/* Slide Layouts */
.slide {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    /* Hidden by default for animation */
    display: none;
    /* Hidden by default */
}

.slide.active {
    display: flex;
    opacity: 1;
}

/* Title Slide */
.slide-title {
    text-align: center;
    background: linear-gradient(135deg, var(--color-fll-blue), var(--color-fll-red));
    color: white;
    border-radius: 20px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

.slide-title h1 {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

.slide-title .icon {
    font-size: 5rem;
    margin-bottom: var(--space-lg);
    display: block;
}

/* Content Slide */
.slide-content-layout {
    display: grid;
    gap: var(--space-xl);
    align-items: center;
}

.text-only {
    grid-template-columns: 1fr;
    max-width: 800px;
    margin: 0 auto;
}

.text-left-image-right {
    grid-template-columns: 1fr 1fr;
}

.text-right-image-left {
    grid-template-columns: 1fr 1fr;
    direction: rtl;
    /* Swap columns */
}

.text-right-image-left>* {
    direction: ltr;
    /* Reset text direction */
}

.slide-image {
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    max-height: 60vh;
    object-fit: contain;
    width: 100%;
}

/* Keypoints Slide */
.keypoints-list {
    list-style: none;
    margin-top: var(--space-lg);
}

.keypoints-list li {
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 1.2rem;
}

.keypoints-list li::before {
    content: "•";
    color: var(--color-fll-blue);
    font-size: 2rem;
    line-height: 1;
}

/* Checkpoint Slide */
.checkpoint-card {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: var(--space-xl);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    border: 2px solid var(--color-fll-yellow);
}

.checkpoint-question {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--color-fll-blue);
}

.checkpoint-hint {
    background-color: var(--color-light);
    padding: var(--space-md);
    border-radius: 8px;
    display: inline-block;
    cursor: pointer;
}

.checkpoint-answer {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background-color: #E8F6F3;
    border-radius: 8px;
    display: none;
    /* Hidden initially */
}

.checkpoint-answer.visible {
    display: block;
    animation: fadeIn 0.5s ease;
}

/* Quiz Slide */
.quiz-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.quiz-frame {
    width: 100%;
    height: 60vh;
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    background-color: white;
}

/* Background Variants */
.bg-light {
    background-color: var(--color-bg);
    padding: var(--space-lg);
    border-radius: 12px;
}

.bg-highlight {
    background-color: #E8F6F3;
    /* Light Mint */
    padding: var(--space-lg);
    border-radius: 12px;
    border-left: 5px solid var(--color-create);
}

.bg-warning {
    background-color: #FFF3E0;
    /* Light Orange */
    padding: var(--space-lg);
    border-radius: 12px;
    border-left: 5px solid var(--color-fll-yellow);
}

.bg-success {
    background-color: #E8F5E9;
    /* Light Green */
    padding: var(--space-lg);
    border-radius: 12px;
    border-left: 5px solid #4CAF50;
}

.bg-gradient-red {
    background: var(--color-white);
    color: var(--color-identify);
}

.bg-gradient-teal {
    background: var(--color-white);
    color: var(--color-design);
}

.bg-gradient-mint {
    background: var(--color-white);
    color: var(--color-create);
}

.bg-gradient-coral {
    background: var(--color-white);
    color: var(--color-iterate);
}

.bg-gradient-purple {
    background: var(--color-white);
    color: var(--color-communicate);
}