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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-light: #f8f8f8;
    --gray-medium: #666666;
    --gray-dark: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.4;
    font-size: 14px;
}

.header {
    border-bottom: 1px solid var(--gray-light);
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.subtitle {
    font-size: 0.75rem;
    color: var(--gray-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.search-container {
    width: 100%;
    max-width: 300px;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-light);
    background: var(--white);
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    border-color: var(--black);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--gray-light);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 300;
    color: var(--black);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--gray-medium);
    text-transform: lowercase;
}

.filters {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 3rem;
    overflow-x: auto;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--gray-medium);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.2s ease;
    white-space: nowrap;
    text-transform: lowercase;
}

.filter-btn:hover {
    color: var(--black);
}

.filter-btn.active {
    color: var(--black);
    position: relative;
}

.filter-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--black);
    border-radius: 50%;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1px;
    background: var(--gray-light);
}

.animal-card {
    background: var(--white);
    padding: 1.5rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    position: relative;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.animal-card:hover {
    background: var(--gray-light);
}

.favorite-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: transparent;
    border: none;
    width: 20px;
    height: 20px;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--gray-medium);
    transition: color 0.2s ease;
}

.favorite-btn:hover {
    color: var(--black);
}

.favorite-btn.active {
    color: var(--black);
}

.animal-name {
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 0.25rem;
    text-transform: lowercase;
}

.animal-sound {
    font-size: 0.75rem;
    color: var(--gray-medium);
    margin-bottom: 1rem;
    text-transform: lowercase;
}

.play-btn {
    align-self: flex-start;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--black);
    background: var(--white);
    color: var(--black);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: lowercase;
}

.play-btn:hover {
    background: var(--black);
    color: var(--white);
}

.play-btn.playing {
    background: var(--black);
    color: var(--white);
}

.play-icon {
    font-size: 0.625rem;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    max-width: 400px;
    width: 90%;
    background: var(--white);
    position: relative;
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-medium);
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: var(--black);
}

.modal-body {
    padding: 3rem 2rem 2rem;
    text-align: center;
}

.animal-name-large {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
    text-transform: lowercase;
}

.animal-sound {
    color: var(--gray-medium);
    margin-bottom: 2rem;
    font-size: 0.875rem;
    text-transform: lowercase;
}

.play-btn-large {
    padding: 1rem 2rem;
    border: 1px solid var(--black);
    background: var(--white);
    color: var(--black);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 auto 2rem;
    text-transform: lowercase;
}

.play-btn-large:hover {
    background: var(--black);
    color: var(--white);
}

.play-btn-large.playing {
    background: var(--black);
    color: var(--white);
}

.animal-info {
    text-align: left;
    padding: 1.5rem;
    background: var(--gray-light);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-dark);
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1.5rem;
        align-items: flex-start;
    }
    
    .search-container {
        max-width: 100%;
    }
    
    .stats {
        gap: 2rem;
    }
    
    .filters {
        justify-content: flex-start;
        padding-left: 0;
    }
    
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    .header {
        padding: 1.5rem 1rem;
    }
    
    .stats {
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    
    .modal-body {
        padding: 2rem 1.5rem 1.5rem;
    }
}