/* ─────────────────────────────────────────────────────────────────────────
   The Grade Point Average — Swiss/modernist typography rich layout
   Off-white + ink black + single accent (oklch chartreuse)
   ───────────────────────────────────────────────────────────────────── */

:root {
  --bg: #f5f2eb;            /* warm off-white paper */
  --bg-2: #ebe7dc;          /* slightly darker paper */
  --ink: #0c0c0a;           /* ink black */
  --ink-soft: rgba(12,12,10,0.68);
  --ink-faint: rgba(12,12,10,0.18);
  --rule: rgba(12,12,10,0.85);
  --accent: oklch(0.88 0.20 110);     /* chartreuse / acid */
  --accent-ink: oklch(0.42 0.15 110); /* dark chartreuse for text */
  --sans: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  --serif: "Times New Roman", "Times", serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Menlo", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  /* tight noise pattern using SVG for paper feel */
  background-image:
    radial-gradient(rgba(12,12,10,0.025) 1px, transparent 1px);
  background-size: 4px 4px;
}

#root { min-height: 100vh; }

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 36px 0;
}

/* ── Header ─────────────────────────────────────────────────────────── */
.hdr {
  border-top: 6px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 28px 0 28px;
  margin-bottom: 0;
}
.hdr-title h1 {
  margin: 0;
  font-size: clamp(56px, 11vw, 168px);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.92;
  text-transform: none;
}
.hdr-sub {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-size: clamp(14px, 1.2vw, 18px);
  color: var(--ink-soft);
  max-width: 60ch;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

/* ── Step / section eyebrow ──────────────────────────────────────────── */
.step-lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 14px 0 6px;
  border-top: 1px solid var(--ink-faint);
  margin-top: 36px;
}
.sec-h {
  font-size: clamp(34px, 4.8vw, 68px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.95;
  margin: 8px 0 28px;
  text-wrap: balance;
}

/* ── Drop zone ──────────────────────────────────────────────────────── */
.drop-sec { padding-bottom: 60px; }
.drop {
  border: 2px solid var(--ink);
  background: var(--bg);
  margin-top: 14px;
  padding: 88px 48px;
  cursor: pointer;
  transition: background 120ms, transform 80ms;
  position: relative;
  text-align: center;
  user-select: none;
}
.drop:hover { background: var(--bg-2); }
.drop-on { background: var(--accent) !important; }
.drop-parsing { background: var(--ink); color: var(--bg); }

.drop-h {
  margin: 0 0 18px;
  font-size: clamp(48px, 7vw, 108px);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.92;
  text-transform: lowercase;
}
.drop-hint {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 auto 28px;
  line-height: 1.5;
}
.drop-parsing .drop-hint { color: rgba(255,255,255,0.55); }
.drop-cta {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  border: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.drop-arrow { font-size: 18px; }
.drop-on .drop-cta { background: var(--ink); color: var(--accent); border-color: var(--ink); }

.drop-status {
  font-size: 88px;
  font-weight: 900;
  letter-spacing: -0.04em;
}
.drop-status-sub {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.6);
}
.drop-bar {
  height: 6px;
  background: rgba(255,255,255,0.15);
  margin: 28px auto;
  max-width: 480px;
  overflow: hidden;
}
.drop-bar-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  animation: fill 1.4s linear forwards;
}
@keyframes fill { to { width: 100%; } }

.drop-foot {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  flex-wrap: wrap;
}
.drop-foot .dot { color: var(--accent-ink); }
.drop-err {
  margin-top: 14px;
  padding: 14px 18px;
  border: 1px solid var(--ink);
  background: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ── Degree banner ──────────────────────────────────────────────────── */
.deg-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 14px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin-top: 28px;
  flex-wrap: wrap;
}
.deg-banner-l { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.kicker-inline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.deg-banner-name {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.deg-banner-r {
  display: flex;
  gap: 12px;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.deg-banner-r .dot { color: var(--accent-ink); }

/* ── Degree roast ───────────────────────────────────────────────────── */
.roast { padding-bottom: 36px; }
.roast-card {
  border: 1px solid var(--ink);
  background: var(--bg-2);
  margin-top: 12px;
}
.roast-body { padding: 28px 32px; }
.roast-deg {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px dotted var(--ink-faint);
}
.roast-line {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
  margin: 0 0 14px;
  text-wrap: pretty;
  color: var(--ink);
  max-width: 64ch;
}
.roast-perf {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  margin: 0;
  color: var(--ink-soft);
  text-wrap: pretty;
  max-width: 64ch;
}
@media (max-width: 880px) {
  .roast-body { padding: 22px 22px; }
}

