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

:root {
    --bg: #f1efe9;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border: #e2e0d8;
    --row-border: #f5f4f0;
    --old-accent: #92400e;
    --old-bg: #fef8ee;
    --old-border: #f5d9a8;
    --green: #15803d;
    --input-bg: #f8f7f4;
    --input-focus-ring: rgba(30, 64, 175, 0.1);
    --header-bg: #0f172a;
    --header-border: #334155;
    --header-sub: #94a3b8;
    --header-note-bg: rgba(255, 255, 255, 0.08);
    --header-note-border: rgba(255, 255, 255, 0.12);
    --header-note-text: #cbd5e1;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Outfit', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

header {
    background: var(--header-bg);
    color: #fff;
    padding: 1.75rem 1.5rem;
    text-align: center;
    border-bottom: 3px solid var(--header-border);
}

header h1 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 500;
    margin-bottom: 0.2rem;
}

header p {
    color: var(--header-sub);
    font-size: 0.9rem;
}

.regime-note {
    display: inline-block;
    margin-top: 0.6rem;
    padding: 0.25rem 0.8rem;
    background: var(--header-note-bg);
    border: 1px solid var(--header-note-border);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--header-note-text);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.1rem;
}

.card-body {
    padding: 1.25rem 1.5rem;
}

.income-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.9rem 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
}

.form-group input, .form-group select {
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text);
    font-family: 'Outfit', sans-serif;
}

.form-group input::placeholder {
    color: var(--text-light);
    opacity: 0.7;
    font-weight: 300;
}

.regime-grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
    gap: 1.5rem;
}

.regime-card {
    background: var(--card);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.regime-card .regime-header {
    padding: 0.85rem 1.25rem;
    font-family: 'Fraunces', Georgia, serif;
}

.regime-card.old .regime-header {
    background: var(--old-bg);
    border-bottom: 2px solid var(--old-border);
    color: var(--old-accent);
}

.regime-body {
    padding: 1.15rem;
}

.comp-row {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--row-border);
}

.comp-row.total-row {
    border-top: 2px solid var(--text);
    font-weight: 700;
    margin-top: 0.2rem;
}

.comp-row.negative .comp-value {
    color: var(--green);
}

.comp-row.negative .comp-value::before {
    content: "− ";
}

.slab-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    margin-top: 0.35rem;
}

.slab-table th {
    text-align: left;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 0.3rem 0;
    border-bottom: 2px solid var(--border);
}

.slab-table td {
    padding: 0.3rem 0;
    border-bottom: 1px solid var(--row-border);
}

.slab-table tr.zero td {
    color: var(--text-light);
}