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

    :root {
      --ink:      #1A1A2E;
      --ink-mid:  #3D3D5C;
      --ink-muted:#8888A8;
      --paper:    #FAF8F3;
      --paper-2:  #F2EFE7;
      --paper-3:  #E8E3D8;
      --rule:     #D8D3C8;
      --accent:   #2A4494;
      --accent-2: #1A2F6F;
      --red:      #C0392B;
      --green:    #1A7A4A;
      --shadow:   rgba(26,26,46,0.08);
    }

    html { scroll-behavior: smooth; }

    body {
      /*font-family: 'IBM Plex Mono', monospace;*/
      /*background: #EEF2F9;*/
      color: var(--ink);
      min-height: 100vh;
      /*padding: 3rem 1.5rem 5rem;*/
      position: relative;
    }

    .container {
      width: 100%;
      max-width: 740px;
      margin: 0 auto;
      animation: fadeIn 0.7s ease both;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* ── Header ── */
    /*header {
      text-align: center;
      padding: 2.5rem 0 3rem;
      border-bottom: 2px solid var(--ink);
      margin-bottom: 2.5rem;
      position: relative;
    }*/

    .stamp {
      display: inline-block;
      font-size: 0.6rem;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: var(--accent);
      border: 1px solid var(--accent);
      padding: 0.25rem 0.75rem;
      margin-bottom: 1.2rem;
    }

    /*h1 {
      font-family: 'Lora', serif;
      font-size: clamp(2.2rem, 5vw, 3.6rem);
      font-weight: 700;
      line-height: 1.05;
      color: var(--ink);
      letter-spacing: -0.02em;
    }

    h1 em {
      font-style: italic;
      color: var(--accent);
    }*/

    .subtitle {
      margin-top: 0.8rem;
      font-size: 0.7rem;
      color: var(--ink-muted);
      letter-spacing: 0.08em;
    }

    .header-rule {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-top: 1.5rem;
      color: var(--ink-muted);
      font-size: 0.6rem;
      letter-spacing: 0.2em;
    }
    .header-rule::before, .header-rule::after {
      content: ''; flex: 1; height: 1px; background: var(--rule);
    }

    /* ── Card ── */
    .card {
      background: #fff;
      border: 1px solid var(--rule);
      border-top: 3px solid var(--accent);
      padding: 2.5rem;
      margin-bottom: 1.5rem;
      box-shadow: 0 2px 16px var(--shadow), 0 1px 3px var(--shadow);
      position: relative;
    }

    .card-label {
      /*font-size: 0.58rem;*/
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .card-label::after { content: ''; flex: 1; height: 1px; background: var(--paper-3); }

    /* ── Form ── */
    .form-grid { display: grid; gap: 1.5rem; }

    .field { display: flex; flex-direction: column; gap: 0.45rem; }

    label {
      font-size: 0.8rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink-muted);
    }

    .input-wrap { position: relative; display: flex; align-items: center; }

    .prefix {
      position: absolute; left: 0.9rem;
      font-size: 0.9rem; color: var(--accent);
      font-weight: 500; pointer-events: none;
    }

    input[type="text"], input[type="number"], select {
      width: 100%;
      background: var(--paper);
      border: 1px solid var(--rule);
      border-bottom: 2px solid var(--paper-3);
      color: var(--ink);
      font-family: 'IBM Plex Mono', monospace;
      font-size: 0.95rem;
      padding: 0.8rem 1rem;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
      border-radius: 0;
      -moz-appearance: textfield;
    }
    input[type="text"].with-prefix { padding-left: 2.2rem; }
    input:focus, select:focus {
      border-color: var(--accent);
      border-bottom-color: var(--accent);
      box-shadow: 0 2px 0 var(--accent);
      background: #fff;
    }
    input::placeholder { color: var(--ink-muted); opacity: 0.6; }
    input[type=number]::-webkit-inner-spin-button,
    input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; }

    select {
      appearance: none; cursor: pointer;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%232A4494' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 0.9rem center;
      padding-right: 2.2rem;
    }

    .row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
    .hint { font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.15rem; }

    .btn {
      width: 100%; padding: 1rem 1.5rem;
      background: var(--accent);
      color: #fff;
      border: none;
      font-family: 'IBM Plex Mono', monospace;
      font-size: 1rem; font-weight: 500;
      letter-spacing: 0.25em; text-transform: uppercase;
      cursor: pointer; margin-top: 1rem;
      transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
      box-shadow: 0 4px 0 var(--accent-2);
    }
    .btn:hover { background: var(--accent-2); }
    .btn:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--accent-2); }

