/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --text-color: #111827;
    --text-secondary: #6b7280;
    --background: #f9fafb;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

.word-counter-tool {
    font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    max-width: 1100px;
    margin: 0 auto;
}

/* Text Area Styles */
.word-counter-tool .input-section {
    margin-bottom: 40px;
}

.word-counter-tool .text-input {
    width: 100%;
    min-height: 200px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.word-counter-tool .text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Stats Grid */
.word-counter-tool .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.word-counter-tool .stat-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.word-counter-tool .stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.word-counter-tool .stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.word-counter-tool .stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Keyword Density Section */
.word-counter-tool .keyword-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 40px;
}

.word-counter-tool .section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.word-counter-tool .keyword-tables {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.word-counter-tool .keyword-table {
    width: 100%;
    border-collapse: collapse;
}

.word-counter-tool .keyword-table th {
    text-align: left;
    padding: 12px;
    background-color: var(--background);
    font-weight: 600;
}

.word-counter-tool .keyword-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.word-counter-tool .keyword-table tr:last-child td {
    border-bottom: none;
}

/* Loading Animation */
.word-counter-tool .loading {
    opacity: 0.7;
    pointer-events: none;
}

.word-counter-tool .loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .word-counter-tool .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .word-counter-tool .keyword-tables {
        grid-template-columns: 1fr;
    }
}