/**
 * Modern Shared Styles
 * Glassmorphism, animations, and premium interactions
 * Add this to any page for modern design effects
 */

/* ============================================
   GLASSMORPHISM UTILITIES
   ============================================ */
.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.glass-subtle {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-10px) rotate(2deg);
    }
    75% {
        transform: translateY(10px) rotate(-2deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.02);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--glow-color, rgba(124, 58, 237, 0.3));
    }
    50% {
        box-shadow: 0 0 40px var(--glow-color, rgba(124, 58, 237, 0.5));
    }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.from-left {
    transform: translateX(-30px);
}

.animate-on-scroll.from-left.visible {
    transform: translateX(0);
}

.animate-on-scroll.from-right {
    transform: translateX(30px);
}

.animate-on-scroll.from-right.visible {
    transform: translateX(0);
}

.animate-on-scroll.scale {
    transform: scale(0.9);
}

.animate-on-scroll.scale.visible {
    transform: scale(1);
}

/* Stagger delays */
.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }
.animate-delay-5 { transition-delay: 0.5s; }

/* ============================================
   PREMIUM HOVER EFFECTS
   ============================================ */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

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

.hover-glow:hover {
    box-shadow: 0 0 30px var(--glow-color, rgba(124, 58, 237, 0.4));
}

.hover-scale {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s ease;
}

.hover-shine:hover::before {
    left: 100%;
}

/* Card hover with border glow */
.hover-border-glow {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.hover-border-glow:hover {
    border-color: var(--primary, #7c3aed);
    box-shadow: 0 0 0 3px var(--primary-soft, rgba(124, 58, 237, 0.1));
}

/* ============================================
   BUTTON EFFECTS
   ============================================ */
.btn-modern {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-modern:hover::before {
    width: 300%;
    height: 300%;
}

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--btn-shadow, rgba(0, 0, 0, 0.2));
}

.btn-modern:active {
    transform: translateY(0);
}

/* Gradient button */
.btn-gradient {
    background: linear-gradient(135deg, var(--gradient-start, #7c3aed), var(--gradient-end, #06b6d4));
    border: none;
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-gradient:hover {
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
}

/* ============================================
   INPUT EFFECTS
   ============================================ */
.input-modern {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-modern:focus {
    outline: none;
    border-color: var(--primary, #7c3aed);
    box-shadow: 0 0 0 3px var(--primary-soft, rgba(124, 58, 237, 0.1));
}

/* ============================================
   BACKGROUND DECORATIONS
   ============================================ */
.bg-gradient-hero {
    background: linear-gradient(135deg, var(--gradient-start, #667eea) 0%, var(--gradient-mid, #764ba2) 50%, var(--gradient-end, #06b6d4) 100%);
}

.bg-gradient-subtle {
    background: linear-gradient(180deg, var(--bg-start, #fafafa) 0%, var(--bg-end, #f0f0ff) 100%);
}

.bg-blob {
    position: relative;
    overflow: hidden;
}

.bg-blob::before,
.bg-blob::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    pointer-events: none;
    animation: float 15s ease-in-out infinite;
}

.bg-blob::before {
    width: 400px;
    height: 400px;
    background: var(--blob-color-1, rgba(124, 58, 237, 0.3));
    top: -100px;
    right: -100px;
}

.bg-blob::after {
    width: 350px;
    height: 350px;
    background: var(--blob-color-2, rgba(6, 182, 212, 0.3));
    bottom: -50px;
    left: -50px;
    animation-delay: -7s;
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--spinner-bg, #e5e5e5);
    border-top-color: var(--spinner-color, #7c3aed);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   RESPONSIVE INTERACTIONS
   ============================================ */
@media (hover: hover) {
    /* Only apply hover effects on devices that support hover */
    .touch-hover:hover {
        transform: scale(1.02);
    }
}

@media (prefers-reduced-motion: reduce) {
    .animate-on-scroll,
    .hover-lift,
    .hover-scale,
    .hover-shine::before,
    .bg-blob::before,
    .bg-blob::after {
        animation: none;
        transition: none;
    }

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }
}

/* Touch-friendly sizes on mobile */
@media (max-width: 768px) {
    .btn-modern,
    .input-modern,
    button,
    input,
    select {
        min-height: 44px; /* Apple HIG touch target */
    }

    .bg-blob::before,
    .bg-blob::after {
        width: 250px;
        height: 250px;
        filter: blur(80px);
    }
}

/* ============================================
   SCROLL ANIMATION INIT SCRIPT
   ============================================ */
/*
Add this script to enable scroll animations:

<script>
const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            entry.target.classList.add('visible');
        }
    });
}, { threshold: 0.1, rootMargin: '0px 0px -50px 0px' });

document.querySelectorAll('.animate-on-scroll').forEach(el => observer.observe(el));
</script>
*/