/* ======================================= */
/* PYTHAGORAS CALCULATOR - MODERN UNIFIED */
/* ======================================= */

/* ===== COLOR DEFINITIONS ===== */
/* Dark mode is default, light mode overrides via :root.light-mode */

.pythagoras-calculator-card {
  /* Dark mode colors */
  --pythagoras-card-bg-card: var(--secondary-bg);
  --pythagoras-card-bg-input: var(--primary-bg);
  --pythagoras-card-bg-form: var(--secondary-bg);
  --pythagoras-card-bg-preview: var(--primary-bg);
  --pythagoras-card-border: var(--border-color);
  --pythagoras-card-text: var(--text-primary);
  --pythagoras-card-text-secondary: var(--text-secondary);
  --pythagoras-card-button-bg: var(--link-color);
  --pythagoras-card-button-text: var(--text-primary);
  --pythagoras-card-button-border: var(--border-color);
  --pythagoras-card-button-hover-border: var(--link-color);
  --pythagoras-card-button-hover-shadow: rgba(88, 166, 255, 0.2);
  --pythagoras-card-accent-blue: #3b82f6;
  --pythagoras-card-accent-red: #ef4444;
  --pythagoras-card-accent-red-dark: #dc2626;
  --pythagoras-card-overlay-dark: rgba(255, 255, 255, 0.05);
  --pythagoras-card-overlay-medium: rgba(255, 255, 255, 0.08);
  --pythagoras-card-overlay-light: rgba(255, 255, 255, 0.03);
  --pythagoras-card-border-dark: rgba(45, 55, 72, 0.5);
  --pythagoras-card-focus-border: var(--link-color);
  --pythagoras-card-focus-shadow: rgba(88, 166, 255, 0.1);
}

/* Light mode color overrides */
:root.light-mode .pythagoras-calculator-card {
  --pythagoras-card-bg-card: #ffffff;
  --pythagoras-card-bg-input: #ffffff;
  --pythagoras-card-bg-form: #f9fafb;
  --pythagoras-card-bg-preview: #ffffff;
  --pythagoras-card-border: #d0d7de;
  --pythagoras-card-text: #24292f;
  --pythagoras-card-text-secondary: #57606a;
  --pythagoras-card-button-bg: #ffffff;
  --pythagoras-card-button-text: #24292f;
  --pythagoras-card-button-border: #d0d7de;
  --pythagoras-card-button-hover-border: #0969da;
  --pythagoras-card-button-hover-shadow: rgba(9, 105, 218, 0.15);
  --pythagoras-card-accent-blue: #3b82f6;
  --pythagoras-card-accent-red: #ef4444;
  --pythagoras-card-accent-red-dark: #dc2626;
  --pythagoras-card-overlay-dark: #f9fafb;
  --pythagoras-card-overlay-medium: #f3f4f6;
  --pythagoras-card-overlay-light: #ffffff;
  --pythagoras-card-border-dark: #d0d7de;
  --pythagoras-card-focus-border: #0969da;
  --pythagoras-card-focus-shadow: rgba(9, 105, 218, 0.1);
}

/* ===== MAIN CARD ===== */
.pythagoras-calculator-card {
  max-width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  background: var(--pythagoras-card-bg-card);
  border: 1px solid var(--pythagoras-card-border);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  color: var(--pythagoras-card-text);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

/* Gradient top border */
.pythagoras-calculator-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--pythagoras-card-accent-blue), #2563eb, var(--pythagoras-card-accent-blue));
  background-size: 200% 100%;
  animation: pythagorasGradientShift 3s ease infinite;
}

@keyframes pythagorasGradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ===== HEADER ===== */
.pythagoras-calculator-card h1 {
  color: var(--pythagoras-card-text);
  font-size: 1.6rem;
  margin-bottom: 1rem;
  text-align: center;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.pythagoras-calculator-card-subtitle {
  text-align: center;
  color: var(--pythagoras-card-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-weight: 400;
}

