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

:root {
    --primary-blue: #007AFF;
    --primary-purple: #5856D6;
    --primary-green: #34C759;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --text-dark: #1d1d1f;
    --text-light: #6e6e73;
    --bg-light: #f5f5f7;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--white);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.1;
}

.tagline {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 20px;
    opacity: 0.95;
}

.description {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--white);
    color: var(--gradient-end);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.btn-large {
    padding: 20px 40px;
    font-size: 1.2rem;
}

.apple-icon {
    width: 24px;
    height: 24px;
}

/* Phone Mockup */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: var(--text-dark);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    margin: 0 auto;
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 30px;
    background: var(--text-dark);
    border-radius: 0 0 20px 20px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-preview {
    text-align: center;
    padding: 40px;
}

.app-icon-img {
    width: 100px;
    height: 100px;
    border-radius: 12px;
    margin: 0 auto 20px;
    display: block;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.preview-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.app-preview h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.app-preview p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.icon-svg {
    width: 50px;
    height: 50px;
    margin: 0 auto;
}

/* Category Colors */
.feature-card[data-color="red"] .icon-svg { color: #FF3B30; }
.feature-card[data-color="orange"] .icon-svg { color: #FF9500; }
.feature-card[data-color="yellow"] .icon-svg { color: #FFCC00; }
.feature-card[data-color="green"] .icon-svg { color: #34C759; }
.feature-card[data-color="teal"] .icon-svg { color: #5AC8FA; }
.feature-card[data-color="blue"] .icon-svg { color: #007AFF; }
.feature-card[data-color="purple"] .icon-svg { color: #AF52DE; }
.feature-card[data-color="cyan"] .icon-svg { color: #55BEF0; }

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Special Features Section */
.special-features {
    padding: 100px 0;
    background: var(--white);
}

.special-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.special-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.special-card {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.special-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.special-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.special-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--white);
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.footer p {
    opacity: 0.7;
    margin-bottom: 10px;
}

.copyright {
    margin-top: 20px;
    font-size: 0.9rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .description {
        font-size: 1rem;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .features h2,
    .special-features h2,
    .cta-section h2 {
        font-size: 2rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0 80px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .btn {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .features,
    .special-features,
    .cta-section {
        padding: 60px 0;
    }
}