/* ======================================= */
/* SIN·COS·TAN CALCULATOR - MODERN UNIFIED */
/* ======================================= */

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

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

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

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

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

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

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

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

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

.trig-calculator-card-mode-btn {
  flex: 1;
  padding: 0.625rem 1rem;
  background: var(--trig-calculator-button-bg);
  border: 2px solid var(--trig-calculator-button-border);
  border-radius: 8px;
  color: var(--trig-calculator-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;
}

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

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

/* ===== LAYOUT ===== */
.trig-calculator-card-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (min-width: 992px) {
  .trig-calculator-card-layout {
    grid-template-columns: 1fr 1fr;
  }
}

.trig-calculator-card-column {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

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

.trig-calculator-card-input-group {
  margin-bottom: 0.75rem;
}

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

.trig-calculator-card-input-group label {
  display: block;
  color: var(--trig-calculator-text);
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
}

/* Input wrapper */
.trig-calculator-card-input-wrapper {
  display: flex;
  align-items: center;
}

.trig-calculator-card-input-wrapper select,
.trig-calculator-card-input-group input[type="number"] {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: var(--trig-calculator-bg-input);
  color: var(--trig-calculator-text);
  border: 2px solid var(--trig-calculator-border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.trig-calculator-card-input-wrapper select {
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 40px;
}

.trig-calculator-card-input-group input::placeholder {
  color: var(--trig-calculator-text-secondary);
  opacity: 0.6;
}

.trig-calculator-card-input-wrapper select:focus,
.trig-calculator-card-input-group input[type="number"]:focus {
  outline: none;
  border-color: var(--trig-calculator-focus-border);
  box-shadow: 0 0 0 3px var(--trig-calculator-focus-shadow);
}

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

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

/* Slider */
.trig-calculator-card-slider-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.trig-calculator-card-slider {
  flex: 1;
  height: 8px;
  border-radius: 5px;
  background: var(--trig-calculator-bg-form);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.trig-calculator-card-slider::-webkit-slider-track {
  width: 100%;
  height: 8px;
  background: linear-gradient(to right, var(--trig-calculator-accent-blue), #2563eb);
  border-radius: 5px;
}

.trig-calculator-card-slider::-moz-range-track {
  width: 100%;
  height: 8px;
  background: linear-gradient(to right, var(--trig-calculator-accent-blue), #2563eb);
  border-radius: 5px;
}

.trig-calculator-card-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.trig-calculator-card-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.trig-calculator-card-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
}

.trig-calculator-card-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
}

.trig-calculator-card-slider-value {
  width: 80px;
  padding: 0.6rem 0.8rem;
  background: var(--trig-calculator-bg-input);
  border: 2px solid var(--trig-calculator-border);
  border-radius: 8px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--trig-calculator-text);
  font-weight: 600;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.trig-calculator-card-slider-value:focus {
  outline: none;
  border-color: var(--trig-calculator-focus-border);
  box-shadow: 0 0 0 3px var(--trig-calculator-focus-shadow);
}

.trig-calculator-card-slider-value::-webkit-inner-spin-button,
.trig-calculator-card-slider-value::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.trig-calculator-card-slider-value {
  -moz-appearance: textfield;
}

/* ===== ACTIONS ===== */
.trig-calculator-card-actions {
  display: flex;
  gap: 0.75rem;
}

.trig-calculator-card-btn {
  padding: 0.875rem 1.5rem;
  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;
}

.trig-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;
}

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

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

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

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

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

.trig-calculator-card-btn-secondary {
  background: var(--trig-calculator-button-bg);
  color: var(--trig-calculator-button-text);
  border: 2px solid var(--trig-calculator-button-border);
}

.trig-calculator-card-btn-secondary:hover {
  background: var(--trig-calculator-bg-card);
  border-color: var(--trig-calculator-button-hover-border);
  transform: translateY(-2px);
}

/* ===== ERROR ===== */
.trig-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%);
}

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

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

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

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

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

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

.trig-calculator-card-result p {
  font-size: 0.875rem;
  opacity: 0.95;
  margin: 0.75rem 0 0 0;
  line-height: 1.6;
  color: var(--trig-calculator-text-secondary);
}

