !important;
        background: rgba(255, 255, 255, 0.05) !important;
    }
    .nav-links a:hover {
        background: rgba(250, 204, 21, 0.2) !important;
        color: #facc15 !important;
        transform: translateX(3px) !important;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15) !important;
    }
    .nav-links a:last-child {
        margin-bottom: 0 !important;
    }
    .footer .container {
        flex-direction: column !important;
        gap: 0.5rem !important;
        text-align: center !important;
    }
    .footer {
        height: 50px !important;
        min-height: 50px !important;
        position: relative !important;
        margin-top: 0.5rem !important;
        bottom: unset !important;
        left: unset !important;
        right: unset !important;
        z-index: unset !important;
    }
    .footer-socials {
        display: none !important;
    }
    .footer-copyright {
        display: none !important;
    }
    .footer > div {
        align-items: flex-start !important;
    }
    .footer-copyright {
        text-align: center !important;
        font-size: 0.7rem !important;
    }
    #chatButton {
        bottom: 120px !important;
        right: 10px !important;
        z-index: 1000 !important;
    }
    #chatWidget {
        bottom: 140px !important;
        right: 10px !important;
        width: calc(100vw - 20px) !important;
        max-width: 320px !important;
    }
}

/* Responsive Design */
@media (min-width: 769px) {
    .sidebar {
        display: block;
    }
    .layout {
        flex-direction: row;
        margin-top: 0;
        margin-bottom: 0;
        height: auto;
    }
    .main-content {
        padding: 1rem;
    }
    .slide-container-wrapper {
        max-width: 1200px;
        min-height: calc(100vh - 204px);
    }
    .slide {
        max-width: none;
        padding: 2rem;
        min-height: 350px;
        max-height: calc(100vh - 204px);
    }
    .navigation {
        position: absolute;
        right: 0;
        top: 40%;
        transform: translateY(-50%);
        flex-direction: column;
        width: 120px;
    }
    .nav-btn {
        width: 100%;
        padding: 0.75rem;
    }
    .footer {
        height: 50px;
    }
}

/* --- Databasics slide typography and highlight styles for consistency --- */
.slide-content h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: #49A078;
    margin-bottom: 0.75rem;
    line-height: 1.1;
}
.slide-content p,
.slide-content li,
.slide-content .text-lg {
    color: #374151;
    font-size: 1.125rem;
}
.slide-content .highlight-list li {
    background: #f3f4f6;
    padding: 0.75rem;
    border-radius: 0.5rem;
}

/* Mobile Layout Overrides */
@media (max-width: 768px) {
    .sidebar {
        display: none !important;
    }
    .slogan-container { 
        display: none !important; 
    }
    .main-content {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0.5rem !important;
        box-sizing: border-box;
    }
    .main-content > div {
        max-width: 100% !important;
        width: 100% !important;
    }
    /* Ensure proper positioning context for hamburger menu */
    nav .container > div:last-child {
        position: relative !important;
    }
    .slide-number-display {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: relative !important;
        font-size: 0.75rem !important;
        padding: 0.35rem 0.6rem !important;
        margin: 0 auto 0.5rem auto !important;
        gap: 0.3rem !important;
        width: 85% !important;
        max-width: 320px !important;
        box-sizing: border-box !important;
        z-index: 100 !important;
        background: linear-gradient(135deg, #49A078, #3e8865) !important;
        color: white !important;
        border-radius: 12px !important;
        justify-content: center !important;
        align-items: center !important;
        min-height: auto !important;
        line-height: 1.2 !important;
    }
    .slide-number-display .slide-text {
        font-size: 0.8rem !important;
        white-space: nowrap !important;
        color: white !important;
    }
    .slide-number-display i {
        font-size: 0.7rem !important;
        color: white !important;
        opacity: 0.9 !important;
    }
    .slide-navigator-content {
        margin: 10px;
        max-height: 90vh;
    }
    .slide-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    .slide-navigator-header {
        padding: 0.75rem 1rem;
    }
    .slide-navigator-body {
        padding: 1rem;
    }
    .navigation {
        position: static !important;
        flex-direction: row !important;
        margin-top: 0.5rem !important;
        gap: 0.25rem !important;
        width: 100% !important;
        padding-right: 0 !important;
        justify-content: center !important;
    }
    .nav-btn {
        width: 80px !important;
        padding: 0.4rem !important;
        font-size: 0.95rem !important;
    }
    .slide-container-wrapper {
        width: 100% !important;
        padding: 0 0.5rem !important;
    }
    .slide {
        width: 90% !important;
        max-width: 800px !important;
        padding: 1.5rem 1rem 4rem 1rem !important;
        border-radius: 0.5rem !important;
    }
    /* Nav responsive fixes for narrow screens */
    nav {
        padding: 0.75rem !important;
    }
    nav .flex.items-center.justify-between {
        flex-wrap: wrap !important;
        gap: 0.5rem !important;
    }
    nav .flex.items-center.gap-3 {
        min-width: 0 !important;
        flex: 1 1 auto !important;
        overflow: hidden !important;
    }
    nav .flex.items-center.gap-3 span {
        font-size: 0.9rem !important;
        line-height: 1.2 !important;
        word-break: break-word !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        max-width: 100% !important;
    }
    nav .flex.items-center.gap-4:last-child {
        flex-shrink: 0 !important;
    }
}

