/* OSR Calculator Styles */
:root {
    --vre: #ff6725;
    --vre-600: #e45d21;
    --vre-50: #fff3ec;
    --border: #e5e7eb;
    --muted: #6b7280;
    --ink: #1f2937;
}

/* Badge and Hero Styles */
.vre-badge {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    background: var(--vre-50);
    color: var(--vre);
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px dashed var(--vre);
    font-weight: 600;
    font-size: 13px;
}

.vre-hero {
    background: linear-gradient(135deg, var(--vre-50), #fff);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 25px 30px;
}

.vre-hero h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.vre-hero p {
    font-size: 16px;
    line-height: 1.6;
    color: #4b5563;
}

.vre-note {
    color: var(--muted);
    font-size: 13px;
}

.vre-chip {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    margin-right: 8px;
}

.vre-hl {
    color: var(--vre);
    font-weight: 700;
}

/* Button Styles */
.btn-vre {
    background: var(--vre);
    color: #fff;
    border: 0;
    border-radius: 8px;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s;
}

.btn-vre:hover {
    background: var(--vre-600);
    transform: translateY(-1px);
}

.btn-vre-outline {
    background: #fff;
    color: var(--vre);
    border: 2px solid var(--vre);
    border-radius: 8px;
    padding: 11px 19px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s;
}

.btn-vre-outline:hover {
    background: var(--vre-50);
}

/* KPI Cards */
.kpi h6 {
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
}

.kpi h4 {
    font-size: 26px;
    font-weight: 700;
}

.kpi .card-box {
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.kpi .card-box:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Form Elements */
.nice-select {
    width: 100%;
    height: 45px;
    line-height: 43px;
}

.form-control {
    height: 45px;
    font-size: 15px;
}

.dash-input-wrapper label {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

/* Article Styles */
#tool-article {
    padding: 40px 0;
}

#tool-article h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 20px;
    text-align: center;
}

#tool-article h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--ink);
    margin-top: 35px;
    margin-bottom: 15px;
}

#tool-article h4 {
    font-size: 20px;
    font-weight: 600;
    color: #374151;
    margin-top: 25px;
    margin-bottom: 12px;
}

#tool-article h5 {
    font-size: 18px;
    font-weight: 600;
    color: #4b5563;
    margin-top: 20px;
    margin-bottom: 10px;
}

#tool-article p {
    font-size: 16px;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 15px;
}

#tool-article ul {
    padding-left: 25px;
    margin-bottom: 20px;
}

#tool-article ul li {
    font-size: 16px;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 10px;
}

#tool-article .unit {
    font-weight: 700;
    color: var(--ink);
    font-size: 17px;
}

#tool-article .usage,
#tool-article .history {
    margin-left: 20px;
    font-size: 15px;
    color: #6b7280;
    margin-top: 5px;
}

#tool-article .callout {
    background: var(--vre-50);
    border-left: 4px solid var(--vre);
    padding: 16px 20px;
    border-radius: 8px;
    margin: 20px 0;
}

#tool-article .callout strong {
    color: var(--ink);
}

#tool-article table {
    margin: 20px 0;
}

#tool-article table th {
    font-size: 14px;
    font-weight: 600;
    padding: 12px;
    background: var(--vre-50);
    color: var(--ink);
}

#tool-article table td {
    font-size: 14px;
    padding: 10px;
    color: #4b5563;
}

#tool-article .example-box {
    background: #f9fafb;
    border: 1px solid var(--border);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
}

#tool-article .example-box strong {
    color: var(--ink);
    font-size: 15px;
}

#tool-article a {
    color: var(--vre);
    text-decoration: none;
    font-weight: 500;
}

#tool-article a:hover {
    text-decoration: underline;
}

#tool-article ol {
    padding-left: 25px;
    margin-bottom: 20px;
}

#tool-article ol li {
    font-size: 16px;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 10px;
}

/* Results Section */
#results .card-box {
    transition: all 0.3s;
}

#results .card-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}