:root {
    --color-gray-900: #111827;
    --color-gray-800: #1f2937;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-300: #d1d5db;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-cyan-300: #93c5fd;
    --color-cyan-500: #3b82f6;
    --color-cyan-900: #1e3a8a;
    --color-white: #ffffff;
    --color-yellow-400: #facc15;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-gray-900);
    color: var(--color-gray-100);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

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

/* Header */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
    background-color: rgba(17, 24, 39, 0.5);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(147, 197, 253, 0.2);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-cyan-300);
}

.main-nav {
    display: none;
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
        align-items: center;
        gap: 1.5rem;
    }
}

.main-nav a {
    color: var(--color-gray-100);
    text-decoration: none;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--color-cyan-300);
}

.mobile-cta {
    display: block;
}

@media (min-width: 768px) {
    .mobile-cta {
        display: none;
    }
}


/* Buttons */
.button, .button-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: 1px solid transparent;
}

.button {
    background-color: var(--color-cyan-300);
    color: var(--color-gray-900);
}

.button:hover {
    background-color: var(--color-cyan-500);
}

.button-outline {
    border-color: var(--color-cyan-300);
    color: var(--color-cyan-300);
}

.button-outline:hover {
    background-color: var(--color-cyan-300);
    color: var(--color-gray-900);
}

.main-nav .button-outline {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.button-lg {
    padding: 0.875rem 2rem;
}


/* Hero Section */
.hero-section {
    position: relative;
    text-align: center;
    padding: 6rem 0;
    overflow: hidden;
}

.grid-background {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(to right, rgba(147, 197, 253, 0.1) 1px, transparent 1px), linear-gradient(to bottom, rgba(147, 197, 253, 0.1) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, white 0%, white 75%, transparent 100%);
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(to bottom, var(--color-gray-900), var(--color-gray-900), transparent);
}

.radial-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at center, rgba(147, 197, 253, 0.2), transparent, transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    background-image: linear-gradient(to right, var(--color-white), var(--color-cyan-300));
    margin-bottom: 1rem;
    animation: fade-in-down 0.8s ease-out forwards;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--color-gray-300);
    max-width: 48rem;
    margin: 0 auto 2rem;
    animation: fade-in-up 0.8s ease-out 0.2s forwards;
    opacity: 0;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    animation: fade-in-up 0.8s ease-out 0.4s forwards;
    opacity: 0;
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
    }
}

.cta-buttons .button-lg {
    transform: scale(1);
    transition: transform 0.2s;
}

.cta-buttons .button-lg:hover {
    transform: scale(1.05);
}

.cta-buttons .button-outline:hover {
    background-color: var(--color-gray-800);
    color: var(--color-white);
}

/* Sections */
.section {
    padding: 5rem 0;
}

.section-dark {
    background-color: rgba(17, 24, 39, 0.5);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    background-image: linear-gradient(to right, var(--color-white), var(--color-cyan-300));
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
    .hero-content h1 {
        font-size: 3.75rem;
    }
    .hero-content p {
        font-size: 1.25rem;
    }
}

/* How It Works Section */
.how-it-works-grid {
    position: relative;
    max-width: 56rem;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
}

.step-line {
    display: none;
}

@media (min-width: 768px) {
    .how-it-works-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .step-line {
        display: block;
        position: absolute;
        top: 2rem;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: rgba(147, 197, 253, 0.2);
        transform: translateY(-50%);
    }
}

.step {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 9999px;
    background-color: var(--color-gray-800);
    border: 2px solid rgba(147, 197, 253, 0.5);
    margin-bottom: 1rem;
    color: var(--color-cyan-300);
    font-weight: bold;
    font-size: 1.25rem;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}

.step p {
    color: var(--color-gray-400);
    margin: 0;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 64rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background-color: rgba(31, 41, 55, 0.5);
    border: 1px solid rgba(147, 197, 253, 0.2);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 10px 20px rgba(147, 197, 253, 0.1);
}

.feature-icon {
    margin: 0 auto 1rem;
    background-color: rgba(30, 58, 138, 0.5);
    padding: 0.75rem;
    border-radius: 9999px;
}

.feature-icon svg {
    width: 2rem;
    height: 2rem;
    color: var(--color-cyan-300);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}

.feature-card p {
    color: var(--color-gray-400);
    flex-grow: 1;
    margin: 0;
}

/* FAQ Section */
.faq-container {
    max-width: 48rem;
}

.accordion-item {
    background-color: rgba(31, 41, 55, 0.5);
    border: 1px solid rgba(147, 197, 253, 0.2);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.accordion-trigger {
    background: none;
    border: none;
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-white);
    cursor: pointer;
    text-align: left;
    transition: color 0.2s;
}

.accordion-trigger:hover {
    color: var(--color-cyan-300);
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content p {
    padding: 0 1.5rem 1.5rem;
    color: var(--color-gray-400);
    margin: 0;
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background-color: rgba(31, 41, 55, 0.5);
    border: 1px solid rgba(147, 197, 253, 0.2);
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.stars {
    display: flex;
    color: var(--color-yellow-400);
    margin-bottom: 1rem;
}
.stars svg {
    fill: currentColor;
}

.quote {
    font-style: italic;
    color: var(--color-gray-300);
    margin-bottom: 1rem;
}

.author .name {
    font-weight: 600;
    color: var(--color-white);
    margin: 0;
}

.author .role {
    font-size: 0.875rem;
    color: var(--color-cyan-300);
    margin: 0;
}

/* CTA Section */
.section-cta {
    background-color: var(--color-gray-900);
}

.cta-button {
    box-shadow: 0 4px 15px rgba(147, 197, 253, 0.2);
    transition: transform 0.3s;
}

.cta-button:hover {
    transform: scale(1.05);
}

.sub-text {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-top: 1rem;
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid rgba(147, 197, 253, 0.2);
}

.footer-content {
    text-align: center;
    color: var(--color-gray-500);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--color-gray-500);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-cyan-300);
}

/* Animations */
@keyframes fade-in-down {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Lucide Icons */
svg {
    width: 1rem;
    height: 1rem;
    stroke-width: 2;
}

.feature-icon svg {
    width: 2rem;
    height: 2rem;
}