/* ============================================================
   CALCULATE THIS — Tactical Console v3.0 (Light Mode)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Surfaces — light cool steel */
  --bg:       #E8ECF2;
  --bg-2:     #DDE3EB;
  --panel:    #FFFFFF;
  --panel-hi: #F6F8FB;
  --panel-lo: #EAEEF4;

  /* Dark surfaces — for readout + footer */
  --dark:       #131C2A;
  --dark-2:     #1A2435;
  --dark-line:  #2E3C54;

  /* Lines */
  --line:     #C6D0DD;
  --line-hot: #8492AA;

  /* Text */
  --text:     #0E1726;
  --text-2:   #3E4D63;
  --muted:    #6F7E94;

  /* HUD — darker for light bg readability */
  --amber:      #D8690E;
  --amber-hot:  #EA7E1C;
  --amber-dim:  #9C4906;
  --amber-bright: #FFA02E;     /* used only on dark readout */
  --cyan:       #086FAE;
  --cyan-hot:   #0D86CC;
  --cyan-bright:#4DD4FF;        /* used only on dark readout */
  --green:      #128648;
  --red:        #B62C3A;

  /* Type */
  --display: 'Rajdhani', 'Helvetica Neue', sans-serif;
  --body:    'Inter', 'Helvetica Neue', sans-serif;
  --mono:    'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(8, 111, 174, 0.06), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(216, 105, 14, 0.05), transparent 60%);
  background-attachment: fixed;
}

/* Hex grid overlay — subtle blue-gray lines */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='100' viewBox='0 0 56 100'%3E%3Cg fill='none' stroke='%238492AA' stroke-width='0.6' stroke-opacity='0.25'%3E%3Cpolygon points='28,1 55,16 55,49 28,64 1,49 1,16'/%3E%3Cpolygon points='28,51 55,66 55,99 28,114 1,99 1,66'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 56px 100px;
}

main, header, footer, nav, section { position: relative; z-index: 3; }

/* ============================================================
   LAYOUT SHELL
   ============================================================ */
.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 720px) {
  .shell { padding: 0 18px; }
  body { font-size: 14px; }
}

/* ============================================================
   TOP BAR — dark band for definition
   ============================================================ */
.topbar {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--dark);
  color: var(--panel);
  position: relative;
}

.topbar::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber-dim) 30%, var(--amber) 50%, var(--amber-dim) 70%, transparent);
  opacity: 0.7;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.topbar-left {
  display: flex;
  gap: 24px;
  align-items: center;
}

.brand {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--panel);
  text-decoration: none;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand::before {
  content: '◢';
  color: var(--amber-bright);
  font-size: 14px;
}

.brand::after {
  content: '◣';
  color: var(--cyan-bright);
  font-size: 14px;
}

.topbar-meta {
  color: #95A3BB;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.topbar-meta::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #4FE8A8;
  border-radius: 50%;
  box-shadow: 0 0 8px #4FE8A8;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}

.topbar-nav {
  display: flex;
  gap: 20px;
}

.topbar-nav a {
  color: #95A3BB;
  text-decoration: none;
  transition: color 0.15s;
}

.topbar-nav a:hover {
  color: var(--amber-bright);
}

/* ============================================================
   MASTHEAD
   ============================================================ */
.masthead {
  padding: 70px 0 50px;
  border-bottom: 1px solid var(--line-hot);
  position: relative;
}

.masthead::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 32px;
  width: 180px; height: 2px;
  background: var(--amber);
  box-shadow: 0 0 14px rgba(216, 105, 14, 0.5);
}

.masthead-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 600;
}

.masthead-eyebrow::before {
  content: '▸';
  color: var(--amber);
  font-size: 14px;
}

.masthead-eyebrow::after {
  content: '';
  flex: 1;
  max-width: 200px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.masthead-title {
  font-family: var(--display);
  font-size: clamp(56px, 10vw, 144px);
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 20px;
}

