/* =====================================================
   تأثيرات التفاعل - Interactive Effects Styles
   ===================================================== */

/* ===========================================
   شريط تقدّم التمرير في الأعلى
   =========================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(201, 169, 97, 0.08);
    z-index: 9999;
    pointer-events: none;
}

.scroll-progress__fill {
    height: 100%;
    background: linear-gradient(90deg,
        var(--color-gold-bright),
        var(--color-gold-shimmer),
        var(--color-emerald-mid));
    transform-origin: right center;
    transform: scaleX(0);
    transition: transform 80ms linear;
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.6);
}

/* ===========================================
   تأثير Ripple على الأزرار (دقيق)
   =========================================== */
.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle,
        currentColor 0%,
        currentColor 30%,
        transparent 70%);
    opacity: 0.18;
    transform: scale(0);
    animation: ripple-spread 600ms cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    z-index: 1;
    mix-blend-mode: multiply;
}

@keyframes ripple-spread {
    0% {
        transform: scale(0);
        opacity: 0.22;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* ===========================================
   Tilt 3D للكروت + Glow Effect
   =========================================== */
.card,
.quick-link-card,
.book-card,
.announcement-card,
.social-item,
.timeline-item__body {
    --glow-x: 50%;
    --glow-y: 50%;
    transform-style: preserve-3d;
    transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.card::after,
.quick-link-card::after,
.book-card::after,
.announcement-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at var(--glow-x) var(--glow-y),
        rgba(212, 175, 55, 0.15),
        transparent 40%
    );
    border-radius: inherit;
    opacity: 0;
    transition: opacity 300ms ease;
    pointer-events: none;
    z-index: 4;
}

.card:hover::after,
.quick-link-card:hover::after,
.book-card:hover::after,
.announcement-card:hover::after {
    opacity: 1;
}

/* ===========================================
   جسيمات السايدبار العائمة
   =========================================== */
.sidebar-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.sidebar-particles__dot {
    position: absolute;
    bottom: -10px;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, var(--color-gold-shimmer), transparent);
    border-radius: 50%;
    animation: particle-rise 12s linear infinite;
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.6);
}

@keyframes particle-rise {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-110vh) translateX(40px);
        opacity: 0;
    }
}

/* ===========================================
   Hero Spotlight (يتبع المؤشّر)
   =========================================== */
.hero {
    --spotlight-x: 50%;
    --spotlight-y: 50%;
}

.hero::before {
    background-image:
        radial-gradient(circle at var(--spotlight-x) var(--spotlight-y),
            rgba(212, 175, 55, 0.22),
            transparent 40%),
        radial-gradient(circle at 30% 20%, rgba(201, 169, 97, 0.1), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(212, 175, 55, 0.08), transparent 50%);
    /*
     * لا انتقال هنا عمداً. المتدرّج ليس خاصية مركّبة، فتحريكه يُعيد رسترة
     * كامل مساحة الواجهة على الخيط الرئيسي في كل إطار — ومع تحديث موضع
     * البقعة عند كل حركة فأرة كان ذلك يُجمّد الصفحة تماماً.
     */
}

/* ===========================================
   تأثير لمعان على عنوان الـ hero
   =========================================== */
.hero__title-accent,
.hero__title--shimmer .hero__title-accent {
    background: linear-gradient(
        90deg,
        var(--color-gold-bright) 0%,
        var(--color-gold-shimmer) 25%,
        #fff5d4 50%,
        var(--color-gold-shimmer) 75%,
        var(--color-gold-bright) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    /*
     * دورتان لا إلى الأبد: تحريك background-position ليس مركّباً، وقصّه
     * على النصّ يُعيد بناء قناع الحروف في كل إطار — فتبقى الصفحة ترسم
     * أبداً ولا تصل إلى الخمول.
     */
    animation: text-shimmer 4s linear 2;
}

@keyframes text-shimmer {
    0%   { background-position: 200% center; }
    100% { background-position: -200% center; }
}

/* ===========================================
   انميشن دخول السايدبار
   =========================================== */
.sidebar-nav__item--animate-in {
    animation: nav-item-slide-in 600ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes nav-item-slide-in {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.sidebar-brand {
    animation: brand-fade-in 800ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes brand-fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================================
   Sparkles على الأزرار الذهبية
   =========================================== */
.btn-gold {
    position: relative;
    overflow: visible !important;
}

.gold-sparkle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: white;
    border-radius: 50%;
    pointer-events: none;
    box-shadow: 0 0 6px white, 0 0 12px var(--color-gold-shimmer);
    animation: sparkle-burst 800ms ease-out forwards;
    z-index: 10;
}

@keyframes sparkle-burst {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 0;
    }
    20% {
        transform: scale(1.5) rotate(90deg);
        opacity: 1;
    }
    100% {
        transform: scale(0) rotate(180deg) translateY(-30px);
        opacity: 0;
    }
}

