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

:root {
    --color-primary: #000000;
    --color-secondary: #1d1d1f;
    --color-accent: #0071e3;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-border: #d2d2d7;
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    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;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition-fast);
    padding: 8px 0;
}

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

.nav-cta {
    background-color: var(--color-accent);
    color: white !important;
    padding: 8px 16px !important;
    border-radius: 20px;
    font-weight: 500;
}

.nav-cta:hover {
    background-color: #0077ed;
    color: white !important;
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    text-align: center;
    background: linear-gradient(to bottom, #ffffff 0%, #f5f5f7 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    background-color: var(--color-accent);
    color: white;
    padding: 14px 32px;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.2);
}

.cta-button:hover {
    background-color: #0077ed;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 113, 227, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
    color: var(--color-primary);
}

.section-header p {
    font-size: 20px;
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.feature-card {
    background-color: var(--color-bg-secondary);
    padding: 40px 32px;
    border-radius: 16px;
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background-color: var(--color-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.feature-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.integration-badges {
    text-align: center;
    margin-top: 40px;
}

.integration-label {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.badges {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--color-primary);
    color: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background-color: var(--color-bg-secondary);
}

.steps {
    max-width: 900px;
    margin: 0 auto 40px;
}

.step {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.step-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-accent);
    min-width: 80px;
    letter-spacing: -2px;
}

.step-content h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.step-content p {
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.step-divider {
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    margin-left: 40px;
    margin-bottom: 20px;
}

.timeline-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--color-accent);
    color: white;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 15px;
    font-weight: 500;
    width: fit-content;
    margin: 0 auto;
}

.timeline-badge svg {
    width: 20px;
    height: 20px;
}

/* Signup Section */
.signup {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.signup-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.signup-content h2 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
    color: var(--color-primary);
}

.signup-content > p {
    font-size: 20px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    text-align: left;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-message {
    margin-top: 20px;
    padding: 16px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d1f4e0;
    color: #0f6938;
}

.form-message.error {
    display: block;
    background-color: #ffd2d2;
    color: #c41e3a;
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-primary);
}

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

.footer-column ul li {
    margin-bottom: 8px;
}

.footer-column ul li a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: 13px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 16px;
    }

    .nav-menu a {
        font-size: 13px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 36px;
        letter-spacing: -1px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .section-header p {
        font-size: 17px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .step {
        flex-direction: column;
        gap: 16px;
    }

    .step-number {
        font-size: 36px;
        min-width: auto;
    }

    .step-content h3 {
        font-size: 24px;
    }

    .step-content p {
        font-size: 16px;
    }

    .step-divider {
        display: none;
    }

    .signup-content h2 {
        font-size: 32px;
    }

    .signup-content > p {
        font-size: 17px;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .cta-button {
        padding: 12px 24px;
        font-size: 15px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .feature-card h3 {
        font-size: 20px;
    }
}