/* Long Division Calculator Plugin – blue & white theme */

.longdivc-wrap {
  --ldc-navy: #1e3a5f;
  --ldc-blue: #2563eb;
  --ldc-blue-dark: #1d4ed8;
  --ldc-blue-light: #e8f4fc;
  --ldc-blue-mid: #3b82f6;
  --ldc-sky: #dbeafe;
  --ldc-gray: #64748b;
  --ldc-gray-light: #e2e8f0;
  --ldc-text: #1a2332;
  --ldc-error: #ef4444;
  --ldc-radius: 12px;
  --ldc-shadow: 0 4px 24px rgba(30, 58, 95, 0.1);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ldc-text);
}

.longdivc-wrap *,
.longdivc-wrap *::before,
.longdivc-wrap *::after {
  box-sizing: border-box;
}

/* Split layout */
.longdivc-wrap.ldc-hero-split-container {
  width: 100%;
  max-width: 1280px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  margin-bottom: 0;
  border: 1px solid #E5E7EB;
}

@media (max-width: 900px) {
  .longdivc-wrap.ldc-hero-split-container {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 28px 20px;
  }
}

.longdivc-wrap .ldc-hero-left {
  display: flex;
  flex-direction: column;
}

.longdivc-wrap .ldc-split-h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--ldc-navy);
  margin: 0 0 16px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.longdivc-wrap .ldc-split-p {
  font-size: 1rem;
  color: var(--ldc-gray);
  margin-bottom: 28px;
  line-height: 1.6;
}

/* Bracket inputs */
.longdivc-wrap .ldc-bracket-inputs-wrapper {
  display: flex;
  align-items: stretch;
  margin-bottom: 24px;
}

.longdivc-wrap .ldc-bracket-divisor {
  width: 90px;
}

.longdivc-wrap .ldc-bracket-divisor input {
  width: 100%;
  padding: 16px;
  font-size: 1.25rem;
  font-weight: 700;
  border: 2px solid var(--ldc-gray-light);
  border-right: 3px solid var(--ldc-navy);
  border-radius: 8px 0 0 8px;
  text-align: center;
  outline: none;
  height: 60px;
  color: var(--ldc-navy);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.longdivc-wrap .ldc-bracket-dividend input {
  width: 100%;
  padding: 16px;
  font-size: 1.25rem;
  font-weight: 700;
  border: 2px solid var(--ldc-gray-light);
  border-top: 3px solid var(--ldc-navy);
  border-left: none;
  border-radius: 0 8px 8px 0;
  outline: none;
  height: 60px;
  color: var(--ldc-navy);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.longdivc-wrap .ldc-bracket-divisor input:focus,
.longdivc-wrap .ldc-bracket-dividend input:focus {
  border-color: var(--ldc-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.longdivc-wrap .ldc-bracket-divisor input:focus {
  border-right: 3px solid var(--ldc-navy);
}

.longdivc-wrap .ldc-bracket-dividend input:focus {
  border-top: 3px solid var(--ldc-navy);
  border-left: none;
}

.longdivc-wrap .ldc-input-error {
  border-color: var(--ldc-error) !important;
}

.longdivc-wrap input[type="number"]::-webkit-outer-spin-button,
.longdivc-wrap input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.longdivc-wrap input[type="number"] {
  -moz-appearance: textfield;
}

/* Buttons */
.longdivc-wrap .ldc-bracket-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.longdivc-wrap .ldc-btn-clear,
.longdivc-wrap .ldc-btn-calc {
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 120px;
}

.longdivc-wrap .ldc-btn-clear {
  background: #fff;
  border: 2px solid var(--ldc-gray-light);
  color: var(--ldc-navy);
}

.longdivc-wrap .ldc-btn-clear:hover {
  background: var(--ldc-blue-light);
  border-color: var(--ldc-blue-mid);
}

.longdivc-wrap .ldc-btn-calc {
  background: var(--ldc-blue);
  border: 2px solid var(--ldc-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.longdivc-wrap .ldc-btn-calc:hover {
  background: var(--ldc-blue-dark);
  border-color: var(--ldc-blue-dark);
  transform: translateY(-1px);
}

/* Stars */
.longdivc-wrap .ldc-stars-container {
  text-align: center;
  margin-top: auto;
  padding-top: 20px;
}

