/* FITNESSPLAT Calculators Styles */
:root {
  --calc-primary: #0f172e;
  --calc-primary-light: #1a2847;
  --calc-secondary: #10B981;
  --calc-secondary-dark: #059669;
  --calc-accent-blue: #00D4FF;
  --calc-accent-cyan: #34D399;
  --calc-text: #ffffff;
  --calc-text-light: #b0bec5;
  --calc-bg: #0a0f1e;
  --calc-card-bg: rgba(26, 40, 71, 0.6);
  --calc-card-border: rgba(16, 185, 129, 0.2);
  --calc-shadow: rgba(16, 185, 129, 0.1);
  --calc-glow: rgba(16, 185, 129, 0.3);
}



.calculators-main {
  min-height: 100vh;
  background: var(--calc-bg);
  padding: 2rem 1rem;
  transition: background 0.3s ease;
}

.calculators-container {
  max-width: 1400px;
  margin: 0 auto;
}

.calculators-header {
  text-align: center;
  margin-bottom: 1rem;
  position: relative;
  animation: fadeInDown 0.6s ease;
  
}

.calculators-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--calc-text);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--calc-secondary) 0%, var(--calc-accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.calculators-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--calc-text-light);
  max-width: 700px;
  margin: 0 auto;
}

.theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
}

.theme-btn {
  background: var(--calc-card-bg);
  border: 2px solid var(--calc-card-border);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--calc-text);
  font-size: 1.25rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.theme-btn:hover {
  transform: rotate(15deg) scale(1.1);
  border-color: var(--calc-secondary);
  box-shadow: 0 0 20px var(--calc-glow);
}

.calculator-selector {
  background: var(--calc-card-bg);
  border: 2px solid var(--calc-card-border);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  animation: fadeInDown 0.6s ease;
}

.selector-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.selector-btn {
  padding: 0.875rem 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border: 2px solid var(--calc-card-border);
  border-radius: 12px;
  color: var(--calc-text);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: inherit;
}

.selector-btn:hover {
  border-color: var(--calc-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--calc-glow);
}

.selector-btn.active {
  background: linear-gradient(135deg, var(--calc-secondary), var(--calc-accent-cyan));
  border-color: var(--calc-secondary);
  color: var(--calc-text);
  box-shadow: 0 4px 20px var(--calc-glow);
}

.selector-btn.active:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 24px var(--calc-glow);
}

.calculator-card.hidden {
  display: none;
}

.calculators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  animation: fadeInUp 0.8s ease;
}

.calculator-card {
  background: var(--calc-card-bg);
  border: 2px solid var(--calc-card-border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px var(--calc-shadow);
}

.calculator-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--calc-secondary), var(--calc-accent-blue), var(--calc-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.calculator-card:hover::before {
  transform: scaleX(1);
}

.calculator-card:hover {
  transform: translateY(-8px);
  border-color: var(--calc-secondary);
  box-shadow: 0 16px 48px var(--calc-glow);
}

.card-header {
  margin-bottom: 2rem;
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--calc-secondary), var(--calc-accent-cyan));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.75rem;
  color: var(--calc-text);
  box-shadow: 0 4px 20px var(--calc-glow);
  animation: pulse 2s ease-in-out infinite;
}

.card-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--calc-text);
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--calc-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

.card-content {
  animation: fadeIn 0.5s ease;
}

.calculator-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  color: var(--calc-text);
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group select {
  padding: 0.875rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 2px solid var(--calc-card-border);
  border-radius: 12px;
  color: var(--calc-text);
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: inherit;
}



.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--calc-secondary);
  box-shadow: 0 0 0 3px var(--calc-glow);
  transform: translateY(-2px);
}

.form-group input[type="range"] {
  padding: 0;
  height: 8px;
  background: rgba(0, 0, 0, 0.3);
  border: none;
  border-radius: 4px;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--calc-secondary), var(--calc-accent-cyan));
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px var(--calc-glow);
  transition: all 0.3s ease;
}

.form-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 15px var(--calc-secondary);
}

.form-group input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--calc-secondary), var(--calc-accent-cyan));
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px var(--calc-glow);
  transition: all 0.3s ease;
}

