/* Premium Nature & Adventure Design System */
:root {
    --primary: #1b5e20; /* Deep forest green */
    --primary-light: #4c8c4a;
    --primary-dark: #003300;
    --secondary: #0288d1; /* Fresh water blue */
    --accent: #ff8f00; /* Sunset orange/gold */
    --accent-hover: #e65100;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-main: #f8fafc;
    --bg-alt: #ffffff;
    --bg-dark: #111827;
    --white: #ffffff;
    --border: #e2e8f0;
    
    /* Shadows & Glows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 40px -5px rgba(0,0,0,0.15);
    --glow-primary: 0 0 20px rgba(27, 94, 32, 0.4);
    --glow-accent: 0 0 20px rgba(255, 143, 0, 0.5);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: 1px solid rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(at 0% 0%, rgba(27, 94, 32, 0.03) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(2, 136, 209, 0.03) 0px, transparent 50%);
    background-attachment: fixed;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    line-height: 1.2;
    color: var(--text-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Animations (Scroll Reveal) */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-left.active, .reveal-right.active { transform: translateX(0); }

/* Header Glassmorphism */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: var(--glass-border);
    position: fixed;
    top: 0; width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--glass-shadow);
    transition: var(--transition-normal);
}
header.scrolled { padding: 0.5rem 0; }
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo svg { color: var(--accent); }

/* Advanced Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-pill);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}
.btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: translateX(-100%);
    transition: 0.6s;
    z-index: -1;
}
.btn:hover::before { transform: translateX(100%); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    box-shadow: var(--glow-primary);
}
.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 25px rgba(27, 94, 32, 0.4);
}
.btn-accent {
    background: linear-gradient(135deg, var(--accent), #ffca28);
    color: var(--primary-dark);
    box-shadow: var(--glow-accent);
}
.btn-accent:hover {
    transform: translateY(-3px) scale(1.02);
}

/* Dynamic Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 6rem;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: -2;
    transform: scale(1.1);
    animation: slowZoom 20s ease-in-out infinite alternate;
}
@keyframes slowZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.7) 50%, transparent 100%);
    z-index: -1;
}
.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}
@media(min-width: 992px) {
    .hero-container { grid-template-columns: 1fr 1fr; }
}
.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}
.hero-content h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-content p {
    font-size: 1.25rem;
    color: #4b5563;
    margin-bottom: 2.5rem;
    max-width: 500px;
}
.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(2, 136, 209, 0.1);
    color: var(--secondary);
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(2, 136, 209, 0.2);
}
.hero-image-wrapper {
    position: relative;
    perspective: 1000px;
}
.hero-bottle {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 30px 40px rgba(0,0,0,0.3));
    animation: float 6s ease-in-out infinite;
    transform-style: preserve-3d;
}
@keyframes float {
    0% { transform: translateY(0px) rotateZ(0deg); }
    50% { transform: translateY(-20px) rotateZ(2deg); }
    100% { transform: translateY(0px) rotateZ(0deg); }
}

/* Sections General */
section { padding: 6rem 0; position: relative; }
.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    color: var(--primary-dark);
}
.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 4rem;
}

/* Problem Section - Dark Mode */
.problem-section {
    background: var(--bg-dark);
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.problem-section .section-title { color: var(--white); }
.problem-section .section-subtitle { color: #9ca3af; }
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}
.problem-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}
.problem-card:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.1);
    border-color: var(--accent);
}
.problem-icon {
    width: 60px; height: 60px;
    background: rgba(255,143,0,0.2);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* How It Works (Overlapping Layout) */
.how-it-works { background: var(--bg-alt); }
.split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}
@media(min-width: 992px) {
    .split-layout { grid-template-columns: 1fr 1fr; }
}
.image-stack {
    position: relative;
    height: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.image-stack img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}
.image-stack:hover img { transform: scale(1.05); }

/* Features/Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.benefit-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--primary);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}
.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.benefit-card::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 150px; height: 150px;
    background: radial-gradient(circle, rgba(46,125,50,0.05) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(50%, -50%);
}

/* Enhanced Gallery */
.gallery-section {
    background: var(--bg-main);
    padding: 8rem 0;
}
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
}
.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 400px;
}
.gallery-item img.bg {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}
.gallery-item:hover img.bg { transform: scale(1.1); }
.gallery-item.large { grid-column: span 12; height: 500px; }
.gallery-item.medium { grid-column: span 12; }
@media(min-width: 768px) {
    .gallery-item.medium { grid-column: span 6; }
}
.product-overlay {
    position: absolute;
    bottom: -20px;
    right: 20px;
    width: 120px;
    filter: drop-shadow(0 20px 25px rgba(0,0,0,0.4));
    transition: var(--transition-normal);
}
.gallery-item:hover .product-overlay {
    transform: translateY(-10px) scale(1.05);
}
.gallery-caption {
    position: absolute;
    bottom: 0; left: 0; width: 100%;
    padding: 3rem 1.5rem 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition-normal);
}
.gallery-item:hover .gallery-caption {
    transform: translateY(0);
    opacity: 1;
}

/* Call to Action Banner */
.cta-banner {
    margin: 4rem 0;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
    box-shadow: var(--glow-primary);
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: rotateBg 20s linear infinite;
}
@keyframes rotateBg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
footer {
    background: var(--bg-dark);
    color: #9ca3af;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    color: var(--white);
    margin-bottom: 1rem;
    display: block;
    text-decoration: none;
}
.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    display: block;
    margin-bottom: 0.8rem;
    transition: var(--transition-fast);
}
.footer-links a:hover {
    color: var(--accent);
    transform: translateX(5px);
}
.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
}

/* Accordion FAQ */
.faq-item {
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.faq-question {
    padding: 1.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    color: var(--text-light);
}
.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}
.faq-item.active .faq-question { color: var(--accent); }