@keyframes trigFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.trig-calculator-card-formula h3 {
  color: var(--trig-calculator-text);
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.trig-calculator-card-formula-item {
  color: var(--trig-calculator-text);
  font-size: 0.85rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

.trig-calculator-card-formula-item:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-formula-item strong {
  color: var(--trig-calculator-accent-blue);
  font-weight: 600;
}

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

.trig-calculator-card-triangle:hover {
  border-color: var(--trig-calculator-button-hover-border);
}

.trig-calculator-card-triangle h3 {
  color: var(--trig-calculator-text);
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
}

.trig-calculator-card-canvas-container {
  background: var(--trig-calculator-bg-preview);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 250px;
  border: 1px solid var(--trig-calculator-border);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

.trig-calculator-card-legend-labels {
  text-align: center;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--trig-calculator-text-secondary);
}

.trig-calculator-card-legend-side {
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.trig-calculator-card-legend-side.over {
  color: #58a6ff;
}

.trig-calculator-card-legend-side.aan {
  color: #7da2ff;
}

.trig-calculator-card-legend-side.schuin {
  color: #6a0dad;
}

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

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

.trig-calculator-card-visualization h3 {
  color: var(--trig-calculator-text);
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
}

.trig-calculator-card-circle-container {
  background: var(--trig-calculator-bg-preview);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 400px;
  border: 1px solid var(--trig-calculator-border);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

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

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

.trig-calculator-card-info h3 {
  color: #2196f3;
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.trig-calculator-card-info p {
  color: var(--trig-calculator-text);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0 0 0.5rem 0;
}

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

.trig-calculator-card-info em {
  color: var(--trig-calculator-accent-blue);
  font-style: italic;
  font-weight: 500;
}

.trig-calculator-card-info ul {
  margin: 0.5rem 0 0 0;
  padding-left: 20px;
}

.trig-calculator-card-info li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
  font-size: 0.85rem;
  color: var(--trig-calculator-text);
}

.trig-calculator-card-info li:last-child {
  margin-bottom: 0;
}

/* ===== TIP BOX ===== */
.trig-calculator-card-tip {
  background: var(--trig-calculator-bg-form);
  border-left: 4px solid #ffc107;
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--trig-calculator-border);
  transition: all 0.3s ease;
}

.trig-calculator-card-tip:hover {
  border-color: var(--trig-calculator-button-hover-border);
}

.trig-calculator-card-tip h3 {
  color: #ffc107;
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.trig-calculator-card-tip ul {
  margin: 0;
  padding-left: 20px;
  list-style: none;
}

.trig-calculator-card-tip li {
  color: var(--trig-calculator-text);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 0;
}

.trig-calculator-card-tip li:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-tip li::before {
  content: "→";
  color: #ffc107;
  font-weight: bold;
  position: absolute;
  left: -20px;
}

.trig-calculator-card-tip em {
  color: #ffc107;
  font-style: italic;
  font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
  .trig-calculator-card-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

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

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

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

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

  .trig-calculator-card-mode-btn {
    font-size: 0.8rem;
    padding: 0.5rem 0.875rem;
  }

  .trig-calculator-card-actions {
    flex-direction: column;
    gap: 0.5rem;
  }

  .trig-calculator-card-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
  }

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

  .trig-calculator-card-canvas-container {
    min-height: 220px;
    padding: 1rem;
  }

  .trig-calculator-card-circle-container {
    min-height: 350px;
    padding: 1.25rem;
  }
}

@media (max-width: 576px) {
  .trig-calculator-card {
    padding: 1rem;
    border-radius: 12px;
  }

  .trig-calculator-card h1 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
  }

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

  .trig-calculator-card-inputs,
  .trig-calculator-card-formula,
  .trig-calculator-card-triangle,
  .trig-calculator-card-visualization,
  .trig-calculator-card-info,
  .trig-calculator-card-tip {
    padding: 1rem;
  }

  .trig-calculator-card-canvas-container {
    padding: 1rem;
    min-height: 200px;
  }

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

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

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

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

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

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