/* ───────────────────────────────────────────────────────────────
   FreeAI // Brutalist Control Room
   palette: bone / charcoal / radioactive amber / signal cyan
   type: Fraunces (display serif) + JetBrains Mono (everything else)
   ─────────────────────────────────────────────────────────────── */

:root {
  --bone:        #f1ece1;
  --bone-2:      #e6dfce;
  --bone-3:      #d8cfb6;
  --char:        #16140f;
  --char-2:      #2a2620;
  --char-3:      #3c372d;
  --amber:       #ff7a18;
  --amber-soft:  #ffb066;
  --cyan:        #14d6c4;
  --rose:        #ff4d4d;
  --moss:        #6da34d;

  --line:        1.5px solid var(--char);
  --line-thick:  3px solid var(--char);

  --serif:  "Fraunces", "Times New Roman", serif;
  --mono:   "JetBrains Mono", ui-monospace, "Cascadia Mono", monospace;

  --shadow-hard:    6px 6px 0 var(--char);
  --shadow-hard-sm: 3px 3px 0 var(--char);

  --noise-url: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='matrix' values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.32 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ─── dark mode: warm CRT phosphor ───
   Warm dark-brown base, cream text, amber stays as-is.
   Contrast targets: body text ≥ 11:1, labels ≥ 5.5:1 (WCAG AA+). */
body.dark {
  --bone:        #1a1814;
  --bone-2:      #242019;
  --bone-3:      #332e25;
  --char:        #f1ece1;
  --char-2:      #ddd6c6;
  --char-3:      #b5ac98;

  --line:        1.5px solid var(--char-3);
  --line-thick:  3px solid var(--char-3);

  --shadow-hard:    6px 6px 0 rgba(0,0,0,0.45);
  --shadow-hard-sm: 3px 3px 0 rgba(0,0,0,0.35);
}

/* Texture overlays adapt for dark bg */
body.dark .grain  { opacity: .10; mix-blend-mode: screen; }
body.dark .scanlines {
  background: repeating-linear-gradient(
    to bottom,
    transparent 0, transparent 3px,
    rgba(241,236,225,0.018) 3px, rgba(241,236,225,0.018) 4px
  );
  mix-blend-mode: screen;
}
body.dark::before {
  background-image:
    linear-gradient(to right, rgba(241,236,225,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(241,236,225,0.035) 1px, transparent 1px);
}

/* Layout overrides */
body.dark .masthead {
  background:
    radial-gradient(circle at 92% 12%, rgba(255,122,24,0.14), transparent 38%),
    var(--bone);
}
body.dark .ribbon {
  background: #100e0a;
  color: #f1ece1;
  border-bottom-color: var(--char-3);
}
body.dark .ribbon__item  { color: #ddd6c6; border-right-color: rgba(241,236,225,0.12); }
body.dark .ribbon__item:hover { background: #2a2418; color: #f1ece1; }
body.dark .ribbon__item--active { background: var(--amber); color: #1a1814; }

body.dark .savings-strip {
  background:
    linear-gradient(90deg, rgba(255,122,24,0.1) 0%, transparent 60%),
    var(--bone-2);
}

/* Cards & surfaces */
body.dark .provider-card,
body.dark .strategy-card,
body.dark .kpi-card,
body.dark .chart-card,
body.dark .api-card {
  background: var(--bone-2);
  border-color: var(--char-3);
}
body.dark .provider-card__corner,
body.dark .modal__corner { color: var(--char-3); }

/* Modals */
body.dark .modal__backdrop { background: rgba(0,0,0,0.72); }
body.dark .modal__card { background: var(--bone-2); border-color: var(--char-3); }

/* Forms */
body.dark input, body.dark select, body.dark textarea {
  background: var(--bone);
  color: var(--char);
  border-color: var(--char-3);
}
body.dark input::placeholder { color: var(--char-3); }

/* Code & footer */
body.dark code { background: #100e0a; color: var(--amber-soft); }
body.dark .signoff { background: #100e0a; border-top-color: var(--char-3); color: #b5ac98; }
body.dark .signoff__line { color: #ddd6c6; }
body.dark .signoff__meta code { background: #242019; color: var(--amber-soft); }

/* Playground output: keep dark terminal look in both themes */
body.dark .playground__output {
  background: #100e0a;
  color: #f1ece1;
  border-color: var(--char-3);
}
body.dark .playground__output--small {
  background: #100e0a;
  color: #f1ece1;
  border-color: var(--char-3);
}
body.dark .output-empty { color: #b5ac98; }
body.dark .output-empty pre { color: var(--amber); opacity: 0.7; }

/* Meter fills stay visible */
body.dark .meter__bar { background: var(--bone-3); }
body.dark .ghost-button { border-color: var(--char-3); color: var(--char); }
body.dark .ghost-button:hover { background: var(--char-3); color: var(--bone); }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bone);
  color: var(--char);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
  overflow-x: hidden;
}

body::before {
  /* faint grid backplate */
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22,20,15,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22,20,15,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  background-image: var(--noise-url);
  opacity: .35;
  mix-blend-mode: multiply;
  z-index: 1;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(22,20,15,0.025) 3px,
    rgba(22,20,15,0.025) 4px
  );
  z-index: 2;
  mix-blend-mode: multiply;
}

