:root {
  --bg: #eef3f1;
  --paper: #ffffff;
  --ink: #142433;
  --muted: #62707d;
  --line: #d7e1df;
  --navy: #12395b;
  --navy-deep: #0b2945;
  --green: #0d6b4f;
  --green-deep: #084b39;
  --green-soft: #eaf5ef;
  --gold: #c7a14a;
  --gold-soft: #fbf5e5;
  --warn: #98620a;
  --warn-soft: #fff6e5;
  --bad: #9b1c1c;
  --bad-soft: #fff0f0;
  --shadow: 0 20px 50px rgba(18, 57, 91, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font: 15px/1.48 "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  overflow-x: hidden;
  background:
    linear-gradient(135deg, rgba(18, 57, 91, 0.09), transparent 34rem),
    radial-gradient(circle at top right, rgba(13, 107, 79, 0.15), transparent 26rem),
    var(--bg);
}

body[data-lang="en"] .es,
body[data-lang="es"] .en {
  display: none !important;
}

header {
  background: linear-gradient(135deg, var(--navy-deep), var(--navy) 55%, var(--green-deep));
  border-bottom: 4px solid var(--gold);
  color: #fff;
  padding: 22px 24px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  max-width: 1240px;
  margin: 0 auto;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 66px;
  height: 66px;
  flex: 0 0 auto;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, 0.75);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.eyebrow,
.section-kicker {
  margin: 0 0 5px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(25px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: 0;
}

header p:not(.eyebrow) {
  max-width: 720px;
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.84);
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.lang-button {
  min-height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  cursor: pointer;
  font: 700 13px/1.2 "Segoe UI", sans-serif;
}

.lang-button.active {
  border-color: var(--gold);
  background: #fff;
  color: var(--navy);
}

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 26px 22px 46px;
}

#result {
  scroll-margin-top: 16px;
}

section {
  margin: 0 0 20px;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 1px 0 rgba(18, 57, 91, 0.03);
}

.upload-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 20px;
  align-items: stretch;
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.upload-intro {
  padding: 24px;
  color: #fff;
  background:
    linear-gradient(150deg, rgba(11, 41, 69, 0.96), rgba(13, 107, 79, 0.94)),
    linear-gradient(45deg, transparent 0 58%, rgba(199, 161, 74, 0.22) 58% 100%);
}

.upload-intro h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.08;
}

.upload-intro p:not(.section-kicker) {
  color: rgba(255, 255, 255, 0.86);
}

.privacy-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 18px 0;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 3px 10px;
  background: var(--gold);
  color: var(--navy-deep);
  font-size: 12px;
  text-transform: uppercase;
}

.flow-list {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 34px;
  color: rgba(255, 255, 255, 0.92);
}

.flow-list li > span:first-child {
  display: grid;
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 20px;
  letter-spacing: 0;
}

h3 {
  margin: 18px 0 8px;
  color: var(--navy);
  font-size: 15px;
}

p {
  margin: 8px 0;
}

form {
  padding: 22px;
}

form .grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
}

label small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.file-field {
  position: relative;
  grid-column: 1 / -1;
  min-height: 184px;
  padding: 18px;
  border: 2px dashed rgba(13, 107, 79, 0.5);
  border-radius: 10px;
  background: var(--green-soft);
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.file-field.drag-over {
  border-color: var(--green);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(13, 107, 79, 0.14);
}

input {
  width: 100%;
  min-width: 0;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 9px 11px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

input:focus {
  outline: 3px solid rgba(13, 107, 79, 0.18);
  border-color: var(--green);
}

input[type="file"] {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  padding: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-cta {
  display: flex;
  align-items: center;
  gap: 15px;
  min-height: 112px;
  margin-top: 6px;
  border-radius: 10px;
  padding: 18px;
  background: #fff;
  color: var(--navy);
  box-shadow: inset 0 0 0 1px rgba(13, 107, 79, 0.18);
}

.upload-cta strong {
  display: block;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.05;
}

