@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Inter:wght@400;500;700&display=swap');

:root {
  --bg: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --text: #ffffff;
  --text-muted: #888888;
  --accent: #ff3c00;
  --border: #333333;
  --success: #00ff88;
  --warning: #ffcc00;
  --danger: #ff4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.container { max-width: 500px; margin: 0 auto; padding: 20px; }

.header {
  text-align: center;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.header h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 10px;
  line-height: 1.2;
  letter-spacing: 0.05em;
}
.tagline { color: var(--text-muted); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.1em; }

.progress-bar { background: var(--border); height: 4px; margin: 20px 0 10px; overflow: hidden; }
.progress { background: var(--accent); height: 100%; width: 20%; transition: width 0.3s ease; }
.step-indicator { text-align: center; color: var(--text-muted); font-size: 0.75rem; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.1em; }

.form-container { position: relative; }
.step { display: none; animation: fadeIn 0.3s ease; }
.step.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.step h2 { font-family: 'Bebas Neue', sans-serif; font-size: 1.5rem; margin-bottom: 8px; color: var(--text); letter-spacing: 0.05em; }
.hint { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 20px; }

.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-size: 0.875rem; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }
.input-wrapper { display: flex; align-items: center; background: var(--bg-secondary); border: 1px solid var(--border); overflow: hidden; }
.input-wrapper input { flex: 1; padding: 14px; font-size: 1.125rem; background: transparent; border: none; color: var(--text); text-align: right; font-family: 'Inter', sans-serif; }
.input-wrapper input:focus { outline: none; }
.input-wrapper input::placeholder { color: var(--text-muted); }
.input-wrapper .unit { padding: 14px; color: var(--text-muted); font-size: 0.875rem; background: var(--bg-tertiary); }

select { width: 100%; padding: 14px; font-size: 1rem; background: var(--bg-secondary); border: 1px solid var(--border); color: var(--text); font-family: 'Inter', sans-serif; cursor: pointer; }
select:focus { outline: none; border-color: var(--accent); }

.expense-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.expense-grid .input-group { margin-bottom: 0; }
.expense-grid .input-wrapper input { font-size: 0.875rem; padding: 10px; }

.expense-total, .income-total, .sales-total, .profit-preview { text-align: right; font-size: 1.125rem; color: var(--accent); padding: 12px; background: var(--bg-secondary); border: 1px solid var(--border); margin-bottom: 20px; font-weight: 700; }

.income-section, .expense-section { margin-bottom: 24px; }
.income-section h3, .expense-section h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1rem; color: var(--text-muted); margin-bottom: 12px; letter-spacing: 0.1em; text-transform: uppercase; border-bottom: 1px solid var(--border); padding-bottom: 8px; }

.deduction-list { margin-bottom: 20px; }
.deduction-item { background: var(--bg-secondary); border: 1px solid var(--border); padding: 16px; margin-bottom: 2px; }
.checkbox-wrapper { display: flex; align-items: center; cursor: pointer; font-size: 0.9rem; }
.checkbox-wrapper input { display: none; }
.checkmark { width: 20px; height: 20px; border: 2px solid var(--accent); margin-right: 12px; position: relative; flex-shrink: 0; }
.checkbox-wrapper input:checked + .checkmark { background: var(--accent); }
.checkbox-wrapper input:checked + .checkmark::after { content: '✓'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--bg); font-size: 0.875rem; font-weight: 700; }

.deduction-input { margin-top: 12px; display: flex; align-items: center; }
.deduction-input input { flex: 1; padding: 10px; background: var(--bg); border: 1px solid var(--border); color: var(--text); font-size: 0.875rem; text-align: right; font-family: 'Inter', sans-serif; }
.deduction-input input:focus { outline: none; border-color: var(--accent); }
.deduction-input .unit { margin-left: 8px; color: var(--text-muted); }

