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

main {
    flex: 1;
    padding: 20px;
}

main.container {
    display: block;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px;
    background-color: var(--primary-bg-color);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

main h1 {
    color: var(--primary-text-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-align: center;
}

main .subtitle {
    color: var(--secondary-text-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

main h3 {
    color: var(--primary-text-color);
    font-size: 1.1rem;
    margin-bottom: 15px;
}

main h4 {
    color: var(--primary-text-color);
    font-size: 1rem;
    margin-bottom: 10px;
}

.tool-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.input-section, .output-section {
    background: var(--input-bg-color);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--input-border-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--primary-text-color);
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--header-bg-color);
    color: var(--primary-text-color);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--button-bg-color);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-text-color);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"],
.checkbox-label input[type="radio"] {
    cursor: pointer;
}

.action-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

button, .secondary-btn {
    padding: 12px 24px;
    background: var(--button-bg-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

button:hover, .secondary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.secondary-btn {
    background: var(--header-bg-color);
    color: var(--primary-text-color);
    border: 2px solid var(--input-border-color);
}

.info-box {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--header-bg-color);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--primary-text-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--input-border-color);
    margin-top: 20px;
}

.info-box div {
    color: var(--primary-text-color);
}

.info-box svg {
    flex-shrink: 0;
    stroke: var(--button-bg-color);
}

.info-box strong {
    color: var(--button-bg-color);
}

.hidden {
    display: none !important;
}

@media (max-width: 1024px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    main h1 {
        font-size: 2rem;
    }

    main .subtitle {
        font-size: 1rem;
    }
}