:root {
    --color-bg: #F8F9FA;
    --color-surface: #FFFFFF;
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #555555;
    --color-primary: #2C3E50;
    /* Deep architectural blue */
    --color-primary-hover: #1e2b38;
    --color-accent: #3498db;
    /* Brighter accent for focus */
    --color-border: #E0E0E0;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Navbar */
.navbar {
    padding: var(--spacing-sm) 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    font-family: var(--font-body);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: white;
    border-color: var(--color-primary);
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: #e3f2fd;
    color: #1565c0;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 540px;
}

/* Signup Form */
.signup-form {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    max-width: 500px;
}

.signup-form input {
    flex: 1;
    min-width: 250px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.2s;
}

.signup-form input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.1);
}

.form-feedback {
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    min-height: 1.4em;
}

.form-feedback.success {
    color: #27ae60;
}

.form-feedback.error {
    color: #c0392b;
}

/* Hero Visual */
.hero-image-container {
    width: 100%;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: white;
    /* Fallback */
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    /* transition: transform 0.5s ease; */
    /* Optional interaction */
}

/* Optional: Slight hover effect
.hero-image-container:hover .hero-image {
    transform: scale(1.02);
}
*/

/* Features */
.features {
    padding: var(--spacing-xl) 0;
    background-color: white;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

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

.feature-card {
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background-color: white;
}

.icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.feature-card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--color-text-secondary);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background-color: #f1f4f6;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.cta-section .signup-form {
    margin: 0 auto;
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-logo {
    font-weight: 700;
    font-size: 1.25rem;
    font-family: var(--font-heading);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    margin-left: var(--spacing-md);
    font-size: 0.875rem;
}

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

.copyright {
    text-align: center;
    color: #888;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .signup-form {
        margin: 0 auto;
        justify-content: center;
    }

    .signup-form input {
        width: 100%;
        min-width: unset;
    }

    .signup-form button {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        justify-content: center;
        text-align: center;
    }

    .footer-links {
        margin-top: var(--spacing-sm);
    }

    .footer-links a {
        margin: 0 var(--spacing-xs);
    }
}