/* 
  NimbleDay Landing Page - Clean & SEO Friendly
  Colors: #F2F5FA (bg), #1F1F24 (text), #0A87FD (accent)
*/

:root {
    --bg-color: #F2F5FA;
    --text-color: #1F1F24;
    --text-secondary: #595E6B;
    --accent-color: #0A87FD;
    --card-bg: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

.highlight {
    color: var(--accent-color);
}

/* Navigation */
nav {
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    background: rgba(242, 245, 250, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 100;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    margin-right: 12px;
}

.nav-cta {
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-cta:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 6rem 2rem 0;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-text {
    max-width: 800px;
    margin-bottom: 4rem;
}

.hero-text p {
    margin: 0 auto 2.5rem;
    font-size: 1.25rem;
}

.hero-image-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* Device Mockups */
.phone-frame {
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.12);
    overflow: hidden;
    background: var(--card-bg);
    border: 8px solid #111;
}

.phone-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.shadow-left { box-shadow: -20px 30px 60px rgba(0,0,0,0.1); }
.shadow-right { box-shadow: 20px 30px 60px rgba(0,0,0,0.1); }

/* Social Proof */
.social-proof {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    margin-top: -100px;
    padding-top: 140px;
}

.social-proof p {
    margin: 0 auto;
    font-weight: 500;
}

/* Features */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.feature-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8rem;
    gap: 4rem;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-image {
    flex: 1;
    max-width: 350px;
}

.feature-list {
    list-style: none;
    font-size: 1.125rem;
    font-weight: 500;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

/* Pro Features Grid */
.pro-features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem 8rem;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 24px;
    text-align: left;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.card p {
    margin-bottom: 0;
}

/* Footer CTA */
footer {
    background: #111;
    color: white;
    text-align: center;
    padding: 6rem 2rem 2rem;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto 4rem;
}

.footer-content p {
    color: #888;
    margin: 0 auto 2.5rem;
}

.footer-icon {
    width: 80px;
    height: 80px;
    border-radius: 18px;
    margin-bottom: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    color: #666;
    font-size: 0.875rem;
}

.footer-links a {
    color: #888;
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .feature-row, .feature-row.reverse {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }
    
    .feature-list li {
        justify-content: center;
    }

    .feature-image {
        max-width: 300px;
        margin: 0 auto;
    }
}