/* assets/css/style.css */
:root {
    --primary: #4361ee;
    --primary-dark: #3a0ca3;
    --secondary: #4cc9f0;
    --success: #06d6a0;
    --warning: #f8961e;
    --danger: #ef476f;
    --dark: #1a1a2e;
    --light: #f8f9fa;
    --gray: #6c757d;
    --gradient-primary: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
    --gradient-secondary: linear-gradient(135deg, #4cc9f0 0%, #4361ee 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 35px -10px rgba(0,0,0,0.15);
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Segoe UI', 'Tahoma', 'Cairo', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #eef2f7 100%);
    min-height: 100vh;
    color: var(--dark);
}

/* تخصيص شريط التمرير */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* أنماط البطاقات الحديثة */
.modern-card {
    background: white;
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.modern-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.modern-card .card-header {
    background: transparent;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.modern-card .card-body {
    padding: 1.5rem;
}

/* أنماط الأزرار الحديثة */
.btn-modern {
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-modern:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary-modern {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

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

.btn-outline-modern:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* أنماط حقول الإدخال */
.input-modern {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    background: white;
}

.input-modern:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.1);
    outline: none;
}

/* شريط التنقل الجانبي الحديث */
.sidebar-modern {
    background: var(--gradient-primary);
    min-height: 100vh;
    color: white;
    position: fixed;
    width: 280px;
    transition: var(--transition);
    z-index: 1000;
}

.sidebar-modern.collapsed {
    width: 80px;
}

.sidebar-modern .logo {
    padding: 1.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-modern .logo h3 {
    font-size: 1.3rem;
    font-weight: 700;
}

.sidebar-modern .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 0.9rem 1.5rem;
    margin: 0.25rem 0;
    transition: var(--transition);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-modern .nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
    transform: translateX(-5px);
}

.sidebar-modern .nav-link.active {
    background: rgba(255,255,255,0.2);
    color: white;
}

.sidebar-modern .nav-link i {
    width: 24px;
    font-size: 1.2rem;
}

/* المحتوى الرئيسي */
.main-content-modern {
    margin-right: 280px;
    padding: 2rem;
    transition: var(--transition);
}

.main-content-modern.full {
    margin-right: 80px;
}

/* بطاقات الإحصائيات */
.stat-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 1rem;
}

.stat-label {
    color: var(--gray);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

/* أنماط التحيات */
.welcome-banner {
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    color: white;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '✨';
    position: absolute;
    bottom: -20px;
    right: -20px;
    font-size: 120px;
    opacity: 0.1;
}

/* أنماط الجداول */
.table-modern {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table-modern thead {
    background: var(--gradient-primary);
    color: white;
}

.table-modern th {
    padding: 1rem;
    font-weight: 500;
}

.table-modern td {
    padding: 1rem;
    vertical-align: middle;
}

/* أنماط الإشعارات */
.notification-item {
    padding: 1rem;
    border-bottom: 1px solid #e9ecef;
    transition: var(--transition);
    cursor: pointer;
}

.notification-item:hover {
    background: #f8f9fa;
    transform: translateX(-5px);
}

.notification-item.unread {
    background: rgba(67, 97, 238, 0.05);
    border-right: 3px solid var(--primary);
}

/* أنماط متجاوبة */
@media (max-width: 992px) {
    .sidebar-modern {
        transform: translateX(100%);
        position: fixed;
        z-index: 1050;
    }
    
    .sidebar-modern.show {
        transform: translateX(0);
    }
    
    .main-content-modern {
        margin-right: 0;
    }
    
    .sidebar-modern.collapsed {
        width: 280px;
        transform: translateX(100%);
    }
    
    .sidebar-modern.collapsed.show {
        transform: translateX(0);
    }
}

/* أنيمشنات */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out;
}

/* شريط التحميل */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #e9ecef;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}