/* ============================================
   ANIMATIONS
   Scroll-triggered animations and transitions
   ============================================ */

/* ========== Fade In Up Animation ========== */

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger animation for groups */
.fade-in-up:nth-child(1).visible { transition-delay: 0s; }
.fade-in-up:nth-child(2).visible { transition-delay: 0.1s; }
.fade-in-up:nth-child(3).visible { transition-delay: 0.2s; }
.fade-in-up:nth-child(4).visible { transition-delay: 0.3s; }
.fade-in-up:nth-child(5).visible { transition-delay: 0.4s; }
.fade-in-up:nth-child(6).visible { transition-delay: 0.5s; }


/* ========== Fade In (no movement) ========== */

.fade-in {
    opacity: 0;
    transition: opacity 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
}


/* ========== Scale In Animation ========== */

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}


/* ========== Slide In From Left ========== */

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}


/* ========== Slide In From Right ========== */

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}


/* ========== Reduced Motion Support ========== */

@media (prefers-reduced-motion: reduce) {
    .fade-in-up,
    .fade-in,
    .scale-in,
    .slide-in-left,
    .slide-in-right {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .fade-in-up.visible,
    .fade-in.visible,
    .scale-in.visible,
    .slide-in-left.visible,
    .slide-in-right.visible {
        opacity: 1;
        transform: none;
    }

    /* Disable all keyframe animations */
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* ========== Loading State ========== */

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

.loading {
    background: linear-gradient(
        90deg,
        var(--color-bg-gray) 0%,
        var(--color-bg-light) 50%,
        var(--color-bg-gray) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}


/* ========== Pulse Animation (for interactive elements) ========== */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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


/* ========== Bounce Animation ========== */

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.bounce {
    animation: bounce 2s ease-in-out infinite;
}


/* ========== Spin Animation (for loading) ========== */

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spin {
    animation: spin 1s linear infinite;
}


/* ========== Gradient Animation (for backgrounds) ========== */

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

.gradient-animated {
    background-size: 200% 200%;
    animation: gradient-shift 15s ease infinite;
}


/* ========== Hero Specific Animations ========== */

/* Fade in hero elements on load */
.hero-title,
.hero-description,
.hero-cta {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-title {
    animation-delay: 0.2s;
}

.hero-description {
    animation-delay: 0.4s;
}

.hero-cta {
    animation-delay: 0.6s;
}

.hero-visual {
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
    opacity: 0;
}

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


/* ========== Interactive Hover Effects ========== */

/* Lift effect on hover */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Scale effect on hover */
.hover-scale {
    transition: transform var(--transition-base);
}

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

/* Glow effect on hover */
.hover-glow {
    transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}


/* ========== Navbar Scroll Behavior ========== */

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}


/* ========== Page Load Animation ========== */

.page-loaded .hero-title,
.page-loaded .hero-description,
.page-loaded .hero-cta,
.page-loaded .hero-visual {
    animation-play-state: running;
}