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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #0f172a;
    background-color: #ffffff;
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #e2e8f0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
}

.nav {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav-link {
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #0f172a;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.25rem;
    background-color: #f1f5f9;
    padding: 0.25rem;
    border-radius: 0.375rem;
}

.lang-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    background-color: transparent;
    color: #64748b;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.lang-btn:hover {
    color: #0f172a;
}

.lang-btn.active {
    background-color: white;
    color: #0891b2;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.375rem;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: #0891b2;
    color: white;
}

.btn-primary:hover {
    background-color: #0e7490;
}

.btn-ghost {
    background-color: transparent;
    color: #475569;
}

.btn-ghost:hover {
    background-color: #f1f5f9;
    color: #0f172a;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid #cbd5e1;
    color: #475569;
}

.btn-outline:hover {
    background-color: #f8fafc;
}

.btn-outline-light {
    background-color: transparent;
    border: 2px solid #64748b;
    color: white;
}

.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.125rem;
}

.btn-ghost.hidden-mobile {
    display: none;
}

@media (min-width: 640px) {
    .btn-ghost.hidden-mobile {
        display: inline-flex;
    }
}

/* Hero Section */
.hero {
    padding-top: 8rem;
    padding-bottom: 5rem;
}

.hero-content {
    max-width: 64rem;
    margin: 0 auto;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #ecfeff;
    border: 1px solid #a5f3fc;
    border-radius: 9999px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #0e7490;
}

.badge svg {
    color: #0891b2;
}

.badge-light {
    background-color: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.2);
    color: #67e8f9;
}

.badge-light svg {
    color: #22d3ee;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #0f172a;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 4.5rem;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

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

/* Stats */
.stats {
    margin-top: 5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #0891b2 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .stat-value {
        font-size: 3rem;
    }
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: #f8fafc;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3rem;
    }
}

.section-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    max-width: 42rem;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@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: white;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 2rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    border-color: #a5f3fc;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    transition: transform 0.3s ease;
}

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

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: #64748b;
    line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
    padding: 5rem 0;
}

.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    position: relative;
}

@media (min-width: 1024px) {
    .steps {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step-line {
    display: none;
}

@media (min-width: 1024px) {
    .step-line {
        display: block;
        position: absolute;
        top: 5rem;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, #bae6fd 0%, #22d3ee 50%, #bae6fd 100%);
        z-index: 0;
    }
}

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

.step-number {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 10;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.step-description {
    color: #64748b;
    line-height: 1.7;
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.cta-content {
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 3rem;
    }
}

.cta-subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

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

/* Footer */
.footer {
    background-color: #0f172a;
    color: #cbd5e1;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-brand .logo-text {
    color: white;
}

.footer-description {
    font-size: 0.875rem;
    color: #94a3b8;
    line-height: 1.7;
    margin-top: 1rem;
}

.footer-title {
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

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

.footer-links a {
    font-size: 0.875rem;
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: #22d3ee;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #1e293b;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-copyright {
    font-size: 0.875rem;
    color: #94a3b8;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: #94a3b8;
    transition: color 0.2s ease;
}

.social-links a:hover {
    color: #22d3ee;
}