/* ===== MODE SELECTOR ===== */
.pythagoras-calculator-card-selector {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
  background: var(--pythagoras-card-bg-form);
  border-radius: 12px;
  padding: 4px;
  border: 1px solid var(--pythagoras-card-border);
}

.pythagoras-calculator-card-mode-btn {
  flex: 1;
  padding: 0.625rem 1rem;
  background: var(--pythagoras-card-button-bg);
  border: 2px solid var(--pythagoras-card-button-border);
  border-radius: 8px;
  color: var(--pythagoras-card-button-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.pythagoras-calculator-card-mode-btn:hover {
  border-color: var(--pythagoras-card-button-hover-border);
  background: var(--pythagoras-card-bg-card);
  transform: translateY(-1px);
}

.pythagoras-calculator-card-mode-btn.active {
  background: linear-gradient(135deg, var(--pythagoras-card-accent-blue) 0%, #2563eb 100%) !important;
  border-color: var(--pythagoras-card-accent-blue) !important;
  color: white !important;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* ===== LAYOUT ===== */
.pythagoras-calculator-card-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.pythagoras-calculator-card-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ===== INPUTS ===== */
.pythagoras-calculator-card-inputs {
  background: var(--pythagoras-card-bg-form);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--pythagoras-card-border);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-inputs:hover {
  border-color: var(--pythagoras-card-button-hover-border);
}

.pythagoras-calculator-card-input-group {
  margin-bottom: 1.25rem;
}

.pythagoras-calculator-card-input-group:last-child {
  margin-bottom: 0;
}

.pythagoras-calculator-card-input-group label {
  display: block;
  margin-bottom: 0.625rem;
  font-weight: 600;
  color: var(--pythagoras-card-accent-blue);
  font-size: 0.95rem;
}

/* Input wrapper with arrow controls */
.pythagoras-calculator-card-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--pythagoras-card-bg-input);
  border: 2px solid var(--pythagoras-card-border);
  border-radius: 12px;
  overflow: hidden;
  height: 56px;
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-input-wrapper:focus-within {
  border-color: var(--pythagoras-card-focus-border);
  box-shadow: 0 0 0 3px var(--pythagoras-card-focus-shadow);
}

.pythagoras-calculator-card-input-group input[type="number"] {
  flex-grow: 1;
  border: none;
  background: transparent;
  text-align: center;
  font-size: 1.1rem;
  padding: 0 15px;
  height: 100%;
  color: var(--pythagoras-card-text);
  font-weight: 600;
  box-sizing: border-box;
}

.pythagoras-calculator-card-input-group input[type="number"]:focus {
  outline: none;
}

.pythagoras-calculator-card-input-group input[type="number"]::-webkit-inner-spin-button,
.pythagoras-calculator-card-input-group input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.pythagoras-calculator-card-input-group input[type="number"] {
  -moz-appearance: textfield;
}

.pythagoras-calculator-card-input-group input[type="number"]::placeholder {
  color: var(--pythagoras-card-text-secondary);
  opacity: 0.6;
}

/* Arrow controls */
.pythagoras-calculator-card-arrow-controls {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-left: 1px solid var(--pythagoras-card-border);
}

.pythagoras-calculator-card-arrow-btn {
  flex: 1;
  width: 50px;
  background: var(--pythagoras-card-bg-form);
  color: var(--pythagoras-card-text);
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  position: relative;
}

.pythagoras-calculator-card-arrow-btn.up {
  border-bottom: 1px solid var(--pythagoras-card-border);
}

.pythagoras-calculator-card-arrow-btn:hover {
  background: var(--pythagoras-card-accent-blue);
  color: white;
}

.pythagoras-calculator-card-arrow-btn:active {
  transform: scale(0.95);
}

/* ===== ACTIONS ===== */
.pythagoras-calculator-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.pythagoras-calculator-card-btn {
  padding: 0.875rem 1.25rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.pythagoras-calculator-card-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  pointer-events: none;
}

.pythagoras-calculator-card-btn:hover::before {
  width: 300px;
  height: 300px;
}

