/* ================================================================
   DESIGN TOKENS — Single source of truth for all visual values
   ================================================================ */
:root {
  /* Backgrounds */
  --bg-base:     #07080d;
  --bg-surface:  #0d1018;
  --bg-elevated: #131721;
  --bg-input:    #0a0c12;
  --bg-hover:    rgba(255,255,255,0.04);

  /* Borders */
  --bd-subtle:   rgba(255,255,255,0.05);
  --bd-default:  rgba(255,255,255,0.09);
  --bd-strong:   rgba(255,255,255,0.18);
  --bd-focus:    rgba(59,130,246,0.5);

  /* Text */
  --tx-primary:   #dde4f0;
  --tx-secondary: #5d6a87;
  --tx-muted:     #2e3650;

  /* Brand / Accent */
  --blue:         #3b82f6;
  --blue-glow:    rgba(59,130,246,0.18);
  --blue-dim:     rgba(59,130,246,0.07);

  /* Warning spectrum */
  --orange:       #f97316;
  --orange-glow:  rgba(249,115,22,0.15);
  --orange-dim:   rgba(249,115,22,0.06);
  --amber:        #f59e0b;
  --amber-glow:   rgba(245,158,11,0.14);
  --red:          #ef4444;
  --red-glow:     rgba(239,68,68,0.18);
  --red-dim:      rgba(239,68,68,0.07);

  /* Success */
  --green:        #22c55e;
  --green-glow:   rgba(34,197,94,0.14);

  /* Typography */
  --font-display: 'Syncopate', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --font-body:    'Figtree', sans-serif;

  /* Radii */
  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  16px;
  --r-xl:  20px;
  --r-2xl: 26px;

  /* Shadows */
  --shadow-card:     0 1px 2px rgba(0,0,0,0.5), 0 4px 20px rgba(0,0,0,0.3);
  --shadow-elevated: 0 2px 8px rgba(0,0,0,0.6), 0 20px 60px rgba(0,0,0,0.4);

  /* Animation */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
}

/* ================================================================
   RESET
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--tx-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── Ambient background atmosphere ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 15% 10%, rgba(59,130,246,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 90%, rgba(239,68,68,0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ================================================================
   WRAPPER
   ================================================================ */
#app {
  position: relative;
  z-index: 1;
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 28px 80px;
}

/* ================================================================
   HEADER
   ================================================================ */
header {
  padding: 44px 0 36px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--bd-subtle);
  animation: fadeUp 0.5s var(--ease-out) both;
}

.header-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-dim);
  border: 1px solid rgba(59,130,246,0.18);
  padding: 4px 11px;
  border-radius: 4px;
  margin-bottom: 18px;
}

.header-eyebrow .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--blue);
  animation: blink 2.4s ease-in-out infinite;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 12px;
  background: linear-gradient(140deg, var(--tx-primary) 30%, var(--tx-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 14px;
  color: var(--tx-secondary);
  font-weight: 300;
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 22px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: var(--r-md);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 150ms ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
  -webkit-user-select: none;
  user-select: none;
}

.btn svg { width: 14px; height: 14px; flex-shrink: 0; }

.btn-primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.btn-primary:hover {
  background: #2563eb;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59,130,246,0.4);
}

.btn-ghost {
  background: var(--bg-elevated);
  color: var(--tx-secondary);
  border-color: var(--bd-default);
}
.btn-ghost:hover {
  color: var(--tx-primary);
  border-color: var(--bd-strong);
  background: var(--bg-hover);
}

.btn-danger-ghost {
  background: var(--red-dim);
  color: var(--red);
  border-color: rgba(239,68,68,0.2);
}
.btn-danger-ghost:hover {
  background: rgba(239,68,68,0.12);
  border-color: rgba(239,68,68,0.35);
}

.btn:active { transform: translateY(0) !important; }

/* ================================================================
   INSTALL BANNER
   ================================================================ */
#installBanner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--blue-dim);
  border: 1px solid rgba(59,130,246,0.18);
  border-radius: var(--r-lg);
  padding: 13px 18px;
  margin-bottom: 28px;
  animation: fadeUp 0.4s var(--ease-out) both;
}
#installBanner.hidden { display: none; }

.install-icon { color: var(--blue); flex-shrink: 0; }

.install-text {
  flex: 1;
  font-size: 13px;
  color: var(--tx-secondary);
}
.install-text strong { color: var(--tx-primary); }

/* ================================================================
   MAIN LAYOUT
   ================================================================ */
.main-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 22px;
  align-items: start;
}

