/* --- ESTILOS ESPECÍFICOS COMBUSTÍVEL --- */
:root {
    --cor-primaria: #2563eb;
    --cor-secundaria: #16a34a;
    --cor-fundo: #f1f5f9;
    --cor-card: #ffffff;
    --cor-texto: #1f2933;
    --cor-texto-suave: #64748b;
    --cor-gas: #f59e0b;
    /* Cor gasolina/amarelo */
}

[data-theme="dark"] {
    --cor-fundo: #0f172a;
    --cor-card: #1e293b;
    --cor-texto: #e2e8f0;
    --cor-texto-suave: #94a3b8;
}

body {
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    /* padding-bottom: 40px; */
}

.calculator-wrapper {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Card Principal */
.calc-card {
    background-color: var(--cor-card);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
    border-top: 4px solid var(--cor-gas);
}

.calc-header {
    text-align: center;
    margin-bottom: 30px;
}

.calc-header h2 {
    font-size: 26px;
    margin-bottom: 8px;
    color: var(--cor-texto);
}

/* Inputs */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--cor-texto);
    font-size: 14px;
}

input {
    width: 100%;
    padding: 14px;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    font-size: 16px;
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    outline: none;
}

input:focus {
    border-color: var(--cor-primaria);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Botão */
.btn-primary {
    width: 100%;
    padding: 16px;
    border-radius: 8px;
    border: none;
    background-color: var(--cor-primaria);
    color: white;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

/* Resultados */
.result-area {
    display: none;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
    text-align: center;
}

.main-result {
    margin-bottom: 24px;
}

.result-value {
    font-size: 48px;
    font-weight: 800;
    color: var(--cor-gas);
    line-height: 1;
}

.result-label {
    font-size: 14px;
    color: var(--cor-texto-suave);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.detail-card {
    background: #f8fafc;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.detail-title {
    font-size: 12px;
    color: var(--cor-texto-suave);
    margin-bottom: 4px;
}

.detail-val {
    font-size: 18px;
    font-weight: 700;
    color: var(--cor-texto);
}

/* Conteúdo Educativo */
.tips-card {
    background: var(--cor-card);
    padding: 24px;
    border-radius: 12px;
    margin-top: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--cor-texto-suave);
    font-size: 15px;
}

.check-icon {
    color: var(--cor-secundaria);
    font-weight: bold;
}

@media (max-width: 600px) {
    .details-grid {
        grid-template-columns: 1fr;
    }

    .result-value {
        font-size: 36px;
    }
}

/* Tips & Info */
.tips-card {
    background: var(--cor-card);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--cor-borda);
    margin-bottom: 30px;
}

.tips-card h3 {
    margin-bottom: 20px;
    color: var(--cor-texto);
    font-size: 1.4rem;
}

.tips-list {
    list-style: none;
}

.tips-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--cor-borda);
    color: var(--cor-texto-suave);
    display: flex;
    align-items: flex-start;
}

.tips-list li:last-child {
    border-bottom: none;
}

.check-icon {
    color: var(--cor-primaria);
    margin-right: 10px;
    font-weight: bold;
}

/* Links Externos */
.link-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 20px;
}

.link-card {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--cor-card);
    border: 1px solid var(--cor-borda);
    border-radius: 8px;
    text-decoration: none;
    color: var(--cor-texto);
    transition: transform 0.2s, box-shadow 0.2s;
}

.link-card:hover {
    transform: translateY(-2px);
    border-color: var(--cor-primaria);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.link-icon {
    font-size: 24px;
    margin-right: 15px;
    color: var(--cor-primaria);
}

.link-title {
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.4;
}

.link-desc {
    font-size: 0.85rem;
    color: var(--cor-texto-suave);
}