/* VIP Refrigerant Toolkit — vrt.css */

#vrt-wrap {
    max-width: 820px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #111;
}
#vrt-wrap * { box-sizing: border-box; }

/* ── TABS ── */
#vrt-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 0;
    background: #f4f4f6;
    padding: 6px;
    border-radius: 14px 14px 0 0;
    border: 1px solid #e8e8e8;
    border-bottom: none;
    flex-wrap: wrap;
}

.vrt-tab {
    flex: 1;
    min-width: 160px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 11px 14px;
    background: none;
    border: none;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: background 0.16s, color 0.16s;
    font-family: inherit;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}
.vrt-tab:hover { background: #eaeaec; color: #333; }
.vrt-tab.active {
    background: #fff;
    color: #4D148C;
    box-shadow: 0 1px 6px rgba(0,0,0,0.1);
}
.vrt-tab svg { flex-shrink: 0; }

/* ── PANEL ── */
.vrt-panel {
    display: none;
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 0 0 14px 14px;
    padding: 28px 28px 24px;
}
.vrt-panel.active { display: block; }

.vrt-panel-header { margin-bottom: 22px; }
.vrt-panel-header h3 {
    font-size: 18px;
    font-weight: 800;
    color: #111;
    margin: 0 0 6px;
    letter-spacing: -0.3px;
}
.vrt-panel-header p {
    font-size: 13px;
    color: #888;
    margin: 0;
}

/* ── FORM ── */
.vrt-form { display: flex; flex-direction: column; gap: 14px; }

.vrt-row { display: flex; flex-direction: column; gap: 5px; }
.vrt-row label {
    font-size: 12px;
    font-weight: 700;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.7px;
}
.vrt-hint { font-weight: 400; text-transform: none; color: #aaa; letter-spacing: 0; }

.vrt-row select,
.vrt-row input {
    padding: 11px 14px;
    border: 1.5px solid #e0e0e0;
    border-radius: 9px;
    font-size: 14px;
    font-family: inherit;
    color: #111;
    background: #fafafa;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
}
.vrt-row select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}
.vrt-row select:focus,
.vrt-row input:focus {
    border-color: #4D148C;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(77,20,140,0.09);
}
.vrt-row input::placeholder { color: #ccc; }

/* ── BUTTON ── */
.vrt-btn {
    padding: 13px 32px;
    background: #4D148C;
    color: #fff;
    border: none;
    border-radius: 9px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    align-self: flex-start;
    transition: background 0.16s, transform 0.12s;
    box-shadow: 0 4px 14px rgba(77,20,140,0.28);
    -webkit-tap-highlight-color: transparent;
}
.vrt-btn:hover  { background: #3b0e6e; transform: translateY(-1px); }
.vrt-btn:active { transform: translateY(0); }

/* ── RESULT AREA ── */
.vrt-result { margin-top: 22px; animation: vrt-fade 0.25s ease; }
@keyframes vrt-fade { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }

.vrt-result-title {
    font-size: 12px;
    font-weight: 700;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

/* Result cards grid */
.vrt-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin-bottom: 4px;
}

.vrt-card {
    background: #f8f8f8;
    border: 1px solid #efefef;
    border-radius: 11px;
    padding: 14px 16px;
    transition: background 0.15s;
}
.vrt-card.highlight {
    background: linear-gradient(135deg, #4D148C, #6b1fbe);
    border-color: transparent;
}
.vrt-card-label {
    font-size: 10px;
    font-weight: 700;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 5px;
}
.vrt-card.highlight .vrt-card-label { color: rgba(255,255,255,0.65); }
.vrt-card-value {
    font-size: 20px;
    font-weight: 800;
    color: #111;
    letter-spacing: -0.5px;
    line-height: 1.2;
}
.vrt-card.highlight .vrt-card-value { color: #fff; }
.vrt-card-sub {
    font-size: 11px;
    color: #999;
    margin-top: 4px;
    line-height: 1.4;
}
.vrt-card.highlight .vrt-card-sub { color: rgba(255,255,255,0.65); }

/* ── CYLINDER RECOMMENDATION ── */
.vrt-cylinder-rec { display: flex; flex-direction: column; gap: 8px; margin-bottom: 4px; }

.vrt-cyl-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    background: #f8fbff;
    border: 1px solid #dce9ff;
    border-radius: 10px;
}
.vrt-cyl-count {
    font-size: 26px;
    font-weight: 900;
    color: #4D148C;
    min-width: 44px;
    text-align: center;
    line-height: 1;
}
.vrt-cyl-info { display: flex; flex-direction: column; gap: 2px; }
.vrt-cyl-info strong { font-size: 14px; color: #111; }
.vrt-cyl-info span   { font-size: 12px; color: #888; }

/* ── SHOP BUTTON ── */
.vrt-shop-btn {
    display: inline-flex;
    align-items: center;
    margin-top: 16px;
    padding: 11px 22px;
    background: #FF6200;
    color: #fff;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.15s, transform 0.12s;
    box-shadow: 0 4px 12px rgba(255,98,0,0.3);
}
.vrt-shop-btn:hover { background: #d95000; transform: translateY(-1px); color: #fff; }

