:root {
  --surface: #ffffff;
  --surface-muted: #f5f7f8;
  --border: #d9e0e3;
  --ink: #172126;
  --muted: #65737b;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --danger: #b42318;
  --page-bg: #ecf0f5;
  --editor-bg: #fbfcfc;
  --gutter-bg: #f3f7f7;
  --shadow: 0 10px 28px rgba(23, 33, 38, 0.055);
}

:root[data-theme="dark"] {
  --surface: #141a1f;
  --surface-muted: #192229;
  --border: #2b3942;
  --ink: #edf4f5;
  --muted: #9aa9b1;
  --accent: #35b8a8;
  --accent-strong: #69d7c9;
  --danger: #ff7d72;
  --page-bg: #0f1519;
  --editor-bg: #111820;
  --gutter-bg: #151f28;
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--page-bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.5rem;
  border-radius: 8px;
  font-weight: 600;
}

.btn-primary {
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent-strong);
  --bs-btn-hover-border-color: var(--accent-strong);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(15, 118, 110, 0.22);
}

.input-group:focus-within .input-group-text {
  border-color: var(--accent);
}

.form-control,
.form-select,
.input-group-text {
  color: var(--ink);
  background-color: var(--surface);
  border-color: var(--border);
}

.auth-page {
  display: grid;
  place-items: center;
  padding: 1rem;
}

.auth-shell {
  width: min(100%, 420px);
}

.auth-panel,
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.auth-panel {
  padding: 2rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 3.25rem;
  height: 3.25rem;
  margin-bottom: 1.25rem;
  color: #fff;
  background: var(--accent);
  border-radius: 8px;
  font-size: 1.5rem;
}

.auth-panel h1,
.app-header h1,
.section-heading h2 {
  margin: 0;
  letter-spacing: 0;
}

.auth-panel h1 {
  font-size: 1.8rem;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem clamp(1rem, 4vw, 2rem);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-switch {
  display: inline-flex;
  padding: 0.2rem;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.theme-option {
  min-width: 3rem;
  min-height: 2rem;
  padding: 0.25rem 0.55rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 800;
}

.theme-option.is-active {
  color: var(--accent);
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(23, 33, 38, 0.08);
}

.logout-btn {
  --bs-btn-color: var(--danger);
  --bs-btn-border-color: rgba(180, 35, 24, 0.45);
  --bs-btn-hover-bg: var(--danger);
  --bs-btn-hover-border-color: var(--danger);
  --bs-btn-hover-color: #fff;
}

.app-header h1 {
  font-size: 1.6rem;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
}

.controls-card,
.editor-card {
  padding: 1rem;
}

.controls-card {
  align-self: start;
  position: sticky;
  top: 1rem;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0;
}

.section-heading i {
  color: var(--accent);
  font-size: 1.15rem;
}

.section-heading h2 {
  font-size: 1rem;
}

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

.label-with-help {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.label-with-help i {
  color: var(--muted);
  cursor: help;
  font-size: 0.9rem;
}

.switch-list {
  display: grid;
  gap: 0.65rem;
}

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

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.button-grid .btn {
  min-width: 0;
  min-height: 2.45rem;
  padding: 0.45rem 0.6rem;
  white-space: nowrap;
}

.stats-panel {
  display: grid;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.stats-panel div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.stats-panel span {
  color: var(--muted);
}

.stats-panel strong {
  max-width: 8rem;
  overflow: hidden;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.guide-panel,
.quality-panel,
.report-panel,
.checklist-panel,
.history-panel {
  padding: 0.85rem;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.guide-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.5rem;
  font-weight: 800;
}

.guide-title i {
  color: var(--accent);
}

.preset-badge {
  margin-left: auto;
  padding: 0.2rem 0.45rem;
  color: var(--accent-strong);
  background: #dff3ef;
  border-radius: 999px;
  font-size: 0.72rem;
}

