:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --dark-color: #333;
    --light-color: #f5f5f5;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --background-gradient: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.emoji-section {
    padding: 20px 0;
    min-height: 100vh;
    background: var(--background-gradient);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.calculator-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 40px 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.header-content {
    max-width: 600px;
    margin: 0 auto;
}

.calculator-title {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.emoji-icon {
    font-size: 2.5rem;
}

.calculator-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
}

.calculator-badge {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.badge-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.search-section {
    margin-bottom: 20px;
}

.search-box {
    display: flex;
    align-items: center;
    background: white;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    padding: 0 15px;
    max-width: 500px;
    margin: 0 auto;
}

.search-box i {
    color: #999;
    margin-right: 10px;
}

.search-box input {
    flex: 1;
    padding: 15px;
    border: none;
    font-size: 1rem;
    outline: none;
}

.clear-btn {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 5px;
    display: none;
}

.clear-btn.show {
    display: block;
}

.categories-section {
    margin-bottom: 25px;
}

.categories-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 10px 0;
    white-space: nowrap;
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: var(--card-shadow);
}

.categories-scroll::-webkit-scrollbar {
    display: none;
}

.category-btn {
    padding: 10px 20px;
    background: #f5f5f5;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    white-space: nowrap;
}

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

.category-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 25px;
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px;
    color: #999;
}

.emoji-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 15px 10px;
    background: #f8f9fa;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.emoji-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.emoji-symbol {
    font-size: 2.5rem;
}

.emoji-name {
    font-size: 0.8rem;
    color: #666;
    text-align: center;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.emoji-item.copied {
    background: rgba(76, 175, 80, 0.1);
    border-color: #4caf50;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.no-results-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 20px;
}

.no-results p {
    color: #666;
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .calculator-title {
        font-size: 1.8rem;
    }

    .calculator-header {
        padding: 25px 15px;
    }

    .emoji-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        padding: 15px;
        gap: 8px;
    }

    .emoji-symbol {
        font-size: 2rem;
    }
}