/* ─────────────── MASTHEAD ─────────────── */

.masthead {
  position: relative;
  z-index: 5;
  padding: 32px 56px 28px;
  border-bottom: var(--line-thick);
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 2.4fr minmax(280px, 1fr);
  gap: 48px;
  align-items: end;
  background:
    radial-gradient(circle at 92% 12%, rgba(255,122,24,0.12), transparent 38%),
    var(--bone);
}

.masthead__brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.brand-mark {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.brand-mark__bracket {
  color: var(--amber);
  font-weight: 400;
  font-size: 32px;
}
.brand-mark__core { font-style: italic; }

.brand-meta {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--char-3);
}

.masthead__title h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(36px, 5.2vw, 78px);
  line-height: 0.94;
  letter-spacing: -0.035em;
  margin: 0;
}
.display-line { display: block; }
.display-line.italic { font-style: italic; color: var(--amber); font-weight: 400; }

/* Status panel: 3-column grid with a full-width savings strip below.
   The border + background live here; children have NO outer margin. */
.masthead__status {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border: var(--line);
  background: var(--bone-2);
  box-shadow: var(--shadow-hard-sm);
  overflow: hidden;            /* keeps savings-strip inside the border */
}
.status-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px 14px 16px;
  border-right: 1px dashed var(--char-3);
}
.status-block:nth-child(3) { border-right: 0; }
.status-block__label {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--char-3);
}
.status-block__value {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
}

/* ─── savings strip — spans full width below the 3 status blocks ─── */
.savings-strip {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-top: 2px solid var(--amber);
  background:
    linear-gradient(90deg, rgba(255,122,24,0.08) 0%, transparent 60%),
    var(--bone-2);
}
.savings-strip__label {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--amber);
  font-weight: 500;
  white-space: nowrap;
}
.savings-strip__amount {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 900;
  color: var(--amber);
  letter-spacing: -0.02em;
  text-shadow: 0 0 12px rgba(255,122,24,0.25);
  transition: text-shadow 0.4s ease;
  line-height: 1;
}
.savings-strip__amount.is-updating {
  text-shadow: 0 0 24px rgba(255,122,24,0.6);
}
.savings-dollar {
  font-size: 13px;
  font-weight: 400;
  vertical-align: top;
  margin-right: 1px;
  opacity: 0.7;
}
.savings-strip__tokens {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--char-3);
  text-transform: uppercase;
  white-space: nowrap;
}

.dot {
  width: 8px;
  height: 8px;
  background: var(--moss);
  display: inline-block;
}
.dot--pulse {
  background: var(--amber);
  animation: pulse 1.4s steps(2, jump-end) infinite;
}
.dot--down { background: var(--rose); }
.dot--idle { background: var(--char-3); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.25; }
}

/* ─────────────── RIBBON NAV ─────────────── */

.ribbon {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 0 56px;
  background: var(--char);
  color: var(--bone);
  border-bottom: var(--line-thick);
}
.ribbon__item {
  position: relative;
  padding: 14px 28px 14px 22px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-right: 1px dashed rgba(241,236,225,0.18);
  transition: background .18s, color .18s;
}
.ribbon__item:hover { background: var(--char-2); color: var(--amber-soft); }
.ribbon__item--active {
  background: var(--amber);
  color: var(--char);
}
.ribbon__item--active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 3px;
  background: var(--amber);
}
.ribbon__index {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  font-weight: 600;
}
/* Desktop: items wrapper is transparent (just groups for mobile) */
.ribbon__items { display: contents; }

/* Desktop: burger & active label hidden */
.ribbon__burger { display: none; }
.ribbon__active-label { display: none; }

.ribbon__burger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--bone);
  transition: transform .25s, opacity .25s;
}

.ribbon__rule {
  flex: 1;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(241,236,225,0.18) 0,
    rgba(241,236,225,0.18) 1px,
    transparent 1px,
    transparent 8px
  );
}

/* ─────────────── PANELS ─────────────── */

.stage {
  position: relative;
  z-index: 5;
  padding: 56px 56px 80px;
}

.panel {
  display: none;
  animation: panelIn .45s cubic-bezier(.2,.7,.2,1) both;
}
.panel--active { display: block; }

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

.panel__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  border-bottom: var(--line);
  padding-bottom: 14px;
  margin-bottom: 18px;
}
.panel__head-left { display: flex; align-items: baseline; gap: 14px; }
.ascii-arrow {
  font-family: var(--mono);
  color: var(--amber);
  font-size: 18px;
  letter-spacing: -0.04em;
}
.panel__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 3vw, 44px);
  letter-spacing: -0.025em;
  margin: 0;
  font-style: italic;
}
.panel__lede {
  max-width: 720px;
  font-size: 13px;
  color: var(--char-2);
  margin: 0 0 36px;
  line-height: 1.65;
}
.panel__lede em { font-family: var(--serif); font-size: 16px; color: var(--char); }

/* ─────────────── BUTTONS ─────────────── */

.ghost-button {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: var(--line);
  background: var(--bone);
  color: var(--char);
  padding: 9px 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: transform .12s, box-shadow .12s, background .12s;
}
.ghost-button:hover {
  background: var(--char);
  color: var(--bone);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-sm);
}
.ghost-button:active { transform: none; box-shadow: none; }
.ghost-button__char { color: var(--amber); font-size: 14px; }
.ghost-button--small { padding: 6px 10px; font-size: 10px; }