@media (max-width: 980px) {
  .main-grid { grid-template-columns: 1fr; }
}

/* ================================================================
   CARDS
   ================================================================ */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-2xl);
  padding: 26px;
  box-shadow: var(--shadow-card);
  transition: border-color 250ms ease;
}
.card:hover { border-color: var(--bd-default); }

.card-section-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tx-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--bd-subtle);
}

/* ================================================================
   INPUT FORM
   ================================================================ */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 500px) {
  .form-row { grid-template-columns: 1fr; }
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.input-group label {
  font-size: 11px;
  font-weight: 600;
  color: var(--tx-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.input-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

.input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.input-adorn {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--tx-muted);
  pointer-events: none;
  z-index: 1;
}
.input-adorn.left  { left: 12px; }
.input-adorn.right { right: 12px; }

input[type="number"] {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-md);
  color: var(--tx-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  padding: 10px 36px 10px 12px;
  transition: border-color 130ms ease, background 130ms ease, box-shadow 130ms ease;
  outline: none;
  -moz-appearance: textfield;
}

input[type="number"].has-left-adorn { padding-left: 26px; }

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }

input[type="number"]:hover:not(:focus) { border-color: var(--bd-default); }

input[type="number"]:focus {
  border-color: var(--bd-focus);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px var(--blue-dim);
}

.input-hint {
  font-size: 10px;
  color: var(--tx-muted);
  font-style: italic;
  line-height: 1.5;
}

.form-sep {
  height: 1px;
  background: var(--bd-subtle);
}

/* Unit toggle pills */
.unit-pills {
  display: flex;
  gap: 3px;
  padding: 3px;
  background: var(--bg-input);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.unit-pill {
  padding: 3px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: none;
  color: var(--tx-muted);
  background: transparent;
  transition: all 130ms ease;
}

.unit-pill.active {
  background: var(--bg-elevated);
  color: var(--tx-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* ================================================================
   RESULTS PANEL
   ================================================================ */
.results-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Metrics grid ── */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 560px) {
  .metrics-grid { grid-template-columns: 1fr; }
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-xl);
  padding: 20px 22px;
  box-shadow: var(--shadow-card);
  transition: transform 200ms var(--ease-out), border-color 200ms ease, box-shadow 200ms ease;
  position: relative;
  overflow: hidden;
}

.metric-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--stripe-color, transparent);
  transition: opacity 300ms ease;
  opacity: 0;
}

.metric-card.lit::after { opacity: 1; }

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--bd-default);
}

/* Color variants */
.metric-card.c-neutral { --stripe-color: var(--tx-secondary); }
.metric-card.c-blue    { --stripe-color: var(--blue); }
.metric-card.c-amber   { --stripe-color: var(--amber); }
.metric-card.c-orange  { --stripe-color: var(--orange); }
.metric-card.c-red     { --stripe-color: var(--red); }

.metric-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--tx-muted);
  margin-bottom: 10px;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--tx-primary);
  transition: color 250ms ease;
}

/* Dynamic number color by card type */
.metric-card.c-amber  .metric-value { color: var(--amber); }
.metric-card.c-orange .metric-value { color: var(--orange); }
.metric-card.c-red    .metric-value { color: var(--red); }

.metric-sub {
  font-size: 10px;
  color: var(--tx-muted);
  margin-top: 7px;
  line-height: 1.5;
}

/* ── True Cost: full-width hero card ── */
.metric-card.true-cost {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(239,68,68,0.06) 0%, rgba(249,115,22,0.04) 60%, transparent 100%);
  border-color: rgba(239,68,68,0.2);
  padding: 24px 26px;
}

.metric-card.true-cost .metric-value {
  font-size: clamp(28px, 4.5vw, 44px);
  color: var(--red);
}

/* Glow pulse when true cost is high */
@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--shadow-card), 0 0 0 0 var(--red-glow); }
  50%       { box-shadow: var(--shadow-card), 0 0 24px 4px rgba(239,68,68,0.12); }
}
.metric-card.true-cost.pulsing { animation: glow-pulse 2.5s ease-in-out infinite; }

.true-cost-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(239,68,68,0.12);
}

.bd-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--tx-secondary);
}

.bd-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.bd-val {
  color: var(--tx-primary);
  margin-left: 2px;
}

/* ── Number update animation ── */
@keyframes num-pop {
  0%   { opacity: 0.4; transform: translateY(5px) scale(0.97); }
  100% { opacity: 1;   transform: translateY(0)   scale(1); }
}

.metric-value.updated {
  animation: num-pop 0.28s var(--ease-out) both;
}

/* ================================================================
   CHART SECTION
   ================================================================ */
.chart-card {
  background: var(--bg-surface);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-2xl);
  padding: 24px 26px;
  box-shadow: var(--shadow-card);
}

