/* Slideshow Common Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Aptos, 'Segoe UI', sans-serif;
    background: #1a1a1a;
    overflow: hidden;
}

.slideshow-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide {
    display: none;
    width: 100vw;
    height: 100vh;
    background: white;
    animation: fadeIn 0.5s ease-in-out;
}

.slide.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.98);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Navigation controls */
.nav-controls {
    position: fixed;
    bottom: 15px;
    right: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.6);
    padding: 6px 15px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.nav-button {
    background: #1E64C8;
    color: white;
    border: none;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.nav-button:hover {
    background: #2874d8;
    transform: scale(1.1);
}

.nav-button:active {
    transform: scale(0.95);
}

.nav-button:disabled {
    background: #555;
    cursor: not-allowed;
    opacity: 0.5;
}

.slide-counter {
    color: white;
    font-size: 12px;
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}

/* Progress bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.progress-fill {
    height: 100%;
    background: #1E64C8;
    transition: width 0.3s ease;
}

/* Keyboard hint */
.keyboard-hint {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    animation: fadeOut 3s ease-in-out forwards;
    z-index: 1000;
}

@keyframes fadeOut {
    0%, 70% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        pointer-events: none;
    }
}

.key {
    display: inline-block;
    background: #333;
    padding: 4px 8px;
    border-radius: 4px;
    margin: 0 4px;
    font-family: monospace;
    border: 1px solid #555;
}

/* Slide title overlay */
.slide-title {
    position: fixed;
    top: 20px;
    left: 130px;
    background: rgba(30, 100, 200, 0.9);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    max-width: 600px;
    z-index: 1000;
}

/* Slide list (menu) */
.slide-list {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 10px;
    max-height: 80vh;
    overflow-y: auto;
    display: none;
    z-index: 999;
}

.slide-list.active {
    display: block;
}

.slide-list-item {
    color: white;
    padding: 8px 12px;
    margin: 5px 0;
    cursor: pointer;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.slide-list-item:hover {
    background: rgba(30, 100, 200, 0.5);
}

.slide-list-item.current {
    background: #1E64C8;
    font-weight: 600;
}

/* Top buttons */
.menu-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    z-index: 1000;
    transition: all 0.3s ease;
}

.menu-btn:hover {
    background: #1E64C8;
}

.fullscreen-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    z-index: 1000;
    transition: all 0.3s ease;
}

.fullscreen-btn:hover {
    background: #1E64C8;
}