:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --line: #d6e0ef;
  --text: #1a2436;
  --muted: #5c6a83;
  --accent: #0b6ca8;
  --accent-2: #0f9158;
  --danger: #ad2e2e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eef6ff 0%, var(--bg) 40%);
}

.wrap {
  max-width: 980px;
  margin: 28px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 10px 24px rgba(16, 35, 61, 0.08);
}

h1 { margin: 0 0 8px; }
h2 { margin: 16px 0 8px; font-size: 1.1rem; }
h3 { margin: 0 0 8px; }

.sub {
  margin: 0 0 16px;
  color: var(--muted);
}

.pin-hole-form {
  display: grid;
  gap: 14px;
}

.overlay-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fbfdff;
}

.pin-hole-canvas {
  margin: 0;
  position: relative;
  width: 100%;
  height: auto;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: visible;
  background: #fff;
  display: grid;
  place-items: center;
}

.pin-hole-canvas img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  position: relative;
  z-index: 0;
}

.input-groups {
  position: absolute;
  gap: 6px;
  padding: 6px;
  pointer-events: none;
  z-index: 10;
  width: 100%;
  height: 100%;
}

.input-group {
  position: relative;
  display: block;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px 0 6px 6px;
  min-inline-size: 0;
  min-height: 100px;
  min-width: 150px;
  /* background: rgba(255, 255, 255, 0.96); */
  pointer-events: auto;
  box-shadow: 0 2px 8px rgba(15, 45, 86, 0.12);
}
.input-group legend {
  position: absolute;
  top: 2px;
  left: 6px;
  right: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0;
  padding: 1px 6px;
  border-bottom: 1px solid var(--line);
}

.compact-label,
.compact-label_nominal,
.compact-label_tol_sup,
.compact-label_tol_inf {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px;
  align-items: center;
  font-size: 0.5rem;
}

.compact-label_nominal {
  position: absolute;
  top: 48%;
  left: 2%;
  width: 68%;
}

.compact-label_tol_sup {
  position: absolute;
  top: 25%;
  left: 20%;
  width: 68%;
}

.compact-label_tol_inf {
  position: absolute;
  bottom: 5%;
  left: 20%;
  width: 68%;
}

.compact-label input,
.compact-label_nominal input,
.compact-label_tol_sup input,
.compact-label_tol_inf input {
  padding: 1px 4px;
  font-size: 0.75rem;
  width: 100%;
  height: 22px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.92rem;
}

input {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.9rem;
}

.extra-inputs {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fbfdff;
}

.extra-inputs h2 {
  grid-column: 1 / -1;
  margin: 0;
}

.dropzone-wrap {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}

.dropzone {
  border: 2px dashed #9bc2df;
  background: #f7fbff;
  border-radius: 12px;
  padding: 12px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone.is-over {
  border-color: #0b6ca8;
  background: #e9f5ff;
}

.dropzone-title {
  margin: 0 0 6px;
  font-weight: 700;
}

.dropzone-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.dropzone-input {
  display: none;
}

.dropzone-preview {
  margin-top: 10px;
  max-width: 100%;
  max-height: 190px;
  border-radius: 8px;
  border: 1px solid var(--line);
  object-fit: contain;
  background: #fff;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 2px;
}

button {
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 10px 16px;
  cursor: pointer;
}

button:hover { opacity: 0.92; }

.link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
}

.error {
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid #efc7c7;
  background: #fdeeee;
  border-radius: 10px;
  color: var(--danger);
}

.results {
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.incoming-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 12px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 12px;
}

.result-grid article {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #fbfdff;
}

.result-grid p {
  margin: 4px 0;
}

.histogram-block {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #fff;
}

.histogram-block h3 {
  margin: 0 0 10px;
}

.histogram-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
}

@media (max-width: 860px) {
  .extra-inputs {
    grid-template-columns: 1fr 1fr;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .input-groups {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .extra-inputs {
    grid-template-columns: 1fr;
  }

  .dropzone-wrap {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
  }

  .input-groups {
    gap: 8px;
    padding: 8px;
  }

  .input-group {
    min-width: auto;
  }
}