body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #212529;
    color: #e9ecef;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.slideshow-container {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.slide {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease-in-out, visibility 0.6s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 30px;
    box-sizing: border-box;
    text-align: left;
}

.school-logo {
    position: absolute;
    top: 25px;
    left: 35px;
    max-height: 50px;
    width: auto;
    z-index: 2;
    opacity: 0.9;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.slide-content {
    background-color: #343a40;
    padding: 30px 50px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
    width: 92%;
    max-width: 1500px;
    max-height: 90vh;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.intro-slide-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100%;
}

.intro-slide-content h1 {
    font-size: 2.8em;
    margin-bottom: 40px;
    border-bottom: none;
    padding-bottom: 0;
}

.intro-slide-content .subtitle {
    font-size: 1.8em;
    color: #e9ecef;
    margin-bottom: 20px;
}

.intro-slide-content .school-info {
    font-size: 1.5em;
    color: #adb5bd;
    margin-bottom: 15px;
}

.intro-slide-content .date-info {
    font-size: 1.3em;
    color: #adb5bd;
}

.slide h1 {
    color: #c8102e;
    font-size: 2.4em;
    margin-top: 0;
    margin-bottom: 25px;
    border-bottom: 3px solid #495057;
    padding-bottom: 15px;
    width: 100%;
    box-sizing: border-box;
}

.content-wrapper {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    width: 100%;
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.text-content {
    flex: 2;
    min-width: 0;
}

.image-content {
    flex: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 5px;
    width: 100%;
    min-width: 0;
}

.image-placeholder-text {
    width: 100%;
    min-height: 250px;
    max-height: 60vh;
    background-color: #495057;
    border: 2px dashed #6c757d;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #adb5bd;
    font-style: italic;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}

.image-content img {
    max-width: 100%;
    max-height: 60vh;
    border-radius: 6px;
    border: 1px solid #565e64;
    object-fit: contain;
    background-color: #2a2e32;
}

.tool-logos-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px 35px;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 10px 0;
}

.tool-logos-grid img {
    max-height: 105px;
    max-width: 210px;
    object-fit: contain;
    background-color: transparent;
    border: none;
    filter: drop-shadow(0 3px 4px rgba(0,0,0,0.25));
}

.dual-image-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 20px;
    width: 100%;
    height: 100%;
}

.dual-image-container .image-pair {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 0;
}

.dual-image-container .image-pair img {
    max-width: 100%;
    max-height: 58vh;
    object-fit: contain;
    margin-bottom: 0;
    background-color: #2a2e32;
    border: 1px solid #565e64;
    border-radius: 6px;
}

.dual-image-container .image-pair .caption {
    display: none;
}

.slide ul {
    list-style: none;
    padding-left: 0;
    margin-top: 0;
}

.slide ul li {
    font-size: 1.15em;
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
    line-height: 1.5;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

.slide ul li::before {
    content: "▶";
    color: #c8102e;
    position: absolute;
    left: 0;
    font-size: 0.9em;
    top: 0.28em;
}

.slide ul ul {
    margin-top: 8px;
    margin-bottom: 8px;
}

.slide ul ul li {
    font-size: 0.9em;
}

.slide ul ul li::before {
    content: "▷";
    color: #6c757d;
    font-size: 0.85em;
}

.slide-number {
    position: absolute;
    bottom: 25px;
    right: 35px;
    font-size: 1.05em;
    color: #6c757d;
    z-index: 2;
}

.navigation {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.navigation button {
    background-color: #c8102e;
    color: white;
    border: none;
    padding: 12px 22px;
    margin: 0 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.05em;
    transition: background-color 0.3s;
}

.navigation button:hover {
    background-color: #e02b49;
}

.navigation button:disabled {
    background-color: #495057;
    cursor: not-allowed;
}

