/* =============================================
   CONCRETE CALCULATOR — concrete.css
   Tool-specific styles only.
   Common styles are in tool.css
   ============================================= */

.con-calc { width: 100%; }

/* Layout: inputs left, results right */
.con-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

/* Input row with unit select */
.con-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.con-input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
    min-width: 0;
}
.con-input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }

.con-unit-select {
    padding: 10px 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    font-family: var(--font-main);
    color: var(--text);
    background: var(--white);
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
    white-space: nowrap;
}
.con-unit-select:focus { border-color: var(--teal); }

/* Results */
.con-results {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.con-result-header {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    padding: 10px 16px;
}

/* Answer cards */
.con-ans-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 14px;
    background: var(--light);
    border-bottom: 1px solid var(--border);
}
.con-ans-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
}
.con-ans-card.highlight { border-color: var(--teal); background: #f0fdf9; }
.con-ans-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.con-ans-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--teal);
    font-family: var(--font-mono);
    line-height: 1.2;
}
.con-ans-sub {
    font-size: 12px;
    color: var(--text2);
    margin-top: 3px;
}

/* Breakdown table */
.con-breakdown { padding: 12px 14px 14px; }
.con-table { width: 100%; }
.con-table td:last-child {
    text-align: right;
    font-family: var(--font-mono);
    color: var(--navy);
}
.con-note {
    font-size: 11px;
    color: var(--muted);
    font-style: italic;
    margin-top: 8px;
}

/* =============================================
   SETTINGS PANEL
   ============================================= */
.con-settings-wrap { margin: 0 0 16px 0; }

.con-settings-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--navy);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--font-main);
    transition: background 0.2s;
}
.con-settings-btn:hover { background: var(--navy2); }
.con-settings-arrow { font-size: 10px; margin-left: 2px; }

.con-settings-panel {
    margin-top: 10px;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.con-settings-row {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.con-settings-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--navy);
    min-width: 130px;
}
.con-settings-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.con-radio-label {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
}
.con-radio-label input[type="radio"] {
    width: 17px;
    height: 17px;
    accent-color: var(--teal);
    cursor: pointer;
}

@media (max-width: 768px) {
    .con-layout { grid-template-columns: 1fr; }
    .con-ans-cards { grid-template-columns: 1fr; }
    .con-settings-row { flex-direction: column; align-items: flex-start; }
}