@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

:root {
    --primary-color: #3b82f6;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --card-background-color: #ffffff;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --danger-color: #ef4444;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

header {
    background: var(--card-background-color);
    color: var(--text-color);
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px var(--shadow-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

header h1 a {
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 700;
}

main .container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
}

.tool-header {
    text-align: center;
    margin-bottom: 3rem;
}

.tool-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
}

.tool-header p {
    font-size: 1.1rem;
    color: #64748b;
}

.ad-slot {
    text-align: center;
    margin: 2rem 0;
    padding: 2rem;
    background-color: var(--card-background-color);
    border: 1px dashed var(--border-color);
    color: #94a3b8;
    border-radius: 12px;
}

.text-counter {
    margin-bottom: 2rem;
    background: var(--card-background-color);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
}

#text-input {
    width: 100%;
    height: 250px;
    padding: 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    resize: vertical;
    box-sizing: border-box;
}

.result-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: 8px;
}

.result-item {
    text-align: center;
    padding: 1rem;
    background: var(--card-background-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.result-item .label {
    display: block;
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 0.5rem;
}

.result-item .value {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

#reset-btn {
    display: block;
    width: 100%;
    margin-top: 1.5rem;
    padding: 0.8rem;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    background-color: var(--danger-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

#reset-btn:hover {
    background-color: #dc2626;
}

.info {
    padding: 1.5rem;
    background: var(--card-background-color);
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.info h3 {
    margin-top: 0;
    color: var(--text-color);
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    background-color: var(--card-background-color);
    color: #64748b;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a, .footer-links span {
    color: #64748b;
    margin: 0 0.5rem;
    font-size: 0.9rem;
    text-decoration: none;
}