/* RSustain Carbon Tools — Design System v2.0
   Matching Carbon Diagnostic (rsustain.co.uk) standard
   Dark forest green + gold + off-white, sharp corners, corporate minimal */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@400;700&display=swap');

:root {
    --rc-forest: #052c22;
    --rc-forest-light: #0a3d30;
    --rc-gold: #d4af37;
    --rc-gold-hover: #b5952f;
    --rc-offwhite: #f8fafc;
    --rc-white: #ffffff;
    --rc-charcoal: #0f172a;
    --rc-text: #334155;
    --rc-text-light: #64748b;
    --rc-text-muted: #94a3b8;
    --rc-border: #cbd5e1;
    --rc-border-light: #e2e8f0;
    --rc-bg-subtle: #f1f5f9;
    --rc-red: #dc2626;
    --rc-green: #059669;
    --rc-font: 'Inter', system-ui, -apple-system, sans-serif;
    --rc-serif: 'Playfair Display', Georgia, serif;
    --rc-radius: 2px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 14px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--rc-font); background: var(--rc-offwhite); color: var(--rc-text); line-height: 1.6; }

/* ── Header ── */
.rc-header {
    background: var(--rc-white);
    border-bottom: 1px solid var(--rc-border-light);
    padding: 0;
}
.rc-header__inner {
    max-width: 1200px; margin: 0 auto;
    padding: 16px 40px;
    display: flex; align-items: center; gap: 16px;
}
.rc-header__logo {
    font-family: var(--rc-serif);
    font-size: 18px; font-weight: 700;
    color: var(--rc-forest);
    text-decoration: none;
    display: flex; align-items: center; gap: 8px;
}
.rc-header__logo img { height: 36px; width: auto; }
.rc-header__logo small { font-family: var(--rc-font); font-size: 10px; font-weight: 600; color: var(--rc-text-light); text-transform: uppercase; letter-spacing: 1px; }
.rc-header__title { flex: 1; }
.rc-header__title h1 { font-family: var(--rc-serif); font-size: 22px; font-weight: 700; color: var(--rc-forest); }
.rc-header__title p { font-size: 11px; color: var(--rc-text-light); margin-top: 2px; }
.rc-header__badge {
    font-size: 9px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1.5px; color: var(--rc-gold);
    border: 1px solid rgba(212,175,55,.3); background: rgba(212,175,55,.05);
    border-radius: var(--rc-radius); padding: 4px 12px;
}

/* ── Cross-Tool Nav ── */
.rc-toolnav {
    background: var(--rc-charcoal);
    display: flex; justify-content: center; gap: 0;
    padding: 0;
    border-bottom: 3px solid var(--rc-gold);
}
.rc-toolnav a {
    font-size: 10px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255,255,255,.5); text-decoration: none;
    padding: 10px 16px;
    transition: all .2s;
    border-left: 1px solid rgba(255,255,255,.05);
}
.rc-toolnav a:first-child { border-left: none; }
.rc-toolnav a:hover, .rc-toolnav a.active {
    color: #fff;
    background: rgba(255,255,255,.05);
}
.rc-toolnav a.active {
    border-bottom: 2px solid var(--rc-gold);
    color: var(--rc-gold);
}

/* ── Container ── */
.rc-container { max-width: 1100px; margin: 0 auto; padding: 40px; }
@media (max-width: 768px) { .rc-container { padding: 20px 16px; } }

/* ── Cards ── */
.rc-card {
    background: var(--rc-white);
    border: 1px solid var(--rc-border-light);
    border-top: 3px solid var(--rc-forest);
    border-radius: var(--rc-radius);
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,.05);
    margin-bottom: 20px;
}
.rc-card h2, .rc-card h3 {
    font-family: var(--rc-serif);
    color: var(--rc-forest);
    margin-bottom: 16px;
}
.rc-card h2 { font-size: 20px; }
.rc-card h3 { font-size: 16px; }

