:root {
  --black: #050505;
  --black-2: #0b0b0b;
  --surface: #111111;
  --surface-2: #181818;
  --surface-3: #222222;
  --white: #f7f7f2;
  --muted: #b7b7ad;
  --line: rgba(247, 247, 242, 0.20);
  --line-strong: rgba(247, 247, 242, 0.58);
  --yellow: #ffe500;
  --yellow-2: #f7c600;
  --red: #ff3b30;
  --red-dark: #3a0d0b;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-panel: 0 24px 60px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--white);
  font-family: "Barlow", sans-serif;
  background:
    linear-gradient(90deg, rgba(247, 247, 242, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(247, 247, 242, 0.025) 1px, transparent 1px),
    var(--black);
  background-size: 64px 64px, 64px 64px, auto;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 0 62%, rgba(255, 229, 0, 0.10) 62% 63%, transparent 63% 100%),
    linear-gradient(180deg, rgba(255, 229, 0, 0.08), transparent 28%);
}

.app-shell {
  position: relative;
  max-width: 1720px;
  margin-inline: auto;
}

.hero-strip {
  border-bottom: 2px solid var(--white);
  background: rgba(5, 5, 5, 0.96);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
}

.eyebrow,
.section-kicker,
.mini-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--yellow);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 1.1rem;
  height: 0.28rem;
  background: var(--yellow);
}

.app-title,
.section-heading h2,
.small-heading {
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-weight: 900;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.app-title {
  max-width: 980px;
  margin-top: 0.25rem;
  font-size: clamp(2rem, 5.4vw, 5.1rem);
  line-height: 0.92;
}

.app-subtitle,
.text-secondary-emphasis {
  color: var(--muted) !important;
}

.device-warning {
  display: grid;
  gap: 0.15rem;
  min-width: min(100%, 320px);
  padding: 1rem 1.1rem;
  border: 2px solid var(--yellow);
  color: var(--black);
  background: var(--yellow);
}

.device-warning span {
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.device-warning strong {
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: clamp(1.15rem, 2.2vw, 1.65rem);
  line-height: 1;
  text-transform: uppercase;
}

.surface-card,
.glass-card {
  position: relative;
  padding: clamp(1rem, 2vw, 1.35rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(24, 24, 24, 0.98), rgba(12, 12, 12, 0.98));
  box-shadow: var(--shadow-panel);
}

.surface-card::after,
.glass-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 1.25rem;
  right: 1.25rem;
  height: 3px;
  background: var(--yellow);
}

.operator-header {
  margin-top: 1rem;
}

.compact-heading {
  margin-bottom: 0.8rem;
}

.section-heading {
  margin-bottom: 1rem;
}

.section-heading h2,
.small-heading {
  margin: 0.2rem 0 0;
  font-size: clamp(1.05rem, 2vw, 1.5rem);
}

.form-label {
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.control-neon,
.form-control.control-neon,
.form-select.control-neon {
  min-height: 48px;
  color: var(--white);
  border: 1px solid var(--line);
  border-radius: 0;
  background-color: #080808;
  font-weight: 700;
}

.control-neon:focus {
  color: var(--white);
  border-color: var(--yellow);
  background-color: #0b0b0b;
  box-shadow: 0 0 0 0.16rem rgba(255, 229, 0, 0.22);
}

.form-select.control-neon option {
  color: #050505;
  background: #ffffff;
}

.noise-status-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.9rem;
  border: 1px solid var(--line-strong);
  background: #080808;
}

.noise-status-box strong {
  display: block;
  margin-top: 0.12rem;
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: 1.15rem;
  line-height: 1;
  text-transform: uppercase;
}

.noise-status-box.is-active strong {
  color: var(--yellow);
}

.noise-status-box .form-range {
  grid-column: 1 / 2;
}

.volume-readout {
  color: var(--yellow);
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: 0.95rem;
}

.panel-topline {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.mode-pill,
.step-counter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 44px;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--yellow);
  color: var(--black);
  background: var(--yellow);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.current-display {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.display-cell {
  min-height: 112px;
  padding: 1rem;
  border: 1px solid var(--line-strong);
  background: #070707;
}