.primary-button {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: var(--line-thick);
  background: var(--amber);
  color: var(--char);
  padding: 12px 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  box-shadow: var(--shadow-hard);
  transition: transform .12s, box-shadow .12s, background .12s;
}
.primary-button:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--char);
  background: var(--amber-soft);
}
.primary-button:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--char);
}
.primary-button__char { font-size: 16px; }

.mini-btn {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  background: var(--char);
  color: var(--bone);
  border: var(--line);
  padding: 7px 10px;
  cursor: pointer;
}
.mini-btn:hover { background: var(--amber); color: var(--char); }

/* ─────────────── PROVIDER GRID ─────────────── */

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.provider-card {
  position: relative;
  background: var(--bone-2);
  border: var(--line);
  padding: 22px 22px 18px;
  box-shadow: var(--shadow-hard-sm);
  transition: transform .18s, box-shadow .18s;
  min-width: 0;
}
.provider-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--char);
}
.provider-card.is-disabled {
  opacity: 1;
}
.provider-card.is-disabled .provider-card__head,
.provider-card.is-disabled .provider-card__tags,
.provider-card.is-disabled .provider-card__rows {
  opacity: 0.45;
}
.provider-card.is-disabled .provider-card__foot .switch {
  opacity: 0.45;
}
.provider-card.is-error { border-color: var(--rose); }

.provider-card__corner {
  position: absolute;
  font-size: 14px;
  color: var(--amber);
  line-height: 1;
}
.provider-card__corner--tl { top: 4px; left: 6px; }
.provider-card__corner--tr { top: 4px; right: 6px; }
.provider-card__corner--bl { bottom: 4px; left: 6px; }
.provider-card__corner--br { bottom: 4px; right: 6px; }

.provider-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.provider-card__name {
  font-family: var(--serif);
  font-weight: 600;
  font-style: italic;
  font-size: 24px;
  letter-spacing: -0.02em;
  text-transform: capitalize;
  min-width: 0;
  word-break: break-word;
}
.provider-card__status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.provider-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 16px;
}
.tag {
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 7px;
  border: 1px dashed var(--char-3);
  color: var(--char-2);
}

.provider-card__rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px dashed var(--char-3);
  padding-top: 14px;
}
.provider-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.provider-row__label {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--char-3);
  text-transform: uppercase;
}
.provider-row__field {
  display: flex;
  gap: 6px;
  min-width: 0;
}
.provider-row__field input,
.provider-row__field select {
  flex: 1;
  min-width: 0;
  font-family: var(--mono);
  font-size: 12px;
  padding: 8px 10px;
  background: var(--bone);
  border: var(--line);
  color: var(--char);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
}
.provider-row__field input { cursor: text; }
.provider-row__field input:focus,
.provider-row__field select:focus {
  outline: none;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--amber);
}

.provider-row--limits {
  flex-direction: row;
  gap: 10px;
}
.limit-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.limit-input {
  font-family: var(--mono);
  font-size: 11px;
  padding: 6px 8px;
  background: var(--bone);
  border: var(--line);
  color: var(--char);
  width: 100%;
}
.limit-input:focus {
  outline: none;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--amber);
}

.provider-row--meters {
  flex-direction: row;
  gap: 14px;
}
.meter { flex: 1; }
.meter__label {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--char-3);
  margin-bottom: 4px;
}
.meter__bar {
  height: 8px;
  background: var(--bone);
  border: 1px solid var(--char);
  position: relative;
  overflow: hidden;
}
.meter__fill {
  position: absolute;
  inset: 0 100% 0 0;
  background: var(--amber);
  transition: right .4s;
}
.meter__fill.is-warn { background: var(--rose); }
.meter__fill--cyan { background: var(--cyan); }
.meter__value {
  font-size: 10px;
  margin-top: 3px;
  font-weight: 700;
  white-space: nowrap;
}

.provider-row--latency {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}
.latency-value { font-weight: 700; font-size: 12px; }

.provider-row--error .error-value {
  font-size: 10px;
  color: var(--rose);
  font-weight: 700;
  word-break: break-word;
}

.provider-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--char-3);
}

/* ─────────────── SWITCH ─────────────── */

.switch { position: relative; display: inline-block; cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch__track {
  display: inline-flex;
  align-items: center;
  position: relative;
  width: 64px;
  height: 26px;
  border: var(--line);
  background: var(--bone);
  font-size: 9px;
  letter-spacing: 0.12em;
  font-weight: 700;
}
.switch__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 18px;
  background: var(--char);
  transition: left .18s, background .18s;
}
.switch__on, .switch__off {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.switch__on  { right: 8px; opacity: 0; color: var(--char); }
.switch__off { left: 32px; color: var(--char-3); }

.switch input:checked ~ .switch__track { background: var(--amber); }
.switch input:checked ~ .switch__track .switch__thumb { left: 38px; background: var(--char); }
.switch input:checked ~ .switch__track .switch__on  { opacity: 1; }
.switch input:checked ~ .switch__track .switch__off { opacity: 0; }

.switch--small .switch__track { width: 52px; height: 22px; }
.switch--small .switch__thumb { width: 18px; height: 14px; }
.switch--small .switch__on    { right: 6px; font-size: 8px; }
.switch--small .switch__off   { left: 26px; font-size: 8px; }
.switch--small input:checked ~ .switch__track .switch__thumb { left: 30px; }

