/* Hero Section */
.hero {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.15) 0%, transparent 70%),
        radial-gradient(circle at 80% 70%, rgba(244, 63, 94, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Use Case Section */
.use-case {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-secondary);
    position: relative;
}

.use-case__content {
    max-width: 800px;
    margin: 0 auto;
}

.use-case__description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.use-case__list {
    list-style: none;
    margin-top: var(--spacing-lg);
    display: grid;
    gap: var(--spacing-md);
    padding: 0;
}

.use-case__list li {
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.use-case__list li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: bold;
    flex-shrink: 0;
}

.use-case__list li:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    background: var(--bg-elevated);
}

.use-case__list li::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.use-case__list li:hover::after {
    opacity: 1;
}

/* Features Section */
.features {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-primary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 3rem;
    height: 0.25rem;
    background: var(--color-primary);
    border-radius: 0.125rem;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 1rem;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.feature:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.feature__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.feature__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature__text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* Download Section */
.download {
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    background: var(--bg-secondary);
}

.download__subtitle {
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
}

.download__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.button--app {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    min-width: 200px;
}

.button--app:hover {
    background: var(--bg-elevated);
    border-color: var(--color-primary);
}

.button__text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.button__small {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.button__large {
    font-size: 1.125rem;
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer__text {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2.5rem;
    }
    
    .features__grid {
        grid-template-columns: 1fr;
    }
    
    .download__buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .button--app {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 640px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature {
        padding: var(--spacing-md);
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
}

.modal.is-active {
    display: block;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal__container {
    background: var(--bg-elevated);
    border-radius: 16px;
    padding: 1.25rem;
    position: relative;
    width: 95%;
    max-width: 1000px;
    aspect-ratio: 2/1;
    margin: 1rem auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
    gap: 0.75rem;
}

.modal__icon {
    font-size: 2.25rem;
    margin-bottom: 0.25rem;
}

.modal__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.modal__text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 800px;
    margin: 0 auto;
}

.modal__features {
    text-align: left;
    margin: 0.5rem 0;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    width: 100%;
}

.modal__features h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.modal__features ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
}

.modal__features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal__note {
    font-style: italic;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.modal__close {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: auto;
    width: 100%;
    max-width: 200px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .modal__container {
        width: 95%;
        margin: 1rem auto;
        padding: 1rem;
        aspect-ratio: auto;
        max-height: 90vh;
    }

    .modal__content {
        gap: 0.5rem;
    }

    .modal__icon {
        font-size: 2rem;
    }

    .modal__title {
        font-size: 1.25rem;
    }

    .modal__text {
        font-size: 0.9rem;
    }

    .modal__features {
        margin: 0.5rem 0;
        padding: 0.75rem;
    }

    .modal__features ul {
        grid-template-columns: 1fr;
    }

    .modal__features li {
        font-size: 0.85rem;
    }

    .modal__note {
        font-size: 0.85rem;
    }

    .modal__close {
        width: 100%;
        max-width: none;
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .modal__container {
        width: 100%;
        margin: 0;
        border-radius: 0;
        height: 100vh;
        max-height: 100vh;
    }

    .modal__content {
        padding: 0.5rem;
    }

    .modal__icon {
        font-size: 1.75rem;
    }

    .modal__title {
        font-size: 1.1rem;
    }

    .modal__text {
        font-size: 0.85rem;
    }

    .modal__features {
        padding: 0.5rem;
    }

    .modal__features h4 {
        font-size: 0.95rem;
    }

    .modal__features li {
        font-size: 0.8rem;
    }

    .modal__note {
        font-size: 0.8rem;
    }

    .modal__close {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-primary);
}

.benefits__content {
    max-width: 1200px;
    margin: 0 auto;
}

.benefits__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.benefit {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 1rem;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.benefit:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.benefit__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.benefit__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.benefit__text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-secondary);
}

.how-it-works__content {
    max-width: 1200px;
    margin: 0 auto;
}

.how-it-works__steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    position: relative;
}

.how-it-works__steps::before {
    content: '';
    position: absolute;
    top: 2.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    z-index: 1;
}

.step {
    position: relative;
    z-index: 2;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.step__number {
    width: 3rem;
    height: 3rem;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto var(--spacing-md);
}

.step__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.step__text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* Update Features Grid */
.features__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}