/* Custom CSS for enhanced styling */

/* Brand base */
:root {
    --brand-brown: #8e531d;
    --brand-brown-dark: #774418;
    --brand-blue: #0093cd;
}

html, body { font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }

/* Hero Section Background */
.hero-section {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), 
                url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIgdmlld0JveD0iMCAwIDEwMCAxMDAiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxyZWN0IHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiBmaWxsPSIjMmEyYTJhIi8+CjxjaXJjbGUgY3g9IjIwIiBjeT0iMjAiIHI9IjMiIGZpbGw9IiM0YTRhNGEiLz4KPGNpcmNsZSBjeD0iODAiIGN5PSI4MCIgcj0iMiIgZmlsbD0iIzNhM2EzYSIvPgo8Y2lyY2xlIGN4PSI2MCIgY3k9IjMwIiByPSIyLjUiIGZpbGw9IiM1YTVhNWEiLz4KPGNpcmNsZSBjeD0iMzAiIGN5PSI3MCIgcj0iNCIgZmlsbD0iIzNhM2EzYSIvPgo8L3N2Zz4K');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* Ribbon label */
.ribbon {
    position: absolute;
    top: 14px;
    left: -12px;
    background: var(--brand-blue);
    color: #fff;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 6px 14px;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* Pill badge */
.pill-badge {
    position: absolute;
    bottom: 14px;
    right: 14px;
    background: var(--brand-brown);
    color: #fff;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* Aspect-ratio image frames for easy swap */
.image-frame {
    position: relative;
    background: #f3f4f6;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.ratio-1x1 { padding-top: 100%; }
.ratio-4x3 { padding-top: 75%; }
.ratio-3x4 { padding-top: 133.3333%; }
.ratio-16x9 { padding-top: 56.25%; }
.ratio-21x9 { padding-top: 42.8571%; }
.ratio-4x5 { padding-top: 125%; }
.ratio-3x2 { padding-top: 66.6667%; }

.ratio-content {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Drag & drop styles removed per requirement (no public DnD) */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Simple animations - keeping it clean */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* Product showcase enhancements */
.coal-product-showcase {
    position: relative;
    overflow: hidden;
}

.coal-product-showcase::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

.coal-piece {
    position: relative;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.coal-piece::after {
    content: '';
    position: absolute;
    top: 10%;
    left: 10%;
    width: 30%;
    height: 30%;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    filter: blur(4px);
}

/* Product image enhancements */
.product-image {
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.coal-samples > div {
    transition: transform 0.3s ease;
}

.coal-samples:hover > div {
    transform: scale(1.1);
}

/* Circular product images */
.product-image-circle {
    border-radius: 50%;
    overflow: hidden;
    aspect-ratio: 1;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 4px solid #f3f4f6;
    transition: all 0.3s ease;
}

.product-image-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    border-color: #0093cd;
}

.product-image-circle .ratio-content {
    border-radius: 50%;
}

/* Section transitions */
section {
    position: relative;
    overflow: hidden;
}

/* Custom button styles */
.btn-primary {
    background: linear-gradient(135deg, #8e531d, #774418);
    box-shadow: 0 4px 15px rgba(142, 83, 29, 0.3);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(142, 83, 29, 0.4);
    transform: translateY(-2px);
}

/* Navigation enhancements */
nav {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

/* Coal texture pattern */
.coal-texture {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0,0,0,0.8) 2px, transparent 2px),
        radial-gradient(circle at 80% 50%, rgba(0,0,0,0.6) 1px, transparent 1px),
        radial-gradient(circle at 40% 20%, rgba(0,0,0,0.7) 1.5px, transparent 1.5px),
        radial-gradient(circle at 60% 80%, rgba(0,0,0,0.5) 1px, transparent 1px);
    background-size: 30px 30px, 25px 25px, 35px 35px, 20px 20px;
}

/* Parallax effect for hero */
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Loading animation for images */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s infinite;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .hero-section {
        background-attachment: scroll;
    }
    
    .hero-section h1 {
        font-size: 3rem;
    }
    
    .coal-samples {
        transform: scale(0.8);
    }
}

/* Dark theme variations */
@media (prefers-color-scheme: dark) {
    .bg-gray-50 {
        background-color: #1a1a1a;
    }
    
    .text-gray-800 {
        color: #e5e5e5;
    }
    
    .text-gray-600 {
        color: #a1a1a1;
    }
}

/* Accessibility enhancements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .parallax {
        background-attachment: scroll;
    }
}

/* Focus states for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid #0093cd;
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #0093cd;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #067bb0;
}

/* Print styles */
@media print {
    .hero-section {
        background: none;
        color: black;
    }
    
    /* Make primary buttons readable on print */
    .bg-\[\#8e531d\] {
        background: white !important;
        color: black !important;
        border: 1px solid black;
    }
    
    nav, footer {
        display: none;
    }
}

/* WhatsApp Popup */
#whatsapp-popup {
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out, transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    transform: scale(0);
}

#whatsapp-popup.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

/* Carousel Styles */
.carousel-container {
    position: relative;
    width: 100%;
}

.carousel-track {
    display: flex;
}

.carousel-slide {
    flex: 0 0 100%;
}

.carousel-btn {
    z-index: 10;
}

.carousel-btn:hover {
    transform: translateY(-50%) scale(1.1);
}

.carousel-dot {
    cursor: pointer;
}

.carousel-dot.active {
    background-color: #0093cd;
}

.carousel-dot:hover {
    background-color: #0093cd;
    opacity: 0.7;
}