/* ─────────────── STRATEGY GRID ─────────────── */

.strategy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}
.strategy-card {
  background: var(--bone-2);
  border: var(--line);
  padding: 20px 18px;
  cursor: pointer;
  position: relative;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.strategy-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-sm);
}
.strategy-card.is-active {
  background: var(--char);
  color: var(--bone);
  box-shadow: var(--shadow-hard);
  transform: translate(-3px, -3px);
}
.strategy-card.is-active .strategy-card__name { color: var(--amber); }

.strategy-card__index {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--char-3);
  margin-bottom: 6px;
}
.strategy-card.is-active .strategy-card__index { color: var(--bone-3); }
.strategy-card__name {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.strategy-card__desc { font-size: 11px; color: var(--char-2); }
.strategy-card.is-active .strategy-card__desc { color: var(--bone-2); }

/* ─────────────── TOGGLE ROW ─────────────── */

.toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  border: var(--line);
  background: var(--bone-2);
  padding: 22px 24px;
  box-shadow: var(--shadow-hard-sm);
}
.toggle-row__copy h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  margin: 0 0 6px;
}
.toggle-row__copy p { margin: 0; font-size: 12px; color: var(--char-2); max-width: 560px; }

/* ─────────────── PLAYGROUND ─────────────── */

.playground {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 24px;
}
@media (max-width: 1100px) {
  .playground { grid-template-columns: 1fr; }
}

.playground__form {
  border: var(--line);
  background: var(--bone-2);
  padding: 22px;
  box-shadow: var(--shadow-hard-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field__label {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--char-3);
  text-transform: uppercase;
}
.field__label em { color: var(--amber); font-style: italic; }
.field textarea, .field input, .field select {
  font-family: var(--mono);
  font-size: 13px;
  padding: 10px 12px;
  background: var(--bone);
  border: var(--line);
  color: var(--char);
  resize: vertical;
}
.field textarea:focus, .field input:focus, .field select:focus {
  outline: none;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--amber);
}
.field--inline {
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 100px;
}

.playground__controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.playground__output {
  border: var(--line);
  background: var(--char);
  color: var(--bone);
  padding: 22px;
  box-shadow: var(--shadow-hard-sm);
  font-family: var(--mono);
  display: flex;
  flex-direction: column;
  min-height: 360px;
}
.output-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--char-3);
}
.output-empty pre {
  font-size: 11px;
  color: var(--amber-soft);
  opacity: 0.55;
  text-align: center;
}

.output-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--bone-3);
  text-transform: uppercase;
  border-bottom: 1px dashed var(--char-3);
  padding-bottom: 12px;
  margin-bottom: 14px;
}
.output-meta b { color: var(--amber); font-weight: 700; }
.output-body {
  white-space: pre-wrap;
  font-size: 13px;
  line-height: 1.65;
  color: var(--bone);
  flex: 1;
}
.output-fallback {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--char-3);
  font-size: 10px;
  color: var(--bone-3);
  letter-spacing: 0.12em;
}

.playground__audio {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 2px dashed var(--char-3);
}
.playground__audio-title {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--char-3);
  margin: 0 0 6px;
}
.playground__audio-lede {
  font-size: 11px;
  color: var(--char-3);
  margin: 0 0 16px;
}
.playground__audio-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 16px;
}
.playground__audio-controls input[type="file"] {
  font-family: var(--mono);
  font-size: 11px;
  padding: 8px;
  background: var(--bone);
  border: var(--line);
  color: var(--char);
  cursor: pointer;
}
.playground__output--small {
  min-height: 120px;
}
.output-fallback b { color: var(--cyan); }

/* ─────────────── API CARDS ─────────────── */

.api-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 22px;
}
.api-card {
  border: var(--line);
  background: var(--bone-2);
  box-shadow: var(--shadow-hard-sm);
  padding: 0;
  display: flex;
  flex-direction: column;
}
.api-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: var(--line);
  padding: 12px 16px;
  background: var(--char);
  color: var(--bone);
}
.api-card__verb {
  background: var(--amber);
  color: var(--char);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 3px 7px;
}
.api-card__path { font-size: 12px; }
.api-card pre {
  margin: 0;
  padding: 16px;
  background: var(--bone);
  font-size: 11px;
  border-bottom: 1px dashed var(--char-3);
  white-space: pre-wrap;
  color: var(--char-2);
}
.api-card p {
  font-size: 11px;
  margin: 0;
  padding: 12px 16px;
  color: var(--char-2);
}
.api-card code, .signoff code, .panel__lede code {
  font-family: var(--mono);
  background: var(--bone-3);
  padding: 1px 5px;
  border: 1px solid var(--char-3);
}

/* ─────────────── SIGNOFF ─────────────── */

.signoff {
  position: relative;
  z-index: 5;
  border-top: var(--line-thick);
  padding: 24px 56px;
  background: var(--char);
  color: var(--bone);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 11px;
  letter-spacing: 0.14em;
}
.signoff__line {
  font-family: var(--serif);
  font-size: 16px;
  font-style: italic;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.signoff__bracket { color: var(--amber); }
.signoff__meta code { background: var(--char-2); color: var(--amber-soft); border-color: var(--char-3); }

