/* ===== RAFTER RULER PRO CALCULATOR ===== */

:root {
  --rr-bg: #0d0d0d;
  --rr-panel: #141414;
  --rr-border: rgba(255, 255, 255, 0.06);
  --rr-text: #e8e8e8;
  --rr-muted: #888888;
  --rr-accent: #ff6b00;
  --rr-accent-dim: rgba(255, 107, 0, 0.15);
  --rr-accent-border: rgba(255, 107, 0, 0.35);
  --rr-btn-active: #ff6b00;
  --rr-btn-text: #0d0d0d;
  --rr-lcd-bg: #0a0a0a;
  --rr-lcd-green: #00ff66;
  --rr-lcd-dim: rgba(0, 255, 102, 0.08);
}

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

body {
  background: var(--rr-bg);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 3rem;
  color: var(--rr-text);
}

/* Mode toggle top row */
.mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}

.mode-btn {
  padding: 0.45rem 1.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 2px solid var(--rr-border);
  background: var(--rr-panel);
  color: var(--rr-muted);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s ease;
  font-family: inherit;
}

.mode-btn:hover {
  border-color: var(--rr-accent-border);
  color: var(--rr-text);
}

.mode-btn.active {
  background: var(--rr-btn-active);
  border-color: var(--rr-btn-active);
  color: var(--rr-btn-text);
}

/* Tape ruler outer body */
.rr-body {
  width: 100%;
  max-width: 420px;
  background: var(--rr-panel);
  border: 1px solid var(--rr-border);
  border-radius: 12px;
  padding: 1.75rem 1.75rem 2rem;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.03),
    0 20px 60px rgba(0,0,0,0.6);
}

/* CLAUSE TOOLS brand header */
.rr-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rr-border);
}

.rr-brand-name {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rr-text);
}

.rr-brand-model {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rr-muted);
}

/* Mode badge */
.rr-mode-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--rr-accent);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--rr-accent);
  letter-spacing: 0.05em;
  font-family: 'Courier New', Courier, monospace;
  flex-shrink: 0;
}

.rr-mode-badge--r { border-color: #00ccff; color: #00ccff; }
.rr-mode-badge--v { border-color: var(--rr-accent); color: var(--rr-accent); }
.rr-mode-badge--h { border-color: #ffcc00; color: #ffcc00; }

/* LCD display */
.rr-lcd {
  background: var(--rr-lcd-bg);
  border: 1px solid rgba(0, 255, 102, 0.12);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 8px rgba(0,0,0,0.5);
}

.rr-lcd::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 255, 102, 0.015) 3px,
    rgba(0, 255, 102, 0.015) 4px
  );
  pointer-events: none;
}

.rr-lcd-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(0, 255, 102, 0.4);
  margin-bottom: 0.6rem;
}

.rr-lcd-value {
  font-family: 'Courier New', Courier, monospace;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--rr-lcd-green);
  letter-spacing: 0.04em;
  line-height: 1;
  text-shadow: 0 0 12px rgba(0, 255, 102, 0.5);
}

.rr-lcd-unit {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(0, 255, 102, 0.5);
  margin-left: 0.5rem;
  letter-spacing: 0.1em;
}

.rr-lcd-sub {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(0, 255, 102, 0.08);
}

.rr-lcd-sub-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.rr-lcd-sub-label {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(0, 255, 102, 0.35);
}

.rr-lcd-sub-value {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: rgba(0, 255, 102, 0.7);
  letter-spacing: 0.05em;
}

/* Input fields */
.rr-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.rr-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.rr-input-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rr-muted);
}

.rr-input {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: var(--rr-lcd-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  color: var(--rr-text);
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Courier New', Courier, monospace;
  outline: none;
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}

.rr-input::-webkit-outer-spin-button,
.rr-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.rr-input:focus { border-color: var(--rr-accent-border); }
.rr-input::placeholder { color: rgba(255,255,255,0.2); font-weight: 400; }

.rr-input-suffix {
  font-size: 0.72rem;
  color: var(--rr-muted);
  margin-top: 0.15rem;
  letter-spacing: 0.05em;
}

/* Calculate button */
.rr-calc-btn {
  width: 100%;
  padding: 0.85rem;
  background: var(--rr-accent);
  color: var(--rr-btn-text);
  border: none;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
  margin-bottom: 1.5rem;
}

.rr-calc-btn:hover { background: #ff8533; }
.rr-calc-btn:active { background: #e06000; }

/* Results section */
.rr-results {
  border-top: 1px solid var(--rr-border);
  padding-top: 1.25rem;
}

.rr-results-title {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--rr-muted);
  margin-bottom: 0.85rem;
}

.rr-results-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.rr-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.75rem;
  background: rgba(255,255,255,0.025);
  border-radius: 3px;
  border: 1px solid transparent;
}

.rr-result-row--primary {
  border-color: var(--rr-accent-border);
  background: var(--rr-accent-dim);
}

.rr-result-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--rr-muted);
  text-transform: uppercase;
}

.rr-result-value {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--rr-text);
  letter-spacing: 0.04em;
}

.rr-result-row--primary .rr-result-value { color: var(--rr-accent); }

/* Pitch indicator bar */
.rr-pitch-bar {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rr-border);
}

.rr-pitch-bar-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rr-muted);
  margin-bottom: 0.5rem;
}

.rr-pitch-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}

.rr-pitch-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--rr-accent), #ffcc00);
  border-radius: 3px;
  transition: width 0.3s ease;
  min-width: 4px;
}

.rr-pitch-readout {
  display: flex;
  justify-content: space-between;
  margin-top: 0.35rem;
  font-size: 0.6rem;
  color: var(--rr-muted);
  letter-spacing: 0.05em;
}

/* Footer */
.rr-footer {
  margin-top: 1.75rem;
  text-align: center;
}

.rr-footer-tag {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.15);
}

/* Reference image hint */
.rr-ref-hint {
  margin-top: 2rem;
  text-align: center;
}

.rr-ref-hint a {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.2);
  text-decoration: none;
  transition: color 0.2s;
}

.rr-ref-hint a:hover { color: var(--rr-accent); }

/* Responsive */
@media (max-width: 480px) {
  .rr-body { padding: 1.25rem 1.25rem 1.5rem; border-radius: 8px; }
  .rr-lcd-value { font-size: 1.8rem; }
  .rr-calc-btn { font-size: 0.75rem; }
}