.masthead-title em {
  font-style: normal;
  color: var(--amber);
  text-shadow: 0 4px 24px rgba(216, 105, 14, 0.2);
}

.masthead-deck {
  font-family: var(--body);
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 400;
  color: var(--text-2);
  max-width: 640px;
  line-height: 1.55;
  margin-top: 28px;
  border-left: 2px solid var(--amber);
  padding-left: 18px;
}

.masthead-meta {
  position: absolute;
  right: 32px;
  bottom: 70px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: right;
  line-height: 1.9;
  padding: 14px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.masthead-meta strong {
  color: var(--amber);
  font-weight: 600;
}

@media (max-width: 900px) {
  .masthead-meta { display: none; }
  .masthead { padding: 50px 0 36px; }
}

/* ============================================================
   STICKY CATEGORY NAV
   ============================================================ */
.cat-nav {
  position: sticky;
  top: 0;
  background: rgba(232, 236, 242, 0.95);
  border-bottom: 1px solid var(--line-hot);
  z-index: 50;
  padding: 12px 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(14, 23, 38, 0.06);
}

.cat-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  align-items: center;
}

.cat-nav-label {
  color: var(--amber);
  margin-right: 6px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  font-weight: 700;
}

.cat-nav a {
  color: var(--text-2);
  text-decoration: none;
  transition: color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.cat-nav a:hover { color: var(--cyan); }

.cat-nav a .count {
  color: var(--amber);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-weight: 600;
}

@media (max-width: 720px) {
  .cat-nav-list { gap: 6px 16px; }
}

/* ============================================================
   CATEGORY SECTIONS
   ============================================================ */
.cat {
  padding-top: 60px;
  scroll-margin-top: 56px;
}

.cat:first-of-type { padding-top: 50px; }

.cat-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-hot);
  margin-bottom: 0;
  gap: 20px;
  position: relative;
}

.cat-head::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 140px;
  height: 2px;
  background: var(--amber);
  box-shadow: 0 0 12px rgba(216, 105, 14, 0.5);
}

.cat-title {
  font-family: var(--display);
  font-size: clamp(36px, 4.5vw, 52px);
  line-height: 0.95;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.cat-title::before {
  content: '//';
  color: var(--amber);
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
}

.cat-title .dot {
  color: var(--amber);
  font-style: normal;
}

.cat-count {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  white-space: nowrap;
  padding: 6px 10px;
  border: 1px solid var(--cyan);
  background: rgba(8, 111, 174, 0.06);
  font-weight: 600;
}

.cat-desc {
  grid-column: 1 / -1;
  font-family: var(--body);
  color: var(--text-2);
  font-size: 15px;
  margin-top: 4px;
  max-width: 580px;
}

/* ============================================================
   CATEGORY GRID — CALCULATOR CARDS
   ============================================================ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.cat-card {
  padding: 24px 22px 70px;
  text-decoration: none;
  color: var(--text);
  display: block;
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: all 0.2s ease;
  min-height: 200px;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.cat-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--amber-dim);
  transition: background 0.2s, box-shadow 0.2s;
}

.cat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='50' viewBox='0 0 28 50'%3E%3Cg fill='none' stroke='%238492AA' stroke-width='0.5' stroke-opacity='0.15'%3E%3Cpolygon points='14,0.5 27.5,8 27.5,24.5 14,32 0.5,24.5 0.5,8'/%3E%3Cpolygon points='14,25.5 27.5,33 27.5,49.5 14,57 0.5,49.5 0.5,33'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 28px 50px;
  opacity: 0.7;
}

.cat-card:hover {
  background: var(--panel-hi);
  border-color: var(--amber);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(216, 105, 14, 0.15), 0 0 0 1px rgba(216, 105, 14, 0.3);
}

.cat-card:hover::before {
  background: var(--amber);
  box-shadow: 0 0 12px var(--amber);
}