/* ─────────────── LOCK BUTTON & MODAL ─────────────── */

.ribbon__theme {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--bone);
  padding: 0 16px;
  font-size: 18px;
  cursor: pointer;
  border-left: 1px dashed rgba(241,236,225,0.18);
  transition: color .2s, transform .3s;
  opacity: 0.7;
}
.ribbon__theme:hover { opacity: 1; color: var(--amber); transform: rotate(180deg); }
body.dark .ribbon__theme { color: var(--amber); opacity: 1; }

.ribbon__lock {
  background: var(--char-2);
  border: none;
  color: var(--amber);
  padding: 0 22px;
  font-size: 18px;
  cursor: pointer;
  border-left: 1px dashed rgba(241,236,225,0.18);
  transition: background .15s, color .15s;
}
.ribbon__lock:hover { background: var(--amber); color: var(--char); }
.ribbon__lock.is-locked { color: var(--rose); }

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal[hidden] { display: none; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(22,20,15,0.6);
  backdrop-filter: blur(2px);
}
.modal__card {
  position: relative;
  background: var(--bone-2);
  border: var(--line-thick);
  box-shadow: var(--shadow-hard);
  padding: 32px 36px;
  max-width: 480px;
  width: calc(100% - 48px);
}
.modal__corner {
  position: absolute;
  font-size: 14px;
  color: var(--amber);
  line-height: 1;
}
.modal__corner--tl { top: 4px; left: 6px; }
.modal__corner--tr { top: 4px; right: 6px; }
.modal__corner--bl { bottom: 4px; left: 6px; }
.modal__corner--br { bottom: 4px; right: 6px; }

.modal__card h3 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: 28px;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.modal__card p {
  font-size: 12px;
  color: var(--char-2);
  line-height: 1.6;
  margin: 0 0 18px;
}
.modal__card input {
  width: 100%;
  font-family: var(--mono);
  font-size: 13px;
  padding: 12px 14px;
  background: var(--bone);
  border: var(--line);
  color: var(--char);
}
.modal__card input:focus {
  outline: none;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--amber);
}
.modal__actions {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}
.modal__hint {
  font-size: 10px !important;
  color: var(--char-3) !important;
  margin-top: 18px !important;
  letter-spacing: 0.06em;
}

.modal__card--wide {
  max-width: 640px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}
.setup-intro strong {
  color: var(--char);
}
.setup-token-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.setup-token-row input {
  flex: 1;
}
.setup-provider-block {
  margin-top: 8px;
  border-top: var(--line);
  padding-top: 16px;
}
.setup-provider-lede {
  margin: 0 0 12px !important;
}
.setup-provider-fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 220px;
  overflow-y: auto;
}
#setupError {
  color: var(--rose) !important;
  margin-top: 14px !important;
}

/* ─────────────── PROVIDER SETUP WIZARD ─────────────── */

.wizard__header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: var(--line);
}
.wizard__provider-name {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--char);
}
.wizard__free-tier {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--amber);
  background: rgba(198,155,68,0.10);
  padding: 6px 10px;
  border: 1px dashed rgba(198,155,68,0.3);
}
.wizard__steps {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  counter-reset: wizard-step;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.wizard__steps li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 12px;
  line-height: 1.7;
  color: var(--char-2);
}
.wizard__step-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--bone);
  background: var(--char);
  border-radius: 0;
}
.wizard__step-text {
  flex: 1;
  padding-top: 3px;
}
.wizard__step-text a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.wizard__step-text a:hover {
  color: var(--char);
}
.wizard__step-text code {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bone);
  padding: 1px 5px;
  border: var(--line);
}
.wizard__step-text strong {
  color: var(--char);
}
.wizard__links {
  display: flex;
  gap: 10px;
  margin-bottom: 8px;
}
.wizard__links a {
  text-decoration: none;
}
.provider-card__foot-actions {
  display: flex;
  gap: 8px;
}
.wizard-btn {
  color: var(--amber) !important;
  border-color: rgba(198,155,68,0.3) !important;
}
.wizard-btn:hover {
  background: var(--amber) !important;
  color: var(--char) !important;
}

/* ─────────────── STRATEGY DSL EDITOR ─────────────── */

.dsl-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
.dsl-section {
  margin-top: 16px;
  border-top: var(--line);
  padding-top: 14px;
}
.dsl-section__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}
.dsl-section__title {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--char);
}
.dsl-section__hint {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--char-3);
  letter-spacing: 0.04em;
}
.dsl-clauses {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}
.dsl-clause {
  display: grid;
  grid-template-columns: 140px 80px minmax(0, 1fr) 32px;
  gap: 6px;
  align-items: center;
}
.dsl-clause--prefer {
  grid-template-columns: 140px 80px minmax(0, 1fr) auto 60px 32px;
}
.dsl-clause__field,
.dsl-clause__op,
.dsl-clause__value,
.dsl-clause__weight {
  font-family: var(--mono);
  font-size: 11px;
  border: var(--line);
  background: var(--paper, #fbf6ee);
  padding: 6px 8px;
  color: var(--char);
  min-width: 0;
  box-sizing: border-box;
}
.dsl-clause__value { width: 100%; }
.dsl-clause__weight { width: 100%; }
.dsl-clause__weight-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--char-3);
  letter-spacing: 0.05em;
}
.dsl-clause__del {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  background: transparent;
  border: var(--line);
  color: var(--char);
  width: 26px;
  height: 26px;
  cursor: pointer;
  padding: 0;
}
.dsl-clause__del:hover {
  background: var(--rose);
  color: var(--paper, #fbf6ee);
}
.dsl-clauses:empty + .ghost-button::before {
  content: "no clauses yet — ";
  color: var(--char-3);
  font-weight: 400;
}

