/* ===== Tokens ===== */
:root {
  --surface: #fcfcfb;
  --surface-alt: #f4f2ee;
  --surface-dark: #262524;
  --text-primary: #1c1b1a;
  --text-secondary: #5c5a56;
  --text-muted: #8c8a85;
  --text-on-dark: #f4f2ee;
  --border: #e4e1da;
  --accent: #eb6834;       /* brand orange — logo */
  --accent-dark: #c9551f;
  --series-operating: #2a78d6; /* dataviz categorical slot 1 */
  --series-reserves:  #eb6834; /* dataviz categorical slot 2 */
  --status-good: #006300;      /* dataviz success text, light surface */
  --radius: 6px;
  --max-width: 980px;
  --section-pad-y: 4.5rem;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 { text-wrap: balance; }
p, .lede, .sub, .label, .phrase-list li .sub, .toc-panel a {
  text-wrap: pretty;
}

/* ===== Layout shell ===== */
/* No left padding on .page — sections keep their own full-width background
   (so it shows through behind the transparent toc rail); the 72px rail
   clearance instead lives on each section's own left padding below. */

section {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--section-pad-y) 2.5rem var(--section-pad-y) calc(2.5rem + 72px);
  border-bottom: 1px solid var(--border);
  scroll-snap-align: start;
  scroll-snap-stop: always;
  overflow-y: auto;
}

section.dark {
  background: var(--surface-dark);
  color: var(--text-on-dark);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1.1rem;
}

section.dark .eyebrow { color: var(--accent); }

h1, h2, h3 {
  font-weight: 650;
  line-height: 1.1;
  margin: 0 0 0.6rem 0;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
}

p.lede {
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 1.25rem 0 0 0;
}

section.dark p.lede { color: #c7c4bd; }

p.lede.one-line {
  max-width: none;
  white-space: nowrap;
}

/* ===== Cover ===== */
.cover {
  align-items: center;
  text-align: center;
  background: var(--surface-dark);
  color: var(--text-on-dark);
  border-bottom: none;
}

.cover-logo {
  width: 108px;
  height: 108px;
  margin: 0 auto 2.25rem;
}

.cover h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  letter-spacing: -0.02em;
}

.cover .sub, .closing .sub {
  margin-top: 0.9rem;
  font-size: 1.3rem;
  color: #c7c4bd;
  font-weight: 400;
}

.cover .meta {
  margin-top: 3rem;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8c8a85;
}

/* ===== Big stat blocks ===== */
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin-top: 3.5rem;
}

.stat {
  flex: 1 1 200px;
}

.stat .num {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat .num.accent { color: var(--accent); }
.stat .num.num-sm { font-size: clamp(1.7rem, 3vw, 2.3rem); white-space: nowrap; }
.stat .label {
  margin-top: 0.85rem;
  font-size: 1.12rem;
  color: var(--text-secondary);
}

section.dark .stat .label { color: #c7c4bd; }

.delta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.75rem;
}

/* ===== Two-up comparison (before/after) ===== */
.compare {
  display: flex;
  align-items: center;
  gap: 3rem;
  margin-top: 3.5rem;
  flex-wrap: wrap;
}

.compare-card {
  flex: 1 1 220px;
  padding: 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-alt);
}

.compare-card .tag {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.compare-card .num {
  font-size: 2.6rem;
  font-weight: 700;
  margin-top: 0.65rem;
}

.compare-arrow {
  font-size: 1.8rem;
  color: var(--text-muted);
}

/* ===== Equation row ===== */
.equation {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}

.equation .term {
  text-align: center;
}

.equation .term .num {
  font-size: clamp(2rem, 3.4vw, 2.8rem);
  font-weight: 700;
}

.equation .term .num.pos { color: var(--series-reserves); }
.equation .term .num.neg { color: var(--series-operating); }

.equation .term .label {
  margin-top: 0.55rem;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.equation .op {
  font-size: 1.6rem;
  color: var(--text-muted);
  font-weight: 300;
}

/* ===== Tables ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 3rem;
  font-size: 1.08rem;
}

caption {
  text-align: left;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}

th, td {
  text-align: right;
  padding: 1.05rem 0.9rem;
  border-bottom: 1px solid var(--border);
}

th:first-child, td:first-child {
  text-align: left;
}

thead th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 2px solid var(--border);
}

tbody tr:last-child td,
tbody tr.total td {
  border-bottom: none;
}

tr.total td {
  border-top: 2px solid var(--text-primary);
  font-weight: 700;
  padding-top: 1.25rem;
}

td.pos { color: var(--series-reserves); font-weight: 600; }
td.neg { color: var(--series-operating); font-weight: 600; }
td.muted { color: var(--text-muted); }

/* ===== Chart ===== */
.viz-root {
  margin-top: 3rem;
}

.chart-legend {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

.chart-legend .key {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-legend .swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}

/* ===== Lists (no sentences — short phrases) ===== */
.phrase-list {
  list-style: none;
  padding: 0;
  margin: 3.75rem 0 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.25rem;
}

.phrase-list li {
  padding: 1.4rem 0 0 0;
  border-top: 2px solid var(--border);
  font-size: 1.18rem;
  font-weight: 600;
}

.phrase-list li .sub {
  display: block;
  margin-top: 0.55rem;
  font-size: 1.02rem;
  font-weight: 400;
  color: var(--text-secondary);
}

section.dark .phrase-list li { border-top-color: #3d3b38; }
section.dark .phrase-list li .sub { color: #c7c4bd; }

