/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #6366f1;
    min-height: 100vh;
    line-height: 1.6;
    color: white;
}

.app-container {
    width: 100%;
    max-width: 1400px;
    margin: 10px auto;
    background: #1a1a1a;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

/* Modern dark navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    color: white;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-center {
    display: flex;
    gap: 4px;
    list-style: none;
    background: rgba(255, 255, 255, 0.05);
    padding: 8px 12px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-center li {
    transition: all 0.3s ease;
}

.nav-center a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-center a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.nav-right {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-right .btn-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    padding: 12px 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-right .btn-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.nav-right .btn-primary {
    background: #6366f1;
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.nav-right .btn-primary:hover {
    background: #5855eb;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

/* Hero Section - Full Screen */
.hero-section {
    min-height: calc(100vh - 100px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 60px 40px;
    position: relative;
    background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

.hero-section h1 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -2px;
    color: white;
    max-width: 1000px;
}

.hero-section .highlight {
    color: #fbbf24;
    position: relative;
}

.hero-section .highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 4px;
    background: #fbbf24;
    border-radius: 2px;
}

.hero-section p {
    font-size: 22px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.5;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 48px;
}

.btn-primary-cta {
    background: #6366f1;
    color: white;
    padding: 18px 36px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.btn-primary-cta:hover {
    background: #5855eb;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.btn-secondary-cta {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    padding: 18px 36px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary-cta:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* Benefits Section */
.benefits-section {
    padding: 100px 40px;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.benefits-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.benefit-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.benefit-icon {
    font-size: 48px;
    margin-bottom: 24px;
    display: block;
}

.benefit-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
}

.benefit-card p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

/* Preview Section */
.preview-section {
    padding: 100px 40px;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.preview-container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.preview-section h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 24px;
    color: white;
}

.preview-section p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.preview-mockup {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    margin: 60px auto;
    max-width: 800px;
}

.calendar-preview {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin: 20px 0;
}

.calendar-day {
    aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.calendar-day.available {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.calendar-day.occupied {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.calendar-day:hover {
    transform: scale(1.05);
}

/* Final CTA Section */
.final-cta-section {
    padding: 100px 40px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.final-cta-section h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 24px;
    color: white;
}

.final-cta-section p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-final-cta {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 20px 48px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
    display: inline-block;
}

.btn-final-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.5);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-container {
        border-radius: 0;
        max-width: 100%;
    }
    
    .hero-section h1 {
        font-size: 52px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }
    
    .nav-center {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-right {
        order: 2;
    }
    
    .hero-section {
        min-height: 80vh;
        padding: 40px 20px;
    }
    
    .hero-section h1 {
        font-size: 36px;
        letter-spacing: -1px;
    }
    
    .hero-section p {
        font-size: 18px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .btn-primary-cta,
    .btn-secondary-cta {
        width: 100%;
        max-width: 280px;
        padding: 16px 32px;
        font-size: 16px;
    }
    
    .benefits-section,
    .preview-section,
    .final-cta-section {
        padding: 60px 20px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .preview-section h2,
    .final-cta-section h2 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 28px;
    }
    
    .calendar-preview {
        grid-template-columns: repeat(7, 1fr);
        gap: 4px;
    }
    
    .calendar-day {
        font-size: 12px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-section,
.benefits-section,
.preview-section,
.final-cta-section {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Focus states */
.btn-primary-cta:focus,
.btn-secondary-cta:focus,
.btn-final-cta:focus {
    outline: 2px solid #fbbf24;
    outline-offset: 2px;
}

.logo:hover {
    transform: scale(1.02);
    transition: transform 0.3s ease;
}

.snowflake {
    position: fixed;
    top: -10px;
    color: white;
    font-size: 1em;
    user-select: none;
    z-index: 9999;
    animation-name: fall;
    animation-timing-function: linear;
  }

  @keyframes fall {
    0% {
      transform: translateY(0);
      opacity: 1;
    }
    100% {
      transform: translateY(100vh);
      opacity: 0;
    }
  }