.chart-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 22px;
}

.chart-title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--tx-secondary);
}

.deviation-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  transition: all 300ms ease;
}
.deviation-pill.none   { background: var(--bg-elevated); color: var(--tx-muted); border: 1px solid var(--bd-subtle); }
.deviation-pill.low    { background: var(--amber-glow);  color: var(--amber);    border: 1px solid rgba(245,158,11,0.2); }
.deviation-pill.high   { background: var(--orange-glow); color: var(--orange);   border: 1px solid rgba(249,115,22,0.2); }
.deviation-pill.severe { background: var(--red-glow);    color: var(--red);      border: 1px solid rgba(239,68,68,0.2); }

.bar-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.bar-item-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 7px;
}

.bar-item-label {
  font-size: 11px;
  color: var(--tx-secondary);
  font-weight: 500;
}

.bar-item-value {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--tx-primary);
}

.bar-track {
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 4px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.7s var(--ease-out);
  min-width: 0;
}

.bar-fill.f-budget { background: linear-gradient(90deg, #3b82f6, rgba(59,130,246,0.4)); }
.bar-fill.f-loss   { background: linear-gradient(90deg, #f97316, rgba(249,115,22,0.4)); }
.bar-fill.f-true   { background: linear-gradient(90deg, #ef4444, #f97316); }

/* ── SVG mini chart: budget vs true ── */
.svg-chart-wrap {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--bd-subtle);
}

.svg-chart-title {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--tx-muted);
  margin-bottom: 12px;
}

svg.mini-chart text {
  font-family: 'JetBrains Mono', monospace;
}

/* ================================================================
   REPORT MODAL
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--bd-default);
  border-radius: var(--r-2xl);
  width: 100%;
  max-width: 580px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-elevated);
  transform: translateY(24px) scale(0.98);
  transition: transform 250ms var(--ease-out);
  overflow: hidden;
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--bd-subtle);
}

.modal-head-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
}

.modal-close {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-sm);
  color: var(--tx-secondary);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: all 130ms ease;
}
.modal-close:hover { color: var(--tx-primary); border-color: var(--bd-strong); }

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 22px;
}

.report-ta {
  width: 100%;
  height: 340px;
  background: var(--bg-input);
  border: 1px solid var(--bd-subtle);
  border-radius: var(--r-md);
  color: var(--tx-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  padding: 14px;
  resize: none;
  outline: none;
  tab-size: 2;
}

.modal-foot {
  padding: 14px 22px;
  border-top: 1px solid var(--bd-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
}

.copy-ok {
  font-size: 11px;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-right: auto;
  opacity: 0;
  transition: opacity 200ms ease;
}
.copy-ok.show { opacity: 1; }

/* ================================================================
   TOAST
   ================================================================ */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(64px);
  background: var(--bg-elevated);
  border: 1px solid var(--bd-default);
  border-radius: var(--r-lg);
  padding: 11px 18px;
  font-size: 13px;
  color: var(--tx-primary);
  box-shadow: var(--shadow-elevated);
  transition: transform 0.35s var(--ease-spring);
  z-index: 300;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
#toast.show { transform: translateX(-50%) translateY(0); }

/* ================================================================
   FOOTER
   ================================================================ */
footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--bd-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--tx-muted);
  letter-spacing: 0.05em;
}

.footer-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--tx-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--bd-subtle);
  border-radius: 4px;
  padding: 2px 8px;
}

.footer-link {
  color: var(--tx-muted);
  text-decoration: none;
  transition: color 150ms ease;
}
.footer-link:hover { color: var(--tx-secondary); }

.doc-link {
  color: var(--blue);
  text-decoration: none;
  transition: color 150ms ease;
}
.doc-link:hover { color: #2563eb; }

.doc-header .header-eyebrow { margin-top: 18px; }

/* ================================================================
   GLOBAL ANIMATIONS
   ================================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.card          { animation: fadeUp 0.45s var(--ease-out) 0.05s both; }
.results-panel { animation: fadeUp 0.45s var(--ease-out) 0.1s both; }

/* ================================================================
   SCROLLBAR
   ================================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bd-default); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--bd-strong); }

/* ================================================================
   MOBILE TWEAKS
   ================================================================ */
@media (max-width: 768px) {
  #app { padding: 0 16px 60px; }
  header { padding: 30px 0 26px; margin-bottom: 26px; }
  .card, .chart-card { padding: 20px; border-radius: var(--r-xl); }
  .main-grid { gap: 16px; }
}

@media (max-width: 480px) {
  h1 { letter-spacing: -0.03em; }
  .header-actions .btn { font-size: 12px; padding: 9px 14px; }
}