.upload-cta small {
  display: block;
  margin-top: 6px;
}

.upload-icon {
  display: grid;
  width: 70px;
  height: 70px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--green), var(--navy));
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.file-status {
  display: block;
  min-height: 34px;
  margin-top: 10px;
  border-radius: 7px;
  padding: 8px 10px;
  background: #fff;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

button[type="submit"] {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 7px;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--green), var(--navy));
  color: #fff;
  font: 800 14px/1.2 "Segoe UI", sans-serif;
  cursor: pointer;
}

button[disabled] {
  cursor: wait;
  opacity: 0.68;
}

.actions {
  grid-column: span 2;
  display: grid;
  align-content: end;
  gap: 6px;
}

.actions small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.notice,
.warning,
.error {
  padding: 14px 16px;
  margin: 12px 0;
  border-left: 5px solid var(--green);
  border-radius: 8px;
  background: var(--green-soft);
}

.warning {
  border-left-color: var(--warn);
  background: var(--warn-soft);
}

.error {
  border-left-color: var(--bad);
  background: var(--bad-soft);
}

.subtle,
.muted {
  color: var(--muted);
  font-size: 13px;
}

.result-hero {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(320px, 1.2fr);
  gap: 18px;
  border-top: 5px solid var(--green);
}

.scoreplate {
  display: grid;
  align-content: center;
  min-height: 210px;
  padding: 24px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--navy), var(--green-deep));
  color: #fff;
}

.scoreplate .label {
  color: var(--gold);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.scoreplate .value {
  margin-top: 4px;
  font-size: clamp(52px, 8vw, 84px);
  font-weight: 800;
  line-height: 0.95;
}

.scoreplate .small {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.8);
}

.result-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 10px;
}

.result-hero > .notice,
.result-hero > .warning {
  grid-column: 1 / -1;
}

.cards,
.mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.metric,
.formula,
.detail-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px;
  background: #fff;
}

.metric strong {
  display: block;
  margin-top: 2px;
  color: var(--navy);
  font-size: 24px;
}

.metric.feature {
  border-color: rgba(13, 107, 79, 0.32);
  background: linear-gradient(180deg, #fff, var(--green-soft));
}

.explain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 12px;
}

.formula strong,
.detail-card strong {
  color: var(--navy);
}

.formula code {
  display: block;
  margin-top: 8px;
}

.step-note {
  display: grid;
  gap: 10px;
  margin: 12px 0;
  padding: 14px 16px;
  border: 1px solid rgba(18, 57, 91, 0.1);
  border-radius: 8px;
  background: #f8fbfa;
}

.step-note strong {
  color: var(--green-deep);
}

.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

.table-wrap table {
  min-width: 760px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  background: #fff;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 9px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--navy);
  background: #f5f8f8;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.num {
  text-align: right;
  white-space: nowrap;
}

.selected {
  background: var(--gold-soft);
}

code {
  white-space: normal;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

@media (max-width: 920px) {
  .topbar,
  .brand,
  .upload-panel,
  .result-hero {
    display: grid;
  }

  .upload-panel,
  .result-hero {
    grid-template-columns: 1fr;
  }

  .upload-panel form {
    order: -1;
  }

  .brand-mark {
    width: 54px;
    height: 54px;
  }

  form .grid,
  .result-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .file-field,
  .actions {
    grid-column: auto;
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  header,
  main {
    padding-left: 14px;
    padding-right: 14px;
  }

  section,
  form,
  .upload-intro {
    padding: 16px;
  }

  .language-switch {
    width: 100%;
  }

  .lang-button {
    flex: 1;
  }

  .topbar {
    gap: 16px;
  }

  .brand {
    align-items: start;
  }

  h1 {
    font-size: 30px;
  }

  form .grid,
  .result-summary,
  .cards,
  .mini-grid,
  .explain-grid {
    grid-template-columns: 1fr;
  }

  .file-field {
    min-height: 176px;
    padding: 14px;
  }

  .upload-cta {
    min-height: 104px;
    padding: 14px;
  }

  .upload-icon {
    width: 58px;
    height: 58px;
  }
}