/* ===========================================
   Image fade-in on load
   =========================================== */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 600ms ease;
}

img[loading="lazy"].img-loaded {
    opacity: 1;
}

/* ===========================================
   تأثير hover إضافي على cards
   =========================================== */
/*
 * `will-change` كان مفروضاً على كل غلاف بطاقة دائماً، فينشئ طبقة GPU لكل
 * واحدة. مع مئة بطاقة تتجاوز الطبقاتُ حدَّ الذاكرة فيتخلّى المتصفّح عن
 * الترقية دفعةً واحدة ويعود إلى الرسم على الخيط الرئيسي. الترقية الآن
 * عند التحويم وحده — وهو وقت الحاجة إليها.
 */
.card:hover .card__cover-media {
    will-change: transform;
}

.card:hover .card__cover {
    box-shadow: inset 0 -50px 80px rgba(10, 61, 46, 0.4);
}

/* ===========================================
   Hover effect إضافي لروابط السايدبار
   =========================================== */
.sidebar-nav__link {
    overflow: hidden;
}

.sidebar-nav__link::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, var(--color-gold-bright), var(--color-gold-deep));
    transform: translateY(-50%);
    transition: height var(--transition-base);
    border-radius: var(--radius-full) 0 0 var(--radius-full);
}

.sidebar-nav__link:hover::after,
.sidebar-nav__link.is-active::after {
    height: 70%;
}

/* ===========================================
   الأزرار: hover lift نظيف بدون شفافيات بيضاء
   =========================================== */
.btn-primary,
.btn-gold {
    position: relative;
}

.btn-primary:hover {
    filter: brightness(1.05);
}

.btn-gold:hover {
    filter: brightness(1.04);
}

/* ===========================================
   تأثير entry للصفحة بأكملها
   =========================================== */
.app-content {
    animation: page-enter 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes page-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================================
   بطاقات quick-links — hover متقدّم
   =========================================== */
.quick-link-card {
    overflow: hidden;
}

.quick-link-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-gold-soft), var(--color-emerald-deep));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.quick-link-card > * {
    position: relative;
    z-index: 1;
}

.quick-link-card:hover::before {
    opacity: 0.04;
}

.quick-link-card .quick-link-card__icon {
    transition: transform var(--transition-base);
}

.quick-link-card:hover .quick-link-card__icon {
    transform: rotate(-6deg) scale(1.08);
}

/* ===========================================
   Pulse على الإعلانات المثبّتة
   =========================================== */
.announcement-card.is-pinned::before {
    animation: pin-pulse 2.5s ease-in-out infinite;
}

@keyframes pin-pulse {
    0%, 100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.15);
    }
}

/* ===========================================
   Hero greeting bounce-in
   =========================================== */
.hero__greeting {
    animation: greeting-bounce 800ms cubic-bezier(0.34, 1.56, 0.64, 1) 200ms both;
}

@keyframes greeting-bounce {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===========================================
   Filter chip hover lift
   =========================================== */
.filter-chip {
    transform: translateY(0);
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(201, 169, 97, 0.2);
}

.filter-chip.is-active {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(10, 61, 46, 0.3);
}

/* ===========================================
   Timeline marker pulse
   =========================================== */
.timeline-item__marker {
    animation: marker-glow 3s ease-in-out infinite;
}

@keyframes marker-glow {
    0%, 100% {
        box-shadow: 0 0 0 2px var(--color-gold-soft), 0 0 0 8px rgba(212, 175, 55, 0);
    }
    50% {
        box-shadow: 0 0 0 2px var(--color-gold-soft), 0 0 0 12px rgba(212, 175, 55, 0.3);
    }
}

/* ===========================================
   Header scroll effect
   =========================================== */
.app-header.is-scrolled {
    box-shadow: 0 4px 24px rgba(26, 20, 16, 0.06);
    background: rgba(250, 247, 240, 0.95);
}

/* ===========================================
   Decorative ornament floating
   =========================================== */
.ornament {
    animation: ornament-drift 6s ease-in-out infinite;
}

@keyframes ornament-drift {
    0%, 100% {
        transform: translateY(0);
        letter-spacing: 1rem;
    }
    50% {
        transform: translateY(-4px);
        letter-spacing: 1.2rem;
    }
}

/* ===========================================
   Reduced motion fallback
   =========================================== */
@media (prefers-reduced-motion: reduce) {
    .ripple-effect,
    .gold-sparkle,
    .sidebar-particles__dot,
    .hero__title-accent {
        animation: none !important;
    }

    .scroll-progress__fill {
        transition: none;
    }
}

/*
 * القائمة الجانبية مُزاحة خارج الشاشة على الشاشات الصغيرة، وجسيماتها
 * الاثنا عشر كانت تتحرّك أبداً رغم أن أحداً لا يراها — فتُبقي اثنتي عشرة
 * طبقة تركيب حيّة وتمنع الصفحة من بلوغ الخمول.
 */
.app-sidebar:not(.is-open) .sidebar-particles__dot {
    animation: none;
}

@media (prefers-reduced-motion: reduce) {
    .sidebar-particles__dot,
    .hero__title-accent {
        animation: none;
    }
}