.longdivc-wrap .ldc-stars-text {
  font-size: 0.9rem;
  color: var(--ldc-gray);
  margin: 0 0 8px;
  position: relative;
}

.longdivc-wrap .ldc-stars-text::before,
.longdivc-wrap .ldc-stars-text::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 22%;
  height: 1px;
  background: var(--ldc-gray-light);
}

.longdivc-wrap .ldc-stars-text::before {
  left: 0;
}

.longdivc-wrap .ldc-stars-text::after {
  right: 0;
}

.longdivc-wrap .ldc-stars {
  color: var(--ldc-blue-mid);
  font-size: 1.2rem;
  display: flex;
  justify-content: center;
  gap: 4px;
}

/* Results panel */
.longdivc-wrap .ldc-hero-right {
  background: #fff;
  border-radius: var(--ldc-radius);
  padding: 0;
  min-height: 380px;
  display: flex;
  flex-direction: column;
}

.longdivc-wrap .ldc-results-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  flex: 1;
  color: var(--ldc-gray);
  text-align: center;
  padding: 24px;
  background: var(--ldc-blue-light);
  border-radius: var(--ldc-radius);
  border: 2px dashed rgba(37, 99, 235, 0.25);
}

.longdivc-wrap .ldc-results-box {
  background: #fff;
  border-radius: var(--ldc-radius);
  height: 100%;
  flex: 1;
  box-shadow: var(--ldc-shadow);
  overflow: hidden;
  border: 1px solid var(--ldc-sky);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.longdivc-wrap .ldc-results-box.show {
  opacity: 1;
  transform: translateY(0);
}

.longdivc-wrap .ldc-result-highlight {
  background: linear-gradient(135deg, var(--ldc-blue-light) 0%, var(--ldc-sky) 100%);
  padding: 20px 24px;
  border-bottom: 1px solid rgba(37, 99, 235, 0.15);
  color: var(--ldc-navy);
}

.longdivc-wrap .ldc-result-label {
  font-size: 0.875rem;
  color: var(--ldc-gray);
  margin-bottom: 8px;
  display: block;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.longdivc-wrap .ldc-result-inline-math {
  font-size: 2.25rem;
  font-weight: 800;
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ldc-navy);
}

.longdivc-wrap .ldc-inline-quotient {
  color: var(--ldc-blue);
}

.longdivc-wrap .ldc-inline-bracket {
  font-weight: 300;
  color: var(--ldc-gray);
}

.longdivc-wrap .ldc-math-steps-container {
  padding: 24px;
}

.longdivc-wrap .ldc-result-label-h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 20px;
  color: var(--ldc-navy);
}

.longdivc-wrap .ldc-math-vertical {
  font-family: 'Courier New', Courier, monospace;
  font-size: 1.35rem;
  line-height: 1.45;
  margin-bottom: 28px;
  color: var(--ldc-navy);
  white-space: pre;
  overflow-x: auto;
  letter-spacing: 0.2em;
  padding: 16px;
  background: var(--ldc-blue-light);
  border-radius: 8px;
  border: 1px solid var(--ldc-sky);
}

.longdivc-wrap .ldc-final-summary {
  font-size: 1rem;
  color: var(--ldc-text);
  line-height: 1.7;
}

.longdivc-wrap .ldc-value-highlight {
  color: var(--ldc-blue);
  font-weight: 800;
}

.longdivc-wrap .ldc-error-msg {
  color: var(--ldc-error);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 4px;
  display: none;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.07);
  border-radius: 8px;
  border-left: 3px solid var(--ldc-error);
}

.longdivc-wrap .ldc-error-msg.show {
  display: flex;
}

/* How it works card */
.longdivc-wrap.ldc-howto-card {
  background: linear-gradient(135deg, var(--ldc-navy) 0%, var(--ldc-blue) 100%);
  color: #ffffff;
  border-radius: 18px;
  box-shadow: var(--ldc-shadow);
  padding: 28px;
  border: none;
}

.longdivc-wrap.ldc-howto-card .ldc-card-title {
  color: #ffffff;
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 20px;
  padding-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.longdivc-wrap.ldc-howto-card .ldc-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.longdivc-wrap .ldc-howto-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.longdivc-wrap .ldc-howto-step {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.97rem;
  line-height: 1.5;
}

.longdivc-wrap .ldc-howto-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
}