/* 
 * StudyAI Professional Demo Player Styles 
 * YouTube-inspired premium aesthetic
 */

.demo-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.demo-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.demo-player-container {
    width: 95%;
    max-width: 1100px;
    background: #000;
    border-radius: 2rem;
    overflow: hidden;
    position: relative;
    box-shadow: 0 50px 100px -20px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: scale(0.95);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.demo-modal-overlay.active .demo-player-container {
    transform: scale(1);
}

.demo-video-wrapper {
    aspect-ratio: 16 / 9;
    width: 100%;
    background: #000;
    position: relative;
}

.demo-video-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.demo-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.9), transparent);
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.demo-player-container:hover .demo-controls {
    opacity: 1;
    transform: translateY(0);
}

.demo-progress-container {
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    position: relative;
    cursor: pointer;
}

.demo-progress-bar {
    height: 100%;
    background: #6366f1;
    border-radius: 2px;
    width: 0%;
    position: relative;
}

.demo-progress-bar::after {
    content: '';
    position: absolute;
    right: -6px;
    top: -4px;
    width: 12px;
    height: 12px;
    background: #6366f1;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    opacity: 0;
    transition: opacity 0.2s;
}

.demo-progress-container:hover .demo-progress-bar::after {
    opacity: 1;
}

.demo-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.demo-btn-group {
    display: flex;
    align-items: center;
    gap: 20px;
}

.demo-icon {
    color: #fff;
    font-size: 24px !important;
    cursor: pointer;
    opacity: 0.8;
    transition: all 0.3s;
}

.demo-icon:hover {
    opacity: 1;
    transform: scale(1.1);
}

.demo-title-area {
    display: flex;
    flex-direction: column;
    color: #fff;
}

.demo-title {
    font-size: 16px;
    font-weight: 700;
}

.demo-subtitle {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.demo-close-btn {
    position: absolute;
    top: 30px;
    right: 30px;
    color: #fff;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s;
    z-index: 10001;
}

.demo-close-btn:hover {
    background: #ef4444;
    border-color: #ef4444;
    transform: rotate(90deg);
}