:root[data-theme="dark"] .preset-badge {
  background: rgba(53, 184, 168, 0.16);
}

.preset-badge.is-safe {
  color: #2362a2;
  background: #e4f0ff;
}

.preset-badge.is-heavy {
  color: #8a4d00;
  background: #fff1d7;
}

:root[data-theme="dark"] .preset-badge.is-safe {
  color: #8fc4ff;
  background: rgba(55, 116, 185, 0.22);
}

:root[data-theme="dark"] .preset-badge.is-heavy {
  color: #ffd18a;
  background: rgba(201, 130, 22, 0.2);
}

.guide-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.mini-list,
.check-list {
  display: grid;
  gap: 0.35rem;
  margin: 0.65rem 0 0;
  padding: 0;
  list-style: none;
}

.mini-list li {
  color: var(--muted);
  font-size: 0.82rem;
}

.mini-list li::before {
  content: "- ";
}

.quality-list {
  display: grid;
  gap: 0.45rem;
}

.quality-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.quality-list span {
  color: var(--muted);
  font-size: 0.86rem;
}

.quality-list strong {
  max-width: 8rem;
  overflow: hidden;
  color: var(--ink);
  font-size: 0.86rem;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-text.is-ok {
  color: var(--accent);
}

.status-text.is-error {
  color: var(--danger);
}

.status-text.is-warn,
.status-text.is-high {
  color: #8a4d00;
}

.status-text.is-low {
  color: #2362a2;
}

.status-text.is-medium {
  color: var(--accent-strong);
}

.quality-action {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.mini-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.mini-actions .btn {
  min-height: 2.1rem;
  padding: 0.35rem 0.45rem;
  font-size: 0.8rem;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.check-list i {
  color: var(--accent);
}

.mini-link {
  margin-left: auto;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  font-size: 0.78rem;
  font-weight: 800;
}

.mini-link:hover {
  color: var(--accent);
}

.history-list {
  display: grid;
  gap: 0.5rem;
}

.history-item {
  display: grid;
  gap: 0.1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.history-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.history-item strong {
  overflow: hidden;
  font-size: 0.84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item span,
.empty-history {
  color: var(--muted);
  font-size: 0.78rem;
}

.workspace {
  display: grid;
  gap: 1rem;
  align-content: start;
  min-width: 0;
}

.editor-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.editor-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.icon-btn:hover,
.icon-btn.is-active {
  color: var(--accent);
  border-color: rgba(15, 118, 110, 0.45);
  background: #edf8f6;
}

.icon-btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.editor-badge {
  padding: 0.18rem 0.45rem;
  color: #2362a2;
  background: #e4f0ff;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
}

.upload-zone {
  display: flex;
  align-items: center;
  align-self: start;
  justify-content: space-between;
  gap: 0.85rem;
  min-height: 3rem;
  padding: 0.5rem 0.75rem;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  border: 1px dashed #bdd0d5;
  border-radius: 8px;
}

.upload-zone.is-dragging {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.upload-zone > div {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.55rem;
  align-items: center;
  min-width: 0;
}

.upload-zone i {
  grid-row: span 2;
  color: var(--accent);
  font-size: 1.2rem;
}

.upload-zone strong,
.upload-zone span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-zone span {
  color: var(--muted);
  font-size: 0.78rem;
}

.upload-zone strong {
  font-size: 0.9rem;
}

.upload-zone .btn {
  min-height: 2.2rem;
  padding: 0.35rem 0.7rem;
  font-size: 0.84rem;
}

.validation-bar {
  display: flex;
  align-items: center;
  align-self: start;
  gap: 0.8rem;
  min-height: 3.4rem;
  padding: 0.65rem 0.75rem;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.validation-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  color: #6f7f86;
  background: color-mix(in srgb, var(--surface) 65%, var(--border));
  border-radius: 8px;
}

.validation-bar strong,
.validation-bar span {
  display: block;
}

.validation-bar span {
  color: var(--muted);
  font-size: 0.92rem;
}

.validation-bar.is-checking .validation-icon {
  color: #2362a2;
  background: #e4f0ff;
}