.display-cell span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

.display-cell strong {
  display: block;
  margin-top: 0.45rem;
  color: var(--white);
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: clamp(2.1rem, 8vw, 4.6rem);
  letter-spacing: -0.055em;
  line-height: 0.92;
  text-transform: uppercase;
}

.display-frequency,
.display-db {
  border-color: var(--yellow);
}

.display-frequency strong,
.display-db strong {
  color: var(--yellow);
}

.status-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  padding: 1rem;
  border: 1px solid var(--line-strong);
  background: #0a0a0a;
}

.status-label {
  color: var(--yellow);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

#examStatus {
  color: var(--white);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 800;
}

.response-zone {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.session-actions,
.utility-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.btn {
  min-height: 52px;
  border-radius: 0;
  font-size: 0.95rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.btn-primary-action,
.btn-neon {
  border: 2px solid var(--yellow);
  color: var(--black);
  background: var(--yellow);
}

.btn-primary-action:hover,
.btn-neon:hover {
  border-color: var(--white);
  color: var(--black);
  background: var(--white);
}

.btn-secondary-action,
.btn-neon-outline {
  border: 1px solid var(--line-strong);
  color: var(--white);
  background: #0a0a0a;
}

.btn-secondary-action:hover,
.btn-neon-outline:hover {
  border-color: var(--yellow);
  color: var(--black);
  background: var(--yellow);
}

.btn-response {
  min-height: 92px;
  border: 2px solid var(--white);
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: clamp(1.55rem, 5vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.btn-heard,
.btn-success {
  color: var(--black);
  background: var(--yellow);
  border-color: var(--yellow);
}

.btn-heard:hover,
.btn-success:hover {
  color: var(--black);
  background: var(--white);
  border-color: var(--white);
}

.btn-not-heard,
.btn-danger {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.btn-not-heard:hover,
.btn-danger:hover {
  color: var(--white);
  background: #d42018;
  border-color: #d42018;
}

.manual-panel {
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--black-2);
}

.complete-switch {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 42px;
  color: var(--muted);
  font-weight: 700;
}

.complete-switch .form-check-input {
  width: 3rem;
  height: 1.5rem;
  border-color: var(--line-strong);
  background-color: #080808;
}

.complete-switch .form-check-input:checked {
  border-color: var(--yellow);
  background-color: var(--yellow);
}

.app-message {
  min-height: 34px;
  color: var(--yellow);
  font-weight: 900;
}

.app-message.error {
  color: #ff9c96;
}

.app-message.success {
  color: var(--yellow);
}

.form-range::-webkit-slider-thumb {
  background: var(--yellow);
}

.form-range::-moz-range-thumb {
  background: var(--yellow);
}

.avg-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.avg-grid > div {
  padding: 0.9rem;
  border: 1px solid var(--line-strong);
  background: #090909;
}

.avg-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.avg-grid strong {
  color: var(--white);
  font-family: "Archivo Black", "Barlow", sans-serif;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
}

.result-log {
  display: grid;
  gap: 0.65rem;
  max-height: 490px;
  overflow: auto;
  padding-right: 0.25rem;
}

.result-item {
  padding: 0.85rem;
  border: 1px solid var(--line);
  background: #090909;
}

.result-item strong {
  display: block;
  color: var(--white);
  font-weight: 900;
}

.result-item span {
  color: var(--muted);
  font-size: 0.88rem;
}

.result-item.heard {
  border-left: 6px solid var(--yellow);
}

.result-item.not-heard {
  border-left: 6px solid var(--red);
}

.operator-note {
  display: grid;
  gap: 0.35rem;
  padding: 0.95rem;
  border: 1px solid var(--line);
  background: #080808;
  color: var(--muted);
}

.operator-note strong {
  color: var(--yellow);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.audiogram-canvas {
  display: block;
  width: 100%;
  min-height: 340px;
  border: 1px solid var(--line-strong);
  background: #050505;
}

.legend-inline {
  display: inline-flex;
  gap: 1rem;
  color: var(--muted);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.legend-dot {
  display: inline-block;
  width: 0.8rem;
  height: 0.8rem;
  margin-right: 0.35rem;
}

.right-ear {
  background: var(--yellow);
}

.left-ear {
  background: var(--white);
  border: 1px solid var(--line-strong);
}

