/* --- ESTILOS ESPECÍFICOS ÁGUA --- */
:root {
    --cor-primaria: #0ea5e9;
    /* Azul Água */
    --cor-primaria-escura: #0284c7;
    --cor-secundaria: #16a34a;
    --cor-fundo: #f0f9ff;
    /* Fundo levemente azulado */
    --cor-card: #ffffff;
    --cor-texto: #1f2933;
    --cor-texto-suave: #64748b;
}

[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-primaria);
}

.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,
select {
    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,
select:focus {
    border-color: var(--cor-primaria);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 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: var(--cor-primaria-escura);
}

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

.water-icon-large {
    font-size: 60px;
    margin-bottom: 10px;
    display: block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.water-value {
    font-size: 42px;
    font-weight: 800;
    color: var(--cor-primaria);
    line-height: 1;
    margin-bottom: 5px;
}

.water-label {
    font-size: 16px;
    color: var(--cor-texto-suave);
    margin-bottom: 20px;
}

/* Copos Visuais */
.cups-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    padding: 20px;
    background: #f0f9ff;
    border-radius: 12px;
}

.cup-icon {
    font-size: 24px;
    opacity: 0.3;
    filter: grayscale(100%);
}

.cup-icon.active {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.1);
    transition: all 0.3s;
}

/* Conteúdo Educativo */
.tips-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.tip-card {
    background: var(--cor-card);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.tip-card h4 {
    margin-top: 0;
    color: var(--cor-primaria);
}

/* FAQ */
.faq-item {
    border-bottom: 1px solid var(--cor-borda);
}

details {
    padding: 15px 0;
    cursor: pointer;
}

summary {
    font-weight: 600;
    color: var(--cor-texto);
    list-style: none;
    display: flex;
    justify-content: space-between;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--cor-primaria);
}

details[open] summary::after {
    content: '-';
}

details p {
    margin-top: 10px;
    font-size: 0.95rem;
    color: var(--cor-texto-suave);
}

/* Cards */
.calc-card,
.info-card {
    background: var(--cor-card);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--sombra);
    border: 1px solid var(--cor-borda);
}

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