/* Keyboard Tester - new two-column layout */

.kb-tool .kb-panels {
  margin: 0 -8px;
}
.kb-tool [class*='col-'] {
  padding: 0 8px;
}

.kb-input-panel,
.kb-output-panel {
  height: 100%;
}

.kb-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.kb-panel-header .btn {
  white-space: nowrap;
}

.kb-body {
  display: flex;
  flex-direction: column;
}

/* ---- output side: virtual keyboard ---- */
.kb-keyboard-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
}

.kb-keyboard {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 620px;
  background: var(--bg-subtle, #eef0f3);
  border: 1px solid var(--border-color, #dde1e6);
  border-radius: 10px;
  padding: 10px;
}

.kb-row {
  display: flex;
  gap: 4px;
}

.kb-key {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #ffffff, #f0f1f4);
  border: 1px solid #c9cdd4;
  border-bottom-width: 2px;
  border-radius: 6px;
  color: var(--text-primary, #212529);
  font-size: 12px;
  font-weight: 600;
  cursor: default;
  user-select: none;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.06);
  transition: background 0.12s, border-color 0.12s, transform 0.06s;
}

.kb-key.is-pressed {
  background: #ffc107;
  border-color: #e0a800;
  color: #fff;
}

.kb-key.is-pressing {
  background: #ff9800 !important;
  border-color: #ed8b00 !important;
  color: #fff;
  transform: translateY(1px);
}

.kb-key-sub {
  position: absolute;
  top: 4px;
  left: 6px;
  font-size: 9px;
  font-weight: 400;
  line-height: 1;
  opacity: 0.75;
}

.kb-key-main {
  font-size: 12px;
  line-height: 1.1;
}

.kb-key-single {
  font-size: 11.5px;
}

/* width modifiers (relative to a 32px unit) */
.kb-w-125 { flex-grow: 1.25; }
.kb-w-150 { flex-grow: 1.5; }
.kb-w-175 { flex-grow: 1.75; }
.kb-w-200 { flex-grow: 2; }
.kb-w-225 { flex-grow: 2.25; }
.kb-w-275 { flex-grow: 2.75; }
.kb-w-625 { flex-grow: 6.25; }

.kb-numlock {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-secondary, #5f6b7a);
}

.kb-numlock i {
  color: var(--brand-color, #2f6fed);
}

/* ---- input side: stats ---- */
.kb-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 220px;
  border: 1px dashed var(--border-color, #dde1e6);
  border-radius: 8px;
  color: var(--text-secondary, #5f6b7a);
  text-align: center;
  padding: 20px;
}

.kb-empty i {
  font-size: 40px;
  opacity: 0.45;
}

.kb-empty p {
  margin: 0;
  font-size: 13px;
  max-width: 320px;
  line-height: 1.6;
}

.kb-empty.hidden {
  display: none;
}

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

.kb-result.hidden {
  display: none;
}

.kb-hero {
  display: flex;
  align-items: stretch;
  gap: 14px;
  background: linear-gradient(135deg, #2563eb, #f97316);
  border-radius: 10px;
  color: #fff;
  padding: 16px 20px;
}

.kb-hero-item {
  flex: 1;
  text-align: center;
}

.kb-hero-value {
  display: block;
  font-size: 34px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.5px;
  font-family: Consolas, Menlo, monospace;
}

.kb-hero-label {
  display: block;
  font-size: 12px;
  opacity: 0.88;
  margin-top: 4px;
}

.kb-hero-divider {
  width: 1px;
  background: rgba(255, 255, 255, 0.35);
}

.kb-section {
  border: 1px solid var(--border-color, #e3e6ea);
  border-radius: 8px;
  padding: 12px 14px;
}

.kb-section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-secondary, #5f6b7a);
  margin-bottom: 8px;
}

.kb-formula-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 5px 0;
  font-size: 13px;
}

.kb-formula-label {
  color: var(--text-secondary, #5f6b7a);
}

.kb-formula-val {
  font-family: Consolas, Menlo, monospace;
  font-weight: 600;
  color: var(--text-primary, #212529);
  text-align: right;
  word-break: break-all;
}

.kb-key-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 26px;
}

.kb-key-list-empty {
  font-size: 12.5px;
  color: var(--text-secondary, #5f6b7a);
  font-style: italic;
}

.kb-key-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-color, #dde1e6);
  background: var(--panel-bg, #fff);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
}

.kb-key-chip-name {
  font-weight: 600;
  color: var(--text-primary, #212529);
  font-family: Consolas, Menlo, monospace;
}

.kb-key-chip-count {
  color: var(--brand-color, #2f6fed);
  font-size: 11px;
  font-weight: 700;
}

.kb-tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  border: 1px solid rgba(217, 119, 6, 0.4);
  background: rgba(255, 251, 235, 0.55);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  color: #92400e;
  line-height: 1.55;
}

.kb-tip i {
  margin-top: 2px;
}

.kb-tip p {
  margin: 0 0 6px 0;
}

.kb-tip p:last-child {
  margin-bottom: 0;
}

.kb-result .result-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.kb-meta-stack {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
}

.kb-output-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.kb-note {
  margin-top: 14px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary, #5f6b7a);
  line-height: 1.6;
  background: var(--bg-subtle, #f8f9fa);
  border: 1px solid var(--border-color, #e3e6ea);
  border-radius: 8px;
  padding: 10px 12px;
}

.kb-note i {
  margin-top: 2px;
}

.kb-message {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  line-height: 1.5;
  border-radius: 8px;
  padding: 10px 12px;
  margin-top: 16px;
  transition: opacity 0.25s ease;
}

.kb-message.is-fading {
  opacity: 0;
}

.kb-message.hidden {
  display: none;
}

.kb-msg-error {
  background: rgba(220, 53, 69, 0.08);
  border: 1px solid rgba(220, 53, 69, 0.35);
  color: #c0392b;
}

.kb-msg-success {
  background: rgba(40, 167, 69, 0.08);
  border: 1px solid rgba(40, 167, 69, 0.35);
  color: #1e7e34;
}

.kb-msg-info {
  background: rgba(47, 111, 237, 0.08);
  border: 1px solid rgba(47, 111, 237, 0.35);
  color: #2f6fed;
}

[data-theme='dark'] .kb-msg-success {
  background: rgba(40, 167, 69, 0.14);
  color: #7ddc95;
}

[data-theme='dark'] .kb-msg-error {
  background: rgba(220, 53, 69, 0.14);
  color: #f19aa0;
}

[data-theme='dark'] .kb-msg-info {
  background: rgba(47, 111, 237, 0.14);
  color: #9dbcf7;
}

/* ---- responsive ---- */
@media (max-width: 991px) {
  .kb-panels [class*='col-'] {
    margin-bottom: 16px;
  }
}

@media (max-width: 575px) {
  .kb-hero {
    padding: 14px 12px;
    gap: 8px;
  }
  .kb-hero-value {
    font-size: 26px;
  }
  .kb-result .result-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .kb-output-actions .btn {
    flex: 1;
  }
}

/* dark mode tweaks */
[data-theme='dark'] .kb-section {
  background: var(--panel-bg, #1e2430);
}

[data-theme='dark'] .kb-keyboard {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme='dark'] .kb-key {
  background: linear-gradient(180deg, #2a3140, #232936);
  border-color: #3a4252;
  color: #e8ecf2;
}

[data-theme='dark'] .kb-tip {
  background: rgba(180, 83, 9, 0.12);
  border-color: rgba(217, 119, 6, 0.45);
  color: #fbbf77;
}

[data-theme='dark'] .kb-key-chip {
  background: var(--panel-bg, #1e2430);
}