/* ═══════════════════════════════════════════════════════════
   퇴직금 계산기 — style.css
   ═══════════════════════════════════════════════════════════ */

/* ─── CSS 변수 ─── */
:root {
    --bg: #F6F5F0;
    --surface: #FFFFFF;
    --navy: #1B2B5B;
    --navy-mid: #243670;
    --navy-light: #2D4080;
    --gold: #B8922A;
    --gold-bg: #FBF4E3;
    --gold-border: #E8CC82;
    --text: #1A1F36;
    --text-muted: #6B7280;
    --border: #E4E0D8;
    --error: #b91c1c;
    --indigo-bg: #EEF2FF;
    --indigo-border: #C7D2FE;
    --indigo-text: #3730A3;
    --shadow: 0 2px 6px rgba(27,43,91,0.08), 0 8px 24px rgba(27,43,91,0.06);
    --radius: 14px;
    --radius-sm: 8px;
  }
  
  /* ─── RESET ─── */
  * { margin: 0; padding: 0; box-sizing: border-box; }
  
  body {
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
  }
  
  /* ─── HEADER ─── */
  header {
    background: var(--navy);
    padding: 44px 24px 36px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  header::before {
    content: '';
    position: absolute;
    top: -80px; right: -60px;
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(184,146,42,0.18) 0%, transparent 65%);
    pointer-events: none;
  }
  header::after {
    content: '';
    position: absolute;
    bottom: -60px; left: -80px;
    width: 240px; height: 240px;
    background: radial-gradient(circle, rgba(184,146,42,0.10) 0%, transparent 65%);
    pointer-events: none;
  }
  .header-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(184,146,42,0.18);
    border: 1px solid rgba(184,146,42,0.35);
    color: #F0CC6A;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    padding: 4px 13px;
    border-radius: 20px;
    margin-bottom: 18px;
    position: relative; z-index: 1;
  }
  header h1 {
    font-family: 'Noto Serif KR', serif;
    font-size: 30px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    position: relative; z-index: 1;
  }
  header p {
    color: rgba(255,255,255,0.52);
    font-size: 13px;
    font-weight: 300;
    letter-spacing: 0.03em;
    position: relative; z-index: 1;
  }
  
  /* ─── MAIN ─── */
  main {
    max-width: 700px;
    margin: 0 auto;
    padding: 32px 18px 72px;
  }
  
  /* ─── CARD ─── */
  .card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    margin-bottom: 18px;
    overflow: hidden;
  }
  .card-header {
    padding: 18px 22px 15px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .card-icon {
    width: 30px; height: 30px;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
  }
  .card-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.01em;
  }
  .card-body { padding: 22px; }
  
  /* ─── FORM ─── */
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .form-group { display: flex; flex-direction: column; gap: 5px; }
  .form-group.full { grid-column: 1 / -1; }
  
  label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
  }
  input {
    height: 44px;
    padding: 0 13px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 14px;
    color: var(--text);
    background: #FAFAF7;
    transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
    outline: none;
    width: 100%;
  }
  input:focus {
    border-color: var(--navy);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(27,43,91,0.09);
  }
  input.is-error { border-color: var(--error); }
  .input-hint { font-size: 11px; color: var(--text-muted); }
  .error-msg { font-size: 11px; color: var(--error); min-height: 16px; }
  
  /* ─── TENURE BOX ─── */
  .tenure-box {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--indigo-bg);
    border: 1px solid var(--indigo-border);
    border-radius: var(--radius-sm);
    padding: 11px 16px;
  }
  .tenure-label { font-size: 12px; color: var(--indigo-text); font-weight: 600; }
  .tenure-value { font-size: 13px; font-weight: 700; color: var(--indigo-text); }
  