/* ─────────────── strategy preview ─────────────── */

.dsl-preview {
  margin-top: 18px;
  border-top: var(--line);
  padding-top: 14px;
}
.dsl-preview__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
  min-height: 24px;
}
.dsl-preview__row {
  display: grid;
  grid-template-columns: 100px 60px 1fr;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
}
.dsl-preview__row--excluded {
  color: var(--char-3);
}
.dsl-preview__row--excluded .dsl-preview__name { text-decoration: line-through; }
.dsl-preview__row--excluded .dsl-preview__score { font-style: italic; }
.dsl-preview__name { font-weight: 700; color: var(--char); }
.dsl-preview__score { color: var(--char-3); text-align: right; }
.dsl-preview__bar {
  height: 8px;
  background: var(--amber);
  border: 1px solid var(--char);
}
.dsl-preview__warnings {
  border: var(--line);
  background: var(--amber-soft);
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--char);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.dsl-preview__warnings[hidden] { display: none; }

/* ─────────────── strategy card body ─────────────── */

.strategy-card__rules {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--char-3);
  letter-spacing: 0.02em;
}
.strategy-card__rule {
  display: block;
}
.strategy-card__rule--require::before {
  content: "REQ ";
  color: var(--rose);
  font-weight: 700;
}
.strategy-card__rule--prefer::before {
  content: "PREF ";
  color: var(--amber);
  font-weight: 700;
}
.strategy-card__rule-empty {
  color: var(--char-3);
  font-style: italic;
}

.setup-reveal-warning {
  border: var(--line);
  padding: 14px 16px;
  background: var(--amber-soft);
}
.setup-reveal-warning strong {
  color: var(--char);
}
#setupRevealedToken {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.5px;
  user-select: all;
}
#setupCopyHint {
  color: var(--char-3) !important;
  margin-top: 8px !important;
}

/* ─────────────── CLIENTS PANEL ─────────────── */

.client-create {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  border: var(--line);
  background: var(--bone-2);
  padding: 22px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-hard-sm);
  flex-wrap: wrap;
}
.client-create .field--inline { flex: 1; min-width: 160px; }

.client-flash {
  border: var(--line-thick);
  background: var(--char);
  color: var(--bone);
  padding: 18px 22px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-hard);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.client-flash[hidden] { display: none; }
.client-flash__title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--amber);
}
.client-flash__key {
  background: var(--char-2);
  border: 1px dashed var(--amber);
  padding: 12px 14px;
  font-size: 13px;
  color: var(--amber-soft);
  word-break: break-all;
  user-select: all;
}
.client-flash__warn { font-size: 11px; color: var(--bone-3); }

.client-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.client-card {
  border: var(--line);
  background: var(--bone-2);
  padding: 18px 20px;
  box-shadow: var(--shadow-hard-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
}
.client-card__name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  font-weight: 600;
}
.client-card__meta {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--char-3);
  display: flex;
  gap: 16px;
}
.client-card__hash {
  font-size: 10px;
  color: var(--char-3);
  word-break: break-all;
  border-top: 1px dashed var(--char-3);
  padding-top: 8px;
}
.client-card .ghost-button { align-self: flex-start; }

.field--check { flex-direction: column; }
.field--check .switch--small { margin-top: 4px; }

.output-stream-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--amber);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ─────────────── ANALYTICS PANEL ─────────────── */

.panel__head-right {
  display: flex;
  gap: 12px;
  align-items: center;
}
.panel__head-right select.ghost-button {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 9px 14px;
  background: var(--bone);
  color: var(--char);
  border: var(--line);
  cursor: pointer;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.kpi-card {
  background: var(--bone-2);
  border: var(--line);
  padding: 18px 22px;
  box-shadow: var(--shadow-hard-sm);
  position: relative;
}
.kpi-card__label {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--char-3);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.kpi-card__value {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: 42px;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--char);
}
.kpi-card__unit {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--char-3);
  margin-left: 4px;
  font-style: normal;
}
.kpi-card__sub {
  font-size: 10px;
  color: var(--char-3);
  margin-top: 8px;
  letter-spacing: 0.1em;
}
.kpi-card__sub b { color: var(--amber); }

.chart-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--bone-2);
  border: var(--line);
  padding: 18px 22px;
  box-shadow: var(--shadow-hard-sm);
  display: flex;
  flex-direction: column;
  min-height: 260px;
}
.chart-card--wide { grid-column: 1 / -1; }
.chart-card__title {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin: 0 0 14px;
  color: var(--char-3);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--char-3);
}
.chart-card__body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-width: 0;
}
.chart-card__body svg { width: 100%; height: 100%; }
.chart-card__empty {
  font-size: 11px;
  color: var(--char-3);
  font-family: var(--mono);
  text-align: center;
}

