/* 
  VoiceDoc Landing Page - Clean & iOS Native Feel
  Colors: #F2F2F7 (iOS grouped bg), #000000 (text), #5E5CE6 (iOS Indigo)
*/

:root {
    --bg-color: #F2F2F7;
    --text-color: #000000;
    --text-secondary: #8E8E93;
    --accent-color: #5E5CE6;
    --card-bg: #FFFFFF;
}

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

body {
    font-family: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.35rem;
    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: 1.25rem 2rem;
    position: sticky;
    top: 0;
    background: rgba(242, 242, 247, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.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: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.nav-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    margin-right: 10px;
}

.nav-cta {
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

.nav-cta:hover {
    opacity: 0.9;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 5rem 2rem 0;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-text {
    max-width: 800px;
    margin-bottom: 3.5rem;
}

.hero-text p {
    margin: 0 auto 2rem;
    font-size: 1.25rem;
    color: #3A3A3C;
}

.hero-image-container {
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
}

/* Device Mockups */
.phone-frame {
    border-radius: 44px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    background: var(--card-bg);
    border: 10px solid #1C1C1E;
}

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

.shadow-left { box-shadow: -15px 20px 40px rgba(0,0,0,0.08); }
.shadow-right { box-shadow: 15px 20px 40px rgba(0,0,0,0.08); }

/* Social Proof */
.social-proof {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--card-bg);
    margin-top: -100px;
    padding-top: 130px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.social-proof p {
    margin: 0 auto;
    font-weight: 500;
    color: #8E8E93;
}

/* Features */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.feature-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6rem;
    gap: 4rem;
}

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

.feature-text {
    flex: 1;
}

.feature-image {
    flex: 1;
    max-width: 320px;
}

.feature-list {
    list-style: none;
    font-size: 1.1rem;
    font-weight: 500;
}

.feature-list li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    color: #3A3A3C;
}

/* Pro Features Grid */
.pro-features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem 6rem;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    text-align: left;
    box-shadow: 0 4px 14px rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.02);
}

.card h3 {
    color: var(--text-color);
}

.card p {
    margin-bottom: 0;
    font-size: 1rem;
}

/* Footer CTA */
footer {
    background: #1C1C1E;
    color: #FFFFFF;
    text-align: center;
    padding: 5rem 2rem 3rem;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto 3.5rem;
}

.footer-content h2 {
    color: #FFFFFF;
}

.footer-content p {
    color: #AEAEB2;
    margin: 0 auto 2.5rem;
}

.footer-icon {
    width: 72px;
    height: 72px;
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    color: #636366;
    font-size: 0.875rem;
}

.footer-links a {
    color: #AEAEB2;
    text-decoration: none;
}

.footer-links a:hover {
    color: #FFFFFF;
}

/* 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: 280px;
        margin: 0 auto;
    }
}