:root {
    --primary-color: #2C0D0D;
    --secondary-color: #48312a;
    --tertiary-color: #645547;
    --quaternary-color: #807964;
    --quinary-color: #9c9d81;
    --senary-color: #b8c19e;
    --septenary-color: #d4e5bb;
    --octonary-color: #f0ffd8;
    --nonary-color: #fffff5;
    --denary-color: #FFFFFF;
}

body {
    font-family: 'Kalnia', Kalnia, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--primary-color);
    color: var(--quaternary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

h1, h2 {
    color: var(--nonary-color);
    text-align: center;
    margin-bottom: 1.2rem;
}

.search-container {
    display: flex;
    margin-bottom: 1.2rem;
    align-items: center;
    padding: 0.7rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 15px;
    background-color: var(--secondary-color);
}

#search-input {
    flex-grow: 1;
    font-size: 16px;
    border-radius: 6px 0 0 6px;
    background-color: var(--senary-color);
    color: var(--primary-color);
    height: 39px;
    padding: 0.5rem;
    border: none;
}

#search-button {
    background-color: var(--tertiary-color);
    color: var(--primary-color);
    border: none;
    cursor: pointer;
    border-radius: 0 6px 6px 0;
    transition: background-color 0.3s, color 0.3s;
    background-image: url('/static/image/search.png');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 1.5rem;
    height: 40px;
    width: 40px;
}

#search-button:hover {
    background-color: var(--quinary-color);
}

.view-toggle {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1.2rem;
}

.view-toggle button {
    background-color: var(--tertiary-color);
    border: 1px solid var(--senary-color);
    color: var(--tertiary-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 1.5rem;
    width: 40px;
    height: 40px;
}

#grid-view-btn {
    background-image: url('/static/image/grid.png');
}

#list-view-btn {
    background-image: url('/static/image/list.png');
}

.view-toggle button:first-child {
    border-radius: 4px 0 0 4px;
}

.view-toggle button:last-child {
    border-radius: 0 4px 4px 0;
}

.view-toggle button.active {
    background-color: var(--senary-color);
    color: var(--primary-color);
}

#file-structure {
    background-color: var(--secondary-color);
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 1rem;
    gap: 1rem;
    color: var(--denary-color);
    margin-top: 1rem;
    overflow-y: auto;
}

#file-structure.grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

#file-structure.list-view {
    display: flex;
    flex-direction: column;
}

.grid-item img, .list-item img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

.grid-item {
    position: relative;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    background-color: var(--senary-color);
    align-items: center;
    text-align: center;
}

.list-item {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 1rem;
    border-radius: 10px;
    gap: 1rem;
    background-color: var(--senary-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.download-button {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 1.8rem;
    height: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.55);
    color: var(--nonary-color);
    text-decoration: none;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

.download-button:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.list-item .download-button {
    position: static;
    margin-left: auto;
}

.grid-item:hover, .list-item:hover {
    background-color: var(--quinary-color);
    transform: translateY(-5px);
}

.grid-item span, .list-item span {
    word-break: break-word;
    max-width: 100%;
    color: var(--tertiary-color);
    margin-top: 0.5rem;
}

.folder-content {
    display: none;
    background-color: var(--primary-color);
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1.2rem;
}

.folder-content.active {
    display: block;
}

.grid-view .folder-content.active {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

#loading-indicator {
    text-align: center;
    font-size: 18px;
    color: var(--tertiary-color);
    padding: 2rem;
}

.back-link {
    display: inline-block;
    color: var(--octonary-color);
    text-decoration: none;
    background-color: var(--quaternary-color);
    border-radius: 10px;
    padding: 0.8rem 1.2rem;
    cursor: pointer;
    margin-left: 1rem;
    transition: background-color 0.3s, color 0.3s;
}

.back-link:hover {
    background-color: var(--denary-color);
}

.back-link img {
    vertical-align: middle;
    margin-right: 0.8rem;
}

.video-player-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    background-color: #000;
    border-radius: 10px;
    overflow: hidden;
}

#video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-controls {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 10px;
    border-radius: 5px;
}

.video-controls button {
    background-color: transparent;
    border: none;
    color: var(--denary-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s;
}