/* ── Form Elements ── */
label, .rc-label {
    display: block;
    font-size: 10px; font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--rc-text-light);
    margin-bottom: 5px;
}
input, select, textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--rc-border);
    border-radius: var(--rc-radius);
    font-family: var(--rc-font);
    font-size: 13px;
    color: var(--rc-text);
    background: var(--rc-white);
    transition: border-color .3s, background .3s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--rc-forest);
    background: var(--rc-white);
    box-shadow: 0 0 0 3px rgba(5,44,34,.08);
}
input[type="number"] { -moz-appearance: textfield; }
input[type="checkbox"], input[type="radio"] { width: auto; }
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
small, .rc-helper { font-size: 11px; color: var(--rc-text-muted); display: block; margin-top: 3px; }

/* ── Buttons ── */
.rc-btn {
    display: inline-block;
    padding: 14px 28px;
    font-family: var(--rc-font);
    font-size: 11px; font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none; border-radius: var(--rc-radius);
    cursor: pointer; transition: all .2s;
    text-decoration: none; text-align: center;
}
.rc-btn--gold {
    background: var(--rc-gold); color: #000;
}
.rc-btn--gold:hover { background: var(--rc-gold-hover); }
.rc-btn--forest {
    background: var(--rc-forest); color: var(--rc-white);
}
.rc-btn--forest:hover { background: var(--rc-forest-light); }
.rc-btn--outline {
    background: transparent;
    border: 1px solid var(--rc-border);
    color: var(--rc-text);
}
.rc-btn--outline:hover { border-color: var(--rc-forest); color: var(--rc-forest); }
.rc-btn--full { width: 100%; }

/* ── Tables ── */
table { width: 100%; border-collapse: collapse; font-size: 12px; }
thead { background: var(--rc-bg-subtle); }
th {
    text-align: left; padding: 10px 12px;
    font-size: 10px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--rc-forest);
    border-bottom: 2px solid var(--rc-border-light);
    cursor: pointer;
}
td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--rc-bg-subtle);
    color: var(--rc-text);
}
tr:hover td { background: rgba(5,44,34,.02); }

/* ── Metric Cards ── */
.rc-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
@media (max-width: 700px) { .rc-metrics { grid-template-columns: repeat(2, 1fr); } }
.rc-metric {
    background: var(--rc-white);
    border: 1px solid var(--rc-border-light);
    border-left: 3px solid var(--rc-gold);
    border-radius: var(--rc-radius);
    padding: 16px 20px;
    text-align: center;
}
.rc-metric__value {
    font-family: var(--rc-serif);
    font-size: 28px; font-weight: 700;
    color: var(--rc-forest);
}
.rc-metric__label {
    font-size: 9px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 1px;
    color: var(--rc-text-muted);
    margin-top: 4px;
}

/* ── Score Display ── */
.rc-score {
    text-align: center;
    padding: 30px;
    background: var(--rc-white);
    border: 1px solid var(--rc-border-light);
    border-top: 3px solid var(--rc-forest);
    border-radius: var(--rc-radius);
    margin-bottom: 20px;
}
.rc-score__ring { margin: 0 auto 16px; }
.rc-score__value {
    font-family: var(--rc-serif);
    font-size: 48px; font-weight: 700;
    color: var(--rc-forest);
}
.rc-score__label {
    font-size: 14px; font-weight: 700;
    color: var(--rc-forest);
}

/* ── Category Bars ── */
.rc-catbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 0; border-bottom: 1px solid var(--rc-border-light);
    font-size: 13px;
}
.rc-catbar__name { font-weight: 600; color: var(--rc-text); }
.rc-catbar__bar {
    width: 120px; height: 8px;
    background: var(--rc-bg-subtle);
    border-radius: 4px; overflow: hidden;
}
.rc-catbar__fill { height: 100%; border-radius: 4px; transition: width .5s; }
.rc-catbar__pct { font-weight: 700; min-width: 40px; text-align: right; }

/* ── Gap Cards ── */
.rc-gap {
    padding: 16px 20px;
    margin-bottom: 10px;
    border-radius: var(--rc-radius);
    border-left: 3px solid;
}
.rc-gap--critical { background: #fef2f2; border-color: var(--rc-red); }
.rc-gap--high { background: #fffbeb; border-color: var(--rc-gold); }
.rc-gap--medium { background: #f0fdf4; border-color: var(--rc-green); }
.rc-gap--low { background: var(--rc-bg-subtle); border-color: var(--rc-border); }
.rc-gap h4 { font-size: 13px; color: var(--rc-text); margin-bottom: 6px; }
.rc-gap p { font-size: 12px; color: var(--rc-text-light); line-height: 1.6; }

