/* =========================================================
   NeoCalculator.net — Concrete Calculator
   Same visual system as Number Sequence Calculator
   ========================================================= */

@import url('/css/percent-calculator-22ddf0d06da58bee5476ea4f3d55f776.css');

.concrete-container {
    padding-top: 30px;
    padding-bottom: 50px;
}

.concrete-container .hero-section {
    text-align: center;
}

.concrete-container .page-title,
.concrete-container .page-subtitle {
    text-align: center;
}

.concrete-container .page-subtitle {
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
}

.concrete-tabs {
    flex-wrap: wrap;
}

.concrete-panel {
    width: 100%;
    box-sizing: border-box;
}

.concrete-form-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--bg-input);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.concrete-form-row {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: center;
    gap: 14px;
}

.concrete-form-row > label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.concrete-input-with-unit {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 150px;
    gap: 10px;
    min-width: 0;
}

.concrete-input,
.concrete-select {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-dark);
    font-size: 1rem;
}

.concrete-input:focus,
.concrete-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.20);
}

.concrete-panel .pct-action-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.concrete-result-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.concrete-result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
}

.concrete-result-card span {
    display: block;
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-bottom: 5px;
}

.concrete-result-card strong {
    color: var(--accent);
    font-size: 1.15rem;
}

.concrete-result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 14px;
}

.concrete-result-table th,
.concrete-result-table td {
    padding: 10px 12px;
    border: 1px solid var(--border);
    text-align: left;
    font-size: 0.92rem;
}

.concrete-result-table th {
    width: 48%;
    background: var(--bg-input);
    color: var(--text-dark);
    font-weight: 700;
}

.concrete-error {
    color: var(--danger);
    font-weight: 600;
    margin: 0;
}

.concrete-container .calculator-how-to,
.concrete-container .faq-section {
    margin-top: 30px;
}

@media (max-width: 760px) {

    .concrete-tabs {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .concrete-tabs .pct-tab {
        width: 100%;
    }

    .concrete-form-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .concrete-input-with-unit {
        grid-template-columns: minmax(0, 1fr) 130px;
    }

    .concrete-result-summary {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {

    .concrete-container {
        padding-top: 20px;
        padding-bottom: 35px;
    }

    .concrete-form-grid {
        padding: 15px;
    }

    .concrete-input-with-unit {
        grid-template-columns: 1fr;
    }

    .concrete-panel .pct-action-btns {
        flex-direction: column;
    }

    .concrete-panel .pct-action-btns .btn {
        width: 100%;
    }

    .concrete-result-table th,
    .concrete-result-table td {
        padding: 8px 7px;
        font-size: 0.82rem;
    }
}