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

:root {
    --color-bg: #0a0a0b;
    --color-surface: #141416;
    --color-surface-elevated: #1c1c1f;
    --color-border: #2a2a2e;
    --color-text: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-accent: #22d3ee;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Gradient Background */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 100vh;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
                radial-gradient(ellipse 60% 40% at 80% 60%, rgba(34, 211, 238, 0.08), transparent);
    pointer-events: none;
    z-index: -1;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    color: var(--color-primary);
}

.logo-text {
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 4rem 0 6rem;
    min-height: calc(100vh - 100px);
}

.hero-content {
    max-width: 560px;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.cta-section {
    display: flex;
    gap: 1rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.75rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 580px;
    background: var(--color-surface);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5),
                0 0 0 1px var(--color-border);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.app-prompt {
    text-align: center;
    width: 100%;
}

.prompt-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.prompt-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
}

.prompt-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.prompt-question {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.25rem;
}

.prompt-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option {
    padding: 0.75rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
}

.option.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Features Section */
.features {
    padding: 6rem 0;
}

.features h2 {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3.5rem;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Notify Section */
.notify {
    padding: 4rem 0 8rem;
}

.notify-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 4rem;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.notify-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.notify-card > p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.notify-form {
    display: flex;
    gap: 0.75rem;
    max-width: 440px;
    margin: 0 auto 1rem;
}

.notify-form input {
    flex: 1;
    padding: 1rem 1.25rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text);
    font-size: 1rem;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.2s ease;
}

.notify-form input::placeholder {
    color: var(--color-text-muted);
}

.notify-form input:focus {
    border-color: var(--color-primary);
}

.notify-form button {
    padding: 1rem 1.75rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.3s ease;
}

.notify-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.privacy-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Footer */
footer {
    border-top: 1px solid var(--color-border);
    padding: 3rem 2rem 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto 2rem;
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-top: 1rem;
    max-width: 280px;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-content {
        max-width: 100%;
    }

    h1 {
        font-size: 2.75rem;
    }

    .cta-section {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 1.5rem;
    }

    main {
        padding: 0 1.5rem;
    }

    h1 {
        font-size: 2.25rem;
    }

    .hero-description {
        font-size: 1.05rem;
    }

    .phone-mockup {
        width: 240px;
        height: 500px;
    }

    .notify-card {
        padding: 2.5rem 1.5rem;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.875rem;
    }

    .features h2 {
        font-size: 1.75rem;
    }

    .notify-card h2 {
        font-size: 1.5rem;
    }
}