.pythagoras-calculator-card-btn-icon {
  font-size: 1.1rem;
}

.pythagoras-calculator-card-btn-primary {
  background: linear-gradient(135deg, var(--pythagoras-card-accent-blue) 0%, #2563eb 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
  border: 2px solid var(--pythagoras-card-accent-blue);
}

.pythagoras-calculator-card-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  opacity: 0.9;
}

.pythagoras-calculator-card-btn-primary:active {
  transform: translateY(0);
}

.pythagoras-calculator-card-btn-secondary {
  background: linear-gradient(135deg, var(--pythagoras-card-accent-red) 0%, var(--pythagoras-card-accent-red-dark) 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
  border: 2px solid var(--pythagoras-card-accent-red);
}

.pythagoras-calculator-card-btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
  opacity: 0.9;
}

.pythagoras-calculator-card-btn-secondary:active {
  transform: translateY(0);
}

/* ===== ERROR ===== */
.pythagoras-calculator-card-error {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  display: none;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(-10px);
  color: white;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  animation: pythagorasShake 0.5s;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.pythagoras-calculator-card-error.show {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

@keyframes pythagorasShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

/* ===== RESULT ===== */
.pythagoras-calculator-card-result {
  text-align: center;
  background: var(--pythagoras-card-bg-form);
  border-radius: 12px;
  padding: 1.5rem;
  border: 2px solid var(--pythagoras-card-accent-blue);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
  transition: all 0.3s ease;
  display: none;
  animation: pythagorasFadeIn 0.5s ease-out;
}

.pythagoras-calculator-card-result:hover {
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.pythagoras-calculator-card-result.show {
  display: block;
}

.pythagoras-calculator-card-result h3 {
  margin: 0 0 0.75rem 0;
  color: var(--pythagoras-card-accent-blue);
  font-size: 1.1rem;
  font-weight: 600;
}

.pythagoras-calculator-card-result-value {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--pythagoras-card-text);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  font-family: 'Courier New', monospace;
}

.pythagoras-calculator-card-result p {
  font-size: 0.875rem;
  opacity: 0.95;
  margin: 0.75rem 0 0 0;
  color: var(--pythagoras-card-text-secondary);
}

@keyframes pythagorasFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== FORMULA ===== */
.pythagoras-calculator-card-formula {
  background: var(--pythagoras-card-bg-form);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--pythagoras-card-border);
  border-left: 4px solid var(--pythagoras-card-accent-blue);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-formula:hover {
  border-color: var(--pythagoras-card-button-hover-border);
}

.pythagoras-calculator-card-formula h3 {
  color: var(--pythagoras-card-accent-blue);
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  font-weight: 600;
}

.pythagoras-calculator-card-formula-display {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--pythagoras-card-accent-blue);
  text-align: center;
  margin: 0.75rem 0;
  font-family: "Courier New", monospace;
}

.pythagoras-calculator-card-formula-text {
  text-align: center;
  color: var(--pythagoras-card-text-secondary);
  margin: 0.75rem 0 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ===== EXAMPLES ===== */
.pythagoras-calculator-card-examples {
  background: var(--pythagoras-card-bg-form);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--pythagoras-card-border);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-examples:hover {
  border-color: var(--pythagoras-card-button-hover-border);
}

.pythagoras-calculator-card-examples h3 {
  color: var(--pythagoras-card-accent-blue);
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  font-weight: 600;
}

.pythagoras-calculator-card-examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.625rem;
}

.pythagoras-calculator-card-example-btn {
  background: var(--pythagoras-card-button-bg);
  border: 2px solid var(--pythagoras-card-button-border);
  color: var(--pythagoras-card-button-text);
  padding: 0.625rem 0.875rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 600;
  font-size: 0.9rem;
}

