/* ================================
   Eximius Design System
   ================================ */

:root {
  /* Colors */
  --bg-dark: #0a0a0a;
  --bg-card: #1a1a1a;
  --bg-input: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-tertiary: #808080;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --accent-dark: #00994d;
  --border: #333333;
  --success: #00ff88;
  --warning: #ff6b35;
  --error: #ff3b3b;
  
  /* Macro Colors */
  --protein: #00ff88;
  --carbs: #3b82f6;
  --fat: #ff6b35;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 0 20px rgba(0, 255, 136, 0.3);
  
  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Work Sans', sans-serif;
  
  /* Transitions */
  --transition: 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.tdee-calculator {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ================================
   Header
   ================================ */

.header {
  text-align: center;
  margin-bottom: 3rem;
  padding: 2rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.logo-gradient {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.tagline {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ================================
   Disclaimer
   ================================ */

.disclaimer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.disclaimer-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--warning);
}

.disclaimer-header svg {
  flex-shrink: 0;
}

.disclaimer-header h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--warning);
  margin: 0;
}

.disclaimer-card p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ================================
   Cards
   ================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
  animation: slideUp 0.6s ease-out backwards;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

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

.card-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

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

.form-row {
  margin-bottom: 1.5rem;
}

.form-row:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Gender Toggle */
.gender-toggle {
  display: flex;
  gap: 0.75rem;
}

.gender-btn {
  flex: 1;
  padding: 1rem;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.gender-btn:hover {
  border-color: var(--accent-dim);
  color: var(--text-primary);
}

.gender-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-dark);
  box-shadow: var(--shadow-accent);
}

/* Number Input Group */
.number-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.input-btn {
  width: 48px;
  height: 48px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 300;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.input-btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent);
  color: var(--text-primary);
}

.number-input {
  flex: 1;
  min-width: 0;
  height: 48px;
  padding: 0 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.125rem;
  text-align: center;
  transition: all var(--transition);
}

.number-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.input-unit {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  min-width: 50px;
}

/* Measurement Input */
.measurement-input-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.measurement-input {
  flex: 1;
  height: 48px;
  padding: 0 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.125rem;
  transition: all var(--transition);
}

.measurement-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

/* Unit Toggle */
.unit-toggle {
  display: flex;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}

.unit-btn {
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.unit-btn:hover {
  color: var(--text-primary);
}

.unit-btn.active {
  background: var(--accent);
  color: var(--bg-dark);
}

/* Height Input */
.height-input-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.height-imperial,
.height-metric {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.height-input {
  width: 80px;
  height: 48px;
  padding: 0 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.125rem;
  text-align: center;
  transition: all var(--transition);
}

.height-input-full {
  width: 100%;
  height: 48px;
  padding: 0 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.125rem;
  text-align: center;
  transition: all var(--transition);
}

.height-input:focus,
.height-input-full:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.height-label {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  min-width: 30px;
}

/* ================================
   Activity Grid
   ================================ */

.activity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.activity-card {
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.activity-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.activity-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}

.activity-card.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.activity-card.active::before {
  opacity: 0.1;
}

.activity-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}

.activity-name {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
}

.activity-desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

/* ================================
   Goal Grid
   ================================ */

.goal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.goal-card {
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.goal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.goal-card:hover {
  border-color: var(--accent-dim);
  transform: scale(1.05);
}

.goal-card.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.goal-card.active::before {
  opacity: 0.1;
}

.goal-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

.goal-name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
}

.goal-modifier {
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
  position: relative;
  z-index: 1;
}

/* ================================
   Body Fat Method Selection
   ================================ */

.optional-label {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  font-weight: 400;
  font-family: var(--font-body);
  text-transform: none;
}

.bf-method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.bf-method-card {
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.bf-method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.bf-method-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}

.bf-method-card.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.bf-method-card.active::before {
  opacity: 0.1;
}

.bf-method-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}

.bf-method-name {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
}

.bf-method-desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

/* ================================
   Measurement Cards
   ================================ */

.measurements-card {
  animation: slideDown 0.4s ease-out;
}

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

.slide-down-enter-active {
  animation: slideDown 0.4s ease-out;
}

.slide-down-leave-active {
  animation: slideDown 0.3s ease-out reverse;
}

.measurement-instructions {
  display: flex;
  gap: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.instruction-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.instruction-content p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.instruction-content strong {
  color: var(--text-primary);
}

.measurement-diagram {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--bg-input);
  border-radius: 12px;
}

.body-diagram {
  max-width: 200px;
  height: auto;
}

.measurement-tip {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
  font-style: italic;
}

.skinfold-readings {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.skinfold-input {
  width: 80px;
  height: 48px;
  padding: 0 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  text-align: center;
  transition: all var(--transition);
}

.skinfold-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.skinfold-input::placeholder {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* ================================
   Calculate Button
   ================================ */

.calculate-btn {
  width: 100%;
  padding: 1.5rem 3rem;
  background: var(--accent);
  border: none;
  border-radius: 12px;
  color: var(--bg-dark);
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin: 2rem 0;
  box-shadow: var(--shadow-accent);
  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:not(:disabled) {
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(0, 255, 136, 0.5);
}

