:root {
    --khaki-dark: #3C3B27;
    --khaki: #4B5320;
    --khaki-light: #6B7548;
    --sand: #C2B280;
    --sand-light: #E8DCC4;
    --camo-olive: #8A9A5B;
    --camo-grey: #5C5C4E;
    --danger: #8B2E2E;
    --danger-bg: #f3d9d9;
    --text-dark: #2A2A1F;
    --paper: #F4EFE2;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--sand-light);
    color: var(--text-dark);
    min-height: 100vh;
  }

  header.banner {
    background: linear-gradient(135deg, var(--khaki-dark), var(--khaki) 55%, var(--camo-olive));
    background-size: 200% 200%;
    padding: 2.2rem 1.5rem;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.35);
    border-bottom: 4px solid var(--khaki-dark);
    position: relative;
    overflow: hidden;
  }

  header.banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 15% 30%, rgba(255,255,255,0.05) 0 8%, transparent 9%),
      radial-gradient(circle at 80% 60%, rgba(0,0,0,0.12) 0 12%, transparent 13%),
      radial-gradient(circle at 45% 80%, rgba(255,255,255,0.04) 0 6%, transparent 7%);
  }

  header.banner h1 {
    margin: 0;
    color: var(--sand-light);
    letter-spacing: 0.35em;
    font-size: 1.8rem;
    font-weight: 800;
    text-shadow: 2px 2px 0 rgba(0,0,0,0.4);
    position: relative;
  }

  header.banner p {
    margin: 0.5rem 0 0;
    color: var(--sand);
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    text-transform: uppercase;
    position: relative;
  }

  main {
    max-width: 560px;
    margin: 2rem auto;
    padding: 0 1rem 3rem;
  }

  .card {
    background: var(--paper);
    border: 2px solid var(--khaki);
    border-radius: 6px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
    padding: 1.8rem;
  }

  .card h2 {
    margin-top: 0;
    font-size: 1.05rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--khaki-dark);
    border-bottom: 2px solid var(--sand);
    padding-bottom: 0.6rem;
  }

  .coord-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.4rem;
  }

  .coord-group h3 {
    grid-column: 1 / -1;
    margin: 0.4rem 0 0.2rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--camo-grey);
  }

  .paste-row {
    grid-column: 1 / -1;
  }

  .paste-input {
    border-style: dashed !important;
    background: var(--sand-light) !important;
    font-style: italic;
  }

  .paste-input::placeholder {
    font-style: italic;
    opacity: 0.6;
  }

  label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--khaki-dark);
  }

  input[type="text"] {
    width: 100%;
    padding: 0.6rem 0.7rem;
    font-size: 1rem;
    border: 2px solid var(--khaki-light);
    border-radius: 4px;
    background: #fff;
    color: var(--text-dark);
    transition: border-color 0.15s, background 0.15s;
  }

  input[type="text"]:focus {
    outline: none;
    border-color: var(--khaki-dark);
  }

  input[type="text"].invalid {
    border-color: var(--danger);
    background: var(--danger-bg);
  }

  .hint {
    font-size: 0.7rem;
    color: var(--camo-grey);
    margin-top: 0.6rem;
    text-align: right;
  }

  .info-box {
    background: var(--sand-light);
    border: 1px dashed var(--khaki-light);
    border-radius: 5px;
    padding: 0.9rem 1rem;
    margin-bottom: 1.4rem;
    font-size: 0.8rem;
    line-height: 1.45;
    color: var(--text-dark);
  }

  .info-box p {
    margin: 0 0 0.5rem;
  }

  .info-box p:last-child {
    margin-bottom: 0;
  }

  .info-box .note {
    font-style: italic;
    color: var(--camo-grey);
  }

  .result {
    margin-top: 1.6rem;
    padding: 1.2rem;
    background: var(--khaki-dark);
    border-radius: 5px;
    text-align: center;
    color: var(--sand-light);
  }

  .result.incomplete {
    background: var(--camo-grey);
  }

  .result .meters {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 0.05em;
  }

  .result .miles {
    font-size: 0.95rem;
    color: var(--sand);
    margin-top: 0.3rem;
  }

  .result .status {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.85;
  }

  .azimuth-block {
    margin-top: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.4rem;
  }

  .compass {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
  }

  .compass svg {
    width: 100%;
    height: 100%;
  }

  .compass .needle {
    transform-origin: 50% 50%;
    transition: transform 0.1s ease-out;
  }

  .azimuth-value {
    text-align: left;
  }

  .azimuth-value .deg {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--sand-light);
    letter-spacing: 0.03em;
  }

  .azimuth-value .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--sand);
    margin-top: 0.2rem;
  }

  footer {
    text-align: center;
    font-size: 0.7rem;
    color: var(--camo-grey);
    margin-top: 1.5rem;
    letter-spacing: 0.08em;
  }

  .credit {
    text-align: center;
    font-size: 0.75rem;
    color: var(--camo-grey);
    margin-top: 1.4rem;
  }

  .credit a {
    color: var(--khaki-dark);
    font-weight: 600;
    text-decoration: underline;
  }

  .credit a:hover {
    color: var(--khaki);
  }

  .lang-switch {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.3rem;
    z-index: 2;
  }

  .lang-btn {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--sand);
    color: var(--sand-light);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 0.3rem 0.6rem;
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
  }

  .lang-btn:hover {
    background: rgba(0,0,0,0.4);
  }

  .lang-btn.active {
    background: var(--sand);
    color: var(--khaki-dark);
  }