/* Extra Small Devices (small phones, 320px-480px) */
@media (max-width: 480px) {
    .slide-number-display {
        font-size: 0.7rem !important;
        padding: 0.25rem 0.4rem !important;
        width: 95% !important;
        max-width: 260px !important;
        border-radius: 8px !important;
        gap: 0.2rem !important;
    }
    .slide-number-display .slide-text {
        font-size: 0.7rem !important;
    }
    .slide-number-display i {
        font-size: 0.6rem !important;
    }
    .main-content {
        padding: 0.2rem !important;
    }
    .nav-btn {
        width: 65px !important;
        padding: 0.25rem !important;
        font-size: 0.75rem !important;
    }
    .slide-navigator-content {
        margin: 5px;
        max-width: calc(100vw - 10px);
        border-radius: 8px;
    }
    .slide-navigator-header {
        padding: 0.5rem 0.75rem;
    }
    .slide-navigator-header h3 {
        font-size: 0.9rem;
    }
    .slide-item {
        padding: 0.75rem;
    }
    .slide-container-wrapper {
        width: 100% !important;
        padding: 0 0.25rem !important;
    }
    .slide {
        width: 95% !important;
        max-width: 500px !important;
        padding: 1rem 0.75rem 3rem 0.75rem !important;
        border-radius: 0.375rem !important;
    }
    /* Additional nav fixes for very small screens */
    nav {
        padding: 0.5rem !important;
        min-height: 44px !important;
        max-width: 100vw !important;
    }
    nav .flex.items-center.justify-between {
        gap: 0.5rem !important;
        width: 100% !important;
    }
    nav .flex.items-center.gap-3 {
        gap: 0.5rem !important;
        min-width: 0 !important;
        flex: 1 1 0% !important;
        overflow: hidden !important;
    }
    nav .flex.items-center.gap-3 img {
        width: 2rem !important;
        height: 2rem !important;
    }
    nav .flex.items-center.gap-3 span {
        font-size: 0.8rem !important;
        line-height: 1.2 !important;
        word-break: break-word !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        max-width: calc(100vw - 120px) !important;
    }
    nav .flex.items-center.gap-4 {
        gap: 0.25rem !important;
        flex-shrink: 0 !important;
    }
    nav .hamburger {
        padding: 0.4rem !important;
        min-width: 36px !important;
        height: 36px !important;
        font-size: 0.9rem !important;
        margin-left: 0.25rem !important;
        flex-shrink: 0 !important;
    }
    nav .hamburger i {
        font-size: 0.8rem !important;
    }
}