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

.calculate-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.calculate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.calculating-text {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.spinner-small {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(10, 10, 10, 0.3);
  border-top-color: var(--bg-dark);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ================================
   Results Section
   ================================ */

.results-section {
  animation: resultsSlideUp 0.8s ease-out;
}

@keyframes resultsSlideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.results-fade-enter-active {
  animation: resultsSlideUp 0.8s ease-out;
}

.results-fade-leave-active {
  animation: resultsSlideUp 0.5s ease-out reverse;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  animation: metricPop 0.6s ease-out backwards;
}

.metric-card:nth-child(1) { animation-delay: 0.2s; }
.metric-card:nth-child(2) { animation-delay: 0.3s; }
.metric-card:nth-child(3) { animation-delay: 0.4s; }

@keyframes metricPop {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.metric-card.primary {
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.metric-card.accent {
  border-color: var(--accent-dim);
}

.metric-card.body-fat-card {
  border-color: var(--carbs);
}

.metric-card.body-fat-card .metric-value {
  color: var(--carbs);
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.metric-card.primary .metric-value {
  font-size: 3rem;
}

.metric-unit {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Macro Card */
.macro-card {
  animation-delay: 0.5s !important;
}

.macro-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.macro-preset-selector {
  position: relative;
}

.preset-select {
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23808080' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

.preset-select:hover {
  border-color: var(--accent-dim);
}

.preset-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Macro Bars */
.macro-bars {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.macro-item {
  animation: macroSlideIn 0.6s ease-out backwards;
}

.macro-item:nth-child(1) { animation-delay: 0.6s; }
.macro-item:nth-child(2) { animation-delay: 0.7s; }
.macro-item:nth-child(3) { animation-delay: 0.8s; }

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

.macro-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.macro-name {
  font-weight: 600;
  color: var(--text-primary);
  text-transform: capitalize;
}

.macro-amounts {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
}

.macro-amounts strong {
  color: var(--text-primary);
  font-size: 1rem;
}

.macro-cals {
  color: var(--text-tertiary);
}

.macro-bar-container {
  height: 32px;
  background: var(--bg-input);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.macro-bar {
  height: 100%;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 1rem;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.macro-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.2) 50%, 
    transparent 100%);
  animation: shimmer-bar 2s linear infinite;
}

@keyframes shimmer-bar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.macro-bar.protein {
  background: linear-gradient(90deg, var(--protein) 0%, rgba(0, 255, 136, 0.7) 100%);
}

.macro-bar.carbs {
  background: linear-gradient(90deg, var(--carbs) 0%, rgba(59, 130, 246, 0.7) 100%);
}

.macro-bar.fat {
  background: linear-gradient(90deg, var(--fat) 0%, rgba(255, 107, 53, 0.7) 100%);
}

.macro-percentage {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bg-dark);
  position: relative;
  z-index: 1;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.action-btn {
  flex: 1;
  min-width: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: var(--bg-dark);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.action-btn.secondary {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.action-btn.secondary:hover {
  border-color: var(--accent);
  background: var(--bg-input);
}

.action-btn svg {
  flex-shrink: 0;
}

/* Saved Indicator */
.saved-indicator {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: var(--accent);
  color: var(--bg-dark);
  border-radius: 8px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: slideInRight 0.5s ease-out;
  z-index: 1000;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.3s;
}

.fade-enter,
.fade-leave-to {
  opacity: 0;
}

/* ================================
   Footer
   ================================ */

.footer {
  text-align: center;
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer p {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  margin: 0.25rem 0;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.footer a:hover {
  color: var(--accent-dim);
  text-decoration: underline;
}

.footer-note {
  font-size: 0.75rem;
  font-style: italic;
}

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

@media (max-width: 768px) {
  .tdee-calculator {
    padding: 1.5rem 1rem;
  }
  
  .header {
    margin-bottom: 2rem;
    padding: 1rem 0;
  }
  
  .logo-text,
  .logo-gradient {
    font-size: 2rem;
  }
  
  .card {
    padding: 1.5rem;
  }
  
  .card-title {
    font-size: 1.5rem;
  }
  
  .activity-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
  
  .goal-grid {
    grid-template-columns: 1fr;
  }
  
  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .metric-value {
    font-size: 2rem;
  }
  
  .metric-card.primary .metric-value {
    font-size: 2.5rem;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .action-btn {
    min-width: 100%;
  }
  
  .saved-indicator {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
  }
}

@media (max-width: 480px) {
  .logo-text,
  .logo-gradient {
    font-size: 1.75rem;
  }
  
  .activity-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .height-imperial,
  .height-metric {
    flex-wrap: wrap;
  }
  
  .height-input {
    width: 100%;
  }
  
  .macro-amounts {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
  }
}

/* ================================
   Print Styles
   ================================ */

@media print {
  body {
    background: white;
    color: black;
  }
  
  .header,
  .disclaimer-card,
  .calculate-btn,
  .action-buttons,
  .footer {
    display: none;
  }
  
  .card {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}