.result-table-wrap {
  max-height: 440px;
  border: 1px solid var(--line-strong);
}

.result-table {
  --bs-table-bg: #080808;
  --bs-table-striped-bg: #111111;
  --bs-table-hover-bg: #1b1b1b;
  border-color: var(--line);
  color: var(--white);
  font-size: 0.9rem;
}

.result-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: var(--black);
  background: var(--yellow);
  border-bottom: 2px solid var(--white);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-soft {
  display: inline-flex;
  padding: 0.35rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-heard {
  color: var(--black);
  background: var(--yellow);
}

.badge-not-heard {
  color: var(--white);
  background: var(--red);
}

.app-footer {
  color: var(--muted);
}

@media (min-width: 768px) {
  .hero-grid,
  .panel-topline,
  .status-rail {
    grid-template-columns: 1fr auto;
    display: grid;
  }

  .current-display {
    grid-template-columns: 1fr 1.35fr 1fr 0.75fr;
  }

  .response-zone {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.25rem;
  }

  .session-actions,
  .utility-actions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 767.98px) {
  .surface-card,
  .glass-card {
    border-radius: 14px;
  }

  .noise-status-box,
  .session-actions,
  .utility-actions {
    grid-template-columns: 1fr;
  }

  .noise-status-box .form-range {
    grid-column: auto;
  }

  .app-title {
    font-size: clamp(2rem, 13vw, 3.4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   SINGLE-SCREEN — xl+
   Reduce tamaños para que el examen quepa sin scroll.
   No se usa overflow ni flex-lock: el contenido simplemente
   cabe gracias a las dimensiones más compactas.
   ============================================================ */
@media (min-width: 1200px) {
  /* Márgenes del encabezado de operador más ajustados */
  .operator-header {
    margin-top:    0.45rem !important;
    margin-bottom: 0.45rem !important;
  }

  /* Espaciado interno del panel de examen */
  .exam-card .mt-3 { margin-top: 0.45rem !important; }
  .exam-card .mt-2 { margin-top: 0.3rem  !important; }

  /* Celdas de estado más compactas */
  .display-cell {
    min-height: 62px;
    padding: 0.5rem 0.65rem;
  }

  .display-cell strong {
    margin-top: 0.18rem;
    font-size: clamp(1.2rem, 2.1vw, 2.0rem);
  }

  /* Botones de respuesta más compactos */
  .btn-response {
    min-height: 52px;
    font-size: clamp(1.05rem, 2.0vw, 1.75rem);
  }

  /* Hero strip ultra compacto */
  .hero-strip .container-fluid {
    padding-top:    0.4rem !important;
    padding-bottom: 0.4rem !important;
  }

  .app-title {
    font-size: clamp(1.25rem, 2.1vw, 2.1rem);
    line-height: 0.95;
    margin-top: 0.08rem;
  }

  .app-subtitle { display: none; }

  .eyebrow { font-size: 0.58rem; }

  /* Encabezados de sección más ajustados */
  .section-heading { margin-bottom: 0.45rem; }
}

/* Desktop density: the operator view must fit in one normal PC viewport. */
.right-stack {
  display: grid;
  gap: 1rem;
}

.table-heading {
  margin-bottom: 0.65rem;
}

@media (min-width: 1200px) {
  .hero-strip .container-fluid {
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
  }

  .app-title {
    max-width: 760px;
    font-size: clamp(1.65rem, 2.8vw, 2.85rem);
    line-height: 0.95;
  }

  .app-subtitle {
    font-size: 0.9rem;
  }

  .device-warning {
    min-width: 260px;
    padding: 0.65rem 0.85rem;
  }

  .device-warning strong {
    font-size: 1.18rem;
  }

  .operator-header {
    margin-top: 0.65rem;
  }

  .surface-card,
  .glass-card {
    padding: 0.85rem;
    border-radius: 14px;
  }

  .surface-card::after,
  .glass-card::after {
    left: 0.85rem;
    right: 0.85rem;
    height: 2px;
  }

  .section-heading {
    margin-bottom: 0.65rem;
  }

  .section-heading h2,
  .small-heading {
    font-size: 1.03rem;
  }

  .eyebrow,
  .section-kicker,
  .mini-label {
    font-size: 0.66rem;
    letter-spacing: 0.11em;
  }