.pythagoras-calculator-card-example-btn:hover {
  background: var(--pythagoras-card-accent-blue);
  color: white;
  border-color: var(--pythagoras-card-accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* ===== VISUALIZATION ===== */
.pythagoras-calculator-card-visualization {
  background: var(--pythagoras-card-bg-form);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--pythagoras-card-border);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-visualization:hover {
  border-color: var(--pythagoras-card-button-hover-border);
}

.pythagoras-calculator-card-visualization h3 {
  color: var(--pythagoras-card-accent-blue);
  margin: 0 0 1rem 0;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
}

.pythagoras-calculator-card-canvas-container {
  background: var(--pythagoras-card-bg-preview);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 400px;
  border: 1px solid var(--pythagoras-card-border);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.pythagoras-calculator-card-canvas-container canvas {
  max-width: 100%;
  border-radius: 8px;
}

/* ===== STATS ===== */
.pythagoras-calculator-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.pythagoras-calculator-card-stat-item {
  background: var(--pythagoras-card-bg-form);
  padding: 1rem;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--pythagoras-card-border);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-stat-item:hover {
  border-color: var(--pythagoras-card-accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.pythagoras-calculator-card-stat-label {
  font-size: 0.85rem;
  color: var(--pythagoras-card-text-secondary);
  margin-bottom: 0.375rem;
  font-weight: 500;
}

.pythagoras-calculator-card-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--pythagoras-card-accent-blue);
  font-family: "Courier New", monospace;
}

/* ===== INFO BOX ===== */
.pythagoras-calculator-card-info {
  background: var(--pythagoras-card-bg-form);
  border-left: 4px solid #2196f3;
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--pythagoras-card-border);
  transition: all 0.3s ease;
}

.pythagoras-calculator-card-info:hover {
  border-color: var(--pythagoras-card-button-hover-border);
}

.pythagoras-calculator-card-info h3 {
  color: #2196f3;
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  font-weight: 600;
}

.pythagoras-calculator-card-info p {
  color: var(--pythagoras-card-text);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 0.625rem 0;
}

.pythagoras-calculator-card-info p:last-child {
  margin-bottom: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
  .pythagoras-calculator-card-layout {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

@media (max-width: 768px) {
  .pythagoras-calculator-card {
    padding: 1rem;
    border-radius: 12px;
  }

  .pythagoras-calculator-card h1 {
    font-size: 1.5rem;
  }

  .pythagoras-calculator-card-subtitle {
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
  }

  .pythagoras-calculator-card-selector {
    flex-direction: row;
  }

  .pythagoras-calculator-card-mode-btn {
    font-size: 0.85rem;
    padding: 0.75rem 1rem;
  }

  .pythagoras-calculator-card-actions {
    grid-template-columns: 1fr;
    gap: 0.625rem;
  }

  .pythagoras-calculator-card-btn {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  .pythagoras-calculator-card-result-value {
    font-size: 1.5rem;
  }

  .pythagoras-calculator-card-canvas-container {
    min-height: 300px;
    padding: 1rem;
  }

  .pythagoras-calculator-card-stats {
    grid-template-columns: 1fr;
  }

  .pythagoras-calculator-card-examples-grid {
    grid-template-columns: 1fr;
  }

  .pythagoras-calculator-card-input-wrapper {
    height: 50px;
  }

  .pythagoras-calculator-card-arrow-btn {
    width: 45px;
    font-size: 1.2rem;
  }
}

@media (max-width: 576px) {
  .pythagoras-calculator-card {
    padding: 1rem;
  }

  .pythagoras-calculator-card h1 {
    font-size: 1.35rem;
  }

  .pythagoras-calculator-card-subtitle {
    font-size: 0.8rem;
  }

  .pythagoras-calculator-card-result-value {
    font-size: 1.3rem;
  }
}

@media (max-width: 375px) {
  .pythagoras-calculator-card {
    padding: 1rem;
  }

  .pythagoras-calculator-card h1 {
    font-size: 1.3rem;
  }

  .pythagoras-calculator-card-subtitle {
    font-size: 0.8rem;
  }

  .pythagoras-calculator-card-result-value {
    font-size: 1.1rem;
  }
}