.slide ol {
    list-style-type: none;
    counter-reset: item;
    padding-left: 0;
}
.slide ol li {
    counter-increment: item;
    margin-bottom: 12px;
    font-size: 1.15em;
    padding-left: 40px;
    position: relative;
    line-height: 1.5;
    overflow-wrap: break-word;
    word-wrap: break-word;
}
.slide ol li::before {
    content: counter(item) ".";
    color: #c8102e;
    font-weight: bold;
    position: absolute;
    left: 0;
    width: 30px;
    text-align: right;
    margin-right: 10px;
}

.slide-content::-webkit-scrollbar {
    width: 12px;
}
.slide-content::-webkit-scrollbar-track {
    background: #30353a;
}
.slide-content::-webkit-scrollbar-thumb {
    background-color: #6c757d;
    border-radius: 6px;
    border: 3px solid #30353a;
}
.slide-content::-webkit-scrollbar-thumb:hover {
    background-color: #868e96;
}
.slide-content {
    scrollbar-width: auto;
    scrollbar-color: #6c757d #30353a;
}

.full-text-slide .content-wrapper {
    display: block;
    overflow-x: hidden;
}
.full-text-slide .text-content {
    flex: none;
    width: 100%;
}
.full-text-slide .image-content {
    display: none;
}

.flowchart-slide .content-wrapper {
    display: block; 
    flex-grow: 1; 
    display: flex; 
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.flowchart-slide .text-content {
    display: none; 
}

.flowchart-slide .image-content {
    flex: 1 1 auto; 
    width: 100%;
    height: 100%; 
    padding-top: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden; 
}

.flowchart-slide .image-content img.zoomable-flowchart {
    max-width: 100%;
    max-height: calc(88vh - 120px); 
    object-fit: contain;
    background-color: #2c3034;
    cursor: zoom-in;
    border: 1px solid #565e64;
    border-radius: 6px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-image-container {
    width: 95vw;
    height: 90vh;
    overflow: hidden;
    position: relative;
    border: 1px solid #444;
    background-color: #212529;
}

#zoomedImg {
    max-width: none;
    max-height: none;
    display: block;
    cursor: grab;
    transform-origin: 0 0; 
    transition: transform 0.1s ease-out;
    position: absolute; 
    left: 0px; 
    top: 0px; 
}

.modal-close-btn {
    position: absolute;
    top: 15px;
    right: 25px;
    color: #ccc;
    font-size: 45px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    line-height: 1;
}
.modal-close-btn:hover,
.modal-close-btn:focus {
    color: #fff;
}

.modal-controls {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(50,50,50,0.85);
    padding: 12px 15px;
    border-radius: 8px;
    z-index: 1001;
    display: flex;
    gap: 12px;
}

.modal-controls button {
    background-color: #c8102e;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: bold;
}
.modal-controls button:hover {
    background-color: #e02b49;
}


@media (max-width: 1024px) {
    .slide-content {
        width: 90%;
        max-width: 1200px;
        padding: 30px 40px;
    }
    .slide h1 {
        font-size: 2.2em;
    }
    .intro-slide-content h1 {
        font-size: 2.6em;
    }
    .intro-slide-content .subtitle {
        font-size: 1.6em;
    }
    .intro-slide-content .school-info {
        font-size: 1.3em;
    }
    .intro-slide-content .date-info {
        font-size: 1.1em;
    }
    .image-content img { 
        max-height: 55vh;
    }
    .dual-image-container .image-pair img {
        max-height: calc(55vh - 30px); 
    }
    .flowchart-slide .image-content img.zoomable-flowchart { 
         max-height: calc(85vh - 90px);
    }
    .tool-logos-grid img {
        max-height: 90px;
        max-width: 180px;
    }
     .slide ul li, .slide ol li {
        font-size: 1.1em;
    }
    .modal-image-container {
        width: 90vw;
        height: 85vh;
    }
    .modal-controls button {
        padding: 8px 15px;
        font-size: 1em;
    }
    .school-logo {
        max-height: 45px;
        top: 20px;
        left: 30px;
    }
}

