/* ===================================
   GLUCOSHIELD AI - WARM ORGANIC DESIGN
   Natural, Trustworthy, Clean
=================================== */

/* --- 1. Variables & Reset --- */
:root {
    /* WARM ORGANIC PALETTE */
    --color-teal: #009688;           /* Primary accent */
    --color-teal-light: rgba(0, 150, 136, 0.1);
    --color-coral: #E07A5F;          /* Warm coral - softer */
    --color-coral-light: rgba(224, 122, 95, 0.1);
    
    /* Warm backgrounds */
    --color-white: #FFFDFB;          /* Warm white */
    --color-cream: #FBF8F4;          /* Light cream */
    --color-beige: #F5F0E8;          /* Beige for sections */
    --color-beige-dark: #EDE4D8;     /* Darker beige */
    
    /* Warm text colors */
    --color-text: #3D3229;           /* Warm dark brown */
    --color-text-secondary: #6B5E52; /* Warm gray-brown */
    --color-text-light: #8A7D71;     /* Light brown */
    
    /* Borders */
    --color-border: #E8DFD4;         /* Warm border */
    --color-border-light: #F0E9E0;
    
    /* Status colors */
    --color-success: #4CAF50;
    --color-error: #D86050;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    /* Layout */
    --container-width: 1100px;
    --header-height: 72px;
    --border-radius: 10px;
    --border-radius-lg: 16px;

    /* Effects */
    --shadow-subtle: 0 2px 8px rgba(61, 50, 41, 0.06);
    --shadow-medium: 0 4px 16px rgba(61, 50, 41, 0.08);
    --transition: all 0.25s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.7;
    background: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.375rem; }

p { 
    margin-bottom: 1rem; 
    color: var(--color-text-secondary);
}

a { 
    text-decoration: none; 
    color: inherit; 
    transition: var(--transition); 
}

ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* Utility Classes */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.text-center { text-align: center; }

.text-gradient {
    color: var(--color-teal);
}

.section-spacing { 
    padding: 100px 0;
}

.bg-light { 
    background-color: var(--color-beige); 
}

/* --- 2. Components --- */

/* Buttons - Warm & Organic */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-teal);
    color: var(--color-white);
}

.btn-primary:hover {
    background: #00796B;
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--color-coral);
    color: var(--color-white);
}

.btn-accent:hover {
    background: #C96A52;
    transform: translateY(-1px);
}

.btn-outline {
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--color-teal);
    color: var(--color-teal);
    background: var(--color-teal-light);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

/* Header button - smaller */
.btn-sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn-block { width: 100%; }

/* Section Headers */
.section-header {
    margin-bottom: 60px;
    max-width: 600px;
}
.section-header.text-center { margin-left: auto; margin-right: auto; }

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-teal);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-top: 16px;
    line-height: 1.8;
}

/* Logo */
.logo-link {
    display: flex;
    align-items: center;
    gap: 0;
}

.logo-img {
    height: 88px;
    width: auto;
}

/* --- 3. Header - Clean & Minimal --- */
.main-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-white);
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border-light);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* --- 4. Hero Section - Warm Lifestyle --- */
.hero {
    padding: 60px 0 80px;
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 100%);
    overflow: hidden;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* Timer Banner - Warm style */
.timer-banner {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--color-coral-light);
    border: 1px solid var(--color-coral);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 24px;
    font-weight: 600;
    color: var(--color-coral);
    font-size: 0.85rem;
}

.timer {
    display: flex;
    gap: 4px;
    font-family: var(--font-heading);
}

.timer-box {
    background: var(--color-coral);
    color: var(--color-white);
    padding: 3px 7px;
    border-radius: 4px;
    min-width: 26px;
    text-align: center;
    font-size: 0.85rem;
}

.hero-title {
    font-size: 2.75rem;
    margin-bottom: 20px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 480px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border-light);
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}
.trust-badge svg { 
    width: 18px; 
    height: 18px; 
    color: var(--color-teal); 
}

/* Hero Image - Lifestyle photo */
.hero-image-container {
    position: relative;
    z-index: 1;
}

.hero-bottle {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
}

.hero-blob {
    display: none;
}

/* --- 5. Research Cards --- */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.research-card {
    background: var(--color-white);
    padding: 36px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.research-card:hover {
    border-color: var(--color-teal);
    box-shadow: var(--shadow-subtle);
}

