:root {
  --bg: #f4f6f8;
  --panel: rgba(255, 255, 255, 0.94);
  --ink: #132033;
  --muted: #5a677a;
  --line: #d7dee7;
  --accent: #1a4d7a;
  --accent-strong: #123754;
  --accent-soft: #dbe8f4;
  --shadow: 0 20px 45px rgba(19, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(50, 104, 144, 0.15), transparent 30%),
    linear-gradient(180deg, #edf3f8 0%, #f7f9fb 55%, #edf2f7 100%);
}

.home-page .shell {
  display: grid;
  gap: 28px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, opacity 0.18s ease;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
.tab-button,
.back-link,
.project-card,
.nav-group-summary {
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease,
    color 0.18s ease,
    border-color 0.18s ease;
}

.shell {
  width: min(1240px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero,
.project-header {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: end;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(215, 222, 231, 0.85);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 24px;
  backdrop-filter: blur(14px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  font-weight: 700;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 3vw, 3.6rem);
  line-height: 1;
  max-width: 12ch;
}

.project-header h1 {
  max-width: 18ch;
}

.hero-copy,
.section-heading p,
.empty-state,
.card-subtitle,
.card-meta,
.back-link,
.meta-chip {
  color: var(--muted);
}

.create-form,
.project-form,
.top-fields,
.section-fields,
.field-block,
.year-grid,
.matrix-grid,
.header-actions {
  display: grid;
  gap: 16px;
}

label span,
.field-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: white;
}

.input-with-affix,
.matrix-input-wrap {
  position: relative;
}

.input-affix,
.cell-affix {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.92rem;
  pointer-events: none;
}

.input-affix.is-prefix,
.cell-affix.is-prefix {
  left: 14px;
}

.input-affix.is-suffix,
.cell-affix.is-suffix {
  right: 14px;
}

input.has-prefix {
  padding-left: 34px;
}

input.has-suffix {
  padding-right: 38px;
}

textarea {
  resize: vertical;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: white;
  font-weight: 700;
  cursor: pointer;
}

button:hover,
.tab-button:hover,
.nav-group-summary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(19, 32, 51, 0.12);
}

a:hover,
.back-link:hover {
  color: var(--accent);
}

.button-secondary {
  background: linear-gradient(180deg, #eef3f7 0%, #dfe8f0 100%);
  color: var(--ink);
  border: 1px solid var(--line);
}

.button-danger {
  background: linear-gradient(180deg, #ff5a54 0%, #d93025 100%);
  color: white;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.project-card {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, white 0%, #f7fafc 100%);
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px rgba(19, 32, 51, 0.11);
  border-color: rgba(26, 77, 122, 0.25);
}

.card-title {
  margin: 0;
  font-weight: 700;
}

.card-subtitle,
.card-meta {
  margin: 0;
  font-size: 0.92rem;
}

.project-shell {
  display: grid;
  gap: 20px;
}

.overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.workspace-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.workspace-sidebar {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 16px;
}

.workspace-main {
  display: grid;
  gap: 20px;
}

.sidebar-panel {
  padding: 20px;
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
}

.project-kicker {
  margin-top: 6px;
}

.header-actions {
  justify-items: end;
}

.meta-chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.metrics-grid article {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbfd 0%, #ecf4fa 100%);
  border: 1px solid var(--line);
}

.metrics-grid strong {
  font-size: 1.4rem;
}

.top-fields {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.full-width {
  grid-column: 1 / -1;
}

.form-section {
  scroll-margin-top: 20px;
  display: none;
}

.form-section.is-active {
  display: block;
}

.section-fields {
  grid-template-columns: 1fr;
}

.section-fields.compact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.section-fields.structure-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
}

.section-fields.general-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: start;
}

.field-block {
  padding-top: 10px;
  border-top: 1px solid rgba(215, 222, 231, 0.7);
}

.field-block.full-span {
  grid-column: 1 / -1;
}

.field-block.half-span {
  grid-column: span 3;
}

.field-block.third-span {
  grid-column: span 2;
}

.field-block.quarter-span {
  grid-column: span 3;
}

.section-fields.structure-grid .field-block.structure-third-span {
  grid-column: span 1;
}

.paired-fields {
  display: grid;
  gap: 16px;
}

.paired-fields-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.general-grid .field-label {
  min-height: 38px;
  display: flex;
  align-items: flex-start;
}

.general-grid .paired-fields .field-label,
.general-grid .danger-zone .field-label {
  min-height: 0;
  display: block;
}