/* svg primitives */
.svg-bar {
  fill: var(--amber);
  transition: fill .15s;
}
.svg-bar:hover { fill: var(--char); }
.svg-bar--success { fill: var(--moss); }
.svg-bar--error { fill: var(--rose); }
.svg-bar--cyan { fill: var(--cyan); }
.svg-bar--cyan:hover { fill: var(--char); }
.svg-label {
  font-family: var(--mono);
  font-size: 10px;
  fill: var(--char-2);
}
.svg-axis { stroke: var(--char); stroke-width: 1; }
.svg-grid { stroke: var(--char-3); stroke-dasharray: 2 3; stroke-width: 0.7; }
.svg-line { fill: none; stroke: var(--amber); stroke-width: 2; }
.svg-line--success { stroke: var(--moss); }
.svg-area { fill: var(--amber); opacity: 0.15; }

.stack-bar {
  display: flex;
  height: 10px;
  width: 100%;
  border: 1px solid var(--char);
  background: var(--bone);
}
.stack-bar__seg { height: 100%; }

/* ─────────────── STRATEGIES: custom builder ─────────────── */

.strategy-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  gap: 16px;
}
.strategy-toolbar p {
  font-size: 11px;
  color: var(--char-3);
  margin: 0;
  letter-spacing: 0.04em;
}
.strategy-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}
.strategy-card__tag {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 6px;
  border: 1px dashed var(--char-3);
  color: var(--char-2);
}
.strategy-card.is-active .strategy-card__tag {
  border-color: var(--bone-3);
  color: var(--bone-3);
}
.strategy-card__builtin {
  position: absolute;
  top: 6px;
  right: 6px;
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--char-3);
  background: var(--bone);
  border: 1px solid var(--char-3);
  padding: 1px 4px;
}
.strategy-card.is-active .strategy-card__builtin {
  color: var(--bone-3);
  background: var(--char-2);
  border-color: var(--bone-3);
}
.strategy-card__actions {
  display: flex;
  gap: 4px;
  position: absolute;
  bottom: 8px;
  right: 8px;
  opacity: 0;
  transition: opacity .15s;
}
.strategy-card:hover .strategy-card__actions { opacity: 1; }
.strategy-card__actions .mini-btn { padding: 3px 6px; font-size: 9px; }

.model-warning {
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--bone);
  border: 1px dashed var(--amber);
  font-size: 10px;
  color: var(--char-2);
  line-height: 1.5;
}
.model-warning b { color: var(--amber); }
.model-warning__suggestions { margin-top: 4px; color: var(--char-3); }
.model-warning__suggestions span { color: var(--char); cursor: pointer; text-decoration: underline dotted; }

/* ═══════════════ RESPONSIVE ═══════════════ */

/* ─── Tablet landscape & small desktop (≤ 960px) ─── */
@media (max-width: 960px) {
  .masthead {
    grid-template-columns: 1fr;
    padding: 28px 28px 22px;
    gap: 24px;
  }
  .ribbon {
    padding: 0 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .ribbon::-webkit-scrollbar { display: none; }
  .stage  { padding: 36px 28px 60px; }
  .signoff { padding: 22px 28px; }

  .provider-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  .api-cards {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  .chart-row {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
  .dsl-clause {
    grid-template-columns: 120px 70px minmax(0, 1fr) 32px;
  }
  .dsl-clause--prefer {
    grid-template-columns: 120px 70px minmax(0, 1fr) auto 50px 32px;
  }
}

/* ─── Tablet portrait (≤ 768px) ─── */
@media (max-width: 768px) {
  .masthead {
    padding: 22px 20px 18px;
    gap: 18px;
  }
  .masthead__title h1 {
    font-size: clamp(28px, 7vw, 48px);
  }
  .status-block { padding: 10px 10px 10px 12px; }
  .status-block__value { font-size: 11px; }
  .savings-strip { padding: 6px 12px; }
  .savings-strip__amount { font-size: 16px; }

  .ribbon__item {
    padding: 12px 16px 12px 14px;
    gap: 6px;
    font-size: 10px;
    white-space: nowrap;
  }
  .ribbon__index { font-size: 14px; }

  .stage { padding: 28px 20px 48px; }
  .signoff { padding: 18px 20px; }

  .panel__head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .panel__head-right { align-self: flex-start; }

  .provider-grid {
    grid-template-columns: 1fr;
  }
  .strategy-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
  .api-cards {
    grid-template-columns: 1fr;
  }
  .client-list {
    grid-template-columns: 1fr;
  }
  .chart-row {
    grid-template-columns: 1fr;
  }
  .kpi-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .toggle-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .strategy-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .client-create {
    flex-direction: column;
    align-items: stretch;
  }
  .client-create .field--inline { min-width: unset; }

  /* Modals full-width on tablets */
  .modal__card {
    max-width: calc(100% - 32px);
    padding: 24px 22px;
  }
  .modal__card--wide {
    max-width: calc(100% - 32px);
  }
  .modal__card h3 { font-size: 24px; }

  .dsl-clause,
  .dsl-clause--prefer {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .dsl-clause__del {
    grid-column: -1;
    grid-row: 1;
    justify-self: end;
  }
  .dsl-editor-grid {
    grid-template-columns: 1fr;
  }
  .dsl-preview__row {
    grid-template-columns: 80px 50px 1fr;
    gap: 6px;
    font-size: 10px;
  }

  .wizard__links {
    flex-direction: column;
  }

  .signoff {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* ─── Mobile (≤ 640px) ─── */
@media (max-width: 640px) {
  .masthead {
    padding: 18px 16px 16px;
    gap: 14px;
  }
  .masthead__title h1 {
    font-size: clamp(24px, 8vw, 36px);
  }
  .brand-mark { font-size: 22px; }
  .brand-mark__bracket { font-size: 26px; }

