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

:root {
    --navy: #1a2b4a;
    --navy-light: #2d4067;
    --teal: #00b4d8;
    --teal-dark: #0096c7;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --gray-dark: #343a40;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--navy);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
}

.nav-cta {
    background: var(--teal);
    color: var(--white);
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    padding: 150px 0 100px;
    margin-top: 70px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-form-container {
    max-width: 700px;
    margin: 0 auto;
}

.signup-form .form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.signup-form input {
    flex: 1;
    min-width: 200px;
    padding: 1rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

.signup-form input:focus {
    outline: none;
    border-color: var(--teal);
}

.btn-primary {
    background: var(--teal);
    color: var(--white);
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--navy);
    color: var(--white);
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--navy-light);
}

.form-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--navy);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
}

/* Problem Section */
.problem {
    background: var(--gray-light);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.problem-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--navy);
}

.problem-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* How It Works */
.how-it-works {
    background: var(--white);
}

.steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--teal);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--navy);
}

.step-content p {
    color: var(--gray);
    line-height: 1.7;
}

.step-arrow {
    font-size: 2rem;
    color: var(--teal);
    flex-shrink: 0;
}

/* Features */
.features {
    background: var(--gray-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--navy);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Social Proof */
.social-proof {
    background: var(--white);
    padding: 60px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.testimonial {
    background: var(--gray-light);
    padding: 2.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--teal);
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--navy);
    margin-bottom: 1.5rem;
    font-style: italic;
    line-height: 1.7;
}

.testimonial-author {
    font-weight: 600;
    color: var(--gray);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    padding: 100px 0;
}

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

.cta-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
}

.cta-form {
    max-width: 700px;
    margin: 0 auto;
}

.cta-note {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 3rem;
}

.footer-brand {
    flex: 1;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--teal);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-disclaimer {
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
    margin: 20px;
    box-shadow: var(--shadow-lg);
}

.modal-icon {
    width: 80px;
    height: 80px;
    background: var(--teal);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 1.5rem;
}

.modal-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--navy);
}

.modal-content p {
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.7;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease-in 0.2s both;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease-in 0.4s both;
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .signup-form .form-row {
        flex-direction: column;
    }

    .signup-form input,
    .btn-primary {
        width: 100%;
    }

    .section-title {
        font-size: 2rem;
    }

    .steps {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 1rem 0;
    }

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

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

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

    .cta-title {
        font-size: 2rem;
    }

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

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 2rem;
    }

    section {
        padding: 60px 0;
    }

    .nav-cta {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}