.section-fields.structure-grid .field-block {
  display: grid;
  grid-template-rows: auto auto;
  align-items: start;
}

.section-fields.structure-grid .field-label {
  min-height: 36px;
  display: flex;
  align-items: flex-start;
}

.section-fields.structure-grid .field-block > select,
.section-fields.structure-grid .field-block > .input-with-affix,
.section-fields.structure-grid .field-block > .toggle-field {
  margin-top: 0;
}

.general-grid .toggle-field,
.general-grid select,
.general-grid input[type="text"],
.general-grid input[type="number"],
.general-grid textarea {
  min-height: 48px;
}

.general-grid textarea {
  min-height: 112px;
}

.year-grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.row-names-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.matrix-table {
  display: grid;
  gap: 10px;
  overflow-x: auto;
  margin-top: 4px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, #fbfdff 0%, #f2f6fa 100%);
}

.matrix-row {
  display: grid;
  grid-template-columns: 220px repeat(5, minmax(110px, 1fr));
  gap: 10px;
  align-items: center;
}

.matrix-row .matrix-input-wrap input {
  width: 100%;
}

.matrix-head {
  font-weight: 700;
  color: var(--muted);
}

.matrix-row > span:first-child {
  font-weight: 600;
}

.checkbox-field {
  display: flex;
  gap: 10px;
  align-items: center;
}

.toggle-field {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  cursor: pointer;
  min-height: 52px;
}

.toggle-field input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-ui {
  position: relative;
  width: 46px;
  height: 28px;
  border-radius: 999px;
  background: #d7dee7;
  transition: background 0.2s ease;
}

.toggle-ui::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 2px 6px rgba(19, 32, 51, 0.18);
  transition: transform 0.2s ease;
}

.toggle-field input:checked + .toggle-ui {
  background: var(--accent);
}

.toggle-field input:checked + .toggle-ui::after {
  transform: translateX(18px);
}

.sticky-actions {
  position: sticky;
  bottom: 12px;
  display: flex;
  justify-content: flex-end;
}

.tabs-panel,
.tabs-list {
  display: grid;
  gap: 12px;
}

.tabs-list {
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.tabs-list-vertical {
  grid-template-columns: 1fr;
}

.nav-groups {
  display: grid;
  gap: 12px;
}

.nav-group {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbfd 0%, #edf3f8 100%);
  overflow: hidden;
}

.nav-group-summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-group-icon::before {
  content: "+";
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}

.nav-group[open] .nav-group-icon::before {
  content: "-";
}

.nav-group[open] .nav-group-summary {
  border-bottom: 1px solid var(--line);
}

.nav-group .tabs-list {
  padding: 12px;
}

.nav-group-single {
  width: 100%;
}

.button-danger-small {
  width: 25%;
  min-width: 180px;
  padding: 10px 14px;
  font-size: 0.92rem;
}

.with-top-gap {
  margin-top: 12px;
}

.danger-zone {
  margin-top: 8px;
}

.extraordinary-grid {
  grid-template-columns: 1fr;
  align-items: start;
}

.nav-group-highlight {
  background: linear-gradient(180deg, #f4e9e8 0%, #efe0df 100%);
  border-color: #dfc3bf;
}

.tab-button {
  text-align: left;
  border-radius: 18px;
  padding: 14px 16px;
  color: var(--ink);
  background: linear-gradient(180deg, #f5f8fb 0%, #edf3f8 100%);
  border: 1px solid var(--line);
}

.tab-button.is-active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: white;
}

.tab-button.is-highlight {
  background: linear-gradient(180deg, #fff7f6 0%, #f4e3e1 100%);
}

.tab-button.is-highlight.is-active {
  background: linear-gradient(135deg, #8b3a34 0%, #6e2c28 100%);
  color: white;
}

@media (max-width: 960px) {
  .hero,
  .project-header,
  .top-fields,
  .overview-grid {
    grid-template-columns: 1fr;
  }

  .workspace-layout {
    grid-template-columns: 1fr;
  }

  .workspace-sidebar {
    position: static;
  }

  .section-fields.compact-grid {
    grid-template-columns: 1fr;
  }

  .section-fields.general-grid,
  .section-fields.structure-grid,
  .extraordinary-grid,
  .paired-fields-2 {
    grid-template-columns: 1fr;
  }

  .field-block.half-span,
  .field-block.third-span,
  .field-block.quarter-span,
  .section-fields.structure-grid .field-block.structure-third-span {
    grid-column: 1 / -1;
  }

  .matrix-row {
    min-width: 860px;
  }
}