/* General Styles */
:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #2481cc;
    --tg-theme-button-color: #2481cc;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;

    /* Custom Variables */
    --primary-color: #3498db;
    --background-color: var(--tg-theme-bg-color, #f0f2f5);
    --text-color: var(--tg-theme-text-color, #333);
    --card-bg-color: var(--tg-theme-secondary-bg-color, #ffffff);
    --loader-color: var(--primary-color);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    padding: 10px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: var(--card-bg-color);
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.welcome-message {
    font-size: 1.1em;
    font-weight: 500;
}
.header-button {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 15px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9em;
}

/* Post Grid */
.post-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.post-card {
    background-color: var(--card-bg-color);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.2s ease-in-out;
}
.post-card:hover {
    transform: translateY(-3px);
}
.post-card .poster-wrapper {
    position: relative;
    padding-bottom: 140%; /* Aspect ratio for posters */
}
.post-card .poster {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.post-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding: 8px;
}
.view-count {
    position: absolute;
    top: 5px;
    left: 5px;
    background-color: rgba(0,0,0,0.6);
    color: white;
    font-size: 0.75em;
    padding: 3px 6px;
    border-radius: 4px;
}
.lock-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background-image: url('assets/images/lock_icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.8;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 25px;
    padding: 10px 0;
}
.pagination-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 15px;
    margin: 0 5px;
    border-radius: 8px;
    cursor: pointer;
}
.pagination-button:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}
.page-numbers {
    display: flex;
    gap: 5px;
}
.page-numbers span {
    padding: 8px 12px;
}
.page-numbers span.current-page {
    font-weight: bold;
    color: var(--primary-color);
}

/* Loader and Messages */
.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--loader-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 50px auto;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.message-container {
    text-align: center;
    margin-top: 50px;
    color: var(--tg-theme-hint-color, #888);
}

/* Details Page */
.video-container {
    position: relative;
    width: 100%;
    background-color: #000;
    margin-bottom: 15px;
}
.video-player {
    width: 100%;
    height: auto;
    display: block;
}
.details-header {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 20px;
}

/* Ad Confirmation Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-content {
    background-color: var(--card-bg-color);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    width: 85%;
    max-width: 350px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
.modal-content h3 {
    margin-top: 0;
    margin-bottom: 15px;
}
.modal-content p {
    margin-bottom: 25px;
    color: var(--tg-theme-hint-color);
}
.modal-buttons {
    display: flex;
    gap: 10px;
}
.modal-button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
}
.confirm-btn {
    background-color: var(--primary-color);
    color: white;
}
.cancel-btn {
    background-color: #e0e0e0;
    color: #333;
}