/* UglyCalc - Calculator Page Styles */
/* Premium SaaS Design - Matching UglyPhoto */

/* ========================================
   Calculator Page Layout
   ======================================== */

.calculator-page {
  max-width: 640px;
  margin: 0 auto;
}

.calculator-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.calculator-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.3);
}

.calculator-header-text {
  flex: 1;
}

.calculator-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2px;
  color: var(--color-text);
}

.calculator-description {
  color: var(--color-text-secondary);
  font-size: var(--font-sm);
  margin: 0;
}

/* ========================================
   Calculator Box
   ======================================== */

.calculator-box {
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 4px 24px var(--color-shadow);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.calculator-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* ========================================
   Form Elements
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-sm);
  color: var(--color-text);
}

.form-hint {
  display: block;
  font-size: var(--font-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

/* ========================================
   Text & Number Inputs
   ======================================== */

.form-input {
  display: block;
  width: 100%;
  min-height: var(--input-height);
  padding: 16px var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: all var(--transition-fast);
  line-height: 1.4;
  box-sizing: border-box;
}

.light-mode .form-input {
  background: rgba(0, 0, 0, 0.03);
}

.form-input:hover {
  border-color: var(--color-border-hover);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light), var(--shadow-glow);
  background: var(--color-bg-card);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

/* ========================================
   SELECT / DROPDOWN - Using native browser styling
   ======================================== */

select.form-input {
  display: block;
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
}

select.form-input:hover {
  border-color: var(--color-primary);
}

select.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

/* Textarea */
textarea.form-input {
  height: auto;
  min-height: 120px;
  padding: var(--spacing-md);
  resize: vertical;
  line-height: 1.6;
}

/* Input with prefix/suffix */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix,
.input-suffix {
  position: absolute;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  pointer-events: none;
  z-index: 1;
}

.input-prefix { left: var(--spacing-md); }
.input-suffix { right: var(--spacing-md); }

.form-input.has-prefix {
  padding-left: calc(var(--spacing-md) + 1.5em);
}

.form-input.has-suffix {
  padding-right: calc(var(--spacing-md) + 2em);
}

/* ========================================
   Button Groups
   ======================================== */

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.button-group-btn {
  flex: 1;
  min-width: 80px;
  min-height: var(--button-min-size);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.light-mode .button-group-btn {
  background: rgba(0, 0, 0, 0.03);
}

.button-group-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.button-group-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
}

/* ========================================
   Range Slider
   ======================================== */

.range-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.range-value {
  font-size: var(--font-2xl);
  font-weight: 700;
  text-align: center;
  color: var(--color-primary);
  text-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
}

.form-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px;
  height: 28px;
  background: var(--gradient-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(249, 115, 22, 0.4);
  transition: transform var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.form-range::-moz-range-thumb {
  width: 28px;
  height: 28px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.senior-mode .form-range::-webkit-slider-thumb,
.senior-mode .form-range::-moz-range-thumb {
  width: 40px;
  height: 40px;
}

/* ========================================
   Results Display
   ======================================== */

.results-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  animation: fadeIn var(--transition-normal) ease-out;
}

.light-mode .results-box {
  background: rgba(0, 0, 0, 0.02);
}

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

.results-title {
  font-size: var(--font-xs);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.result-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.result-row:first-child {
  padding-top: 0;
}

.result-label {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.result-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: right;
  word-break: break-word;
}

/* Primary result */
.result-primary {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin: var(--spacing-sm) 0;
  border: none;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.3);
}

.result-primary .result-label {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

.result-primary .result-value {
  font-size: 1.5rem;
  color: white;
}

/* Responsive results */
@media (max-width: 480px) {
  .result-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .result-value {
    text-align: left;
    font-size: 1.3rem;
  }

  .result-primary {
    text-align: center;
  }

  .result-primary .result-row {
    align-items: center;
  }

  .result-primary .result-value {
    text-align: center;
    font-size: 1.8rem;
  }
}

