:root {
    --primary: #0d3b66;
    --primary-light: #144272;
    --primary-dark: #0a0a23;
    --accent: #00d4ff;
    --accent-hover: #00b8d4;
    --danger: #c0392b;
    --warning: #f39c12;
    --bg: #f0f2f5;
    --bg-card: #ffffff;
    --text: #2c3e50;
    --text-muted: #7f8c8d;
    --border: #dce1e6;
    --input-bg: #fafbfc;
    --input-border: #c8ced3;
    --input-focus: #00d4ff;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-sm: 4px;
    --positive: #27ae60;
    --negative: #c0392b;
    --neutral: #7f8c8d;
    --yellow-bg: #fffde7;
    --yellow-border: #f9e04b;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

.app-header {
    background: linear-gradient(135deg, #0a0a23 0%, #1a1a4e 40%, #0d3b66 70%, #144272 100%);
    color: white;
    padding: 14px 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 2px solid rgba(0,212,255,0.3);
}

.app-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, #7b2ff7, #00d4ff, transparent);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.header-logo {
    height: 40px;
    width: auto;
    border-radius: 4px;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: linear-gradient(90deg, #ffffff, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-header .subtitle {
    font-size: 0.72rem;
    opacity: 0.7;
    margin-top: 2px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
    background: linear-gradient(180deg, #f8f9fa, #f0f2f5);
    min-height: calc(100vh - 70px);
}

.tabs {
    display: flex;
    gap: 2px;
    background: #0a0a23;
    border-radius: var(--radius) var(--radius) 0 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-bottom: 1px solid rgba(0,212,255,0.2);
}

.tab-btn {
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
    letter-spacing: 0.02em;
}

.tab-btn:hover {
    background: rgba(0,212,255,0.08);
    color: rgba(255,255,255,0.9);
}

.tab-btn.active {
    background: rgba(0,212,255,0.1);
    color: #00d4ff;
    border-bottom-color: #00d4ff;
}

.tab-content {
    display: none;
    background: var(--bg-card);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 24px;
    border: 1px solid rgba(0,212,255,0.1);
    border-top: none;
}

.tab-content.active { display: block; }

.card {
    background: var(--bg-card);
    border: 1px solid rgba(0,212,255,0.1);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-bottom: 18px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(0,212,255,0.2);
}

.card-title .badge {
    font-size: 0.7rem;
    background: linear-gradient(135deg, #00d4ff, #00b8d4);
    color: #0a0a23;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
    font-weight: 600;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 16px; }

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.form-group label .hint {
    font-weight: 400;
    font-size: 0.72rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    background: var(--input-bg);
    color: var(--text);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #00d4ff;
    box-shadow: 0 0 0 3px rgba(0,212,255,0.15);
}

.form-group input.campo-amarelo {
    background: var(--yellow-bg);
    border-color: var(--yellow-border);
}

.form-group input.campo-amarelo:focus {
    border-color: var(--input-focus);
}

.form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.form-row .form-group { flex: 1; margin-bottom: 0; }

.resultado-campo {
    background: rgba(0,212,255,0.08);
    border: 1px solid rgba(0,212,255,0.2);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
}

.resultado-calc {
    background: rgba(0,212,255,0.05);
    border: 1px solid rgba(0,212,255,0.15);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, #0d3b66, #144272);
    color: white;
    border: 1px solid rgba(0,212,255,0.3);
}
.btn-primary:hover { 
    background: linear-gradient(135deg, #144272, #1a5276);
    box-shadow: 0 0 12px rgba(0,212,255,0.3);
}

.btn-accent {
    background: linear-gradient(135deg, #00d4ff, #00b8d4);
    color: #0a0a23;
    font-weight: 700;
}
.btn-accent:hover { 
    background: linear-gradient(135deg, #00b8d4, #0097b2);
    box-shadow: 0 0 12px rgba(0,212,255,0.4);
}