.card-icon {
    width: 52px;
    height: 52px;
    background: var(--color-teal-light);
    color: var(--color-teal);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.card-icon svg { width: 26px; height: 26px; }

.research-card h3 {
    margin-bottom: 12px;
}

.research-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* --- 6. Comparison Section --- */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.comparison-col {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-border);
}

.comparison-col.problem { 
    border-color: var(--color-error);
    background: linear-gradient(180deg, rgba(216, 96, 80, 0.03) 0%, var(--color-white) 100%);
}

.comparison-col.solution { 
    border-color: var(--color-success);
    background: linear-gradient(180deg, rgba(76, 175, 80, 0.03) 0%, var(--color-white) 100%);
}

.comparison-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}

.comparison-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 1rem;
    color: var(--color-text);
}

.list-icon {
    flex-shrink: 0;
    margin-top: 4px;
}
.problem .list-icon { color: var(--color-error); }
.solution .list-icon { color: var(--color-success); }

/* --- 7. Steps Section --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 80px;
    right: 80px;
    height: 2px;
    background: var(--color-border);
    z-index: 0;
}

.step-card {
    background: var(--color-white);
    padding: 32px 24px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    position: relative;
    z-index: 1;
    border: 1px solid var(--color-border);
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--color-teal);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 4px solid var(--color-beige);
}

.step-card h3 {
    margin-bottom: 12px;
}

.step-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* --- 8. Benefits Section --- */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.benefit-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.benefit-card .card-icon {
    width: 44px; 
    height: 44px; 
    margin-bottom: 0;
    flex-shrink: 0;
}

.benefit-card h4 {
    margin-bottom: 8px;
}

.benefit-card p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* --- 9. Testimonials --- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: var(--color-white);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
}

.stars { 
    color: #F5A623;
    font-size: 0.9rem;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.quote-text { 
    margin-bottom: 20px; 
    color: var(--color-text);
    font-size: 0.95rem;
    line-height: 1.7;
}

.customer-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.customer-avatar {
    width: 40px; 
    height: 40px;
    background: var(--color-beige);
    color: var(--color-text-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.customer-details h4 { 
    font-size: 0.95rem; 
    margin-bottom: 2px; 
}
.customer-details span { 
    font-size: 0.8rem; 
    color: var(--color-text-light); 
}

/* --- 10. Pricing Section --- */
.pricing-section-header {
    text-align: center;
    margin-bottom: 40px;
}

.pricing-product-image {
    max-width: 500px;
    margin: 0 auto 50px;
}

.pricing-product-image img {
    width: 100%;
    border-radius: var(--border-radius-lg);
}

/* Anchor offset for sticky header */
#choose-package {
    scroll-margin-top: 100px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.pricing-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
}

.pricing-card.popular {
    border-color: var(--color-teal);
    border-width: 2px;
    box-shadow: var(--shadow-medium);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-teal);
    color: var(--color-white);
    padding: 6px 16px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
}

.price-header { margin-bottom: 20px; }
.package-name { 
    font-size: 1.25rem; 
    margin-bottom: 4px; 
}
.package-supply { 
    color: var(--color-text-secondary); 
    font-size: 0.9rem;
}

.price-display { margin-bottom: 24px; }
.price-old { 
    text-decoration: line-through; 
    color: var(--color-text-light); 
    font-size: 1rem; 
}
.price-current {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.1;
}
.price-per { 
    color: var(--color-text-secondary); 
    font-size: 0.85rem;
}

.pricing-features { 
    text-align: left; 
    margin: 28px 0; 
}
.pricing-features li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-text);
}
.pricing-features svg { 
    color: var(--color-success); 
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* --- 11. Guarantee Box --- */
.guarantee-box {
    background: var(--color-cream);
    padding: 48px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
}

.guarantee-box h3 {
    margin-bottom: 12px;
}

.guarantee-box p {
    margin-bottom: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* --- 12. FAQ Section --- */
.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    font-family: var(--font-heading);
    color: var(--color-text);
    transition: var(--transition);
}

.faq-question:hover { 
    color: var(--color-teal);
}

.faq-toggle-icon {
    font-size: 1.25rem;
    line-height: 1;
    color: var(--color-text-light);
    transition: transform 0.2s ease;
}

