:root {
  --bs-primary: #002b3c;
  --bs-secondary: #00f5b5;
  --bs-tertiary: #e8ff00;
  --bs-quartary: #9e38ff;
  --paper: #f6fcff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --line: rgba(0, 43, 60, 0.12);
  --ink: var(--bs-primary);
  --muted: #4b6773;
  --teal: var(--bs-secondary);
  --teal-deep: var(--bs-primary);
  --rust: var(--bs-quartary);
  --shadow: 0 22px 60px rgba(0, 43, 60, 0.14);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 15%, rgba(0, 245, 181, 0.16), transparent 24%),
    radial-gradient(circle at 88% 12%, rgba(158, 56, 255, 0.14), transparent 22%),
    radial-gradient(circle at 72% 78%, rgba(232, 255, 0, 0.15), transparent 20%),
    linear-gradient(145deg, #f8ffff 0%, #f7f4ff 100%);
  font-family: Barlow, Arial, Helvetica, sans-serif;
}

.page-shell {
  position: relative;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.page-shell::before,
.page-shell::after {
  content: "";
  position: fixed;
  z-index: -1;
  border-radius: 999px;
  filter: blur(18px);
  opacity: 0.7;
}

.page-shell::before {
  top: 18%;
  right: 8%;
  width: 180px;
  height: 180px;
  background: rgba(0, 245, 181, 0.18);
}

.page-shell::after {
  bottom: 8%;
  left: 6%;
  width: 220px;
  height: 220px;
  background: rgba(158, 56, 255, 0.14);
}

.panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  animation: rise 700ms ease both;
  margin-bottom:1em;
}

.hero,
.preview-panel {
  padding: 32px;
}

.workspace {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

.workspace .panel {
  padding: 28px;
}

.stack {
  display: grid;
  gap: 20px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  margin: 0 0 18px;
}

.brand-mark svg {
  display: block;
  width: clamp(140px, 18vw, 188px);
  height: auto;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(0, 245, 181, 0.16);
  color: var(--bs-primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-family: Barlow, Arial, Helvetica, sans-serif;
  line-height: 1.02;
}

h1 {
  max-width: 100%;
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
}

.hero-copy,
.section-heading p,
.note-card p,
#previewMeta,
#statusText,
#sourceMeta,
.dropzone-meta {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.hero-copy {
  max-width: 72ch;
  margin-top: 18px;
  font-size: 1.05rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-tags span {
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(0, 43, 60, 0.06);
  font-size: 0.92rem;
  font-weight: 600;
}

.section-heading {
  display: grid;
  gap: 6px;
}

.dropzone {
  display: grid;
  gap: 8px;
  align-items: center;
  padding: 28px;
  border: 1.5px dashed rgba(0, 245, 181, 0.42);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.3)),
    repeating-linear-gradient(
      -45deg,
      rgba(0, 245, 181, 0.05),
      rgba(0, 245, 181, 0.05) 16px,
      transparent 16px,
      transparent 32px
    );
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.dropzone:hover,
.dropzone.is-dragging {
  transform: translateY(-2px);
  border-color: rgba(0, 245, 181, 0.72);
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
  align-content: start;
}

.field label {
  font-size: 0.9rem;
  font-weight: 700;
}

select,
.button {
  min-height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  font: inherit;
}

select {
  width: 100%;
  padding: 0 14px;
  color: var(--ink);
  background: var(--surface-strong);
}

.sheet-dropdown {
  position: relative;
}

/* backdrop-filter donne un stacking context à chaque .panel : sans ceci, la liste
   déroulée serait peinte sous les panneaux suivants malgré son z-index. */
.panel:has(.sheet-dropdown[open]) {
  position: relative;
  z-index: 30;
}

.sheet-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.sheet-summary::-webkit-details-marker {
  display: none;
}

.sheet-summary::after {
  content: "▾";
  margin-left: 10px;
}

.sheet-dropdown[open] .sheet-summary::after {
  content: "▴";
}

.sheet-list {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  gap: 8px;
  max-height: 220px;
  overflow-y: auto;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.sheet-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
}

.sheet-option input {
  width: 16px;
  height: 16px;
  accent-color: var(--teal);
}

.sheet-option-all {
  font-weight: 700;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
}

#sheetOptions {
  display: grid;
  gap: 8px;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.action-note {
  margin: -6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.action-note a {
  color: var(--bs-primary);
  font-weight: 700;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.18em;
}

.button {
  padding: 0 18px;
  cursor: pointer;
  color: #fefdfb;
  background: linear-gradient(135deg, #04344a, var(--bs-primary));
  box-shadow: 0 12px 30px rgba(0, 43, 60, 0.22);
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(0, 43, 60, 0.28);
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.button-secondary {
  color: var(--ink);
  background: rgba(0, 245, 181, 0.16);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stat-card,
.note-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
}

.stat-card {
  display: grid;
  gap: 6px;
}

.stat-label {
  color: var(--muted);
  font-size: 0.92rem;
}

.stat-card strong {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1;
}

.note-card {
  display: grid;
  gap: 10px;
}

.table-wrap {
  overflow: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(31, 42, 46, 0.08);
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  background: rgba(248, 255, 255, 0.96);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td code,
.dropzone-meta code,
.note-card code {
  font-family: Consolas, "SFMono-Regular", "Liberation Mono", monospace;
  font-size: 0.94rem;
}

.empty-cell {
  color: var(--muted);
  text-align: center;
}

.hidden {
  display: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 920px) {
  .workspace {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding: 20px 0 28px;
  }

  .hero,
  .preview-panel,
  .workspace .panel {
    padding: 22px;
  }

  h1 {
    max-width: 100%;
  }

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

  .action-row {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}