/* ── Big numbers ────────────────────────────────────────────────────── */
.numbers { padding-bottom: 12px; }
.num-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin-top: 24px;
}
.big-stat {
  padding: 28px 32px 36px;
  border-right: 1px solid var(--ink);
  position: relative;
  min-width: 0;
  overflow: hidden;
}
.big-stat:last-child { border-right: none; }
.big-stat-acc { background: var(--accent); }

.big-stat-lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.big-stat-acc .big-stat-lbl { color: var(--accent-ink); }

.big-stat-val {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 8px 0 4px;
}
.big-stat-num {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 0.85;
  font-variant-numeric: tabular-nums;
}
.big-stat-unit {
  font-size: 28px;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: -0.02em;
}
.big-stat-acc .big-stat-unit { color: var(--accent-ink); }
.big-stat-sub {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}
.big-stat-acc .big-stat-sub { color: var(--accent-ink); font-weight: 700; }

.verdict {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2.3vw, 30px);
  line-height: 1.35;
  margin: 28px 0 0;
  max-width: 60ch;
  color: var(--ink);
  text-wrap: pretty;
}

/* ── Chart legend ───────────────────────────────────────────────────── */
.chart-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}
.chart-legend-dash {
  display: inline-block;
  width: 20px;
  flex-shrink: 0;
  border-top: 1.5px dashed;
}

/* ── Trend chart pair ───────────────────────────────────────────────── */
.trend { padding-bottom: 40px; }
.trend-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 12px;
  border: 1px solid var(--ink);
}
.chart-card {
  padding: 22px 24px 18px;
  border-right: 1px solid var(--ink);
}
.chart-card:last-child { border-right: none; }
.chart-card-h {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.trend-chart-wrap {
  display: none;
  border: 1px solid var(--ink);
  background: var(--bg);
  padding: 28px 24px 36px;
  margin-top: 12px;
}
.trend-chart {
  width: 100%;
  height: auto;
  display: block;
}
.trend-legend {
  display: flex;
  gap: 24px;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  flex-wrap: wrap;
}
.trend-legend span { display: inline-flex; align-items: center; gap: 8px; }
.leg-dot { width: 12px; height: 3px; background: var(--ink); display: inline-block; }
.leg-dim { opacity: 0.45; }
.leg-acc { background: var(--accent-ink); height: 2px; }

/* ── Calculators ────────────────────────────────────────────────────── */
.calc { padding-bottom: 36px; }
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--ink);
  margin-top: 12px;
}
.calc-card {
  padding: 28px 32px 32px;
  border-right: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}
.calc-card:last-child { border-right: none; }
.calc-card-acc { background: var(--accent); }
.calc-lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.calc-card-acc .calc-lbl { color: var(--accent-ink); }
.calc-inputs { display: flex; gap: 16px; }
.numinp { flex: 1; }
.numinp-lbl {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.numinp-row {
  display: flex;
  align-items: center;
  border: 1px solid var(--ink);
  background: var(--bg);
}
.calc-card-acc .numinp-row { background: rgba(255,255,255,0.5); }
.numinp-row button {
  width: 36px;
  height: 40px;
  border: none;
  background: transparent;
  font-size: 20px;
  cursor: pointer;
  font-family: var(--sans);
  font-weight: 600;
}
.numinp-row button:hover { background: var(--ink); color: var(--bg); }
.numinp-row input {
  flex: 1;
  border: none;
  background: transparent;
  height: 40px;
  text-align: center;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  outline: none;
  width: 0;
  -moz-appearance: textfield;
}
.numinp-row input::-webkit-outer-spin-button,
.numinp-row input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.numinp-unit {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-soft);
  padding-right: 12px;
  text-transform: uppercase;
}

.calc-need {
  border-top: 1px solid var(--ink);
  padding-top: 18px;
}
.calc-need-lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.calc-need-val {
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 6px;
}
.calc-need-num {
  font-size: clamp(64px, 8.5vw, 112px);
  display: inline-block;
}
.calc-need-unit { font-size: 20px; font-weight: 500; color: var(--ink-soft); }
.calc-card-acc .calc-need-unit { color: var(--accent-ink); }
.calc-need-impossible { color: oklch(0.55 0.18 28); }

/* GPA per-course distribution */
.calc-dist {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
  flex-wrap: wrap;
  max-width: 100%;
}
.calc-dist-row { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.calc-dist-num {
  font-size: clamp(48px, 5.5vw, 80px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
}
.calc-dist-tag {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 4px 8px;
  border: 1.5px solid var(--ink);
  background: var(--bg);
  white-space: nowrap;
}
.calc-card-acc .calc-dist-tag { background: rgba(255,255,255,0.6); }
.calc-dist-plus {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 300;
  color: var(--ink-soft);
  line-height: 0.9;
  align-self: center;
}

