/* ===================================
   GLUCOSHIELD AI - CSS
   Premium Landing Page Styles
   =================================== */

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

:root {
    --color-deep-blue: #1a365d;
    --color-cyan: #00d4ff;
    --color-green: #10b981;
    --color-orange: #ff6b35;
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-600: #4b5563;
    --color-gray-900: #111827;
    
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --container-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-body);
    color: var(--color-gray-900);
    line-height: 1.6;
    background: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-deep-blue);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn--primary {
    background: var(--color-orange);
    color: var(--color-white);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn--primary:hover {
    background: #e55a2a;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn--secondary {
    background: var(--color-deep-blue);
    color: var(--color-white);
}

.btn--secondary:hover {
    background: #152a4a;
    transform: translateY(-2px);
}

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

.btn--large {
    padding: 18px 40px;
    font-size: 18px;
}

.btn--block {
    width: 100%;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 16px 0;
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.header__logo-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--color-deep-blue);
}

.ai-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    color: var(--color-white);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 4px;
}

.btn--header {
    padding: 10px 24px;
    font-size: 14px;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 80px 0 120px;
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
}

.timer-banner {
    display: flex;
    align-items: center;
    gap: 16px;
    background: linear-gradient(135deg, var(--color-orange), #ff8c5a);
    color: var(--color-white);
    padding: 16px 24px;
    border-radius: var(--border-radius);
    margin-bottom: 40px;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

.timer-banner__icon {
    font-size: 32px;
}

.timer-banner__text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.timer-banner__label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
}

.timer-banner__discount {
    font-size: 16px;
    font-weight: 700;
}

.timer {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.timer__block {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 12px;
    border-radius: 8px;
    min-width: 60px;
}

.timer__number {
    font-size: 24px;
    font-weight: 800;
    font-family: var(--font-heading);
}

.timer__label {
    font-size: 10px;
    text-transform: uppercase;
    opacity: 0.9;
}

.timer__separator {
    font-size: 24px;
    font-weight: 800;
}

.hero__main {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero__title {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero__subtitle {
    font-size: 20px;
    color: var(--color-gray-600);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.trust-badge--ai {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(16, 185, 129, 0.1));
    border-color: var(--color-cyan);
    color: var(--color-cyan);
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
}

.hero__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero__stat-number {
    font-size: 32px;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--color-deep-blue);
}

.hero__stat-label {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* Hero Background */
.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}

.hero__bg-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.hero__bg-circle--1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}

.hero__bg-circle--2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -50px;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero__bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--color-gray-200) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-gray-200) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section__header {
    margin-bottom: 60px;
}

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

.section__label {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-cyan);
    margin-bottom: 12px;
}

.section__title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section__subtitle {
    font-size: 18px;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* Research Story */
.research-story {
    background: var(--color-gray-50);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.research-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.research-card__icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.research-card__title {
    font-size: 20px;
    margin-bottom: 12px;
}

.research-card__text {
    color: var(--color-gray-600);
}

/* Problem/Solution */
.problem-solution {
    background: linear-gradient(135deg, var(--color-deep-blue), #0d1e38);
    color: var(--color-white);
}

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

.ps-col {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.ps-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.ps-title {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--color-white);
}

.ps-list {
    list-style: none;
}

.ps-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
}

.ps-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    font-size: 24px;
}

.ps-col--problem li::before {
    color: var(--color-orange);
}

.ps-col--solution li::before {
    color: var(--color-green);
}

.ps-arrow {
    font-size: 48px;
    color: var(--color-cyan);
}

/* How It Works */
.how-it-works {
    background: var(--color-gray-50);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 30px;
}

.step {
    flex: 1;
    text-align: center;
}

.step__number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 800;
    font-family: var(--font-heading);
    margin: 0 auto 24px;
}

.step__title {
    font-size: 22px;
    margin-bottom: 12px;
}

.step__text {
    color: var(--color-gray-600);
}

.step__connector {
    width: 60px;
    height: 2px;
    background: var(--color-gray-300);
    margin-top: 40px;
    flex-shrink: 0;
}

/* Berberine Spotlight */
.berberine-spotlight {
    background: linear-gradient(135deg, #0d1e38, var(--color-deep-blue));
    color: var(--color-white);
}

.spotlight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.spotlight-content .section__label {
    color: var(--color-cyan);
}

.spotlight-content .section__title {
    color: var(--color-white);
}

.spotlight-text {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.9;
}

.spotlight-benefits {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.spotlight-benefit {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 16px;
}

.spotlight-benefit svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.spotlight-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.molecule-animation {
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Benefits */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.benefit-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px solid var(--color-gray-200);
    transition: var(--transition);
}

.benefit-card:hover {
    border-color: var(--color-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
}

.benefit-card__icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.benefit-card__title {
    font-size: 20px;
    margin-bottom: 12px;
}