  .form-label {
    margin-bottom: 0.22rem;
    font-size: 0.68rem;
  }

  .control-neon,
  .form-control.control-neon,
  .form-select.control-neon {
    min-height: 38px;
    padding-top: 0.35rem;
    padding-bottom: 0.35rem;
    font-size: 0.88rem;
  }

  .noise-status-box {
    grid-template-columns: 0.9fr auto 1fr auto;
    gap: 0.55rem;
    padding: 0.55rem;
  }

  .noise-status-box .form-range {
    grid-column: auto;
  }

  .noise-status-box strong {
    font-size: 0.95rem;
  }

  .panel-topline {
    margin-bottom: 0.65rem;
  }

  .mode-pill,
  .step-counter {
    min-height: 34px;
    padding: 0.38rem 0.58rem;
    font-size: 0.72rem;
  }

  .current-display {
    gap: 0.55rem;
  }

  .display-cell {
    min-height: 76px;
    padding: 0.7rem;
  }

  .display-cell span {
    font-size: 0.66rem;
  }

  .display-cell strong {
    margin-top: 0.32rem;
    font-size: clamp(1.55rem, 2.8vw, 2.75rem);
  }

  .status-rail {
    gap: 0.6rem;
    padding: 0.65rem;
  }

  #examStatus {
    font-size: 1rem;
    line-height: 1.15;
  }

  .response-zone {
    gap: 0.75rem;
  }

  .btn {
    min-height: 38px;
    font-size: 0.78rem;
  }

  .btn-response {
    min-height: 64px;
    font-size: clamp(1.25rem, 2.7vw, 2.15rem);
  }

  .session-actions,
  .utility-actions {
    gap: 0.5rem;
  }

  .manual-panel {
    padding: 0.65rem;
  }

  .complete-switch {
    min-height: 30px;
    font-size: 0.82rem;
  }

  .complete-switch .form-check-input {
    width: 2.45rem;
    height: 1.2rem;
  }

  .app-message {
    min-height: 22px;
    font-size: 0.9rem;
  }

  .avg-grid {
    gap: 0.5rem;
    margin-bottom: 0.65rem !important;
  }

  .avg-grid > div {
    padding: 0.62rem;
  }

  .avg-grid strong {
    font-size: 1.02rem;
  }

  .result-log {
    max-height: calc(100vh - 430px);
    min-height: 150px;
    gap: 0.45rem;
  }

  .result-item {
    padding: 0.55rem;
  }

  .result-item strong {
    font-size: 0.88rem;
    line-height: 1.15;
  }

  .result-item span,
  .operator-note span {
    font-size: 0.78rem;
  }

  .operator-note {
    padding: 0.6rem;
  }

  .right-stack {
    gap: 0.75rem;
  }

  .audiogram-canvas {
    min-height: 245px;
    height: calc(100vh - 535px);
    max-height: 335px;
  }

  .result-table-wrap {
    max-height: calc(100vh - 585px);
    min-height: 165px;
  }

  .result-table {
    font-size: 0.78rem;
  }

  .result-table thead th,
  .result-table td {
    padding: 0.42rem 0.45rem;
  }

  .badge-soft {
    padding: 0.25rem 0.38rem;
    font-size: 0.64rem;
  }

  .app-footer {
    display: none;
  }
}

@media (min-width: 1200px) and (max-height: 820px) {
  .operator-header .section-heading {
    display: none;
  }

  .operator-header {
    margin-top: 0.45rem;
    margin-bottom: 0.65rem !important;
  }

  .surface-card,
  .glass-card {
    padding: 0.72rem;
  }

  .display-cell {
    min-height: 68px;
  }

  .display-cell strong {
    font-size: clamp(1.35rem, 2.5vw, 2.35rem);
  }

  .btn-response {
    min-height: 56px;
  }

  .manual-panel {
    padding: 0.55rem;
  }

  .operator-note {
    display: none;
  }

  .audiogram-canvas {
    min-height: 220px;
    height: calc(100vh - 500px);
  }

  .result-table-wrap {
    max-height: calc(100vh - 540px);
    min-height: 145px;
  }
}