.cat-card:hover .index-arrow {
  color: var(--amber);
  transform: translateX(4px);
}

.cat-card:hover .cat-card-title {
  color: var(--amber);
}

.cat-card-title {
  font-family: var(--display);
  font-size: 24px;
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 10px;
  transition: color 0.2s;
  position: relative;
  z-index: 1;
}

.cat-card-blurb {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

.index-arrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  position: absolute;
  bottom: 20px;
  left: 22px;
  transition: transform 0.2s, color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 1;
  font-weight: 600;
}

@media (max-width: 980px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { min-height: auto; padding: 22px 20px 60px; }
}

/* ============================================================
   CALCULATOR PAGE — HEADER
   ============================================================ */
.calc-header {
  padding: 50px 0 40px;
  border-bottom: 1px solid var(--line-hot);
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 50px;
  align-items: end;
  position: relative;
}

.calc-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 180px; height: 2px;
  background: var(--amber);
  box-shadow: 0 0 14px rgba(216, 105, 14, 0.5);
}

.calc-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.calc-kicker::before {
  content: '◆';
  color: var(--amber);
}

.calc-title {
  font-family: var(--display);
  font-size: clamp(42px, 5.5vw, 76px);
  line-height: 0.95;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text);
}

.calc-title em {
  font-style: normal;
  color: var(--amber);
  text-shadow: 0 4px 20px rgba(216, 105, 14, 0.2);
}

.calc-deck {
  font-family: var(--body);
  font-size: 16px;
  color: var(--text-2);
  margin-top: 20px;
  max-width: 560px;
  line-height: 1.55;
  border-left: 2px solid var(--amber);
  padding-left: 16px;
}

.calc-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 2;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 18px 22px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.calc-meta strong {
  color: var(--amber);
  font-weight: 600;
}

@media (max-width: 820px) {
  .calc-header { grid-template-columns: 1fr; gap: 28px; }
}

/* ============================================================
   CALCULATOR BODY LAYOUT
   ============================================================ */
.calc-body {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  padding: 50px 0;
}

@media (max-width: 980px) {
  .calc-body { grid-template-columns: 1fr; gap: 32px; }
}

/* ============================================================
   THE INSTRUMENT — LIGHT PANEL
   ============================================================ */
.instrument {
  background: var(--panel);
  border: 1px solid var(--line-hot);
  position: relative;
  padding: 0;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  box-shadow: 0 4px 24px rgba(14, 23, 38, 0.06);
}

.instrument::before {
  content: '◢ INSTRUMENT.MODULE ◣';
  position: absolute;
  top: 14px;
  left: 24px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--amber);
  font-weight: 700;
  z-index: 2;
}

.instrument-inner {
  padding: 56px 32px 32px;
  position: relative;
  background: var(--panel);
}

.instrument-inner::before {
  content: 'STATUS // ACTIVE';
  position: absolute;
  top: 18px;
  right: 28px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--green);
  font-weight: 600;
}

@media (max-width: 620px) {
  .instrument-inner { padding: 50px 18px 24px; }
  .instrument-inner::before { display: none; }
}

/* ============================================================
   FIELDS
   ============================================================ */
.field-group {
  margin-bottom: 28px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
}

.field-group:first-of-type {
  padding-top: 8px;
  border-top: none;
}

.field-group-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.field-group-label::before {
  content: '▸';
  color: var(--amber);
  font-size: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 520px) {
  .field-row { grid-template-columns: 1fr; }
}

.field label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 8px;
  font-weight: 500;
}

input[type="number"],
input[type="text"],
input[type="date"],
select {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  background: var(--panel-lo);
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  width: 100%;
  border-radius: 0;
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="date"]:focus,
select:focus {
  background: var(--panel);
  border-color: var(--cyan);
  border-left-color: var(--amber);
  box-shadow: 0 0 0 1px var(--cyan), 0 0 8px rgba(8, 111, 174, 0.15);
}

input[type="number"]::placeholder,
input[type="text"]::placeholder {
  color: var(--muted);
}