/* ── COMPATIBILITY ── */
.vrt-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}
.vrt-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3px;
}
.vrt-badge.red    { background: #fff0f0; color: #c0392b; border: 1px solid #f5c6c6; }
.vrt-badge.orange { background: #fff5f0; color: #d35400; border: 1px solid #f8d5c0; }
.vrt-badge.green  { background: #f0fff4; color: #1a7a3e; border: 1px solid #c0e8cc; }
.vrt-badge.blue   { background: #f0f6ff; color: #1565c0; border: 1px solid #c0d8f8; }

.vrt-fact-note {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    margin: 0 0 4px;
    padding: 12px 14px;
    background: #f8f8f8;
    border-radius: 9px;
    border-left: 3px solid #4D148C;
}

.vrt-compat-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px;
    border-radius: 11px;
    margin-bottom: 8px;
    border: 1px solid;
}
.vrt-compat-row.compat-yes     { background: #f0fff4; border-color: #b8e8c8; }
.vrt-compat-row.compat-maybe   { background: #fffbf0; border-color: #f8e0a0; }
.vrt-compat-row.compat-no      { background: #fff5f5; border-color: #f8c0c0; }
.vrt-compat-row.compat-unknown { background: #f5f5ff; border-color: #d8d8f8; }

.vrt-compat-icon { font-size: 20px; flex-shrink: 0; line-height: 1; margin-top: 1px; }
.vrt-compat-body { flex: 1; min-width: 0; }
.vrt-compat-body strong { display: block; font-size: 15px; font-weight: 700; color: #111; margin-bottom: 3px; }
.vrt-compat-body p { font-size: 13px; color: #555; margin: 4px 0 0; line-height: 1.5; }
.vrt-compat-level {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #999;
}

/* ── BTU HERO ── */
.vrt-btu-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 20px;
    background: linear-gradient(135deg, #4D148C, #7b22e0);
    border-radius: 14px;
    margin-bottom: 16px;
}
.vrt-btu-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.vrt-btu-number {
    font-size: 36px;
    font-weight: 900;
    color: #fff;
    letter-spacing: -1px;
    line-height: 1;
}
.vrt-btu-label {
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,0.65);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.vrt-btu-divider {
    font-size: 28px;
    color: rgba(255,255,255,0.4);
    font-weight: 300;
}

/* ── REFRIGERANT RECOMMENDATIONS ── */
.vrt-ref-rec-list { display: flex; flex-direction: column; gap: 8px; }
.vrt-ref-rec {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #f8f8f8;
    border: 1px solid #eee;
    border-radius: 10px;
}
.vrt-ref-rec strong { font-size: 14px; font-weight: 700; color: #4D148C; min-width: 70px; }
.vrt-ref-rec span   { flex: 1; font-size: 13px; color: #666; }
.vrt-ref-rec a      { font-size: 13px; font-weight: 700; color: #FF6200; text-decoration: none; white-space: nowrap; }
.vrt-ref-rec a:hover { text-decoration: underline; }

/* ── INFO / WARNING BOXES ── */
.vrt-info-box {
    font-size: 13px;
    color: #555;
    line-height: 1.55;
    padding: 12px 14px;
    background: #f0f6ff;
    border: 1px solid #d0e4f8;
    border-radius: 9px;
}
.vrt-warning {
    font-size: 13px;
    color: #8a4800;
    line-height: 1.55;
    padding: 12px 14px;
    background: #fff8f0;
    border: 1px solid #f8d8a0;
    border-radius: 9px;
    margin-top: 10px;
}
.vrt-error {
    font-size: 13px;
    color: #c0392b;
    padding: 12px 14px;
    background: #fff5f5;
    border: 1px solid #f8c0c0;
    border-radius: 9px;
    font-weight: 500;
}

/* ── DISCLAIMER ── */
.vrt-disclaimer {
    font-size: 11px;
    color: #bbb;
    text-align: center;
    margin-top: 16px;
    line-height: 1.5;
    padding: 0 10px;
}

/* ═══ MOBILE ═══ */
@media (max-width: 600px) {
    .vrt-panel { padding: 20px 16px 18px; }
    #vrt-tabs  { gap: 4px; padding: 4px; }
    .vrt-tab   { font-size: 12px; padding: 9px 8px; min-width: 0; }
    .vrt-tab svg { display: none; }
    .vrt-btn   { width: 100%; text-align: center; align-self: stretch; }
    .vrt-result-grid { grid-template-columns: 1fr 1fr; }
    .vrt-btu-number  { font-size: 28px; }
    .vrt-cyl-count   { font-size: 22px; }
    .vrt-compat-row  { flex-direction: row; }
    .vrt-ref-rec     { flex-wrap: wrap; }
    .vrt-shop-btn    { width: 100%; text-align: center; justify-content: center; }
}