/* ============================================================
   PersonalStudy — Landing Page UX Enhancements (Priority 2)
   Scroll animations · Counter animations · Card interactions
   
   Add in landing.php <head>:
   <link href="assets/landing_ux.css" rel="stylesheet">
   ============================================================ */


/* ============================================================
   SCROLL-REVEAL ANIMATIONS
   Elements fade/slide in when they enter the viewport.
   Applied via .reveal class + JS IntersectionObserver.
   ============================================================ */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered children — add .reveal-stagger to parent */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.revealed > * {
    opacity: 1;
    transform: translateY(0);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.15s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.25s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.35s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.45s; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.55s; }


/* ============================================================
   HERO SECTION ENHANCEMENTS
   Typing effect, floating elements, parallax tilt
   ============================================================ */

/* Animated gradient text shimmer */
@keyframes gradientShimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.text-gradient-animated {
    background: linear-gradient(135deg, #6C63FF, #FF6584, #00C9A7, #6C63FF);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShimmer 4s ease infinite;
}

/* Hero entry animation */
@keyframes heroSlideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ps-hero-title {
    animation: heroSlideUp 0.8s ease forwards;
}

.ps-hero-subtitle {
    animation: heroSlideUp 0.8s 0.15s ease forwards;
    opacity: 0;
}

.ps-hero-cta {
    animation: heroSlideUp 0.8s 0.3s ease forwards;
    opacity: 0;
}

.ps-hero-stats {
    animation: heroSlideUp 0.8s 0.45s ease forwards;
    opacity: 0;
}

/* Hero stat counter animation container */
.stat-number[data-count] {
    display: inline-block;
}

@keyframes countPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.stat-number.counting {
    animation: countPulse 0.3s ease;
}


/* ============================================================
   FEATURE CARDS — Enhanced hover interactions
   ============================================================ */

.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(108, 99, 255, 0.12);
}

.feature-card .feature-icon {
    transition: transform 0.3s var(--fun-bounce, cubic-bezier(0.68, -0.55, 0.265, 1.55));
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(-5deg);
}


/* ============================================================
   COURSE CARDS — Lift, glow, and badge pulse
   ============================================================ */

.course-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    position: relative;
}

.course-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.03), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.course-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: 0 16px 48px rgba(108, 99, 255, 0.12);
}

.course-card:hover::before {
    opacity: 1;
}

.course-card .course-cta i {
    transition: transform 0.3s ease;
}

.course-card:hover .course-cta i {
    transform: translateX(5px);
}

/* Badge pulse on hover */
.course-badge {
    transition: transform 0.3s ease;
}

.course-card:hover .course-badge {
    animation: badgePulse 1s ease infinite;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}


/* ============================================================
   STEP CARDS (How It Works) — Number pop
   ============================================================ */

.step-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.step-card .step-number {
    transition: transform 0.3s var(--fun-bounce, cubic-bezier(0.68, -0.55, 0.265, 1.55)), background 0.3s ease;
}

.step-card:hover .step-number {
    transform: scale(1.2);
    background: var(--primary, #6C63FF);
    color: white;
}


/* ============================================================
   MOBILE ENHANCEMENTS
   ============================================================ */

@media (max-width: 767.98px) {
    /* Reduce animation distances on mobile */
    .reveal { transform: translateY(20px); }
    .reveal-left { transform: translateX(-20px); }
    .reveal-right { transform: translateX(20px); }
    
    /* Touch-friendly course cards */
    .course-card:active {
        transform: scale(0.98);
    }
    
    /* Compact feature cards */
    .feature-card {
        text-align: left;
        display: flex;
        gap: 16px;
        align-items: flex-start;
    }
    
    .feature-card .feature-icon {
        flex-shrink: 0;
    }
}


/* ============================================================
   REDUCED MOTION — Respect user preference
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-stagger > * {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .ps-hero-title,
    .ps-hero-subtitle,
    .ps-hero-cta,
    .ps-hero-stats {
        animation: none;
        opacity: 1;
    }
    
    .text-gradient-animated {
        animation: none;
    }
}