.btn-group {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

table th {
    background: linear-gradient(135deg, #0a0a23, #0d3b66);
    color: white;
    padding: 8px 10px;
    text-align: left;
    font-weight: 500;
    font-size: 0.76rem;
    letter-spacing: 0.02em;
}

table td {
    padding: 7px 10px;
    border-bottom: 1px solid var(--border);
}

table tr:hover { background: #f7f9fb; }

table tr.subtotal {
    background: rgba(0,212,255,0.08);
    font-weight: 600;
}

table tr.total {
    background: linear-gradient(135deg, #0a0a23, #0d3b66);
    color: white;
    font-weight: 600;
}

table .num { text-align: right; font-variant-numeric: tabular-nums; }
table .pos { color: var(--positive); font-weight: 600; }
table .neg { color: var(--negative); font-weight: 600; }
table .neu { color: var(--neutral); }

.destaque-box {
    background: linear-gradient(135deg, #0a0a23, #0d3b66);
    border: 1px solid rgba(0,212,255,0.4);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    margin: 16px 0;
    box-shadow: 0 0 20px rgba(0,212,255,0.1);
}

.destaque-box.recomendacao {
    background: linear-gradient(135deg, #0a0a23, #1a1a4e);
    border-color: rgba(0,212,255,0.5);
}

.destaque-box .valor-grande {
    font-size: 1.8rem;
    font-weight: 700;
    color: #00d4ff;
    margin: 4px 0;
    text-shadow: 0 0 10px rgba(0,212,255,0.3);
}

.destaque-box .rotulo {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin: 16px 0;
}

.result-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    border: 1px solid rgba(0,212,255,0.1);
}

.result-card .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.result-card .value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.result-card .sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.alert {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    margin-bottom: 12px;
}

.alert-warning {
    background: rgba(243,156,18,0.08);
    border: 1px solid rgba(243,156,18,0.3);
    color: #7d6608;
}

.alert-info {
    background: rgba(0,212,255,0.08);
    border: 1px solid rgba(0,212,255,0.3);
    color: #0d3b66;
}

.alert-success {
    background: rgba(39,174,96,0.08);
    border: 1px solid rgba(39,174,96,0.3);
    color: #1e8449;
}

.alert-danger {
    background: rgba(192,57,43,0.08);
    border: 1px solid rgba(192,57,43,0.3);
    color: #922b21;
}

.section-separator {
    border: none;
    border-top: 2px solid var(--border);
    margin: 20px 0;
}

.activity-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.activity-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.72rem;
    font-weight: 600;
    color: white;
}

.activity-tag.ativ1 { 
    background: linear-gradient(135deg, #0d3b66, #144272); 
}
.activity-tag.ativ2 { 
    background: linear-gradient(135deg, #00d4ff, #00b8d4); 
    color: #0a0a23;
}

.readonly-field {
    background: rgba(0,212,255,0.03) !important;
    border-color: rgba(0,212,255,0.1) !important;
    color: var(--text-muted) !important;
    cursor: default;
}

.help-text {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-style: italic;
}

.calc-display {
    font-weight: 600;
    color: var(--primary);
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 16px 0;
}

.card-leia-me {
    background: linear-gradient(135deg, rgba(0,212,255,0.03), rgba(0,212,255,0.01));
    border: 1px solid rgba(0,212,255,0.15);
}

.leia-me-content {
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--text);
}

.leia-me-section {
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(0,212,255,0.1);
}

.leia-me-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.leia-me-section h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.leia-me-section p {
    margin-bottom: 6px;
}

.leia-me-section ul {
    padding-left: 20px;
    margin: 6px 0;
}

.leia-me-section li {
    margin-bottom: 4px;
}

.leia-me-aviso {
    background: rgba(243,156,18,0.08);
    border: 1px solid rgba(243,156,18,0.3);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-top: 12px;
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .result-grid { grid-template-columns: 1fr; }
    .tabs { flex-wrap: nowrap; }
    .tab-btn { padding: 8px 12px; font-size: 0.75rem; }
    .container { padding: 8px; }
    .tab-content { padding: 16px; }
}

@media (max-width: 480px) {
    .app-header h1 { font-size: 1rem; }
    .form-row { flex-direction: column; }
}