.calc-verdict {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
  margin-top: 4px;
  text-wrap: pretty;
}
.calc-verdict.bad { color: oklch(0.42 0.18 28); }

/* ── Unit table ─────────────────────────────────────────────────────── */
.table-sec { padding-bottom: 40px; }
.utbl {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 14px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.utbl thead th {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--ink);
  font-weight: 600;
}
.utbl tbody tr {
  border-bottom: 1px dotted var(--ink-faint);
  transition: background 100ms;
}
.utbl tbody tr:hover { background: var(--bg-2); }
.utbl td {
  padding: 14px 12px;
  vertical-align: middle;
}
.td-mono { font-family: var(--mono); font-size: 13px; }
.td-title { font-weight: 500; letter-spacing: -0.005em; }
.td-mark { font-weight: 700; font-size: 16px; font-variant-numeric: tabular-nums; }

.tag {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  border: 1px solid var(--ink);
}
.tag-HD { background: var(--accent); }
.tag-D { background: var(--bg-2); }
.tag-Cr { background: var(--bg-2); }
.tag-P { background: var(--bg); }
.tag-F { background: var(--ink); color: var(--bg); }

/* ── Reset row ──────────────────────────────────────────────────────── */
.reset-row { padding: 24px 0 8px; text-align: center; }
.reset-btn {
  background: var(--ink);
  color: var(--bg);
  border: none;
  padding: 18px 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}
.reset-btn:hover { background: var(--accent); color: var(--ink); }

/* ── Footer ─────────────────────────────────────────────────────────── */
.ft {
  margin-top: 48px;
  border-top: 1px solid var(--rule);
  padding: 28px 0 36px;
}
.ft-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}
.ft-h {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 8px;
}
.ft-cols p { margin: 0; font-size: 13.5px; line-height: 1.5; color: var(--ink); max-width: 50ch; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 880px) {
  .hdr { grid-template-columns: 1fr; gap: 18px; }
  .hdr-meta { align-items: flex-start; text-align: left; }
  .num-grid, .meme-grid, .calc-grid { grid-template-columns: 1fr; }
  .big-stat, .calc-card { border-right: none; border-bottom: 1px solid var(--ink); }
  .big-stat:last-child, .calc-card:last-child { border-bottom: none; }
  .ft-row { grid-template-columns: 1fr; }
  .ft-cols { grid-template-columns: 1fr; }
  .page { padding: 20px 20px 0; }
  .trend-pair { grid-template-columns: 1fr; }
  .chart-card { border-right: none; border-bottom: 1px solid var(--ink); }
  .chart-card:last-child { border-bottom: none; }

  /* Drop zone — parsing state */
  .drop { padding: 48px 24px; }
  .drop-h { font-size: clamp(36px, 8vw, 72px); }
  .drop-status { font-size: clamp(36px, 10vw, 72px); }

  /* Big numbers — 1-col layout has full width, so can go larger */
  .big-stat-num { font-size: clamp(64px, 18vw, 120px); }

  /* Calculators */
  .calc-card { padding: 22px 18px 24px; }
  .calc-inputs { flex-direction: column; gap: 10px; }
  .numinp { width: 100%; }
  .calc-need-num { font-size: clamp(40px, 10vw, 64px); }
  .calc-dist-num { font-size: clamp(32px, 9vw, 56px); }
  .calc-dist-plus { font-size: clamp(22px, 6vw, 36px); }

  /* Table — stack rows as cards (flex overrides iOS Safari table display) */
  .utbl { display: flex; flex-direction: column; border-bottom: none; }
  .utbl thead { display: none; }
  .utbl tbody { display: flex; flex-direction: column; }
  .utbl tbody tr {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px dotted var(--ink-faint);
  }
  .utbl tbody tr:last-child { border-bottom: none; }
  .utbl td {
    display: inline-flex;
    align-items: baseline;
    gap: 3px;
    padding: 2px 10px 2px 0;
  }
  .utbl .td-title {
    flex: 0 0 100%;
    padding: 0 0 6px 0;
    font-size: 14px;
    white-space: normal;
  }
  .utbl td[data-label="CR"] { display: none; }
  .utbl td::before {
    content: attr(data-label);
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: var(--ink-soft);
    text-transform: uppercase;
    flex-shrink: 0;
  }
  .utbl .td-title::before { display: none; }
}

/* ── Desktop big-stat step-up sizes (2-col layout) ──────────────────── */
@media (min-width: 1024px) { .big-stat-num { font-size: 96px; } }
@media (min-width: 1280px) { .big-stat-num { font-size: 120px; } }