:root {
    /* Brand Colors */
    --msp-brand-yellow: #F2C94C;
    --msp-brand-mint: #7EE6C3;
    --msp-brand-blue: #1B2A41;
    
    /* Dark Mode Colors */
    --msp-dark-bg: #0B0F14;
    --msp-dark-text: #F5F7FA;
    --msp-dark-border: rgba(245, 247, 250, 0.06);
    
    /* Light Mode Colors */
    --msp-light-bg: #FFFFFF;
    --msp-light-text: #0B1220;
    --msp-light-border: #E5E7EB;
    
    /* Typography */
    --msp-font-heading: Georgia, "Times New Roman", serif;
    --msp-font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    
    /* Spacing */
    --msp-space-xs: 0.5rem;
    --msp-space-sm: 1rem;
    --msp-space-md: 1.5rem;
    --msp-space-lg: 2rem;
    --msp-space-xl: 3rem;
    --msp-space-xxl: 4rem;
    
    /* Border Radius */
    --msp-radius-sm: 0.375rem;
    --msp-radius-md: 0.5rem;
    --msp-radius-lg: 0.75rem;
    --msp-radius-xl: 1rem;
}

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

html {
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--msp-font-body);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--msp-font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--msp-space-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 1.875rem);
}

p {
    margin-bottom: var(--msp-space-md);
    line-height: 1.7;
}

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

.container-narrow {
    max-width: 800px;
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--msp-font-body);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--msp-radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.button-primary {
    background-color: var(--msp-brand-yellow);
    color: var(--msp-dark-bg);
}

.button-primary:hover {
    background-color: #E8B215;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(242, 201, 76, 0.3);
}

.button-secondary {
    background-color: transparent;
    border-color: currentColor;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background-color 0.3s ease;
}

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

.site-logo .site-title {
    font-family: var(--msp-font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--msp-brand-yellow);
}

/* Navigation */
.nav-menu {
    display: flex;
    gap: var(--msp-space-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--msp-brand-yellow);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    padding: var(--msp-space-xxl) 0;
    text-align: center;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 4rem);
    margin-bottom: var(--msp-space-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--msp-space-xl);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--msp-space-lg);
    margin: var(--msp-space-xl) 0;
}

.feature-card {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--msp-radius-lg);
    padding: var(--msp-space-lg);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    background: rgba(242, 201, 76, 0.05);
    border-color: var(--msp-brand-yellow);
    transform: translateY(-8px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--msp-brand-yellow);
    transition: left 0.4s ease;
}

.feature-card:hover::before {
    left: 0;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--msp-space-md);
    display: inline-block;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    color: inherit;
    margin-bottom: var(--msp-space-sm);
    transition: color 0.3s ease;
}

.feature-card:hover h3 {
    color: var(--msp-brand-yellow);
}

/* How It Works Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--msp-space-xl);
    margin: var(--msp-space-xl) 0;
}

.step-item {
    text-align: center;
    padding: var(--msp-space-lg);
    position: relative;
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: var(--msp-brand-yellow);
    color: var(--msp-dark-bg);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--msp-space-md);
}

/* Reviews Section */
.reviews-section {
    padding: var(--msp-space-xxl) 0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--msp-space-lg);
    margin-top: var(--msp-space-xl);
}

.review-card {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--msp-radius-lg);
    padding: var(--msp-space-lg);
    transition: all 0.3s ease;
}

.review-card:hover {
    background: rgba(242, 201, 76, 0.05);
    border-color: var(--msp-brand-yellow);
}

.review-content {
    font-style: italic;
    margin-bottom: var(--msp-space-md);
    position: relative;
    padding-left: var(--msp-space-md);
}

.review-content::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 3rem;
    color: var(--msp-brand-yellow);
    opacity: 0.3;
}

.review-author {
    display: flex;
    align-items: center;
    gap: var(--msp-space-sm);
}

.review-author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--msp-brand-yellow);
    color: var(--msp-dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* FAQ Section */
.faq-section {
    padding: var(--msp-space-xxl) 0;
}

.faq-grid {
    max-width: 800px;
    margin: var(--msp-space-xl) auto;
}

.faq-item {
    border-bottom: 1px solid var(--msp-dark-border);
    padding: var(--msp-space-lg) 0;
    transition: all 0.3s ease;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--msp-brand-yellow);
}

.faq-answer {
    margin-top: var(--msp-space-md);
    display: none;
}

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

.faq-toggle {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

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

/* Footer */
.site-footer {
    padding: var(--msp-space-xl) 0 var(--msp-space-lg);
    border-top: 1px solid var(--msp-dark-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--msp-space-xl);
    margin-bottom: var(--msp-space-xl);
}

.footer-column h3 {
    font-size: 1.125rem;
    margin-bottom: var(--msp-space-md);
}

.footer-column ul {
    list-style: none;
    padding: 0;
}

.footer-column li {
    margin-bottom: var(--msp-space-xs);
}

.footer-column a {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-column a:hover {
    opacity: 1;
    color: var(--msp-brand-yellow);
}

.copyright {
    text-align: center;
    padding-top: var(--msp-space-lg);
    border-top: 1px solid var(--msp-dark-border);
    opacity: 0.7;
    font-size: 0.875rem;
}