.validation-bar.is-checking {
  background: color-mix(in srgb, #e4f0ff 58%, var(--surface));
  border-color: #c9dcf7;
}

.validation-bar.is-ok .validation-icon {
  color: var(--accent);
  background: #dff3ef;
}

.validation-bar.is-ok {
  background: color-mix(in srgb, #dff3ef 52%, var(--surface));
  border-color: #bfe5dc;
}

.validation-bar.is-warning .validation-icon {
  color: #8a4d00;
  background: #fff1d7;
}

.validation-bar.is-warning {
  background: color-mix(in srgb, #fff1d7 52%, var(--surface));
  border-color: #f1d49a;
}

.validation-bar.is-error .validation-icon {
  color: var(--danger);
  background: #ffe9e7;
}

.validation-bar.is-error {
  background: color-mix(in srgb, #ffe9e7 52%, var(--surface));
  border-color: #efb8b2;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
  min-height: calc(100vh - 210px);
}

.editor-card {
  display: grid;
  grid-template-rows: auto minmax(520px, 1fr);
  min-width: 0;
}

.code-editor {
  width: 100%;
  min-height: 520px;
  resize: vertical;
  padding: 1rem;
  color: #142024;
  background: var(--editor-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font: 0.9rem/1.55 Consolas, "Courier New", monospace;
  outline: none;
}

.code-editor:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(15, 118, 110, 0.22);
}

.CodeMirror {
  min-height: 520px;
  height: auto;
  color: #142024;
  background: var(--editor-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font: 0.9rem/1.55 Consolas, "Courier New", monospace;
}

.CodeMirror-focused {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(15, 118, 110, 0.22);
}

.CodeMirror-scroll {
  min-height: 520px;
}

.CodeMirror-gutters {
  background: var(--gutter-bg);
  border-right: 1px solid var(--border);
}

.CodeMirror-linenumber {
  color: #8b9aa1;
}

.CodeMirror-activeline-background {
  background: rgba(15, 118, 110, 0.06);
}

.error-gutter {
  width: 1.15rem;
}

.editor-error-line {
  background: #ffe9e7;
}

.editor-error-marker {
  display: grid;
  place-items: center;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.22rem;
  color: #fff;
  background: var(--danger);
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 900;
}

.CodeMirror-fullscreen {
  z-index: 2000;
  border: 0;
  border-radius: 0;
}

.CodeMirror-dialog {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.CodeMirror-dialog input {
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
}

.modal-content {
  color: var(--ink);
  background: var(--surface);
  border-radius: 8px;
}

:root[data-theme="dark"] .btn-outline-secondary {
  --bs-btn-color: var(--muted);
  --bs-btn-border-color: var(--border);
  --bs-btn-hover-bg: var(--surface-muted);
  --bs-btn-hover-border-color: var(--accent);
}

:root[data-theme="dark"] .btn-outline-primary {
  --bs-btn-color: var(--accent);
  --bs-btn-border-color: rgba(53, 184, 168, 0.55);
  --bs-btn-hover-bg: var(--accent);
  --bs-btn-hover-border-color: var(--accent);
  --bs-btn-hover-color: #0f1519;
}

:root[data-theme="dark"] .CodeMirror {
  color: #edf4f5;
}

@media (max-width: 1050px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .controls-card {
    position: static;
  }
}

@media (max-width: 760px) {
  .app-header,
  .upload-zone {
    align-items: stretch;
    flex-direction: column;
  }

  .header-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .editor-grid,
  .button-grid {
    grid-template-columns: 1fr;
  }

  .editor-card {
    grid-template-rows: auto minmax(360px, 1fr);
  }

  .code-editor {
    min-height: 360px;
  }

  .CodeMirror,
  .CodeMirror-scroll {
    min-height: 360px;
  }

  .editor-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}