.video-controls button:hover {
    color: var(--quinary-color);
}

.related-videos-container {
    margin-top: 2rem;
}

.related-videos-container h2 {
    color: var(--nonary-color);
    margin-bottom: 1rem;
}

#related-videos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.related-video-item {
    position: relative;
    cursor: pointer;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
}

.related-video-item:hover {
    transform: scale(1.05);
}

.related-video-item img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.related-video-item span {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--denary-color);
    padding: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.back-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--octonary-color);
    text-decoration: none;
    background-color: var(--quaternary-color);
    border-radius: 10px;
    padding: 0.8rem 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

.back-link:hover {
    background-color: var(--denary-color);
}

#navigation-buttons {
    display: inline-flex;
    cursor: pointer;
    border-radius: 10px;
    gap: 0.8rem;
    transition: background-color 0.3s;
    background-color: unset;
    flex-direction: column;
    max-height: -webkit-fill-available;
}

#back-button, #home-button {
    display: inline-flex;
    align-items: center;
    color: var(--tertiary-color);
    text-decoration: none;
    height: -webkit-fill-available;
    background-color: var(--senary-color);
    border-radius: 10px;
    padding: 0.8rem 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

#back-button:hover, #home-button:hover {
    background-color: var(--quinary-color);
    transform: translateY(-5px);
}

#back-button img, #home-button img {
    vertical-align: middle;
    margin-right: 0.8rem;
    width: 20px;
    height: 20px;
}

.custom-controls {
    display: flex;
    margin: 1rem 0;
    justify-content: center;
    align-items: center;
}

.custom-controls button {
    background-color: var(--senary-color);
    border: 1px solid var(--tertiary-color);
    color: var(--secondary-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    padding: 0.5rem 1rem;
    margin: 0 0.5rem;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
}

.custom-controls button:hover {
    background-color: var(--quinary-color);
}

.head {
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0.5rem;
    }

    h1, h2 {
        font-size: 1.5rem;
    }

    .search-container {
        flex-direction: column;
        gap: 0.5rem;
    }

    #search-input {
        width: 100%;
        border-radius: 6px;
    }

    #search-button {
        width: 100%;
        border-radius: 6px;
    }

    .view-toggle {
        justify-content: center;
    }

    #file-structure.grid-view {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    #related-videos {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .grid-item, .list-item {
        padding: 0.5rem;
    }

    .grid-item span, .list-item span {
        font-size: 0.9rem;
    }

    .video-player-container {
        padding: 0.5rem;
    }

    .video-controls {
        bottom: 5px;
        padding: 5px;
    }

    .video-controls button {
        font-size: 1.2rem;
    }

    #related-videos {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .back-link {
        padding: 0.5rem 1rem;
    }

    .custom-controls {
        flex-direction: column;
        gap: 0.5rem;
    }

    .custom-controls button {
        width: 100%;
        margin: 0.25rem 0;
    }
}

@media (max-width: 480px) {
    h1, h2 {
        font-size: 1.2rem;
    }

    #file-structure.grid-view {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

    .grid-item, .list-item {
        padding: 0.25rem;
    }

    .grid-item span, .list-item span {
        font-size: 0.8rem;
    }

    .video-controls button {
        font-size: 1rem;
    }

    #related-videos {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .back-link {
        padding: 0.5rem 1rem;
    }

    #back-button, #home-button {
        padding: 0.5rem 1rem;
    }
}

.login-container {
    max-width: 360px;
    margin: 10vh auto 0;
    padding: 2rem;
    text-align: center;
    background-color: var(--secondary-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.login-logo {
    max-width: 50%;
    height: auto;
    margin-bottom: 1.5rem;
}

.login-error {
    color: #e07a5f;
    margin-bottom: 1rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.login-form input {
    padding: 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--tertiary-color);
    background-color: var(--nonary-color);
    font-family: inherit;
}

.login-form button {
    padding: 0.6rem;
    border-radius: 4px;
    border: none;
    background-color: var(--senary-color);
    color: var(--primary-color);
    font-family: inherit;
    cursor: pointer;
}

.login-form button:hover {
    background-color: var(--septenary-color);
}