    /* ── Results ── */
    .results { display: none; }
    .results.visible { display: block; animation: fadeIn 0.45s ease both; }

    /* Hero */
    .result-hero {
      text-align: center;
      padding: 2rem 1rem 1.5rem;
      background: linear-gradient(135deg, var(--paper) 0%, var(--paper-2) 100%);
      border: 1px solid var(--rule);
      margin-bottom: 1.5rem;
      position: relative;
      overflow: hidden;
    }
    .result-hero::before {
      content: 'COP';
      position: absolute;
      right: -0.5rem; top: -1rem;
      font-family: 'Lora', serif;
      font-size: 6rem;
      font-weight: 700;
      color: var(--accent);
      opacity: 0.04;
      line-height: 1;
      pointer-events: none;
    }
    .r-label {
      font-size: 1rem; letter-spacing: 0.2em;
      text-transform: uppercase; color: var(--ink-muted); margin-bottom: 0.5rem;
    }
    .r-value {
      font-family: 'Lora', serif;
      font-size: clamp(2.2rem, 6vw, 3.8rem);
      font-weight: 700; color: var(--accent); line-height: 1;
    }
    .r-sub { font-size: 1rem; color: var(--ink-muted); margin-top: 0.6rem; line-height: 1.6; }

    /* Stats */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
      gap: 1px;
      background: var(--rule);
      border: 1px solid var(--rule);
      margin-bottom: 1.5rem;
    }
    .stat-box {
      background: #fff; padding: 1.1rem 1rem;
    }
    .s-label {
      font-size: 0.58rem; letter-spacing: 0.15em;
      text-transform: uppercase; color: var(--ink-muted); margin-bottom: 0.35rem;
    }
    .s-val { font-size: 0.9rem; font-weight: 500; color: var(--ink); }
    .s-val.up { color: var(--red); }
    .s-val.dn { color: var(--green); }

    /* Bar */
    .inflation-bar { margin-bottom: 0; }
    .bar-label {
      display: flex; justify-content: space-between;
      font-size: 1rem; color: var(--ink-muted); margin-bottom: 0.45rem;
    }
    .bar-track {
      height: 8px; background: var(--paper-2);
      border: 1px solid var(--rule); overflow: hidden;
    }
    .bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), var(--red));
      transition: width 1s cubic-bezier(0.22,1,0.36,1);
      width: 0%;
    }

    /* Table */
    .table-wrap {
      max-height: 420px; overflow-y: auto;
      border: 1px solid var(--rule);
    }
    .table-wrap::-webkit-scrollbar { width: 5px; }
    .table-wrap::-webkit-scrollbar-track { background: var(--paper-2); }
    .table-wrap::-webkit-scrollbar-thumb { background: var(--rule); }

    .month-table { width: 100%; border-collapse: collapse; font-size: 0.73rem; }
    .month-table thead { position: sticky; top: 0; background: var(--ink); z-index: 1; }
    .month-table th {
      text-align: center; color: #fff;
      font-size: 0.58rem; letter-spacing: 0.15em; text-transform: uppercase;
      padding: 0.65rem 0.9rem; font-weight: 500;
    }
    .month-table td { padding: 0.55rem 0.9rem; border-bottom: 1px solid var(--paper-3); text-align: center;}
    .month-table tr:hover td { background: var(--paper); }
    .month-table tr:last-child td { border-bottom: none; }
    .month-table td:nth-child(2),
    .month-table td:nth-child(3) { color: var(--ink-muted); font-size: 0.68rem; }
    .month-table td:last-child { text-align: center; color: var(--accent); font-weight: 500; }

    .month-table tr.year-sep td {
      background: var(--paper-2);
      color: var(--accent); font-size: 0.62rem;
      letter-spacing: 0.12em; padding: 0.4rem 0.9rem;
      border-bottom: 1px solid var(--rule);
      font-weight: 500;
    }

    .badge {
      display: inline-block; padding: 0.1rem 0.45rem;
      font-size: 0.55rem; letter-spacing: 0.1em;
      border: 1px solid currentColor; color: var(--accent);
      vertical-align: middle; margin-left: 0.3rem;
    }

    footer {
      text-align: center; margin-top: 3rem;
      font-size: 0.8rem; color: var(--ink-muted);
      letter-spacing: 0.1em; line-height: 2;
      border-top: 1px solid var(--rule); padding-top: 1.5rem;
    }

    @media (max-width: 520px) {
      .row-2 { grid-template-columns: 1fr; }
      .card { padding: 1.5rem; }
    }

    @keyframes shake {
      0%,100% { transform: translateX(0); }
      20%,60%  { transform: translateX(-5px); }
      40%,80%  { transform: translateX(5px); }
    }