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

:root {
    --color-primary: #0071E3;
    --color-primary-hover: #0077ED;
    --color-secondary: #30D158;
    --color-text: #1D1D1F;
    --color-text-secondary: #86868B;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F5F5F7;
    --color-border: #D2D2D7;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --transition: cubic-bezier(0.28, 0.11, 0.32, 1);
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.47059;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 21px;
    font-weight: 600;
    letter-spacing: -0.015em;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.3s var(--transition);
}

.nav-links a:hover {
    opacity: 0.7;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 980px;
    font-size: 17px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.3s var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: scale(1.02);
}

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

.btn-secondary:hover {
    background: rgba(0, 113, 227, 0.05);
}

.btn-large {
    padding: 16px 32px;
    font-size: 19px;
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #F5F5F7 0%, #FFFFFF 100%);
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 80px;
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.015em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(90deg, #0071E3 0%, #30D158 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 28px;
    line-height: 1.42857;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
}

.hero-note {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.hero-image {
    margin-top: 80px;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 320px;
    height: 650px;
    background: #1D1D1F;
    border-radius: 48px;
    padding: 12px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.25);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background: #1D1D1F;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 40px;
    overflow: hidden;
}

.app-preview {
    padding: 60px 24px 24px;
}

.preview-header {
    margin-bottom: 24px;
}

.preview-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.preview-date {
    font-size: 17px;
    color: var(--color-text-secondary);
}

.preview-calendar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.calendar-day {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    background: #F5F5F7;
    color: var(--color-text-secondary);
}

.calendar-day.available {
    background: rgba(0, 113, 227, 0.1);
    color: var(--color-primary);
}

.calendar-day.best {
    background: var(--color-primary);
    color: white;
}

.status-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(48, 209, 88, 0.1);
    color: var(--color-secondary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

/* Social Proof */
.social-proof {
    padding: 40px 0;
    background: white;
}

.proof-text {
    text-align: center;
    font-size: 19px;
    color: var(--color-text-secondary);
}

/* Features Section */
.features {
    padding: 120px 0;
    background: white;
}

.section-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.07143;
    letter-spacing: -0.015em;
    text-align: center;
    margin-bottom: 24px;
}

.section-subtitle {
    font-size: 24px;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 80px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 80px;
}

.feature-card {
    text-align: center;
}

.feature-icon {
    font-size: 56px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.47059;
}

/* Pricing Section */
.pricing {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 80px;
}

.pricing-card {
    background: white;
    border-radius: 24px;
    padding: 40px;
    position: relative;
    border: 1px solid var(--color-border);
    transition: all 0.3s var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card-featured {
    border: 2px solid var(--color-primary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-currency {
    font-size: 32px;
    font-weight: 600;
}

.price-amount {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -0.015em;
}

.price-period {
    font-size: 19px;
    color: var(--color-text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 17px;
    color: var(--color-text);
}

/* Enterprise Section */
.enterprise {
    padding: 120px 0;
    background: white;
}

.enterprise-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.enterprise-text h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.08333;
    letter-spacing: -0.015em;
    margin-bottom: 24px;
}

.enterprise-text p {
    font-size: 21px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.enterprise-features {
    list-style: none;
    margin-bottom: 40px;
}

.enterprise-features li {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    font-size: 19px;
}

.hierarchy-diagram {
    background: var(--color-bg-secondary);
    border-radius: 24px;
    padding: 40px;
}

.hierarchy-level {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
}

.hierarchy-node {
    background: white;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 17px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.hierarchy-node.hq {
    background: var(--color-primary);
    color: white;
}

.hierarchy-node.small {
    padding: 12px 16px;
    font-size: 14px;
}

/* Download Section */
.download {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.download-content {
    text-align: center;
}

.download-content h2 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 24px;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 24px;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 32px;
    background: black;
    color: white;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s var(--transition);
}

.store-button:hover {
    transform: scale(1.05);
}

.store-text {
    font-size: 12px;
    opacity: 0.8;
}

.store-name {
    font-size: 19px;
    font-weight: 600;
}

.download-note {
    font-size: 17px;
    color: var(--color-text-secondary);
}

.download-note a {
    color: var(--color-primary);
    text-decoration: none;
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-info p {
    font-size: 21px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 19px;
}

.contact-form {
    background: var(--color-bg-secondary);
    padding: 40px;
    border-radius: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    font-size: 17px;
    font-family: var(--font-sans);
    transition: border-color 0.3s var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-top: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.3s var(--transition);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* Responsive Design */
@media (max-width: 1068px) {
    .hero-title {
        font-size: 64px;
    }
    
    .section-title {
        font-size: 48px;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .enterprise-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 734px) {
    .nav-links {
        gap: 16px;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 21px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}