.faq-answer {
    padding: 0 24px 20px;
    color: var(--color-text-secondary);
    display: none;
    font-size: 0.95rem;
    line-height: 1.8;
}

.faq-item.active .faq-toggle-icon { 
    transform: rotate(45deg); 
    color: var(--color-teal);
}
.faq-item.active .faq-answer { display: block; }
.faq-item.active .faq-question { color: var(--color-teal); }

/* --- 13. Final CTA Section --- */
.final-cta {
    background: var(--color-cream);
}

/* --- 14. Footer --- */
.footer {
    background: var(--color-text);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer .logo-link { 
    margin-bottom: 20px;
}

.footer .logo-img {
    height: 80px;
    filter: brightness(0) invert(1);
}

.footer-links li { margin-bottom: 12px; }
.footer-links a { 
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.footer-links a:hover { color: var(--color-white); }

.footer h4 {
    color: var(--color-white);
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85rem;
}

/* --- 15. Checkout Page --- */
.checkout-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}

.secure-checkout-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-success);
    font-weight: 600;
    font-size: 0.9rem;
}

.checkout-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    padding: 48px 0;
}

.form-section {
    background: var(--color-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    font-size: 1.125rem;
}

.step-badge {
    background: var(--color-teal);
    color: var(--color-white);
    width: 28px; 
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.form-group { margin-bottom: 20px; }

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    transition: var(--transition);
    background: var(--color-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-teal);
}

.package-selector { display: grid; gap: 12px; }
.package-radio-label { display: block; cursor: pointer; position: relative; }
.package-radio-input { position: absolute; opacity: 0; }

.package-radio-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.package-radio-input:checked + .package-radio-card {
    border-color: var(--color-teal);
    background: var(--color-teal-light);
}

.radio-check-icon { 
    color: var(--color-teal); 
    opacity: 0; 
    transition: var(--transition); 
}
.package-radio-input:checked + .package-radio-card .radio-check-icon { 
    opacity: 1; 
}

.order-summary-sidebar {
    position: sticky;
    top: 100px;
}

.summary-card {
    background: var(--color-white);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.summary-row.total {
    font-weight: 700;
    color: var(--color-text);
    font-size: 1.15rem;
    border-top: 1px solid var(--color-border);
    padding-top: 14px;
    margin-top: 8px;
}

/* --- 16. Responsive --- */
@media (max-width: 1024px) {
    h1 { font-size: 2.25rem; }
    
    .hero { padding: 50px 0 60px; }
    .hero-grid { 
        grid-template-columns: 1fr; 
        text-align: center; 
        gap: 40px;
    }
    .hero-content { order: 1; }
    .hero-image-container { order: 0; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-actions, .trust-badges { justify-content: center; }
    .hero-bottle {
        max-width: 400px;
    }
    
    .comparison-grid { 
        grid-template-columns: 1fr; 
        gap: 20px; 
    }
    
    .steps-grid { grid-template-columns: 1fr; }
    .steps-grid::before { display: none; }

    .checkout-layout { grid-template-columns: 1fr; }
    .order-summary-sidebar { position: static; margin-bottom: 32px; }
    .checkout-layout { display: flex; flex-direction: column-reverse; }
}

@media (max-width: 768px) {
    :root { --header-height: 64px; }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    
    .section-spacing { padding: 64px 0; }
    .section-header { margin-bottom: 40px; }
    
    .hero-title { font-size: 2rem; }
    
    .logo-img { height: 70px; }
    .footer .logo-img { height: 60px; }
    
    .pricing-grid { gap: 20px; }
    .pricing-product-image { max-width: 350px; }
    
    .footer-grid { 
        grid-template-columns: 1fr; 
        gap: 40px; 
        text-align: center; 
    }
    .footer-bottom { 
        flex-direction: column; 
        gap: 16px; 
        text-align: center;
    }
    
    .guarantee-box { 
        padding: 32px;
    }
    
    .trust-badges {
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    
    h1 { font-size: 1.625rem; }
    
    .hero { padding: 30px 0 50px; }
    
    .btn-lg {
        padding: 14px 24px;
        font-size: 0.95rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .pricing-card {
        padding: 28px 20px;
    }
    
    .price-current {
        font-size: 2.5rem;
    }
    
    .timer-banner {
        font-size: 0.75rem;
        padding: 6px 12px;
    }
}