/**
 * التصميم المتجاوب
 * Responsive Design
 */

/* ========== الأجهزة اللوحية ========== */
@media (max-width: 992px) {
    .rooms-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .chat-sidebar {
        position: fixed;
        top: var(--navbar-height);
        left: -280px;
        height: calc(100vh - var(--navbar-height));
        z-index: 1200;
        transition: var(--transition);
    }
    
    .chat-sidebar.active {
        left: 0;
    }
    
    .sidebar-toggle-btn {
        display: block;
    }
    
    .show-participants-btn {
        display: flex;
        position: fixed;
        bottom: 100px;
        left: 20px;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        background-color: var(--primary-color);
        color: white;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        box-shadow: var(--shadow-md);
        z-index: 100;
    }
    
    .message-content {
        max-width: 80%;
    }
}

/* ========== الهواتف ========== */
@media (max-width: 768px) {
    :root {
        --navbar-height: 55px;
    }
    
    .navbar-container {
        padding: 0 15px;
    }
    
    .navbar-brand h2 {
        font-size: 20px;
    }
    
    .navbar-icons {
        gap: 12px;
    }
    
    .nav-icon {
        font-size: 18px;
    }
    
    .nav-profile span {
        display: none;
    }
    
    .nav-profile img {
        width: 35px;
        height: 35px;
    }
    
    .sidebar {
        width: 250px;
        right: -250px;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .page-header h1 {
        font-size: 26px;
    }
    
    .rooms-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .room-card {
        padding: 20px;
    }
    
    .auth-box {
        padding: 30px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .chat-container {
        height: calc(100vh - var(--navbar-height));
        flex-direction: column;
        gap: 0;
    }
    
    .chat-room {
        border-radius: 0;
    }
    
    .chat-header {
        padding: 12px 15px;
    }
    
    .chat-header h2 {
        font-size: 18px;
    }
    
    .chat-messages {
        padding: 15px;
    }
    
    .chat-message {
        gap: 10px;
    }
    
    .message-avatar img {
        width: 35px;
        height: 35px;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .message-bubble {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .chat-input-container {
        padding: 12px 15px;
    }
    
    .chat-form textarea {
        font-size: 14px;
        padding: 10px 15px;
    }
    
    .send-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .notifications-dropdown {
        width: calc(100% - 40px);
        left: 20px;
        right: 20px;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
        margin: 10% auto;
    }
}

/* ========== الهواتف الصغيرة ========== */
@media (max-width: 480px) {
    .navbar-brand h2 {
        font-size: 18px;
    }
    
    .navbar-icons {
        gap: 8px;
    }
    
    .nav-icon {
        font-size: 16px;
        padding: 5px;
    }
    
    .page-header h1 {
        font-size: 22px;
    }
    
    .room-card {
        padding: 15px;
    }
    
    .room-header h3 {
        font-size: 18px;
    }
    
    .auth-box {
        padding: 25px 15px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .message-header {
        font-size: 13px;
    }
    
    .message-bubble {
        font-size: 13px;
    }
}