/* =========================================
   متغيرات النظام (Design Tokens)
   ========================================= */
:root {
    /* الألوان الأساسية */
    --bg-main: #020617;
    --bg-secondary: #0a0f2c;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);

    /* الألوان الرئيسية */
    --primary: #00d4ff;
    --primary-dark: #00a8cc;
    --secondary: #a855f7;
    --secondary-dark: #8533d6;

    /* النصوص */
    --text-main: #e5e7eb;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    /* الحدود والظلال */
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(0, 212, 255, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.4);

    /* المسافات */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* الأحجام */
    --container-max: 1400px;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-full: 999px;

    /* الانتقالات */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
}

/* =========================================
   خلفية النجوم المتحركة
   ========================================= */
.stars-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background-image:
        radial-gradient(2px 2px at 20px 30px, white, transparent),
        radial-gradient(2px 2px at 60px 70px, white, transparent),
        radial-gradient(1px 1px at 50px 50px, white, transparent),
        radial-gradient(1px 1px at 130px 80px, white, transparent),
        radial-gradient(2px 2px at 90px 10px, white, transparent);
    background-size: 200px 200px;
    background-position: 0 0, 40px 60px, 130px 270px, 70px 100px, 150px 50px;
    animation: stars-float 120s linear infinite;
    opacity: 0.5;
}

@keyframes stars-float {
    from {
        background-position: 0 0, 40px 60px, 130px 270px, 70px 100px, 150px 50px;
    }

    to {
        background-position: -1000px 1000px, -960px 1060px, -870px 1270px, -930px 1100px, -850px 1050px;
    }
}

.stars-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
    opacity: 0.3;
}

/* =========================================
   Glassmorphism Cards
   ========================================= */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(15px) saturate(150%);
    -webkit-backdrop-filter: blur(15px) saturate(150%);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.glass-card:hover::before {
    left: 100%;
}

.glass-card:hover {
    transform: translateY(-8px) scale(1.02);
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

/* =========================================
   الأزرار التفاعلية
   ========================================= */
.btn {
    padding: 14px 32px;
    border-radius: var(--border-radius-full);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #000;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.6);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary span {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary);
}

/* =========================================
   تأثيرات التمرير (Reveal Animation)
   ========================================= */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

/* =========================================
   Grid System
   ========================================= */
.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 968px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

/* =========================================
   Typography Enhancements
   ========================================= */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow-text {
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.6);
}

/* =========================================
   أنيميشن التحميل
   ========================================= */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}