/* ── Section Headers ── */
.rc-section-header {
    font-family: var(--rc-serif);
    font-size: 11px; font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--rc-forest);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--rc-gold);
    margin-bottom: 20px;
}

/* ── Progress Bar ── */
.rc-progress {
    position: sticky; top: 0; z-index: 100;
    background: var(--rc-white);
    border-bottom: 1px solid var(--rc-border-light);
    padding: 10px 40px;
    display: flex; align-items: center; gap: 12px;
}
.rc-progress__bar {
    flex: 1; height: 4px;
    background: var(--rc-bg-subtle);
    border-radius: 2px; overflow: hidden;
}
.rc-progress__fill {
    height: 100%;
    background: var(--rc-gold);
    border-radius: 2px;
    transition: width .3s;
}
.rc-progress__text {
    font-size: 10px; font-weight: 600;
    color: var(--rc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 80px; text-align: right;
}

/* ── CTA Section ── */
.rc-cta {
    text-align: center;
    padding: 30px;
    background: var(--rc-forest);
    border-radius: var(--rc-radius);
    margin: 30px 0;
}
.rc-cta p { font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 12px; }
.rc-cta a {
    color: var(--rc-gold); font-weight: 700;
    text-decoration: none; font-size: 13px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.rc-cta a:hover { text-decoration: underline; }

/* ── Disclaimer ── */
.rc-disclaimer {
    text-align: center; font-size: 10px;
    color: var(--rc-text-muted);
    padding: 24px 40px;
    border-top: 1px solid var(--rc-border-light);
    margin-top: 40px;
}
.rc-disclaimer a { color: var(--rc-text-light); }

/* ── Consent ── */
.rc-consent {
    font-size: 11px; color: var(--rc-text-light);
    margin: 16px 0; display: flex;
    align-items: flex-start; gap: 8px;
}
.rc-consent input { margin-top: 2px; flex-shrink: 0; }
.rc-consent a { color: var(--rc-gold); }

/* ── Charts ── */
.rc-chart-container {
    background: var(--rc-white);
    border: 1px solid var(--rc-border-light);
    border-radius: var(--rc-radius);
    padding: 24px;
    margin-bottom: 20px;
}
.rc-chart-container h3 {
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--rc-forest);
    margin-bottom: 16px;
}

/* ── Filter Bar ── */
.rc-filters {
    display: flex; gap: 10px;
    margin-bottom: 20px; flex-wrap: wrap;
}
.rc-filters input, .rc-filters select {
    min-width: 180px; flex: 1;
    font-size: 12px;
}

/* ── Status Tags ── */
.rc-tag {
    display: inline-block;
    font-size: 9px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px;
    padding: 2px 8px; border-radius: var(--rc-radius);
}
.rc-tag--green { background: #dcfce7; color: #166534; }
.rc-tag--gold { background: #fef3c7; color: #92400e; }
.rc-tag--red { background: #fee2e2; color: #991b1b; }
.rc-tag--gray { background: var(--rc-bg-subtle); color: var(--rc-text-muted); }

/* ── Loading Spinner ── */
.rc-loader {
    position: fixed; inset: 0;
    background: rgba(255,255,255,.95);
    display: flex; align-items: center; justify-content: center;
    z-index: 9999;
}
.rc-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--rc-border-light);
    border-top-color: var(--rc-forest);
    border-radius: 50%;
    animation: rc-spin 1s linear infinite;
}
@keyframes rc-spin { to { transform: rotate(360deg); } }

/* ── Print ── */
@media print {
    body { background: #fff; }
    .rc-header, .rc-toolnav, .rc-cta, .rc-filters, .rc-progress { display: none; }
    .rc-card { box-shadow: none; border: 1px solid #ddd; page-break-inside: avoid; }
    .rc-disclaimer { border: none; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .rc-header__inner { padding: 12px 16px; }
    .rc-toolnav { flex-wrap: wrap; }
    .rc-toolnav a { padding: 8px 10px; font-size: 9px; }
    .rc-metrics { grid-template-columns: repeat(2, 1fr); }
    table { font-size: 11px; }
    th, td { padding: 8px; }
}