@media (max-width: 768px) {
    .slide {
        padding: 15px;
    }
    .slide-content {
        width: 95%;
        padding: 25px 20px;
        max-height: 88vh;
    }
    .slide h1 {
        font-size: 1.9em;
        margin-bottom: 20px;
        padding-bottom: 12px;
    }
    .intro-slide-content h1 {
        font-size: 2.2em;
        margin-bottom: 25px;
    }
    .intro-slide-content .subtitle {
        font-size: 1.4em;
        margin-bottom: 15px;
    }
    .intro-slide-content .school-info {
        font-size: 1.2em;
        margin-bottom: 10px;
    }
    .intro-slide-content .date-info {
        font-size: 1em;
    }
    .content-wrapper {
        flex-direction: column;
        gap: 25px;
    }
    .text-content, .image-content {
        flex-basis: auto;
        width: 100%;
        flex: none;
    }
    .image-content {
        padding-top: 0;
        order: -1;
        max-height: none;
    }
    .image-content img { 
        max-height: 35vh;
    }
    .dual-image-container {
        gap: 10px;
    }
    .dual-image-container .image-pair img {
        max-height: 25vh; 
    }
    .flowchart-slide .image-content img.zoomable-flowchart {
         max-height: 60vh; 
         min-height: 200px;
    }
    .image-placeholder-text {
         max-height: 35vh;
         min-height: 180px;
    }
    .tool-logos-grid {
        gap: 20px;
        padding: 5px 0;
    }
    .tool-logos-grid img {
        max-height: 75px;
        max-width: 150px;
    }
    .slide ul li, .slide ol li {
        font-size: 1em;
        padding-left: 22px;
        margin-bottom: 10px;
    }
    .slide ul li::before {
        font-size: 0.85em;
        top: 0.25em;
    }
     .slide ul ul li {
        font-size: 0.9em;
    }
    .slide ol li {
        padding-left: 30px;
    }
    .slide ol li::before{
        width: 22px;
        font-size: 1em;
    }
    .navigation button {
        padding: 10px 15px;
        font-size: 0.95em;
        margin: 0 5px;
    }
    .slide-number {
        bottom: 15px;
        right: 15px;
        font-size: 0.9em;
    }
    .modal-image-container {
        width: 95vw;
        height: 80vh;
    }
    .modal-close-btn {
        top: 10px;
        right: 15px;
        font-size: 35px;
    }
    .modal-controls {
        bottom: 10px;
        padding: 8px 10px;
        gap: 8px;
    }
    .modal-controls button {
        padding: 8px 12px;
        font-size: 0.9em;
    }
    .school-logo {
        max-height: 40px;
        top: 15px;
        left: 15px;
    }
}

@media (max-width: 480px) {
    .slide {
        padding: 10px;
    }
    .slide-content {
        padding: 20px 15px;
        max-height: calc(100vh - 70px);
    }
    .slide h1 {
        font-size: 1.6em;
    }
    .intro-slide-content h1 {
        font-size: 1.8em;
    }
    .intro-slide-content .subtitle {
        font-size: 1.2em;
    }
    .intro-slide-content .school-info {
        font-size: 1.0em;
    }
    .intro-slide-content .date-info {
        font-size: 0.9em;
    }
    .slide ul li, .slide ol li {
        font-size: 0.9em;
        line-height: 1.4;
        margin-bottom: 7px;
    }
     .slide ul ul li {
        font-size: 0.85em;
    }
     .tool-logos-grid img {
        max-height: 60px;
        max-width: 100px;
    }
    .dual-image-container .image-pair img {
        max-height: calc(25vh - 20px);
    }
    .flowchart-slide .image-content img.zoomable-flowchart {
        max-height: 50vh;
    }
    .navigation {
        bottom: 10px;
    }
    .navigation button {
        padding: 8px 10px;
        font-size: 0.85em;
    }
    .slide-number {
        display: none;
    }
    .school-logo {
        max-height: 35px;
        top: 10px;
        left: 10px;
        opacity: 0.7;
    }
}