/* Container principal */
.oil-calculator-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Secțiuni */
.calculator-section {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.calculator-section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

/* Grid pentru formulare */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* Grupuri de form */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 500;
}

/* Inputs */
input[type="number"],
input[type="date"],
select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input[type="number"]:focus,
input[type="date"]:focus,
select:focus {
    border-color: #4299e1;
    outline: none;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

/* Checkbox-uri */
.checkboxes {
    display: flex;
    gap: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

/* Butoane */
.primary-button,
.secondary-button {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.primary-button {
    background: linear-gradient(to right, #4299e1, #667eea);
    color: #5a67d8;
    width: 100%;
    margin-top: 24px;
}

.primary-button:hover {
    background: linear-gradient(to right, #3182ce, #5a67d8);
}

.secondary-button {
    background: #e2e8f0;
    color: #4a5568;
}

.secondary-button:hover {
    background: #cbd5e0;
}

/* Selector tip estimare */
.estimation-type-selector {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.estimation-type-selector button {
    padding: 8px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    background: #5a67d8
    cursor: pointer;
}

.estimation-type-selector button.active {
    background: #4299e1;
    color: #e5e7fb83;
    border-color: #0e4f84;
}

/* Rezultate */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.result-card {
    background: #f7fafc;
    padding: 16px;
    border-radius: 6px;
    text-align: center;
}

.result-card h3 {
    color: #4a5568;
    font-size: 1rem;
    margin-bottom: 8px;
}

.result-card p {
    color: #2d3748;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Factori */
.factors-container {
    background: #5a67d8
    padding: 20px;
    border-radius: 6px;
}

.factors-container h3 {
    color: #2d3748;
    margin-bottom: 16px;
}

.factor-item {
    border-left: 4px solid #4299e1;
    padding-left: 16px;
    margin-bottom: 16px;
}

.factor-item h4 {
    color: #2d3748;
    margin-bottom: 4px;
}

.factor-item p {
    color: #4a5568;
    line-height: 1.5;
}

/* Utilități */
.hidden {
    display: none;
}