/* Extra Extra Small Devices (very small phones, under 360px) */
@media (max-width: 360px) {
    nav {
        padding: 0.25rem !important;
        min-height: 40px !important;
        max-width: 100vw !important;
    }
    nav .flex.items-center.justify-between {
        gap: 0.25rem !important;
        width: 100% !important;
    }
    nav .flex.items-center.gap-3 {
        gap: 0.25rem !important;
        min-width: 0 !important;
        flex: 1 1 0% !important;
        overflow: hidden !important;
    }
    nav .flex.items-center.gap-3 img {
        width: 1.5rem !important;
        height: 1.5rem !important;
    }
    nav .flex.items-center.gap-3 span {
        font-size: 0.7rem !important;
        line-height: 1.1 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        max-width: calc(100vw - 100px) !important;
    }
    nav .flex.items-center.gap-4 {
        gap: 0.25rem !important;
        flex-shrink: 0 !important;
    }
    nav .hamburger {
        padding: 0.3rem !important;
        min-width: 32px !important;
        height: 32px !important;
        font-size: 0.8rem !important;
        margin-left: 0.25rem !important;
        flex-shrink: 0 !important;
    }
    nav .hamburger i {
        font-size: 0.7rem !important;
    }
}

/* Small Devices (large phones, landscape, 481px-768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .slide-number-display {
        font-size: 0.8rem !important;
        padding: 0.4rem 0.6rem !important;
        width: 85% !important;
        max-width: 300px !important;
        border-radius: 12px !important;
    }
    .nav-btn {
        width: 80px !important;
        padding: 0.4rem !important;
        font-size: 0.9rem !important;
    }
    .slide-navigator-content {
        margin: 8px;
        max-width: calc(100vw - 16px);
    }
    .slide-container-wrapper {
        width: 100% !important;
        padding: 0 1rem !important;
    }
    .slide {
        width: 90% !important;
        max-width: 700px !important;
        padding: 2rem 1.5rem 5rem 1.5rem !important;
        border-radius: 0.5rem !important;
    }
}

/* Large Screen Layout Constraints */
@media (min-width: 769px) {
    html, body {
        overflow: hidden !important;
        height: 100vh !important;
    }
    .layout {
        overflow: hidden !important;
        height: calc(100vh - 100px) !important;
    }
    .sidebar {
        overflow-y: auto !important;
        height: 100% !important;
    }
    .main-content {
        overflow-y: hidden !important;
        height: 100% !important;
    }
    .slide-container-wrapper {
        overflow: hidden !important;
        height: 100% !important;
    }
    .slide {
        overflow-y: auto !important;
        max-height: calc(100vh - 214px) !important;
    }
}

/* Medium Devices (tablets, small laptops, 769px-1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .slide-number-display {
        font-size: 1rem;
        padding: 0.7rem 1.2rem;
        border-radius: 25px;
        width: auto;
        max-width: none;
        margin: 0 auto 1rem auto;
        gap: 0.6rem;
    }
    .slide-navigator-content {
        max-width: 700px;
    }
    .slide-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

/* Large Devices (desktops, 1025px-1440px) */
@media (min-width: 1025px) and (max-width: 1440px) {
    .slide-number-display {
        font-size: 1.1rem;
        padding: 0.8rem 1.3rem;
        border-radius: 30px;
        gap: 0.75rem;
    }
    .slide-navigator-content {
        max-width: 800px;
    }
}

/* Extra Large Devices (large desktops, 1441px and up) */
@media (min-width: 1441px) {
    .slide-number-display {
        font-size: 1.2rem;
        padding: 0.9rem 1.4rem;
        border-radius: 35px;
        gap: 0.8rem;
    }
    .slide-navigator-content {
        max-width: 900px;
    }
    .slide-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

/* AI demo modal and small animations */
.hidden { display: none !important; }
.fade-in { animation: fadeIn 300ms ease-out both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.nav-btn:active { transform: translateY(1px) scale(0.998); }
.ai-highlight { border-left: 4px solid #49A078; padding-left: 0.75rem; }

/* Button styling like index */
button {
    background: #3e8865;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    transition: all 0.3s;
    cursor: pointer;
}
button:hover {
    background: #facc15;
    color: #256d4f;
    transform: scale(1.1);
}

/* Footer link styling like index */
.footer-link {
    color: #49A078;
    border: 1px solid rgba(73, 160, 120, 0.3);
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    transition: color 0.3s, transform 0.3s;
}
.footer-link:hover, .footer-link:focus {
    color: #facc15;
    transform: scale(1.2);
    box-shadow: 0 4px 8px rgba(250,204,21,0.3);
}

/* Nav link styling like buttons */
.nav-link {
    background: #3e8865;
    color: white;
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    transition: all 0.3s;
    text-decoration: none;
}
.nav-link:hover {
    background: #facc15;
    color: #256d4f;
}