/* =============================================================================
   Pastyghost Animations
   Subtle, performant animations with reduced-motion support
   ============================================================================= */

/* =============================================================================
   Fade In Animations
   ============================================================================= */

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered delays */
.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

.delay-5 {
    transition-delay: 0.5s;
}

/* =============================================================================
   Ghost Float Animation
   ============================================================================= */

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

.hero-ghost {
    animation: ghostFloat 3s ease-in-out infinite;
}

/* =============================================================================
   Cursor Blink Animation
   ============================================================================= */

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

.cursor {
    animation: blink 1s step-end infinite;
}

/* =============================================================================
   Key Hover Glow
   ============================================================================= */

@keyframes keyGlow {
    0%, 100% {
        box-shadow: 0 0 0 rgba(0, 255, 0, 0);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
    }
}

.key-v {
    animation: keyGlow 2s ease-in-out infinite;
}

/* =============================================================================
   Button Hover Effects
   ============================================================================= */

.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn:hover::after {
    width: 300px;
    height: 300px;
}

.btn-primary::after {
    background: rgba(0, 0, 0, 0.1);
}

/* =============================================================================
   Price Pulse Animation
   ============================================================================= */

@keyframes pricePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.price-display:hover {
    animation: pricePulse 0.5s ease-in-out;
}

/* =============================================================================
   Feature Card Hover
   ============================================================================= */

.feature-card {
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--green-bright);
}

/* =============================================================================
   Problem Item Hover
   ============================================================================= */

.problem-item {
    transition: background 0.2s ease;
}

.problem-item:hover {
    background: rgba(0, 255, 0, 0.05);
}

.problem-item:hover .problem-number {
    background: var(--green-bright);
    color: var(--black);
}

/* =============================================================================
   Step Hover Effects
   ============================================================================= */

.step {
    transition: transform 0.2s ease;
}

.step:hover {
    transform: translateX(4px);
}

.step:hover .step-number {
    background: var(--green-bright);
    color: var(--black);
}

/* =============================================================================
   Privacy Item Hover
   ============================================================================= */

.privacy-item {
    transition: color 0.2s ease, transform 0.2s ease;
}

.privacy-item:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

/* =============================================================================
   Badge Hover
   ============================================================================= */

.badge {
    transition: background 0.2s ease, color 0.2s ease;
}

.badge:hover {
    background: var(--green-bright);
    color: var(--black);
}

/* =============================================================================
   Nav Scroll Shadow
   ============================================================================= */

.nav {
    transition: box-shadow 0.3s ease;
}

.nav.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

/* =============================================================================
   Link Underline Animation
   ============================================================================= */

.footer-link {
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--green-bright);
    transition: width 0.2s ease;
}

.footer-link:hover::after {
    width: 100%;
}

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

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

    .hero-ghost {
        animation: none;
    }

    .cursor {
        animation: none;
        opacity: 1;
    }

    .key-v {
        animation: none;
    }

    .btn::after {
        display: none;
    }

    .price-display:hover {
        animation: none;
    }

    .feature-card,
    .step,
    .privacy-item,
    .problem-item {
        transition: none;
    }

    .feature-card:hover,
    .step:hover,
    .privacy-item:hover {
        transform: none;
    }
}

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

/* Initial state - elements start invisible */
body:not(.loaded) .fade-in-up {
    opacity: 0;
    transform: translateY(20px);
}

/* Smooth page transition */
body {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* =============================================================================
   Scroll Progress Indicator (Optional)
   ============================================================================= */

.scroll-progress {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-bright);
    z-index: 1001;
    transition: width 0.1s linear;
}

/* =============================================================================
   Focus States for Accessibility
   ============================================================================= */

.btn:focus-visible,
.footer-link:focus-visible,
.nav-logo:focus-visible {
    outline: 2px solid var(--green-bright);
    outline-offset: 2px;
}

/* =============================================================================
   Interactive Key Animation (on hover)
   ============================================================================= */

.key {
    transition: transform 0.1s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.key:hover {
    transform: translateY(-2px);
}

.key:active {
    transform: translateY(0);
}

/* =============================================================================
   Demo Window Typing Effect (CSS-only simulation)
   ============================================================================= */

.demo-text {
    overflow: hidden;
}

.demo-blink {
    animation: fadeIn 0.5s ease 1s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* =============================================================================
   Section Reveal on Scroll (Enhanced)
   ============================================================================= */

.section {
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: var(--green-bright);
    transition: width 0.5s ease;
    opacity: 0.3;
}

.section.in-view::before {
    width: 100px;
}