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none; margin: 0;
}
input[type=number] { -moz-appearance: textfield; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23D8690E'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 28px;
  cursor: pointer;
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--amber);
  cursor: pointer;
}

/* ============================================================
   TOGGLE BUTTONS
   ============================================================ */
.toggle-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--line-hot);
  background: var(--panel);
  margin-bottom: 8px;
}

.toggle-group button {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: transparent;
  border: none;
  padding: 10px 14px;
  cursor: pointer;
  color: var(--text-2);
  transition: all 0.15s;
  border-right: 1px solid var(--line);
}

.toggle-group button:last-child { border-right: none; }

.toggle-group button.active {
  background: var(--amber);
  color: var(--panel);
  box-shadow: inset 0 0 0 1px var(--amber-dim);
}

.toggle-group button:not(.active):hover {
  background: var(--panel-lo);
  color: var(--cyan);
}

/* ============================================================
   READOUT — DARK ACCENT PANEL (the screen)
   ============================================================ */
.readout {
  margin-top: 0;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--panel-lo) 100%);
  color: var(--text);
  padding: 58px 32px 28px;
  position: relative;
  border-top: 4px solid var(--amber);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(14, 23, 38, 0.06);
}

.readout::before {
  content: '▸ YOUR RESULTS';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 11px 24px;
  background: linear-gradient(90deg, var(--amber) 0%, var(--amber-hot) 100%);
  font-family: var(--display);
  font-size: 14px;
  letter-spacing: 0.22em;
  color: #FFFFFF;
  font-weight: 700;
  text-transform: uppercase;
  z-index: 2;
}

.readout::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 3px,
    rgba(8, 111, 174, 0.018) 3px,
    rgba(8, 111, 174, 0.018) 4px
  );
}

.readout > * { position: relative; z-index: 1; }

.readout-primary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 0 18px;
  border-bottom: 1px dashed rgba(216, 105, 14, 0.4);
  margin-bottom: 18px;
  gap: 16px;
  flex-wrap: wrap;
}

.readout-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
}

.readout-value {
  font-family: var(--display);
  font-size: 56px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--amber);
  text-shadow: 0 0 14px rgba(216, 105, 14, 0.15);
  text-transform: uppercase;
}

.readout-value-sm {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

.readout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
}

.readout-cell {
  padding: 4px 0;
}

.readout-cell .readout-label {
  display: block;
  margin-bottom: 4px;
}

.readout-cell .readout-value-sm {
  font-size: 17px;
  color: var(--amber);
  font-weight: 700;
}

/* ============================================================
   SIDE NOTES
   ============================================================ */
.sidenotes {
  font-family: var(--body);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-2);
}

.sidenotes-block {
  margin-bottom: 18px;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  box-shadow: 0 2px 8px rgba(14, 23, 38, 0.04);
}

.sidenotes-block:last-child {
  border-left-color: var(--amber);
  margin-bottom: 0;
}

.sidenotes h3 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
  font-weight: 700;
}

.sidenotes-block:last-child h3 {
  color: var(--amber) !important;
}

.sidenotes p { margin-bottom: 8px; color: var(--text-2); }
.sidenotes p:last-child { margin-bottom: 0; }
.sidenotes strong { color: var(--text); font-weight: 600; }

.sidenotes-marg {
  color: var(--muted);
  font-size: 12.5px;
  font-style: italic;
}

/* ============================================================
   LONG-FORM CONTENT
   ============================================================ */
.longform {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 0 100px;
}

.longform h2 {
  font-family: var(--display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 48px 0 20px;
  line-height: 1.05;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.longform h2::before {
  content: '//';
  color: var(--amber);
  font-family: var(--mono);
  font-size: 22px;
}

.longform h2 em {
  font-style: normal;
  color: var(--amber);
}

.longform h3 {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 28px 0 10px;
  color: var(--cyan);
}

