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

:root {
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-background: #ffffff;
    --color-background-alt: #f9fafb;
    --color-border: #e5e7eb;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero Section */
.hero {
    padding: 3rem 0 2rem;
    text-align: center;
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 50%, #e0e7ff 100%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 1rem;
    font-weight: 500;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 500px;
    margin: 0 auto 1.5rem;
}

/* Signup Form */
.signup-form {
    max-width: 400px;
    margin: 0 auto;
}

.coming-soon {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 0.025em;
}

.email-form {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.email-form input[type="email"] {
    flex: 1;
    min-width: 220px;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    outline: none;
    transition: border-color 0.2s;
}

.email-form input[type="email"]:focus {
    border-color: var(--color-primary);
}

.email-form button {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background-color: var(--color-primary);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.email-form button:hover {
    background-color: var(--color-primary-dark);
}

.form-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-top: 0.75rem;
}

/* Features Section */
.features {
    padding: 2rem 0;
    background-color: var(--color-background);
}

.features h2 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.feature {
    text-align: center;
    padding: 0.75rem;
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: #ede9fe;
    color: var(--color-primary);
    border-radius: 0.75rem;
    margin-bottom: 0.5rem;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.feature p {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* Footer */
.footer {
    padding: 1rem 0;
    background-color: var(--color-background-alt);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* Responsive */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 2rem 0 1.5rem;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .tagline {
        font-size: 1.25rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .email-form {
        flex-direction: column;
    }

    .email-form input[type="email"],
    .email-form button {
        width: 100%;
    }

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

    .features h2 {
        font-size: 1.25rem;
    }
}