/* ============================================
   التصميم الاحترافي على طراز YouTube (الوضع الداكن)
   ============================================ */

   :root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #212121;
    --bg-hover: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --border-color: #303030;
    --accent-red: #cc0000;
    --accent-blue: #3ea6ff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    direction: rtl;
    padding-top: 60px;
}

a {
    color: var(--text-primary);
    text-decoration: none;
}

/* ===== الهيدر ===== */
.header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: 56px;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}
.header-left .material-icons {
    font-size: 28px;
    cursor: pointer;
    color: var(--text-primary);
}
.logo {
    font-size: 22px;
    font-weight: 700;
    color: #ff0000;
}
.logo span {
    color: var(--text-primary);
    font-weight: 400;
}

.header-center {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 600px;
    margin: 0 20px;
}
.header-center input {
    flex: 1;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 30px 0 0 30px;
    color: #fff;
    font-size: 16px;
    outline: none;
    height: 40px;
}
.header-center input:focus {
    border-color: var(--accent-blue);
}
.header-center button {
    height: 40px;
    width: 60px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 0 30px 30px 0;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.header-center button:hover {
    background: var(--bg-hover);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.header-right .material-icons {
    font-size: 26px;
    cursor: pointer;
    color: var(--text-primary);
}
.header-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
}
#parent_btn {
    color: var(--accent-red) !important;
}

/* ===== أزرار التصنيفات ===== */
.category_chips {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    padding: 12px 20px;
    overflow-x: auto;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 56px;
    z-index: 999;
}
.category_chips::-webkit-scrollbar {
    height: 0;
}

.category_chip {
    background: var(--bg-secondary);
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    color: var(--text-primary);
}
.category_chip:hover {
    background: var(--bg-hover);
}
.category_chip.active {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

/* ===== شبكة الفيديوهات ===== */
.videos_grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px 16px;
    padding: 24px 20px;
    max-width: 1800px;
    margin: 0 auto;
}

.video {
    cursor: pointer;
    transition: transform 0.15s ease;
}
.video:hover {
    transform: scale(1.01);
}

.thumnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}
.thumnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.2s;
}
.video:hover .thumnail img {
    filter: brightness(0.85);
}

.video_details {
    display: flex;
    gap: 12px;
    margin-top: 12px;
    padding: 0 4px;
}

.creator_img {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--bg-secondary);
}
.creator_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.title {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.video_title {
    font-weight: 600;
    font-size: 16px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}
.video_title:hover {
    color: var(--accent-blue);
}

.video_creator {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 2px;
}
.video_creator:hover {
    color: var(--text-primary);
}

.title span {
    font-size: 13px;
    color: var(--text-secondary);
}

.no_videos {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    width: 100%;
    padding: 40px 0;
}

/* ===== صفحة المشاهدة ===== */
.watch_container {
    display: flex;
    gap: 24px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

.main_video {
    flex: 1 1 65%;
    min-width: 0;
}

.video_player_box {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 16px;
}
.video_player_box iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.watch_title {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 12px;
}

.video_details_bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.channel_info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.channel_info img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}
.channel_info h3 {
    font-size: 18px;
    font-weight: 500;
}
.channel_info span {
    font-size: 14px;
    color: var(--text-secondary);
}

.subscribe_btn {
    background: var(--accent-red);
    color: #fff;
    border: none;
    padding: 8px 18px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}
.subscribe_btn:hover {
    background: #990000;
}

.video_actions {
    display: flex;
    gap: 10px;
}
.action_btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    padding: 8px 16px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}
.action_btn:hover {
    background: var(--bg-hover);
}
#like_btn {
    color: var(--accent-blue);
}

/* ===== المقترحات ===== */
.recommended_videos {
    flex: 1 1 30%;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.side_video {
    display: flex;
    gap: 10px;
    padding: 6px;
    border-radius: 10px;
    transition: background 0.2s;
    cursor: pointer;
}
.side_video:hover {
    background: var(--bg-hover);
}

.side_video a {
    flex-shrink: 0;
    width: 168px;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    overflow: hidden;
}
.side_video img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.side_video_info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.side_video_info a {
    font-weight: 600;
    font-size: 15px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.side_video_info p {
    font-size: 13px;
    color: var(--text-secondary);
}
.side_video_info span {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== شاشة القفل ===== */
.parent_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.overlay_card {
    background: var(--bg-secondary);
    padding: 40px 30px;
    border-radius: 24px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.overlay_card i {
    font-size: 60px;
    color: var(--accent-red);
    margin-bottom: 16px;
}
.overlay_card h2 {
    font-size: 24px;
    margin-bottom: 8px;
}
.overlay_card p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 24px;
}

.pin_box {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.pin_box input {
    padding: 12px 16px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: #fff;
    font-size: 16px;
    text-align: center;
    outline: none;
}
.pin_box input:focus {
    border-color: var(--accent-blue);
}
.pin_box button {
    background: var(--accent-red);
    color: #fff;
    border: none;
    padding: 12px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s;
}
.pin_box button:hover {
    background: #990000;
}

/* ===== استجابة ===== */
@media (max-width: 1024px) {
    .watch_container {
        flex-direction: column;
    }
    .recommended_videos {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .side_video {
        flex: 1 1 45%;
        min-width: 200px;
    }
}

@media (max-width: 600px) {
    .videos_grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px 10px;
        padding: 12px;
    }
    .header-center {
        display: none;
    }
    .watch_title {
        font-size: 18px;
    }
    .video_details_bar {
        flex-direction: column;
        align-items: stretch;
    }
    .video_actions {
        justify-content: space-around;
    }
    .side_video a {
        width: 120px;
    }
    .overlay_card {
        padding: 24px 16px;
    }
}

@media (max-width: 450px) {
    .videos_grid {
        grid-template-columns: 1fr;
    }
}