/* ==========================================================
   BINARY DECIMAL CONVERTER
   Extracted from calculator-tools.css (lines 4481-4974)
   ========================================================== */
/* ----------------------------------------------------------
   BINARY DECIMAL CONVERTER — PREMIUM STYLES
   FULLY RESPONSIVE — verified at all breakpoints
   ---------------------------------------------------------- */

/* ===== MODE SELECTOR ===== */
.ct-bin-modes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: var(--ct-sp-xl);
}

.ct-bin-mode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 6px 12px;
  background: var(--ct-input-bg);
  border: 2px solid var(--ct-input-border);
  border-radius: var(--ct-r-lg);
  cursor: pointer;
  transition: all .3s cubic-bezier(.4,0,.2,1);
  font-family: var(--ct-font);
  user-select: none;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ct-bin-mode::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,.07), rgba(16,185,129,.05));
  opacity: 0;
  transition: opacity .3s ease;
}

.ct-bin-mode:hover {
  border-color: var(--ct-primary-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 22px rgba(99,102,241,.12);
}

.ct-bin-mode:hover::before { opacity: 1; }

.ct-bin-mode-active,
.ct-bin-mode-active:hover {
  border-color: var(--ct-primary) !important;
  background: rgba(99,102,241,.04) !important;
  box-shadow: 0 6px 24px var(--ct-primary-glow) !important;
  transform: translateY(-3px) !important;
}

.ct-bin-mode-active::before { opacity: 1 !important; }

.ct-bin-mode-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(99,102,241,.08), rgba(99,102,241,.04));
  font-size: 18px;
  position: relative;
  z-index: 1;
  transition: all .3s ease;
}

.ct-bin-mode-active .ct-bin-mode-icon {
  background: linear-gradient(135deg, var(--ct-primary), var(--ct-primary-hover));
  box-shadow: 0 4px 12px var(--ct-primary-glow);
}

.ct-bin-mode-name {
  font-size: 11px;
  font-weight: 700;
  color: var(--ct-text-secondary);
  position: relative;
  z-index: 1;
}

.ct-bin-mode-active .ct-bin-mode-name {
  color: var(--ct-primary);
  font-weight: 800;
}

/* ===== PANELS ===== */
.ct-bin-panel { display: none; }
.ct-bin-panel-active { display: block; animation: ctFadeUp .3s var(--ct-ease); }

.ct-bin-panel-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(99,102,241,.06), rgba(16,185,129,.03));
  border: 1px solid rgba(99,102,241,.12);
  border-left: 4px solid var(--ct-primary);
  border-radius: var(--ct-r-md);
  margin-bottom: var(--ct-sp-lg);
  box-shadow: 0 4px 14px rgba(99,102,241,.05);
}

.ct-bin-panel-head span:first-child { font-size: 28px; flex-shrink: 0; }
.ct-bin-panel-head strong { display: block; font-size: 15px; color: var(--ct-text); }
.ct-bin-panel-head small { display: block; font-size: 12px; color: var(--ct-text-secondary); margin-top: 2px; }

/* ===== MONO INPUT ===== */
.ct-bin-mono-input {
  font-family: 'Courier New', Consolas, monospace !important;
  font-size: 18px !important;
  font-weight: 700 !important;
  letter-spacing: 1px !important;
}

/* ===== HINT BAR ===== */
.ct-bin-hint {
  padding: 8px 14px;
  background: rgba(99,102,241,.05);
  border: 1px solid rgba(99,102,241,.1);
  border-radius: var(--ct-r-sm);
  font-size: 12px;
  font-weight: 600;
  color: var(--ct-text-secondary);
  margin-top: var(--ct-sp-sm);
}

/* ===== OPERATION BUTTONS ===== */
.ct-bin-op-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.ct-bin-op-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--ct-font);
  color: var(--ct-text-secondary);
  background: var(--ct-input-bg);
  border: 2px solid var(--ct-input-border);
  border-radius: var(--ct-r-sm);
  cursor: pointer;
  transition: all .25s ease;
}

.ct-bin-op-btn:hover {
  border-color: var(--ct-primary-light);
  color: var(--ct-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(99,102,241,.1);
}

