* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --error-color: #f56565;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --font-primary: 'Cairo', 'Segoe UI', sans-serif;
}

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    min-height: 100vh;
    direction: rtl;
    line-height: 1.6;
    color: var(--text-primary);
}

.app-container {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* الرأس */
.header {
    background: var(--surface-color);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* أزرار التنقل */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-secondary {
    background: var(--background-color);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

/* شريط التنقل */
.quick-nav {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--surface-color);
    border-bottom: 1px solid #e2e8f0;
    overflow-x: auto;
    scrollbar-width: none;
}

.quick-nav::-webkit-scrollbar {
    display: none;
}

.nav-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    background: var(--background-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-weight: 600;
    border-left: 4px solid transparent;
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-left-color: var(--primary-color);
}

/* منطقة الدردشة */
.chat-container {
    flex: 1;
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 1rem;
    gap: 1rem;
}

.chat-area {
    flex: 1;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.messages-container {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* الرسائل */
.message {
    max-width: 80%;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    position: relative;
    animation: messageAppear 0.3s ease;
}

.message.own {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.message.other {
    align-self: flex-start;
    background: var(--background-color);
    color: var(--text-primary);
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* إدخال الرسائل */
.message-input-area {
    padding: 1rem;
    background: var(--background-color);
    border-top: 1px solid #e2e8f0;
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.message-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    min-height: 50px;
    max-height: 120px;
}

.send-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
}

/* تنقل الجوال */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    padding: 0.5rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.mobile-nav-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: var(--background-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    margin: 0 0.25rem;
    font-size: 0.8rem;
}

/* تنسيقات بيانات المستخدم */
.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.welcome-text {
    color: var(--text-primary);
    font-weight: 600;
}

.user-panel {
    width: 280px;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 1rem;
}

.user-card {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.user-meta {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* تنسيقات أسماء الغرف */
.room-icon {
    margin-left: 0.5rem;
    font-size: 1.1em;
}

.room-icon-large {
    font-size: 2rem;
    margin-left: 1rem;
}

/* تنسيقات معلومات الغرفة */
.room-info {
    background: var(--background-color);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    margin-top: 1rem;
}

.room-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.room-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.room-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.room-stats {
    display: flex;
    gap: 1rem;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* تنسيقات رأس الشات */
.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--surface-color);
    border-bottom: 1px solid #e2e8f0;
}

.room-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.room-title h2 {
    margin: 0;
    color: var(--text-primary);
}

.room-subtitle {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* تنسيقات المستخدمين النشطين */
.active-users {
    margin-top: 1rem;
}

.active-users h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.users-list {
    max-height: 200px;
    overflow-y: auto;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background 0.3s ease;
    margin-bottom: 0.25rem;
}

.user-item:hover {
    background: var(--background-color);
}

.user-avatar-mini {
    font-size: 0.9rem;
}

.user-name {
    flex: 1;
    font-size: 0.9rem;
}

.start-chat-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.start-chat-btn:hover {
    opacity: 1;
}

/* تنسيقات إضافية لصفحة التسجيل */
.register-container .form-group input:invalid {
    border-color: var(--error-color);
}

.register-container .form-group input:valid {
    border-color: var(--success-color);
}

.recaptcha-branding {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.cleanup-notification .notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.cleanup-notification button {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
}

/* تنسيقات لرسائل الأخطاء والنجاح */
.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
}

.flash-message {
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease;
}

.flash-message.success {
    background: var(--success-color);
    color: white;
}

.flash-message.error {
    background: var(--error-color);
    color: white;
}

.flash-message.warning {
    background: var(--warning-color);
    color: white;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* تنسيقات للعمر والجنس في التسجيل */
.age-gender-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.gender-options {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.gender-option {
    flex: 1;
    text-align: center;
}

.gender-option input[type="radio"] {
    display: none;
}

.gender-option label {
    display: block;
    padding: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.gender-option input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #f0f4ff, #f8f0ff);
    color: var(--primary-color);
    font-weight: 600;
}

/* تحديث تخطيط الشات ليشمل لوحة المستخدم */
@media (min-width: 769px) {
    .chat-container {
        display: grid;
        grid-template-columns: 280px 1fr;
        gap: 1rem;
    }
    
    .user-panel {
        order: 1;
    }
    
    .chat-area {
        order: 2;
    }
}

@media (max-width: 768px) {
    .quick-nav {
        display: none;
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .chat-container {
        padding: 0;
    }
    
    .chat-area {
        border-radius: 0;
        min-height: calc(100vh - 120px);
    }
    
    .message {
        max-width: 90%;
        padding: 0.6rem 0.8rem;
    }
    
    .message-input-area {
        padding: 0.75rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .send-btn {
        width: 100%;
        justify-content: center;
    }
    
    .private-chats-panel {
        width: 100%;
        left: -100%;
    }
    
    .header {
        padding: 0.75rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .user-panel {
        display: none;
    }
    
    .user-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .welcome-text {
        font-size: 0.9rem;
    }
    
    .chat-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .room-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .private-message {
        max-width: 85%;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .age-gender-group {
        grid-template-columns: 1fr;
    }
    
    .flash-messages {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .message {
        max-width: 95%;
    }
    
    .mobile-nav-btn {
        font-size: 0.7rem;
        padding: 0.6rem;
    }
}

/* تحسينات لللمس */
@media (pointer: coarse) {
    .btn, .nav-btn, .mobile-nav-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .message-input {
        font-size: 16px;
    }
}

/* تحسينات للأجهزة ذات الشاشات الصغيرة */
@media (max-height: 600px) {
    .chat-area {
        min-height: calc(100vh - 100px);
    }
    
    .messages-container {
        padding: 0.5rem;
    }
}

/* تحسينات للرسائل الترحيبية */
.welcome-message {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f0f4ff, #f8f0ff);
    border-radius: var(--border-radius);
    margin: 1rem;
}

.welcome-message h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}