/**
 * ⚡ SMOOTH TRANSITIONS & ANIMATIONS
 * تأثيرات الانتقال السلسة والحركات المتقدمة
 */

:root {
    --transition-duration: 0.15s;
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
    --fade-in-duration: 0.3s;
    --slide-duration: 0.4s;
}

/* تحسين الأداء على الأجهزة المحمولة */
@media (max-width: 768px) {
    :root {
        --transition-duration: 0.1s;
        --fade-in-duration: 0.2s;
        --slide-duration: 0.3s;
    }
}

/**
 * تأثير الانتقال الرئيسي (Fade In/Out)
 */
main, [role="main"], .page-content {
    transition: opacity var(--transition-duration) var(--transition-timing);
}

/**
 * تأثيرات الدخول (Entrance Animations)
 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/**
 * تطبيق تأثيرات الدخول على العناصر
 */
.fade-in-up {
    animation: fadeInUp var(--fade-in-duration) var(--transition-timing) forwards;
}

.fade-in-down {
    animation: fadeInDown var(--fade-in-duration) var(--transition-timing) forwards;
}

.fade-in-left {
    animation: fadeInLeft var(--fade-in-duration) var(--transition-timing) forwards;
}

.fade-in-right {
    animation: fadeInRight var(--fade-in-duration) var(--transition-timing) forwards;
}

.scale-in {
    animation: scaleIn var(--fade-in-duration) var(--transition-timing) forwards;
}

/**
 * تأثيرات الانتقال السلسة للعناصر
 */
.smooth-transition {
    transition: all var(--transition-duration) var(--transition-timing);
}

/* الروابط والأزرار */
a, button, input[type="button"], input[type="submit"] {
    transition: all 0.2s var(--transition-timing);
}

a:hover, button:hover {
    transform: translateY(-2px);
}

a:active, button:active {
    transform: translateY(0);
}

/**
 * تأثيرات الظلال والألوان
 */
.card, .service-card, .blog-card {
    transition: box-shadow 0.3s var(--transition-timing),
                transform 0.3s var(--transition-timing),
                border-color 0.3s var(--transition-timing);
}

.card:hover, .service-card:hover, .blog-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
}

/**
 * تأثيرات الصور — نُطبّق فقط على الصور اللي عليها data-fade
 * (بدلاً من كل الصور، لتجنب إخفائها)
 */
img[data-fade] {
    transition: opacity 0.3s var(--transition-timing),
                transform 0.3s var(--transition-timing);
}

img[data-fade].loaded {
    opacity: 1;
}

img[data-fade]:not(.loaded) {
    opacity: 0;
}

/**
 * تأثيرات النصوص
 */
h1, h2, h3, h4, h5, h6 {
    transition: color 0.3s var(--transition-timing),
                text-shadow 0.3s var(--transition-timing);
}

/**
 * تأثيرات الخلفيات
 */
.gradient-bg {
    background: linear-gradient(-45deg, #1B2A41, #2D3E52, #1B2A41, #2D3E52);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/**
 * تأثيرات التحميل
 */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 2s var(--transition-timing) infinite;
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.shimmer {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/**
 * تأثيرات الـ Scroll
 */
.scroll-fade {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--transition-timing),
                transform 0.6s var(--transition-timing);
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/**
 * تأثيرات الـ Stagger (تأخير متدرج)
 */
.stagger-item {
    animation: fadeInUp var(--fade-in-duration) var(--transition-timing) forwards;
    opacity: 0;
}

.stagger-item:nth-child(1) { animation-delay: 0s; }
.stagger-item:nth-child(2) { animation-delay: 0.05s; }
.stagger-item:nth-child(3) { animation-delay: 0.1s; }
.stagger-item:nth-child(4) { animation-delay: 0.15s; }
.stagger-item:nth-child(5) { animation-delay: 0.2s; }
.stagger-item:nth-child(n+6) { animation-delay: 0.25s; }

/**
 * تأثيرات الـ Hover
 */
.hover-lift {
    transition: transform 0.3s var(--transition-timing),
                box-shadow 0.3s var(--transition-timing);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.hover-scale {
    transition: transform 0.3s var(--transition-timing);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-glow {
    transition: box-shadow 0.3s var(--transition-timing),
                text-shadow 0.3s var(--transition-timing);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(201, 163, 94, 0.5);
    text-shadow: 0 0 10px rgba(201, 163, 94, 0.5);
}

/**
 * تأثيرات الـ Focus (للوصول)
 */
button:focus, a:focus, input:focus {
    outline: 2px solid #C9A35E;
    outline-offset: 2px;
    transition: outline 0.2s var(--transition-timing);
}

/**
 * تأثيرات الـ Loading Skeleton
 */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/**
 * تأثيرات الـ Modal/Dialog
 */
@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-enter {
    animation: modalSlideIn 0.3s var(--transition-timing);
}

/**
 * تأثيرات الـ Notification/Toast
 */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.toast-enter {
    animation: slideInRight 0.3s var(--transition-timing);
}

.toast-exit {
    animation: slideOutRight 0.3s var(--transition-timing);
}

/**
 * تحسين الأداء: استخدام will-change بحذر
 */
.high-performance {
    will-change: transform, opacity;
    backface-visibility: hidden;
    perspective: 1000px;
}

/**
 * تعطيل الحركات على الأجهزة ذات تفضيل تقليل الحركة
 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/**
 * تحسينات الأداء على الشاشات الصغيرة
 */
@media (max-width: 640px) {
    .card:hover, .service-card:hover, .blog-card:hover {
        transform: translateY(-3px);
    }
    
    a:hover, button:hover {
        transform: translateY(-1px);
    }
}

/**
 * تأثيرات الـ Link Active
 */
a.active {
    color: #C9A35E;
    font-weight: 600;
    transition: all 0.3s var(--transition-timing);
}

/**
 * تأثيرات الـ Loading Bar
 */
@keyframes loadingBar {
    0% { width: 0%; }
    50% { width: 90%; }
    100% { width: 100%; }
}

.loading-bar {
    height: 3px;
    background: linear-gradient(90deg, #C9A35E, #D4AF73);
    animation: loadingBar 1s var(--transition-timing) forwards;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
}