.longform p {
  margin-bottom: 14px;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--text-2);
}

.longform .lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--text);
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 2px solid var(--amber);
}

.longform .lede::first-letter {
  font-family: var(--display);
  font-size: 52px;
  float: left;
  line-height: 0.9;
  padding: 4px 10px 0 0;
  color: var(--amber);
  font-weight: 700;
}

/* Inline formula boxes used in longform */
.longform p[style*="font-family"][style*="mono"] {
  background: var(--panel) !important;
  border-left: 3px solid var(--amber) !important;
  border-top: 1px solid var(--line) !important;
  border-right: 1px solid var(--line) !important;
  border-bottom: 1px solid var(--line) !important;
  color: var(--cyan) !important;
  font-size: 14px !important;
  padding: 16px 20px !important;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 8px rgba(14, 23, 38, 0.04);
}

/* ============================================================
   TABLES
   ============================================================ */
.instrument-inner table { width: 100%; border-collapse: collapse; }
.instrument-inner table th {
  font-family: var(--mono) !important;
  font-size: 9px !important;
  letter-spacing: 0.16em !important;
  color: var(--cyan) !important;
  text-transform: uppercase;
  font-weight: 700 !important;
  border-bottom: 1px solid var(--line-hot) !important;
  padding: 10px 6px !important;
}
.instrument-inner table td {
  border-bottom: 1px solid var(--line) !important;
  padding: 8px 6px !important;
  color: var(--text) !important;
  font-family: var(--mono) !important;
  font-size: 13px !important;
}
.instrument-inner table td[style*="accent"] {
  color: var(--amber) !important;
  font-weight: 600;
}

.instrument-inner table input[type="text"],
.instrument-inner table input[type="number"] {
  border: none !important;
  border-bottom: 1px solid var(--line) !important;
  border-left: none !important;
  background: transparent !important;
  padding: 4px 0 !important;
  font-size: 13px !important;
}

.instrument-inner table input:focus {
  border-bottom-color: var(--amber) !important;
  box-shadow: none !important;
}

/* ============================================================
   FOOTER — dark base
   ============================================================ */
.footer {
  border-top: 2px solid var(--amber);
  margin-top: 80px;
  padding: 50px 0 30px;
  background: var(--dark);
  color: #95A3BB;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: -2px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--amber-bright), transparent);
  box-shadow: 0 0 12px var(--amber-bright);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

.footer-brand {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 14px;
  color: #DEE6F2;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand::before {
  content: '◢';
  color: var(--amber-bright);
}

.footer-brand::after {
  content: '◣';
  color: var(--cyan-bright);
}

.footer-tagline {
  color: #95A3BB;
  max-width: 340px;
  font-size: 14px;
}

.footer h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber-bright);
  margin-bottom: 14px;
  font-weight: 700;
}

.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; }
.footer a, .footer li {
  color: #95A3BB;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.15s;
}
.footer a:hover { color: var(--cyan-bright); }

.footer-base {
  border-top: 1px solid var(--dark-line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #56657E;
}

@media (max-width: 620px) {
  .footer-base { flex-direction: column; gap: 8px; }
}

/* ============================================================
   HELPERS
   ============================================================ */
.serif-em { color: var(--amber); font-weight: 600; }
.mono { font-family: var(--mono); color: var(--cyan); }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rise > * { opacity: 0; animation: rise 0.7s ease forwards; }
.rise > *:nth-child(1) { animation-delay: 0.05s; }
.rise > *:nth-child(2) { animation-delay: 0.18s; }
.rise > *:nth-child(3) { animation-delay: 0.32s; }
.rise > *:nth-child(4) { animation-delay: 0.46s; }

::selection {
  background: var(--amber);
  color: var(--panel);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--line-hot); border: 2px solid var(--bg-2); }
::-webkit-scrollbar-thumb:hover { background: var(--amber); }