.bg-grid-pattern {
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
    mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}
.dark .bg-grid-pattern {
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

.bg-noise {
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
}

.preserve-3d { transform-style: preserve-3d; }
.perspective-1000 { perspective: 1000px; }
.backface-hidden { backface-visibility: hidden; }
.parallax-img { will-change: transform; }
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

#preloader {
    transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.6s;
}
#preloader.hide {
    opacity: 0;
    visibility: hidden;
}

/* Toast Animation */
.toast-enter {
    transform: translateY(100%) scale(0.9);
    opacity: 0;
}
.toast-enter-active {
    transform: translateY(0) scale(1);
    opacity: 1;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.toast-exit {
    transform: translateY(0) scale(1);
    opacity: 1;
}
.toast-exit-active {
    transform: translateY(20px) scale(0.9);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

*:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 4px;
}

/* Filter Button Active State */
.filter-btn.active {
    background-color: #2563eb;
    color: white;
    border-color: #2563eb;
}
.dark .filter-btn.active {
    color: white;
}

/* Spotlight & Hover Effects */
.spotlight-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s ease;
}
.spotlight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.1);
}
.dark .spotlight-card:hover {
    box-shadow: 0 20px 40px -10px rgba(255,255,255,0.05);
}
.spotlight-overlay {
    pointer-events: none;
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.3s;
    background: radial-gradient(600px circle at var(--mouse-x) var(--mouse-y), rgba(37, 99, 235, 0.1), transparent 40%);
    z-index: 20;
}
.spotlight-card:hover .spotlight-overlay {
    opacity: 1;
}

/* Modern Scroll Reveal */
.reveal-on-scroll {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(30px) scale(0.95);
    transition: all 1s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity, filter, transform;
}
.reveal-on-scroll.is-visible {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
}

/* Stagger Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Magnetic Button Effect Base Class */
.magnetic-btn {
    display: inline-block;
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ===== HERO SECTION ANIMATIONS ===== */
@keyframes heroFadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes badgeReveal {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.95);
        filter: blur(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes heroHeadingReveal {
    from {
        opacity: 0;
        transform: translateY(30px);
        filter: blur(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes profileImageEnter {
    from {
        opacity: 0;
        transform: scale(0.85) rotateY(20deg);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) rotateY(0);
        filter: blur(0);
    }
}

@keyframes circleRotateIn {
    from {
        opacity: 0;
        transform: rotate(90deg) scale(0.8);
    }
    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes glowPulse {
    0%, 100% {
        filter: drop-shadow(0 0 20px rgba(37, 99, 235, 0.4));
    }
    50% {
        filter: drop-shadow(0 0 40px rgba(37, 99, 235, 0.6));
    }
}

@keyframes buttonScaleIn {
    from {
        opacity: 0;
        transform: translateY(15px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Hero Badge Animation */
.hero-badge {
    animation: badgeReveal 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.1s;
}

/* Hero Heading Lines Animation */
.hero-heading-line {
    animation: heroHeadingReveal 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
.hero-heading-line:nth-child(1) { animation-delay: 0.2s; }
.hero-heading-line:nth-child(2) { animation-delay: 0.35s; }
.hero-heading-line:nth-child(3) { animation-delay: 0.5s; }

/* Hero Paragraph Animation */
.hero-description {
    animation: heroFadeInUp 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.65s;
    opacity: 0;
}

/* Hero Buttons Container Animation */
.hero-buttons {
    animation: heroFadeInUp 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.8s;
    opacity: 0;
}

/* Hero Image Container Animation */
.hero-image-container {
    animation: profileImageEnter 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.4s;
    opacity: 0;
    perspective: 1000px;
}

/* Circular Elements Animation */
.hero-circle-outer {
    animation: circleRotateIn 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

.hero-circle-middle {
    animation: circleRotateIn 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.6s;
    opacity: 0;
    animation-direction: reverse;
}

/* Profile Image Glow Effect */
.hero-image-glow {
    animation: glowPulse 3s ease-in-out infinite;
    animation-delay: 1.4s;
}

/* Hero Profile Image */
.hero-profile-img {
    animation: profileImageEnter 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    animation-delay: 0.4s;
}