  /* ─── BUTTON ─── */
  .btn-calc {
    width: 100%;
    height: 52px;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: transform 0.15s, box-shadow 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 6px;
    box-shadow: 0 4px 18px rgba(27,43,91,0.28);
  }
  .btn-calc:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(27,43,91,0.38);
  }
  .btn-calc:active { transform: translateY(0); }
  
  /* ─── RESULTS ─── */
  #results { display: none; }
  
  .result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .result-item {
    background: #F7F8FB;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 18px;
  }
  .result-item.span-full { grid-column: 1 / -1; }
  .result-item.is-primary {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    border-color: transparent;
  }
  .result-item.is-tax {
    background: var(--gold-bg);
    border-color: var(--gold-border);
  }
  .result-item.is-net {
    background: #F0FDF4;
    border-color: #A7F3D0;
  }
  
  .r-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
  }
  .result-item.is-primary .r-label { color: rgba(255,255,255,0.55); }
  .result-item.is-tax .r-label     { color: #92400E; }
  .result-item.is-net .r-label     { color: #065F46; }
  
  .r-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
  }
  .result-item.is-primary .r-value { color: #fff; font-size: 24px; }
  .result-item.is-tax .r-value     { color: #78350F; }
  .result-item.is-net .r-value     { color: #065F46; font-size: 22px; }
  
  .r-sub {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 3px;
  }
  .result-item.is-primary .r-sub { color: rgba(255,255,255,0.45); }
  .result-item.is-tax .r-sub     { color: #92400E; opacity: 0.7; }
  .result-item.is-net .r-sub     { color: #065F46; opacity: 0.65; }
  
  /* ─── BREAKDOWN TABLE ─── */
  .breakdown-table {
    border-radius: 10px;
    border: 1px solid var(--border);
    overflow: hidden;
  }
  .bd-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    gap: 12px;
  }
  .bd-row:last-child { border-bottom: none; background: #F7F8FB; }
  .bd-row.section-sep {
    border-top: 2px solid var(--border);
    background: #FAFAF7;
  }
  .bd-label { color: var(--text-muted); flex: 1; }
  .bd-label strong { color: var(--text); font-weight: 600; }
  .bd-value {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    text-align: right;
    white-space: nowrap;
  }
  .bd-value.is-minus { color: var(--gold); }
  .bd-value.is-total { color: var(--navy); font-size: 14px; }
  
  /* ─── NOTICE ─── */
  .notice {
    display: flex;
    gap: 9px;
    align-items: flex-start;
    background: #FFFBEB;
    border: 1px solid #FCD34D;
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 12px;
    color: #78350F;
    margin-top: 14px;
    line-height: 1.55;
  }
  .notice-icon { flex-shrink: 0; font-size: 14px; margin-top: 1px; }
  
  /* ─── CHART ─── */
  .chart-wrap {
    position: relative;
    width: 220px;
    margin: 0 auto 20px;
  }
  .chart-center {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
    line-height: 1.3;
  }
  .chart-center-top {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  .chart-center-val {
    font-size: 15px;
    font-weight: 700;
    color: var(--navy);
    margin-top: 3px;
  }
  
  .chart-legend {
    display: flex;
    justify-content: center;
    gap: 28px;
  }
  .legend-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    color: var(--text-muted);
  }
  .legend-dot {
    width: 9px; height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .legend-pct { font-weight: 700; color: var(--text); }
  
  /* ─── ANIMATION ─── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .fade-up { animation: fadeUp 0.38s ease both; }
  .fade-up.d1 { animation-delay: 0.06s; }
  .fade-up.d2 { animation-delay: 0.12s; }
  
  /* ─── FOOTER ─── */
  footer {
    text-align: center;
    padding: 18px;
    font-size: 11px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
  }
  
  /* ─── RESPONSIVE ─── */
  @media (max-width: 480px) {
    header h1 { font-size: 24px; }
    .form-grid { grid-template-columns: 1fr; }
    .result-grid { grid-template-columns: 1fr; }
    .result-item.span-full { grid-column: 1; }
  }