/* Calculator Page Specific Styles */

.tabs-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}

.tabs {
    display: flex;
    background: #f5f5f5;
    border-bottom: 2px solid #e0e0e0;
    overflow-x: auto;
}

.tab {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    transition: all 0.3s;
    white-space: nowrap;
}

.tab:hover {
    background: #e8e8e8;
}

.tab.active {
    background: white;
    color: #ff6600;
    border-bottom: 3px solid #ff6600;
}

.tab-content {
    display: none;
    padding: 2rem;
}

.tab-content.active {
    display: block;
}

.calculator-form {
    margin-top: 2rem;
}

.form-section {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #ff6600;
}

.form-section h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #555;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #ff6600;
}

.form-group small {
    margin-top: 0.25rem;
    color: #888;
    font-size: 0.85rem;
}

.result-box {
    background: #e8f5e9;
    padding: 2rem;
    border-radius: 8px;
    margin-top: 2rem;
    border-left: 4px solid #28a745;
}

.result-box h3 {
    color: #333;
    margin-bottom: 1.5rem;
}

.result-grid {
    display: grid;
    gap: 1rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: white;
    border-radius: 4px;
}

.result-item.total {
    background: #ff6600;
    color: white;
    font-size: 1.2rem;
    padding: 1rem;
}

.result-item strong {
    color: #ff6600;
}

.result-item.total strong {
    color: white;
}

.comparison-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.comparison-table th {
    background: #f5f5f5;
    font-weight: 600;
    color: #333;
}

.comparison-table tr:hover {
    background: #f9f9f9;
}

.comparison-table .best {
    background: #e8f5e9;
    font-weight: bold;
    color: #28a745;
}

/* Responsive */
@media (max-width: 768px) {
    .tabs {
        flex-direction: column;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
}

/* =========================================================================
   A4/A5 Calculator (V3 rebuild)
   ========================================================================= */
.calc-status { text-align:center; min-height:1.2em; font-weight:600; margin-bottom:1rem; }
.section-lead { font-size:1.05rem; color:var(--medium-gray); line-height:1.7; margin-bottom:1.5rem; }

/* Paradigm shift cards */
.paradigm-grid {
    display:grid; grid-template-columns:1fr auto 1fr; gap:1.5rem; align-items:center; margin-bottom:2rem;
}
.paradigm-card { background:white; border-radius:10px; padding:1.75rem; box-shadow:0 2px 12px rgba(0,0,0,0.08); border-top:4px solid #ccc; }
.paradigm-card.new { border-top-color:var(--simplicity-orange); }
.paradigm-icon { font-size:2.5rem; margin-bottom:0.5rem; }
.paradigm-card h3 { margin-bottom:0.5rem; }
.paradigm-card p { color:var(--medium-gray); line-height:1.6; }
.paradigm-arrow { font-size:2rem; color:var(--simplicity-orange); font-weight:bold; }

/* A1-A3 / A4 / A5 stage flow */
.stage-flow { display:flex; align-items:stretch; justify-content:center; gap:0.5rem; flex-wrap:wrap; }
.stage-step {
    background:#f5f5f5; border-radius:10px; padding:1rem 1.5rem; text-align:center; min-width:150px;
    display:flex; flex-direction:column; gap:0.15rem; border:2px solid transparent;
}
.stage-step.active { background:#fff3e0; border-color:var(--simplicity-orange); }
.stage-code { font-weight:800; font-size:1.1rem; color:var(--simplicity-orange-dark); }
.stage-step:not(.active) .stage-code { color:#999; }
.stage-name { font-weight:600; }
.stage-step small { color:var(--medium-gray); font-size:0.8rem; }
.stage-link { display:flex; align-items:center; font-size:1.5rem; color:#bbb; }

/* Projects bar */
.project-bar { display:flex; flex-wrap:wrap; gap:0.75rem; margin-bottom:1.5rem; }
.project-chip {
    display:flex; flex-direction:column; align-items:flex-start; gap:0.1rem;
    background:white; border:2px solid #e0e0e0; border-radius:10px; padding:0.7rem 1.2rem;
    cursor:pointer; font-family:inherit; transition:all 0.2s ease; min-width:140px;
}
.project-chip:hover { border-color:var(--simplicity-orange-light); }
.project-chip.active { border-color:var(--simplicity-orange); background:#fff8f2; }
.project-chip-name { font-weight:700; color:var(--dark-gray); }
.project-chip-loc { font-size:0.8rem; color:var(--medium-gray); }
.project-chip-add { border-style:dashed; color:var(--simplicity-orange); }
.project-chip-add .project-chip-name { color:var(--simplicity-orange); }

