/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --color-primary: #23C39A;
    --color-secondary: #0D3B59;
    --color-text: #4A4A4A;
    --color-text-light: #6B6B6B;
    --color-bg: #FDFDFB;
    --color-bg-alt: #F3F7F6;
    --color-white: #FFFFFF;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #23C39A 0%, #0D3B59 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(35, 195, 154, 0.1) 0%, rgba(13, 59, 89, 0.1) 100%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-secondary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    font-weight: 300;
    color: var(--color-text);
}

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

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

.btn-full {
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(253, 253, 251, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-img-footer {
    height: 48px;
    filter: brightness(0) invert(1);
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.nav a:hover {
    color: var(--color-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-secondary);
    transition: var(--transition);
}

/* Mobile Menu Open State */
.nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    gap: var(--spacing-sm);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: var(--gradient-subtle);
    border-radius: 0 0 0 50%;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(35, 195, 154, 0.1);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.hero-text h1 {
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.125rem;
    max-width: 480px;
    margin-bottom: var(--spacing-lg);
}

.hero-ctas {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-mockup {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.mockup-desktop {
    background-color: var(--color-secondary);
    border-radius: var(--radius-lg);
    padding: 8px;
    box-shadow: var(--shadow-lg);
}

.mockup-desktop .mockup-screen {
    background-color: var(--color-white);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.mockup-header {
    height: 30px;
    background-color: var(--color-bg-alt);
    border-bottom: 1px solid #e5e5e5;
}

.mockup-content {
    display: flex;
    height: 200px;
}

.mockup-sidebar {
    width: 60px;
    background-color: var(--color-bg-alt);
    border-right: 1px solid #e5e5e5;
}

.mockup-main {
    flex: 1;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mockup-card {
    height: 50px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

.mockup-mobile {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 120px;
    background-color: var(--color-secondary);
    border-radius: var(--radius-lg);
    padding: 6px;
    box-shadow: var(--shadow-lg);
}

.mockup-mobile .mockup-screen {
    background-color: var(--color-white);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.mockup-mobile .mockup-header {
    height: 20px;
}

.mockup-list {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mockup-item {
    height: 25px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

/* ===== Benefits Section ===== */
.benefits {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.benefit-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.benefit-icon svg {
    width: 24px;
    height: 24px;
}

.icon-green {
    background-color: rgba(35, 195, 154, 0.1);
    color: var(--color-primary);
}

.icon-blue {
    background-color: rgba(13, 59, 89, 0.1);
    color: var(--color-secondary);
}

.benefit-card h3 {
    margin-bottom: var(--spacing-xs);
}

.benefit-card p {
    font-size: 0.875rem;
}

/* ===== How it Works Section ===== */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-alt);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.step {
    text-align: center;
    padding: var(--spacing-lg);
}

.step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.step h3 {
    margin-bottom: var(--spacing-xs);
}

.step p {
    font-size: 0.875rem;
}

/* ===== Trainer Focus Section ===== */
.trainer-focus {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.trainer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.trainer-text h2 {
    margin-bottom: var(--spacing-md);
}

.trainer-text p {
    margin-bottom: var(--spacing-sm);
}

.trainer-text .highlight {
    font-weight: 500;
    color: var(--color-primary);
}

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

.image-placeholder {
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-subtle);
    border-radius: var(--radius-xl);
}

.image-placeholder svg {
    width: 120px;
    height: 120px;
    color: var(--color-primary);
    opacity: 0.5;
}

/* ===== Testimonials Section ===== */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-alt);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial-text {
    font-size: 1rem;
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 0.875rem;
    color: var(--color-secondary);
}

.author-info span {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* ===== Pricing Section ===== */
.pricing {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.pricing-card {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 2px solid var(--color-primary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 1rem;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.pricing-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: var(--spacing-lg);
}

.currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.period {
    font-size: 1rem;
    color: var(--color-text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
}

.pricing-features svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
}

/* ===== FAQ Section ===== */
.faq {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-alt);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: none;
    border: none;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    color: var(--color-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--color-bg-alt);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-light);
    transition: var(--transition);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: 0.875rem;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
}

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

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.cta-content .btn-primary {
    background-color: var(--color-white);
    color: var(--color-secondary);
}

.cta-content .btn-primary:hover {
    background-color: var(--color-bg-alt);
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
    display: inline-block;
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-newsletter {
    text-align: right;
}

.footer-newsletter p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-form input {
    flex: 1;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.875rem;
}

.newsletter-form input:focus {
    outline: 2px solid var(--color-primary);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive Styles ===== */
@media (max-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-ctas {
        justify-content: center;
    }

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

    .trainer-visual {
        order: -1;
    }
}

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

    .header-content .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding-top: calc(70px + var(--spacing-xl));
    }

    .hero-bg {
        width: 100%;
        height: 50%;
        border-radius: 0 0 50% 50%;
    }

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

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

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

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

    .footer-links {
        justify-content: center;
    }

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

    .newsletter-form {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .hero-ctas .btn {
        width: 100%;
    }

    .mockup-mobile {
        right: 0;
        bottom: -20px;
    }

    .pricing-card {
        padding: var(--spacing-lg);
    }

    .image-placeholder {
        width: 200px;
        height: 200px;
    }

    .image-placeholder svg {
        width: 80px;
        height: 80px;
    }
}