/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: #1a1a1a;
    background: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Primary Colors */
:root {
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --secondary: #00D4FF;
    --accent: #FFD700;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --gray: #6b7280;
    --success: #10B981;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    background: white;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 999;
    width: 100%;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0066FF, #00D4FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-link:hover {
    color: #0066FF;
}

.cta-button {
    background: linear-gradient(135deg, #0066FF, #0052CC);
    color: white;
    padding: 0.75rem 1.75rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 102, 255, 0.3);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: #1a1a1a;
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 100%);
    padding: 5rem 2rem;
    margin-top: 0;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-family: 'Sora', sans-serif;
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
    font-weight: 700;
}

.hero-content h1 span {
    background: linear-gradient(135deg, #0066FF, #00D4FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, #0066FF, #0052CC);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
    background: white;
    color: #0066FF;
    padding: 1rem 2.5rem;
    border-radius: 0.75rem;
    border: 2px solid #0066FF;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn-secondary:hover {
    background: #f0f4ff;
    transform: translateY(-3px);
}

.hero-benefits {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.benefit {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.benefit-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #00D4FF, #0066FF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 2px;
}

.benefit p {
    font-size: 0.95rem;
    color: #1a1a1a;
    margin: 0;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 102, 255, 0.15));
    animation: float 3s ease-in-out infinite;
}

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

/* ============================================
   WHAT IS POTENTSTREAM SECTION
   ============================================ */

.what-is {
    padding: 5rem 2rem;
    background: white;
}

.what-is-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.what-is-text p {
    color: #6b7280;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.what-is-image {
    display: flex;
    justify-content: center;
}

.what-is-image img {
    max-width: 100%;
    height: auto;
    border-radius: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.15);
}

/* ============================================
   HOW WORKS SECTION
   ============================================ */

.how-works {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
}

.how-works-content {
    max-width: 1200px;
    margin: 0 auto;
}

.how-works-content p {
    color: #6b7280;
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    text-align: justify;
}

/* ============================================
   INGREDIENTS SECTION
   ============================================ */

.ingredients {
    padding: 5rem 2rem;
    background: white;
}

.ingredients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    margin-top: 3rem;
}

.ingredient-card {
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
    border: 1px solid #e5e7eb;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.ingredient-card:hover {
    transform: translateY(-10px);
    border-color: #0066FF;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1);
}

.ingredient-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0066FF, #0052CC);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.ingredient-card h3 {
    font-size: 1.25rem;
    color: #1a1a1a;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.ingredient-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   BENEFITS SECTION
   ============================================ */

.benefits {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    margin-top: 3rem;
}

.benefit-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 1.25rem;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s;
}

.benefit-card:hover {
    transform: translateY(-10px);
    border-color: #0066FF;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.15);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.benefit-card h3 {
    font-size: 1.25rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 600;
}

.benefit-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features {
    padding: 5rem 2rem;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    margin-top: 3rem;
}

.feature-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid #e5e7eb;
    border-radius: 1rem;
    padding: 2.5rem;
    transition: all 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #0066FF;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    color: #1a1a1a;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.feature-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   PRICING SECTION
   ============================================ */

.pricing {
    padding: 5rem 2rem;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 1.25rem;
    padding: 2.5rem;
    position: relative;
    transition: all 0.3s;
    text-align: center;
}

.pricing-card.featured {
    border-color: #0066FF;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
    transform: scale(1.05);
}

.pricing-card:hover {
    border-color: #0066FF;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.15);
}

.pricing-badge {
    display: inline-block;
    background: linear-gradient(135deg, #0066FF, #0052CC);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.pricing-subtitle {
    color: #6b7280;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.pricing-image {
    margin: 2rem 0;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.pricing-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.pricing-currency {
    font-size: 1.25rem;
    color: #1a1a1a;
    font-weight: 600;
}

.pricing-amount {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0066FF, #00D4FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-period {
    color: #6b7280;
    font-size: 0.9rem;
}

.pricing-features {
    text-align: left;
    margin: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pricing-feature {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    color: #6b7280;
    font-size: 0.95rem;
}

.pricing-feature-icon {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #00D4FF, #0066FF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.testimonial-card {
    background: white;
    border-radius: 1.25rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1);
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.star {
    color: #FFD700;
    font-size: 1.125rem;
}

.testimonial-text {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.author-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #0066FF;
}

.author-info h4 {
    color: #1a1a1a;
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0;
}

.author-info p {
    color: #6b7280;
    font-size: 0.85rem;
    margin: 0;
}

/* ============================================
   GUARANTEE SECTION
   ============================================ */

.guarantee {
    padding: 5rem 2rem;
    background: white;
}

.guarantee-container {
    max-width: 1200px;
    margin: 0 auto;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
    border: 2px solid #0066FF;
    border-radius: 2rem;
    padding: 3rem;
    text-align: center;
}

.guarantee-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.guarantee-container h2 {
    font-family: 'Sora', sans-serif;
    font-size: 2rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 700;
}

.guarantee-text {
    color: #6b7280;
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-final {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
    color: white;
    text-align: center;
}

.cta-final-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-final h2 {
    font-family: 'Sora', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.cta-final p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn-cta-final {
    background: white;
    color: #0066FF;
    padding: 1.25rem 3rem;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.125rem;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    text-decoration: none;
}

.btn-cta-final:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: #1a1a1a;
    color: white;
    padding: 3rem 2rem 1.5rem;
    text-align: center;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 2rem;
    text-align: left;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-disclaimer {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto 1rem;
}

.footer-copyright {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   CONTAINER HELPER
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-family: 'Sora', sans-serif;
    font-size: 2.5rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-header p {
    font-size: 1.125rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   RESPONSIVE DESIGN - TABLET (768px)
   ============================================ */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .what-is-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-benefits {
        flex-direction: column;
        gap: 1rem;
    }
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE (480px)
   ============================================ */

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .nav-container {
        padding: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .cta-final h2 {
        font-size: 1.75rem;
    }

    .what-is {
        padding: 3rem 1rem;
    }

    .how-works {
        padding: 3rem 1rem;
    }

    .ingredients {
        padding: 3rem 1rem;
    }

    .ingredients-grid {
        grid-template-columns: 1fr;
    }

    .benefits {
        padding: 3rem 1rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .features {
        padding: 3rem 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pricing {
        padding: 3rem 1rem;
    }

    .testimonials {
        padding: 3rem 1rem;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .guarantee {
        padding: 3rem 1rem;
    }

    .cta-final {
        padding: 3rem 1rem;
    }

    footer {
        padding: 2rem 1rem 1rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .what-is-text p {
        font-size: 0.9rem;
    }

    .how-works-content p {
        font-size: 0.95rem;
    }

    .ingredient-card p {
        font-size: 0.85rem;
    }

    .benefit-card p {
        font-size: 0.85rem;
    }
}