/* Project form */
.project-form { background:white; border-radius:10px; padding:1.75rem; box-shadow:0 2px 12px rgba(0,0,0,0.08); }
.pf-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:1rem; margin-bottom:1.25rem; }
.pf-field { display:flex; flex-direction:column; }
.pf-field.pf-wide { grid-column:span 2; }
.pf-field label { font-size:0.82rem; font-weight:600; margin-bottom:0.3rem; }
.pf-field input { padding:0.55rem 0.7rem; border:1px solid #ddd; border-radius:6px; font-family:inherit; font-size:0.95rem; }
.pf-field input:focus { outline:none; border-color:var(--simplicity-orange); box-shadow:0 0 0 3px rgba(255,102,0,0.12); }
.pf-actions { display:flex; flex-wrap:wrap; gap:0.75rem; }
.pf-actions .promo-btn { padding:0.6rem 1.4rem; font-size:0.95rem; }

/* Materials card */
.materials-card, .journey-card, .comparison-card, .site-tools-card {
    background:white; border-radius:10px; padding:1.75rem; box-shadow:0 2px 12px rgba(0,0,0,0.08); margin-bottom:2rem;
}
.materials-table select { padding:0.4rem; border:1px solid #ddd; border-radius:5px; font-family:inherit; font-size:0.85rem; max-width:230px; }
.materials-table input.num { width:90px; padding:0.4rem; border:1px solid #ddd; border-radius:5px; text-align:right; font-family:inherit; }
.unit-tag { color:var(--medium-gray); font-size:0.8rem; }

/* KPI cards */
.kpi-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:1.25rem; margin-bottom:2rem; }
.kpi-card { background:white; border-radius:10px; padding:1.5rem; text-align:center; box-shadow:0 2px 12px rgba(0,0,0,0.08); border-top:4px solid #ccc; }
.kpi-card.optimised { border-top-color:var(--simplicity-orange); }
.kpi-card.delta { border-top-color:var(--success-green); background:#f3fbf5; }
.kpi-icon { font-size:2rem; }
.kpi-value { font-size:2.2rem; font-weight:800; color:var(--dark-gray); line-height:1.1; }
.kpi-card.optimised .kpi-value { color:var(--simplicity-orange); }
.kpi-card.delta .kpi-value { color:var(--success-green); }
.kpi-label { font-weight:600; margin-top:0.25rem; }
.kpi-sub { color:var(--medium-gray); font-size:0.85rem; margin-top:0.25rem; }

/* Journey flow */
.journey-flow { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:0.5rem; margin:1.5rem 0; }
.journey-node { display:flex; flex-direction:column; align-items:center; gap:0.25rem; background:#f5f5f5; border-radius:10px; padding:1rem; min-width:110px; font-size:0.85rem; font-weight:600; }
.journey-node.site { background:#fff3e0; border:2px solid var(--simplicity-orange); }
.journey-icon { font-size:1.8rem; }
.journey-leg { display:flex; flex-direction:column; align-items:center; color:var(--medium-gray); font-size:0.8rem; min-width:90px; }
.journey-mode { font-weight:600; color:var(--dark-gray); }
.journey-note { color:var(--medium-gray); font-size:0.9rem; line-height:1.6; }

/* A5 slider */
.a5-summary { text-align:center; font-size:1.05rem; margin:0.5rem 0 1.5rem; color:var(--dark-gray); }
.slider-row { display:flex; align-items:center; gap:1rem; margin-top:1rem; }
.slider-week { font-weight:700; color:var(--simplicity-orange); min-width:75px; }
.slider-phase { color:var(--medium-gray); font-size:0.9rem; min-width:180px; }
#weekSlider { flex:1; accent-color:var(--simplicity-orange); height:6px; cursor:pointer; }

/* A5 live metric cards */
.metric-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:1rem; margin:1.5rem 0 2rem; }
.metric-card { background:white; border-radius:10px; padding:1.25rem; text-align:center; box-shadow:0 2px 12px rgba(0,0,0,0.08); border-top:4px solid #ccc; }
.metric-icon { font-size:1.6rem; }
.metric-value { font-size:1.9rem; font-weight:800; color:var(--dark-gray); line-height:1.1; transition:color 0.2s ease; }
.metric-label { color:var(--medium-gray); font-size:0.85rem; margin-top:0.2rem; }

/* A5 verdict */
.a5-verdict { background:#f3fbf5; border-left:4px solid var(--success-green); border-radius:6px; padding:1rem 1.25rem; margin-top:1rem; line-height:1.7; }

/* Site tools */
.site-tools-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1.25rem; margin-top:1rem; }
.site-tool-card { background:#f9f9f9; border:1px dashed #d5d5d5; border-radius:10px; padding:1.25rem; text-align:center; }
.site-tool-icon { font-size:2rem; margin-bottom:0.4rem; }
.site-tool-card h4 { margin-bottom:0.4rem; font-size:1rem; }
.site-tool-card p { color:var(--medium-gray); font-size:0.85rem; line-height:1.5; }

@media (max-width:768px) {
    .paradigm-grid { grid-template-columns:1fr; }
    .paradigm-arrow { transform:rotate(90deg); }
}