:root {
    --bg: #faf9f6;
    --text: #2c2a29;
    --brand: #d64933;
    --brand-light: #f5e4e1;
    --panel: #ffffff;
    --border: #e6e2df;
    --muted: #6b6664;
    --radius: 8px;
    --font-heading: system-ui, -apple-system, sans-serif;
    --font-body: Georgia, serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 17px;
}

h1, h2, h3, .logo, nav a, .big-number, button, input, select, .table-container {
    font-family: var(--font-heading);
}

a {
    color: var(--brand);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--brand);
    letter-spacing: -0.5px;
}

.site-header nav {
    display: flex;
    gap: 15px;
}

.site-header nav a {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
}

.intro-banner {
    text-align: center;
    padding: 40px 0 30px;
}

.intro-banner h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text);
}

.intro-banner p {
    color: var(--muted);
    font-size: 1.1rem;
}

.calc-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

.calc-panel, .results-panel {
    background: var(--panel);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.input-group h2, .results-panel h2 {
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

.input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

input, select {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    outline: none;
}

input:focus, select:focus {
    border-color: var(--brand);
}

input {
    flex: 1;
}

.hint {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 20px;
}

.presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 25px;
    align-items: center;
}

.presets span {
    font-size: 0.85rem;
    color: var(--muted);
    font-family: var(--font-heading);
}

.preset-btn {
    background: var(--brand-light);
    border: none;
    color: var(--brand);
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.preset-btn:hover {
    background: var(--brand);
    color: white;
}

.actions {
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border);
    padding: 10px 15px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text);
}

.secondary-btn:hover {
    background: var(--bg);
}

.result-card {
    margin-bottom: 25px;
}

.result-card h3 {
    font-size: 1rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.big-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--brand);
    line-height: 1;
    margin-bottom: 10px;
}

.big-number .sub-val {
    font-size: 1.2rem;
    color: var(--muted);
    font-weight: 500;
}

.result-note {
    font-size: 0.95rem;
    background: var(--bg);
    padding: 12px;
    border-radius: var(--radius);
    border-left: 4px solid var(--brand);
}

.dynamic-rules {
    list-style: none;
}

.dynamic-rules li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-heading);
    font-size: 0.95rem;
}

.dynamic-rules li:last-child {
    border-bottom: none;
}

.content-section {
    background: var(--panel);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--text);
}

.content-section p {
    margin-bottom: 20px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
}

.data-table caption {
    text-align: left;
    font-weight: bold;
    margin-bottom: 10px;
}

.data-table th, .data-table td {
    padding: 12px;
    border: 1px solid var(--border);
    text-align: left;
    font-size: 0.95rem;
}

.data-table th {
    background: var(--bg);
}

.hint-text {
    font-size: 0.9rem;
    color: var(--muted);
    font-style: italic;
}

.problem-list {
    list-style: none;
}

.problem-list li {
    background: var(--bg);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 15px;
}

.problem-list strong {
    display: block;
    color: var(--brand);
    font-family: var(--font-heading);
    margin-bottom: 8px;
}

.problem-list em {
    display: block;
    font-style: normal;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.site-footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--border);
    margin-top: 40px;
    color: var(--muted);
    font-size: 0.9rem;
}

.site-footer nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 15px 0;
}

@media (max-width: 768px) {
    .calc-section {
        grid-template-columns: 1fr;
    }
    .data-table {
        display: block;
        overflow-x: auto;
    }
    .content-section {
        padding: 25px;
    }
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}