  /* ── Mobile ribbon → hamburger + drawer ── */
  .ribbon {
    padding: 0;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 50;
  }
  .ribbon__burger {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    background: transparent;
    border: none;
    border-right: 1px dashed rgba(241,236,225,0.18);
    cursor: pointer;
  }
  .ribbon__burger--open .ribbon__burger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .ribbon__burger--open .ribbon__burger-line:nth-child(2) {
    opacity: 0;
  }
  .ribbon__burger--open .ribbon__burger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
  .ribbon__active-label {
    display: flex;
    align-items: center;
    padding: 0 16px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--amber);
    flex: 1;
  }
  .ribbon__items {
    display: none;
    flex-direction: column;
    width: 100%;
    order: 10;
    border-top: 1px dashed rgba(241,236,225,0.18);
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .ribbon__items--open {
    display: flex;
    max-height: 400px;
  }
  .ribbon__item {
    padding: 14px 20px;
    border-right: none;
    border-bottom: 1px dashed rgba(241,236,225,0.12);
    gap: 12px;
    font-size: 11px;
  }
  .ribbon__item:last-child { border-bottom: none; }
  .ribbon__item--active::after {
    display: none;
  }
  .ribbon__item--active {
    border-left: 3px solid var(--amber);
  }
  .ribbon__index { font-size: 16px; }
  .ribbon__label { display: inline; }
  .ribbon__rule { display: none; }

  .stage { padding: 22px 16px 40px; }

  .panel__title { font-size: clamp(22px, 6vw, 32px); }
  .panel__lede { font-size: 12px; margin-bottom: 24px; }
  .ascii-arrow { font-size: 14px; }

  .provider-card {
    padding: 18px 16px 14px;
  }
  .provider-card__name { font-size: 22px; }
  .provider-card__foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .provider-card__foot-actions {
    align-self: flex-end;
  }

  .strategy-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .strategy-card { padding: 14px 12px; }
  .strategy-card__name { font-size: 18px; }

  .kpi-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .kpi-card { padding: 14px 16px; }
  .kpi-card__value { font-size: 32px; }

  .chart-card { min-height: 200px; padding: 14px 16px; }

  .ghost-button { padding: 7px 10px; font-size: 10px; }
  .ghost-button--small { padding: 5px 8px; font-size: 9px; }
  .primary-button { padding: 10px 16px; font-size: 11px; }
  .mini-btn { padding: 5px 8px; font-size: 9px; }

  .modal__card {
    max-width: calc(100% - 20px);
    padding: 20px 18px;
    max-height: calc(100vh - 24px);
  }
  .modal__card--wide {
    max-width: calc(100% - 20px);
  }
  .modal__card h3 { font-size: 22px; }

  .wizard__steps li { gap: 10px; font-size: 11px; }
  .wizard__step-num { width: 22px; height: 22px; font-size: 10px; }
  .wizard__provider-name { font-size: 18px; }
  .wizard__free-tier { font-size: 10px; }

  .setup-token-row {
    flex-wrap: wrap;
  }
  .setup-token-row input { width: 100%; }

  .signoff {
    padding: 16px;
    font-size: 10px;
  }
  .signoff__line { font-size: 13px; }

  .playground__output { min-height: 260px; }
  .output-meta { font-size: 9px; gap: 8px; }
}

/* ─── Small mobile (≤ 480px) ─── */
@media (max-width: 480px) {
  .masthead__title h1 {
    font-size: 22px;
  }
  .masthead__status {
    grid-template-columns: 1fr;
  }
  .status-block {
    border-right: none;
    border-bottom: 1px dashed var(--char-3);
    padding: 8px 12px;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .status-block:nth-child(3) { border-right: none; border-bottom: 1px dashed var(--char-3); }
  .savings-strip {
    flex-wrap: wrap;
    gap: 4px 12px;
    padding: 8px 12px;
  }
  .savings-strip__amount { font-size: 16px; }

  .ribbon__item {
    padding: 10px 10px;
    gap: 0;
    letter-spacing: 0.06em;
  }
  .ribbon__index { font-size: 12px; }

  .strategy-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr; }

  .provider-card__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .provider-row--meters {
    flex-direction: column;
    gap: 10px;
  }
  .provider-row--limits {
    flex-direction: column;
    gap: 8px;
  }

  .api-card pre {
    font-size: 10px;
    overflow-x: auto;
  }
  .api-card__path { font-size: 11px; word-break: break-all; }

  .dsl-clause,
  .dsl-clause--prefer {
    grid-template-columns: 1fr;
  }
  .dsl-section__head {
    flex-direction: column;
    gap: 4px;
  }

  .client-create {
    padding: 16px;
  }

  .playground__controls {
    flex-direction: column;
    align-items: stretch;
  }
  .playground__controls .field--inline {
    min-width: unset;
  }
}

/* ─── Touch: disable hover transforms on mobile ─── */
@media (hover: none) {
  .provider-card:hover,
  .strategy-card:hover,
  .ghost-button:hover {
    transform: none;
    box-shadow: var(--shadow-hard-sm);
  }
  .strategy-card.is-active {
    transform: none;
  }
}