.form-group input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 15px var(--calc-secondary);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--calc-text-light);
  margin-top: 0.25rem;
}

.calculate-btn {
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--calc-secondary), var(--calc-accent-cyan));
  border: none;
  border-radius: 12px;
  color: var(--calc-text);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 20px var(--calc-glow);
  position: relative;
  overflow: hidden;
}

.calculate-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.calculate-btn:hover::before {
  width: 300px;
  height: 300px;
}

.calculate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--calc-glow);
}

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

.results-container {
  margin-top: 2rem;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border: 2px solid var(--calc-secondary);
  border-radius: 16px;
  animation: slideIn 0.5s ease;
}



.result-item {
  margin-bottom: 1rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.1);
  border-left: 4px solid var(--calc-secondary);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.result-item:hover {
  transform: translateX(4px);
  background: rgba(16, 185, 129, 0.15);
}

.result-item:last-child {
  margin-bottom: 0;
}

.result-label {
  font-size: 0.85rem;
  color: var(--calc-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.result-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--calc-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.result-unit {
  font-size: 1rem;
  color: var(--calc-text-light);
  font-weight: 400;
}

.result-targets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.result-target {
  padding: 1rem;
  background: rgba(0, 212, 255, 0.1);
  border: 2px solid var(--calc-accent-blue);
  border-radius: 12px;
  text-align: center;
  transition: all 0.3s ease;
}

.result-target:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.result-target-label {
  font-size: 0.75rem;
  color: var(--calc-text-light);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.result-target-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--calc-accent-blue);
}

.strength-chart {
  margin-top: 1.5rem;
}

.strength-level {
  margin-bottom: 1rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  border-left: 4px solid transparent;
  transition: all 0.3s ease;
}

.strength-level.active {
  border-left-color: var(--calc-secondary);
  background: rgba(16, 185, 129, 0.15);
  transform: translateX(4px);
}

.strength-level-label {
  font-weight: 700;
  color: var(--calc-text);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.strength-level-range {
  color: var(--calc-text-light);
  font-size: 0.9rem;
}

.progress-bar-container {
  margin-top: 1rem;
  height: 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--calc-secondary), var(--calc-accent-cyan));
  border-radius: 6px;
  transition: width 1s ease;
  box-shadow: 0 0 10px var(--calc-glow);
}

.rm-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.rm-method {
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 2px solid var(--calc-card-border);
  border-radius: 12px;
  text-align: center;
}

.rm-method-label {
  font-size: 0.85rem;
  color: var(--calc-text-light);
  margin-bottom: 0.5rem;
}

.rm-method-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--calc-secondary);
}

.rm-average {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(0, 212, 255, 0.2));
  border: 2px solid var(--calc-secondary);
  border-radius: 16px;
  text-align: center;
}

.rm-average-label {
  font-size: 0.9rem;
  color: var(--calc-text-light);
  margin-bottom: 0.5rem;
}

.rm-average-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--calc-text);
  margin-bottom: 0.5rem;
}

.rm-range {
  font-size: 0.9rem;
  color: var(--calc-text-light);
}

.bodyfat-visual {
  margin: 1.5rem 0;
  text-align: center;
}

.bodyfat-figure {
  width: 200px;
  height: 300px;
  margin: 0 auto;
  position: relative;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 20px;
  border: 2px solid var(--calc-card-border);
  overflow: hidden;
}

.bodyfat-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, var(--calc-secondary), var(--calc-accent-cyan));
  transition: height 0.5s ease;
  opacity: 0.6;
}

.bodyfat-category {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 2px solid var(--calc-secondary);
  border-radius: 12px;
  font-weight: 700;
  color: var(--calc-secondary);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .calculators-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .calculator-card {
    padding: 1.5rem;
  }

  .theme-toggle {
    position: static;
    margin-top: 1rem;
    display: flex;
    justify-content: center;
  }

  .result-targets {
    grid-template-columns: 1fr;
  }

  .rm-methods {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .calculators-header h1 {
    font-size: 1.5rem;
  }

  .card-header h2 {
    font-size: 1.25rem;
  }

  .result-value {
    font-size: 1.25rem;
  }
}