.benefit-card__text {
    color: var(--color-gray-600);
}

/* AI Technology */
.ai-tech {
    background: var(--color-gray-50);
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.ai-circuit {
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.ai-text {
    font-size: 18px;
    line-height: 1.8;
    color: var(--color-gray-600);
    margin-bottom: 30px;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ai-feature {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-gray-200);
}

.ai-feature__icon {
    font-size: 32px;
    flex-shrink: 0;
}

.ai-feature__content h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.ai-feature__content p {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* Testimonials */
.testimonials {
    background: var(--color-gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.testimonial-card__rating {
    color: #fbbf24;
    font-size: 20px;
    margin-bottom: 16px;
}

.testimonial-card__text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-gray-600);
    margin-bottom: 20px;
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-card__avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-heading);
}

.testimonial-card__name {
    font-weight: 600;
    color: var(--color-deep-blue);
}

.testimonial-card__location {
    font-size: 13px;
    color: var(--color-gray-600);
}

/* Pricing */
.pricing {
    background: var(--color-gray-50);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.pricing-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    border: 2px solid var(--color-gray-200);
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card--popular {
    border-color: var(--color-orange);
    box-shadow: 0 10px 40px rgba(255, 107, 53, 0.2);
    transform: scale(1.05);
}

.pricing-card__badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-orange);
    color: var(--color-white);
    padding: 6px 20px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-card__header {
    margin-bottom: 24px;
}

.pricing-card__title {
    font-size: 28px;
    margin-bottom: 8px;
}

.pricing-card__subtitle {
    font-size: 14px;
    color: var(--color-gray-600);
}

.pricing-card__price {
    margin-bottom: 16px;
}

.pricing-card__price-old {
    font-size: 20px;
    color: var(--color-gray-600);
    text-decoration: line-through;
    display: block;
}

.pricing-card__price-new {
    font-size: 56px;
    font-weight: 900;
    font-family: var(--font-heading);
    color: var(--color-deep-blue);
    display: block;
    line-height: 1;
}

.pricing-card__price-label {
    font-size: 14px;
    color: var(--color-gray-600);
    display: block;
    margin-top: 8px;
}

.pricing-card__savings {
    background: var(--color-green);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.pricing-card__features {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
}

.pricing-card__features li {
    padding: 10px 0;
    font-size: 15px;
    color: var(--color-gray-600);
}

.pricing-trust {
    text-align: center;
    color: var(--color-gray-600);
    font-size: 14px;
}

/* Guarantee */
.guarantee {
    background: linear-gradient(135deg, var(--color-green), #059669);
    color: var(--color-white);
}

.guarantee-box {
    display: flex;
    align-items: center;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.guarantee-badge {
    position: relative;
    flex-shrink: 0;
}

.guarantee-badge__text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 16px;
    font-weight: 800;
    font-family: var(--font-heading);
}

.guarantee-title {
    font-size: 32px;
    margin-bottom: 16px;
    color: var(--color-white);
}

.guarantee-text {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 24px;
    opacity: 0.95;
}

.guarantee-content .btn {
    background: var(--color-white);
    color: var(--color-green);
}

.guarantee-content .btn:hover {
    background: var(--color-gray-50);
}

/* FAQ */
.faq {
    background: var(--color-gray-50);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 30px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-question h3 {
    font-size: 18px;
    margin: 0;
}

.faq-icon {
    font-size: 24px;
    font-weight: 300;
    color: var(--color-cyan);
}

.faq-answer {
    padding: 0 30px 24px;
    color: var(--color-gray-600);
    line-height: 1.7;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* Final CTA */
.final-cta {
    background: linear-gradient(135deg, var(--color-deep-blue), #0d1e38);
    color: var(--color-white);
}

.final-cta-box {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.final-cta__title {
    font-size: 42px;
    margin-bottom: 16px;
    color: var(--color-white);
}

.final-cta__text {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.final-cta__guarantee {
    margin-top: 24px;
    font-size: 14px;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: 60px 0 30px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
}

.footer-description {
    color: var(--color-gray-300);
    font-size: 14px;
}

.footer-title {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--color-white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-gray-300);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-cyan);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: var(--color-gray-300);
}

.footer-badges {
    display: flex;
    gap: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero__title {
        font-size: 42px;
    }
    
    .section__title {
        font-size: 36px;
    }
    
    .research-grid,
    .benefits-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps,
    .spotlight-grid,
    .ai-grid {
        flex-direction: column;
    }
    
    .step__connector {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero__title {
        font-size: 32px;
    }
    
    .section__title {
        font-size: 28px;
    }
    
    .research-grid,
    .benefits-grid,
    .testimonials-grid,
    .pricing-grid,
    .ps-grid {
        grid-template-columns: 1fr;
    }
    
    .ps-arrow {
        transform: rotate(90deg);
    }
    
    .timer-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .timer {
        margin-left: 0;
    }
    
    .hero__stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}