/*
 * Website Optimizations
 * - Reduced spacing for better content density
 * - Smooth animations and micro-interactions
 * - Responsive design optimizations
 * - Performance enhancements
 */

/* ========================================
   SPACING OPTIMIZATIONS (減少空白區域)
   ======================================== */

/* Reduced section padding for better content density */
.section-compact {
    padding: 3rem 0 !important; /* Reduced from 5rem */
}

.section-compact-mobile {
    padding: 2rem 0 !important; /* Mobile specific */
}

@media (min-width: 768px) {
    .section-compact {
        padding: 4rem 0 !important;
    }
}

@media (min-width: 1024px) {
    .section-compact {
        padding: 5rem 0 !important;
    }
}

/* Optimized container spacing */
.container-optimized {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container-optimized {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container-optimized {
        padding: 0 2rem;
    }
}

/* Reduced grid gaps */
.grid-compact {
    gap: 1.5rem !important;
}

@media (min-width: 768px) {
    .grid-compact {
        gap: 2rem !important;
    }
}

/* Compact card spacing */
.card-compact {
    padding: 1.5rem !important;
}

@media (min-width: 768px) {
    .card-compact {
        padding: 2rem !important;
    }
}

/* ========================================
   SMOOTH ANIMATIONS & MICRO-INTERACTIONS
   ======================================== */

/* Page load animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInRight {
    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 countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation classes */
.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease-out forwards;
}

.animate-count-up {
    animation: countUp 0.8s ease-out forwards;
}

/* Stagger delays for sequential animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Scroll-triggered animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.scroll-animate.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Hover effects for cards and buttons */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

.hover-scale:hover {
    transform: scale(1.02);
}

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

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.3);
}

/* Button micro-interactions */
.btn-interactive {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-interactive::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-interactive:hover::before {
    left: 100%;
}

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

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

/* Parallax effects */
.parallax-slow {
    transform: translateY(var(--scroll-y, 0) * 0.5);
}

.parallax-medium {
    transform: translateY(var(--scroll-y, 0) * 0.3);
}

.parallax-fast {
    transform: translateY(var(--scroll-y, 0) * 0.1);
}

/* ========================================
   RESPONSIVE DESIGN OPTIMIZATIONS
   ======================================== */

/* Touch-friendly button sizes */
.btn-touch {
    min-height: 44px;
    min-width: 44px;
    padding: 0.75rem 1.5rem;
}

/* Mobile-optimized typography */
.text-mobile-optimized {
    font-size: 16px !important;
    line-height: 1.5;
}

@media (min-width: 768px) {
    .text-mobile-optimized {
        font-size: 18px !important;
    }
}

/* Responsive images */
.img-responsive {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Mobile navigation optimizations */
.mobile-nav-optimized {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

/* Form optimizations for mobile */
.form-mobile-optimized input,
.form-mobile-optimized select,
.form-mobile-optimized textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    transition: border-color 0.3s ease;
}

.form-mobile-optimized input:focus,
.form-mobile-optimized select:focus,
.form-mobile-optimized textarea:focus {
    border-color: #dc2626;
    outline: none;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */

/* Lazy loading images */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy-image.loaded {
    opacity: 1;
}

/* Optimized animations for 60fps */
.smooth-animation {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .parallax-slow,
    .parallax-medium,
    .parallax-fast {
        transform: none !important;
    }
}

/* ========================================
   MOBILE-SPECIFIC OPTIMIZATIONS
   ======================================== */

/* Mobile breakpoints */
@media (max-width: 767px) {
    /* Compact spacing for mobile */
    .py-20 { padding-top: 3rem !important; padding-bottom: 3rem !important; }
    .py-16 { padding-top: 2.5rem !important; padding-bottom: 2.5rem !important; }
    .py-12 { padding-top: 2rem !important; padding-bottom: 2rem !important; }
    
    /* Mobile typography */
    .text-4xl { font-size: 2rem !important; }
    .text-3xl { font-size: 1.75rem !important; }
    .text-2xl { font-size: 1.5rem !important; }
    
    /* Mobile grid adjustments */
    .grid-cols-3 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
    .grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
    
    /* Mobile card adjustments */
    .card-brand { padding: 1.5rem !important; }
}

/* Tablet optimizations */
@media (min-width: 768px) and (max-width: 1023px) {
    .section-compact {
        padding: 4rem 0 !important;
    }
    
    .grid-compact {
        gap: 2rem !important;
    }
}

/* Large desktop optimizations */
@media (min-width: 1440px) {
    .container-optimized {
        max-width: 1400px;
    }
    
    .section-compact {
        padding: 6rem 0 !important;
    }
}

/* ========================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================== */

/* Focus indicators */
.focus-visible {
    outline: 2px solid #dc2626;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card-brand {
        border: 2px solid #000;
    }
    
    .btn-brand-primary {
        border: 2px solid #000;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

/* Quick spacing utilities */
.space-y-compact > * + * {
    margin-top: 1rem;
}

.space-y-compact-lg > * + * {
    margin-top: 1.5rem;
}

/* Content density utilities */
.content-dense {
    line-height: 1.4;
}

.content-dense p {
    margin-bottom: 0.75rem;
}

/* Performance utilities */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}

.no-select {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}