/* ========================================
   Action Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-height: var(--button-min-size);
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(249, 115, 22, 0.4);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.light-mode .btn-secondary {
  background: rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-block {
  width: 100%;
}

/* ========================================
   Info Sections
   ======================================== */

.info-section {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.info-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.info-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.info-content p { margin-bottom: var(--spacing-md); }

.info-content ul,
.info-content ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.info-content li { margin-bottom: var(--spacing-sm); }

.info-content strong {
  color: var(--color-text);
  font-weight: 600;
}

.formula-box {
  background: rgba(255, 255, 255, 0.03);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: var(--font-sm);
  overflow-x: auto;
  border: 1px solid var(--color-border);
}

.light-mode .formula-box {
  background: rgba(0, 0, 0, 0.03);
}

/* ========================================
   Related Calculators
   ======================================== */

.related-section {
  margin-top: var(--spacing-2xl);
}

.related-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.related-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--color-shadow), var(--shadow-glow);
}

.related-card-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  color: var(--color-primary);
}

.related-card-title {
  font-weight: 600;
  font-size: var(--font-sm);
}

/* ========================================
   Special Components
   ======================================== */

/* Heart Rate Zones */
.hr-zones { margin-top: var(--spacing-lg); }

.hr-zone {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.light-mode .hr-zone {
  background: rgba(0, 0, 0, 0.02);
}

.hr-zone-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.hr-zone-name { font-weight: 600; font-size: var(--font-sm); }
.hr-zone-range { font-weight: 700; font-size: 1.1rem; color: var(--color-primary); }

.hr-zone-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--spacing-xs);
}

.hr-zone-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-normal);
}

.hr-zone-desc {
  font-size: var(--font-xs);
  color: var(--color-text-secondary);
}

/* Password Generator */
.password-display {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.light-mode .password-display {
  background: rgba(0, 0, 0, 0.02);
}

.password-text {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 1.4rem;
  word-break: break-all;
  color: var(--color-text);
  line-height: 1.5;
}

.password-length {
  font-size: var(--font-xs);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

.strength-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin: var(--spacing-sm) 0;
}

.strength-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-normal);
}

.strength-weak { width: 25%; background-color: #ef4444; }
.strength-fair { width: 50%; background-color: #f59e0b; }
.strength-good { width: 75%; background-color: #3b82f6; }
.strength-strong { width: 100%; background-color: #22c55e; }

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: 1rem;
  padding: var(--spacing-xs) 0;
}

.checkbox-label input[type="checkbox"] {
  width: 22px;
  height: 22px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.senior-mode .checkbox-label input[type="checkbox"] {
  width: 28px;
  height: 28px;
}

/* Color Converter */
#color-preview {
  border: 2px solid var(--color-border) !important;
  box-shadow: 0 4px 12px var(--color-shadow);
}

/* Date Input */
input[type="date"].form-input::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.6;
  filter: invert(1);
}

.light-mode input[type="date"].form-input::-webkit-calendar-picker-indicator {
  filter: none;
}

input[type="date"].form-input::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

/* Input suffix select */
.input-suffix-select {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  height: calc(var(--input-height) - 12px);
  padding: 0 var(--spacing-sm);
  font-size: var(--font-sm);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  padding-right: 28px;
}

.light-mode .input-suffix-select {
  background-color: rgba(0, 0, 0, 0.05);
}

.input-suffix-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-input.has-suffix-select {
  padding-right: 100px;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 640px) {
  .calculator-box {
    padding: var(--spacing-lg);
  }

  .calculator-icon {
    width: 64px;
    height: 64px;
    font-size: 2rem;
  }

  .calculator-title {
    font-size: 1.6rem;
  }

  .info-section {
    padding: var(--spacing-lg);
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .calculator-box {
    padding: var(--spacing-md);
  }

  .button-group {
    flex-direction: column;
  }

  .button-group-btn {
    width: 100%;
  }

  .password-text {
    font-size: 1.1rem;
  }
}