.ct-bin-op-active,
.ct-bin-op-active:hover {
  background: linear-gradient(135deg, var(--ct-primary), var(--ct-primary-hover)) !important;
  color: #fff !important;
  border-color: var(--ct-primary) !important;
  box-shadow: 0 4px 14px var(--ct-primary-glow) !important;
  transform: translateY(-2px) !important;
}

/* ===== ANSWER DISPLAY ===== */
.ct-bin-answer {
  text-align: center;
  padding: 20px var(--ct-sp-md);
  word-break: break-word;
  overflow-wrap: break-word;
  background: linear-gradient(180deg, rgba(99,102,241,.03), transparent);
  border-radius: var(--ct-r-lg);
  margin-bottom: var(--ct-sp-md);
}

.ct-bin-answer:empty { display: none; }

.ct-bin-answer-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--ct-text-muted);
  margin-bottom: 10px;
  padding: 4px 16px;
  background: rgba(0,0,0,.03);
  border-radius: 20px;
}

.ct-bin-answer-value {
  display: block;
  font-size: clamp(18px, 3.5vw, 26px);
  font-weight: 900;
  line-height: 1.2;
  font-family: 'Courier New', Consolas, monospace;
  color: var(--ct-primary);
  word-break: break-all;
  overflow-wrap: break-word;
}

.ct-bin-answer-sub {
  display: block;
  font-size: clamp(13px, 2.5vw, 16px);
  font-weight: 600;
  color: var(--ct-text-secondary);
  margin-top: 8px;
  word-break: break-word;
}

/* ===== CONVERSION CARDS ===== */
.ct-bin-conv-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: var(--ct-sp-lg);
}

.ct-bin-conv-card {
  padding: 16px 14px;
  background: var(--ct-card-bg);
  border: 2px solid var(--ct-input-border);
  border-radius: var(--ct-r-md);
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  word-break: break-all;
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.ct-bin-conv-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,.07);
  border-color: var(--ct-primary-light);
}

.ct-bin-conv-card-active {
  border-color: var(--ct-primary) !important;
  background: rgba(99,102,241,.04) !important;
}

.ct-bin-conv-card-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--ct-text-muted);
  margin-bottom: 6px;
  padding: 2px 10px;
  background: rgba(0,0,0,.04);
  border-radius: 10px;
}

.ct-bin-conv-card-active .ct-bin-conv-card-tag {
  background: rgba(99,102,241,.1);
  color: var(--ct-primary);
}

.ct-bin-conv-card-val {
  display: block;
  font-size: clamp(16px, 3.5vw, 22px);
  font-weight: 800;
  font-family: 'Courier New', Consolas, monospace;
  color: var(--ct-text);
  line-height: 1.3;
  word-break: break-all;
  overflow-wrap: break-word;
  margin-bottom: 4px;
}

.ct-bin-conv-card-active .ct-bin-conv-card-val {
  color: var(--ct-primary);
}

.ct-bin-conv-card-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--ct-text-muted);
}

/* Copy hint */
.ct-bin-conv-card::after {
  content: 'Click to copy';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  color: var(--ct-text-muted);
  opacity: 0;
  transition: opacity .2s ease;
  white-space: nowrap;
}

.ct-bin-conv-card:hover::after {
  opacity: 1;
}

/* ===== BIT VISUALIZATION ===== */
.ct-bin-bits-wrap {
  margin: var(--ct-sp-lg) 0;
  padding: var(--ct-sp-lg);
  background: var(--ct-input-bg);
  border: 1px solid var(--ct-input-border);
  border-radius: var(--ct-r-md);
}

.ct-bin-bits-wrap[hidden] { display: none; }

.ct-bin-bits {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  justify-content: center;
  margin-bottom: 10px;
}

.ct-bin-bit {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  font-family: 'Courier New', monospace;
  border-radius: 6px;
  border: 2px solid var(--ct-input-border);
  transition: all .2s ease;
  flex-shrink: 0;
}

.ct-bin-bit-1 {
  background: linear-gradient(135deg, var(--ct-primary), var(--ct-primary-hover));
  color: #fff;
  border-color: var(--ct-primary);
  box-shadow: 0 2px 8px var(--ct-primary-glow);
}