/* ===== Carousel (Budget Breakdown) ===== */
.carousel-viewport {
  display: flex;
  align-items: stretch;
  gap: 1.75rem;
  width: 100%;
  margin-top: 2.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.carousel-viewport::-webkit-scrollbar {
  display: none;
}

.carousel-spacer {
  flex: 0 0 auto;
  width: 10%;
}

.carousel-panel {
  flex: 0 0 auto;
  width: 620px;
  max-width: 82vw;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.25rem 2.5rem;
  opacity: 0.4;
  transform: scale(0.91);
  transition: opacity 0.35s ease, transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  overflow-x: auto;
}

.carousel-panel h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.carousel-panel.active {
  opacity: 1;
  transform: scale(1);
  border-color: var(--accent);
  box-shadow: 0 20px 44px rgba(28, 27, 26, 0.1);
}

.carousel-panel--wide {
  width: 880px;
  max-width: 92vw;
}

.carousel-panel--wide table {
  font-size: 1rem;
}

.carousel-panel .viz-root,
.carousel-panel table,
.carousel-panel .savings-list {
  margin-top: 1.75rem;
}

.carousel-panel .viz-root {
  text-align: center;
}

.carousel-panel .chart-legend {
  justify-content: center;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

@media (max-width: 720px) {
  .carousel-panel { width: 86vw; max-width: 86vw; padding: 1.75rem; }
  .carousel-spacer { width: 7vw; }
}

.carousel-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.carousel-arrow svg { width: 18px; height: 18px; }

.carousel-arrow:hover:not(:disabled) {
  background: var(--surface-alt);
}

.carousel-arrow:disabled {
  opacity: 0.3;
  cursor: default;
}

.carousel-count {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 3em;
  text-align: center;
}

/* ===== To-do list (Looking Ahead) ===== */
.todo-list {
  list-style: none;
  padding: 0;
  margin: 3.5rem 0 0 0;
  max-width: 560px;
}

.todo-list li {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--border);
}

.todo-list li:first-child {
  border-top: 1px solid var(--border);
}

.todo-list .box {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 0.2rem;
  border: 2px solid var(--text-muted);
  border-radius: 5px;
}

.todo-list .text {
  font-size: 1.18rem;
  font-weight: 600;
}

.todo-list .text .sub {
  display: block;
  margin-top: 0.4rem;
  font-size: 1.02rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* ===== Savings list (slide 8) ===== */
.savings-list {
  list-style: none;
  padding: 0;
  margin: 3.75rem 0 0 0;
  border-top: 1px solid var(--border);
}

.savings-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 1.2rem;
  font-weight: 600;
}

.savings-list .status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.05rem;
  font-weight: 600;
  white-space: nowrap;
}

.savings-list .status svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.savings-list .status.good { color: var(--status-good); }
.savings-list .status.flat { color: var(--text-secondary); }
.savings-list .status.flat svg { transform: rotate(180deg); }

/* ===== Image stub ===== */
.photo-stub {
  width: 100%;
  aspect-ratio: 16/7;
  background: linear-gradient(135deg, var(--surface-alt), var(--border));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 3rem;
}

/* ===== Split funding bar ===== */
.split-bar {
  margin-top: 3.5rem;
}

.split-bar .bar {
  display: flex;
  height: 14px;
  border-radius: 7px;
  overflow: hidden;
}

.split-bar .bar .seg-a { background: var(--series-reserves); }
.split-bar .bar .seg-b { background: var(--series-operating); }

.split-bar .bar-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 1.25rem;
  font-size: 1.08rem;
}

.split-bar .bar-labels .num {
  font-weight: 700;
  font-size: 1.9rem;
  display: block;
}

/* ===== Closing ===== */
.closing {
  align-items: center;
  text-align: center;
  background: var(--surface-dark);
  color: var(--text-on-dark);
  border-bottom: none;
}

.closing .cover-logo { width: 72px; height: 72px; margin-bottom: 2rem; opacity: 0.92; }

/* ===== TOC rail (Notion-style) ===== */
.toc-rail {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 40px;
  z-index: 50;
  display: flex;
  align-items: center;
  padding-left: 14px;
}

.toc-rail .toc-track {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toc-dash {
  width: 16px;
  height: 2px;
  border-radius: 1px;
  background: var(--border);
  cursor: pointer;
  transition: background 0.15s ease, width 0.15s ease, transform 0.15s ease;
}

.toc-dash:hover,
.toc-dash.active {
  background: var(--accent);
}

/* Expanded outline panel */
.toc-panel {
  position: fixed;
  top: 50%;
  left: 36px;
  transform: translateY(-50%);
  background: var(--surface-dark);
  border-radius: 10px;
  padding: 0.6rem 0;
  min-width: 260px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.14s ease;
}

.toc-rail:hover .toc-panel,
.toc-rail.pinned .toc-panel {
  opacity: 1;
  pointer-events: auto;
}

.toc-panel a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 1.1rem;
  text-decoration: none;
  color: #c7c4bd;
  font-size: 0.95rem;
  white-space: nowrap;
}

.toc-panel a .n {
  font-size: 0.72rem;
  color: #78766f;
  font-variant-numeric: tabular-nums;
  width: 1.2em;
}

.toc-panel a:hover,
.toc-panel a.active {
  color: var(--text-on-dark);
  background: rgba(255,255,255,0.06);
}

.toc-panel a.active .n { color: var(--accent); }

@media (max-width: 720px) {
  .toc-rail { display: none; }
  html { scroll-snap-type: y proximity; }
  section { height: auto; min-height: 100vh; padding: 4rem 1.5rem; }
  .equation { gap: 1rem; }
  .equation .op { display: none; }
  p.lede.one-line { max-width: 640px; white-space: normal; }
}