.radio-group { display: flex; flex-direction: column; gap: 2px; }
.radio-wrapper { display: flex; align-items: center; cursor: pointer; font-size: 0.875rem; padding: 12px; background: var(--bg-secondary); border: 1px solid var(--border); }
.radio-wrapper input { display: none; }
.radio-mark { width: 18px; height: 18px; border: 2px solid var(--accent); margin-right: 12px; position: relative; flex-shrink: 0; }
.radio-wrapper input:checked + .radio-mark::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 8px; height: 8px; background: var(--accent); }

.info-box { padding: 16px; margin-bottom: 20px; border-left: 4px solid var(--border); background: var(--bg-secondary); }
.info-box.warning { border-left-color: var(--warning); }
.info-box.success { border-left-color: var(--success); }
.info-box.tip { border-left-color: var(--accent); }
.info-box h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1rem; color: var(--warning); margin-bottom: 8px; letter-spacing: 0.05em; }
.info-box.success h3 { color: var(--success); }
.info-box.tip h3 { color: var(--accent); }
.info-box p { font-size: 0.875rem; line-height: 1.6; }
.info-box ul { margin-left: 1.5rem; margin-top: 0.5rem; }
.info-box li { font-size: 0.875rem; margin-bottom: 0.25rem; }
.info-box .small { font-size: 0.75rem; color: var(--text-muted); margin-top: 8px; }

.btn { padding: 14px 28px; font-size: 1rem; font-weight: 700; border: none; cursor: pointer; transition: all 0.2s; text-transform: uppercase; letter-spacing: 0.1em; font-family: 'Inter', sans-serif; }
.next-btn { background: var(--accent); color: var(--bg); width: 100%; }
.next-btn:hover { background: #ff5500; }
.back-btn { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.back-btn:hover { border-color: var(--text-muted); color: var(--text); }
.btn-group { display: flex; gap: 12px; }
.btn-group .back-btn { flex: 1; }
.btn-group .next-btn { flex: 2; }

.result-card { background: var(--bg-secondary); border: 1px solid var(--border); padding: 20px; margin-bottom: 24px; }
.result-section { margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.result-section:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.result-section h3 { font-family: 'Bebas Neue', sans-serif; font-size: 0.875rem; color: var(--text-muted); margin-bottom: 12px; letter-spacing: 0.1em; text-transform: uppercase; }
.result-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 0.875rem; }
.result-row.total { font-weight: 700; font-size: 1rem; color: var(--accent); padding-top: 12px; border-top: 1px solid var(--border); }

.result-final { margin-top: 20px; padding: 20px; text-align: center; border: 2px solid var(--border); }
.result-final.pay { border-color: var(--danger); }
.result-final.refund { border-color: var(--success); }
.result-final .amount { font-family: 'Bebas Neue', sans-serif; font-size: 2.5rem; font-weight: 700; margin: 8px 0; letter-spacing: 0.05em; }
.result-final.pay .amount { color: var(--danger); }
.result-final.refund .amount { color: var(--success); }
.result-final .label { font-size: 0.875rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }

.next-actions { background: var(--bg-secondary); border: 1px solid var(--border); padding: 20px; margin-bottom: 24px; }
.next-actions h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1rem; margin-bottom: 12px; letter-spacing: 0.1em; }
.next-actions ol { margin-left: 20px; margin-bottom: 16px; }
.next-actions li { margin-bottom: 8px; font-size: 0.875rem; }
.external-btn { display: block; text-align: center; background: var(--accent); color: var(--bg); text-decoration: none; }
.external-btn:hover { background: #ff5500; }

.footer { text-align: center; padding: 30px 0; border-top: 1px solid var(--border); margin-top: 30px; }
.footer > p { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 20px; }
.other-tools { margin-top: 16px; }
.other-tools p { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.1em; }
.other-tools a { display: inline-block; margin: 4px; padding: 8px 16px; background: transparent; color: var(--accent); text-decoration: none; border: 1px solid var(--border); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.other-tools a:hover { border-color: var(--accent); }

@media (max-width: 400px) {
  .expense-grid { grid-template-columns: 1fr; }
  .header h1 { font-size: 1.75rem; }
}