.ct-bin-bit-0 {
  background: var(--ct-input-bg);
  color: var(--ct-text-muted);
  border-color: var(--ct-input-border);
}

.ct-bin-bit-sep {
  width: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--ct-text-muted);
  flex-shrink: 0;
}

.ct-bin-bits-info {
  text-align: center;
  font-size: clamp(11px, 2vw, 13px);
  font-weight: 600;
  color: var(--ct-text-secondary);
  word-break: break-word;
}

/* ===== STEP NUMBERS ===== */
.ct-bin-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ct-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
  margin-right: 6px;
}

/* ===== RESULT OVERRIDES ===== */
.ct-tool-section[data-tool="binary"] .ct-result-value {
  font-size: clamp(14px, 2.8vw, 20px);
  word-break: break-all;
  overflow-wrap: break-word;
  line-height: 1.2;
  max-width: 100%;
}

.ct-tool-section[data-tool="binary"] .ct-result-summary {
  word-break: break-word;
  overflow-wrap: break-word;
  font-size: clamp(12px, 2.5vw, 15px);
  line-height: 1.7;
}

.ct-tool-section[data-tool="binary"] .ct-detail-val {
  word-break: break-all;
  overflow-wrap: break-word;
  font-family: 'Courier New', monospace;
  font-weight: 700;
}

/* ===== RESPONSIVE: 768px ===== */
@media (max-width: 768px) {
  .ct-bin-modes {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .ct-bin-mode { padding: 10px 4px 8px; gap: 5px; }
  .ct-bin-mode-icon { width: 34px; height: 34px; font-size: 15px; }
  .ct-bin-mode-name { font-size: 10px; }

  .ct-bin-mono-input { font-size: 15px !important; }

  .ct-bin-panel-head { padding: 12px 14px; gap: 10px; }
  .ct-bin-panel-head span:first-child { font-size: 22px; }
  .ct-bin-panel-head strong { font-size: 14px; }

  .ct-bin-conv-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .ct-bin-bit { width: 30px; height: 30px; font-size: 14px; }

  .ct-bin-op-btn { padding: 7px 12px; font-size: 12px; }

  .ct-tool-section[data-tool="binary"] .ct-detail-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .ct-tool-section[data-tool="binary"] .ct-detail-val {
    text-align: left;
    padding-left: 28px;
  }

  .ct-bin-bits-wrap { padding: var(--ct-sp-md); }
}

/* ===== RESPONSIVE: 480px ===== */
@media (max-width: 480px) {
  .ct-bin-modes {
    grid-template-columns: repeat(2, 1fr);
    gap: 5px;
  }

  .ct-bin-mode { padding: 8px 3px 6px; gap: 4px; }
  .ct-bin-mode-icon { width: 28px; height: 28px; font-size: 13px; border-radius: 8px; }
  .ct-bin-mode-name { font-size: 9px; }

  .ct-bin-mono-input { font-size: 14px !important; letter-spacing: .5px !important; }

  .ct-bin-conv-cards {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .ct-bin-conv-card { padding: 12px 10px; }
  .ct-bin-conv-card-val { font-size: 16px; }
  .ct-bin-conv-card::after { display: none; }

  .ct-bin-bit { width: 26px; height: 26px; font-size: 12px; border-radius: 4px; }
  .ct-bin-bit-sep { width: 5px; font-size: 8px; }

  .ct-bin-op-btn { padding: 6px 10px; font-size: 11px; }

  .ct-bin-panel-head { padding: 10px 12px; gap: 8px; }
  .ct-bin-panel-head span:first-child { font-size: 20px; }
  .ct-bin-panel-head strong { font-size: 13px; }
  .ct-bin-panel-head small { font-size: 11px; }

  .ct-bin-hint { font-size: 11px; padding: 6px 10px; }
}

/* ===== RESPONSIVE: 360px ===== */
@media (max-width: 360px) {
  .ct-bin-bit { width: 22px; height: 22px; font-size: 11px; }
  .ct-bin-bit-sep { width: 4px; }

  .ct-bin-op-btn { padding: 5px 8px; font-size: 10px; }

  .ct-bin-conv-card-val { font-size: 14px; }
  .ct-bin-conv-card-tag { font-size: 9px; }
}