* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --secondary-color: #1d1d1f;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent-color: #0071e3;
    --background: #ffffff;
    --background-alt: #f5f5f7;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.contact-link,
.contact-link-nav {
    color: var(--accent-color);
    background: none;
    border: none;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
    font-family: inherit;
    text-decoration: none;
}

.contact-link:hover,
.contact-link-nav:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
}

.hero-content {
    max-width: 900px;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1.125rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 113, 227, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 113, 227, 0.4);
}

/* Features Section */
.features {
    padding: 8rem 2rem;
    background-color: var(--background);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
}

.feature {
    text-align: center;
    padding: 2rem;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-8px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
}

.feature h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 8rem 2rem;
    background-color: var(--background-alt);
}

.about-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.about h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

.about p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Contact Section */
.contact {
    padding: 8rem 2rem;
    background-color: var(--primary-color);
    color: white;
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.contact p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.email-container {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

.email {
    color: white;
    font-size: 1.5rem;
    font-weight: 500;
    user-select: all;
}

.copy-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.copy-button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 113, 227, 0.4);
}

.copy-button:active {
    transform: scale(0.95);
}

.copy-icon {
    display: block;
}

/* Support Page */
.support-hero {
    padding: 10rem 2rem 4rem;
    background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
    text-align: center;
}

.support-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -0.03em;
}

.support-content p {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.support-contact {
    padding: 6rem 2rem;
    background-color: var(--background);
}

.support-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.support-container h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.support-info {
    background-color: var(--background-alt);
    padding: 3rem;
    border-radius: 20px;
}

.support-info p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.support-info .email-container {
    background-color: rgba(0, 0, 0, 0.05);
    margin: 2rem 0;
}

.support-info .email {
    color: var(--primary-color);
}

.response-time {
    font-size: 1rem !important;
    font-style: italic;
    margin-top: 2rem !important;
}

/* FAQ Section */
.faq {
    padding: 6rem 2rem;
    background-color: var(--background-alt);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-container h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    text-align: center;
}

.faq-item {
    background-color: var(--background);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.faq-item h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.faq-item p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-item a {
    color: var(--accent-color);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.faq-item a:hover {
    opacity: 0.7;
}

/* Legal Pages (Privacy & Terms) */
.legal-hero {
    padding: 10rem 2rem 4rem;
    background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
    text-align: center;
}

.legal-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -0.03em;
}

.last-updated {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

.legal-section {
    padding: 4rem 2rem 8rem;
    background-color: var(--background);
}

.legal-container {
    max-width: 900px;
    margin: 0 auto;
}

.legal-container h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

.legal-container p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.legal-container ul {
    margin: 1.5rem 0 1.5rem 2rem;
    color: var(--text-secondary);
}

.legal-container li {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.contact-info {
    background-color: var(--background-alt);
    padding: 2rem;
    border-radius: 15px;
    margin-top: 2rem;
}

/* Footer */
.footer {
    padding: 2rem;
    background-color: var(--background-alt);
    text-align: center;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

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

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(150px);
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast svg {
    color: #34c759;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero,
    .support-hero,
    .legal-hero {
        padding: 6rem 1rem 3rem;
    }

    .features,
    .about,
    .contact,
    .support-contact,
    .faq,
    .legal-section {
        padding: 4rem 1rem;
    }

    .features-container {
        gap: 3rem;
    }

    .email-container {
        flex-direction: column;
        gap: 0.75rem;
    }

    .email {
        font-size: 1.125rem;
    }

    .support-info {
        padding: 2rem 1.5rem;
    }

    .faq-item {
        padding: 1.5rem;
    }

    .footer-links {
        gap: 1rem;
    }
}