/* ==========================================================================
   NutriPulse - Modern Glassmorphism Design System (Vanilla CSS with Variables)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #0b0f19;
  --bg-dark-secondary: #131b2e;
  --bg-card: rgba(22, 32, 54, 0.65);
  --bg-card-hover: rgba(30, 44, 73, 0.8);
  --bg-modal: #162036;
  --bg-input: rgba(11, 15, 25, 0.6);

  /* Accents & Status */
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);
  
  --protein-color: #8b5cf6;
  --carbs-color: #06b6d4;
  --fats-color: #f59e0b;
  --water-color: #3b82f6;

  --danger: #f43f5e;
  --danger-hover: #e11d48;
  --warning: #f59e0b;

  /* Typography */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Borders & Shadows */
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);
  --border-primary: rgba(16, 185, 129, 0.3);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 25px rgba(16, 185, 129, 0.2);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Outfit', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Main Container */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem 1rem;
}

/* Header Component */
.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary) 0%, #059669 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.logo-text h1 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Date Controller */
.date-controller {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(11, 15, 25, 0.4);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
}

.date-display-wrapper {
  position: relative;
  min-width: 140px;
  text-align: center;
}

.date-picker-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.date-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.date-label:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border-color: rgba(16, 185, 129, 0.4);
}

.btn-outline-primary:hover {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--primary);
}

.btn-water {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.btn-water:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.btn-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
  background: rgba(245, 158, 11, 0.25);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--danger);
  border-color: rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.icon-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.circle-btn {
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Glass Card Component */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.card:hover {
  border-color: var(--border-glass-hover);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-with-icon {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Badges */
.badge {
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--primary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.calorie-card {
  grid-column: span 4;
}

.macros-card {
  grid-column: span 5;
}

.water-card {
  grid-column: span 3;
}

/* Calorie Ring Gauge */
.calorie-ring-container {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0.5rem auto 1.25rem auto;
}

.calorie-ring {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.06);
  stroke-width: 14;
}

.ring-progress {
  fill: none;
  stroke: var(--primary);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: 515.22;
  stroke-dashoffset: 515.22;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1), stroke 0.3s ease;
  filter: drop-shadow(0 0 8px var(--primary-glow));
}

.ring-center-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ring-subtext {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.ring-main-number {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
}

.ring-unit {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Calorie Metrics Row */
.calorie-metrics-row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: rgba(11, 15, 25, 0.4);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.15rem;
}

.metric-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.metric-value small {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
}

.metric-divider {
  width: 1px;
  height: 28px;
  background: var(--border-glass);
}

.text-emerald {
  color: var(--primary) !important;
}

/* Macro Bars */
.macros-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.macro-header-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.macro-label-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.macro-indicator {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.indicator-protein { background: var(--protein-color); box-shadow: 0 0 10px rgba(139, 92, 246, 0.4); }
.indicator-carbs { background: var(--carbs-color); box-shadow: 0 0 10px rgba(6, 182, 212, 0.4); }
.indicator-fats { background: var(--fats-color); box-shadow: 0 0 10px rgba(245, 158, 11, 0.4); }

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

.macro-amount {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.progress-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(11, 15, 25, 0.6);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-glass);
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fill-protein { background: linear-gradient(90deg, #7c3aed, var(--protein-color)); }
.fill-carbs { background: linear-gradient(90deg, #0284c7, var(--carbs-color)); }
.fill-fats { background: linear-gradient(90deg, #d97706, var(--fats-color)); }

/* Water Visual Cups */
.water-target-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--carbs-color);
}

.water-cups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin: 1.2rem 0;
}

.water-cup {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: rgba(11, 15, 25, 0.5);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-muted);
}

.water-cup:hover {
  border-color: var(--carbs-color);
}

.water-cup.filled {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--carbs-color);
  color: var(--carbs-color);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.25);
  animation: cupPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes cupPop {
  0% { transform: scale(0.85); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.water-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
}

.water-actions .btn {
  flex: 1;
}

/* Quick Log Presets Section */
.presets-section {
  margin-bottom: 2rem;
}

.section-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title-row h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.section-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.presets-scroll-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.preset-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.preset-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.preset-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preset-emoji {
  font-size: 1.2rem;
}

.preset-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preset-calories {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
}

.preset-macros-tag {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

/* Meals Container */
.meals-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.meal-card {
  padding: 1.25rem;
}

.meal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-glass);
  margin-bottom: 0.75rem;
}

.meal-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.meal-emoji {
  font-size: 1.4rem;
}

.meal-title-group h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.meal-calories {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.meal-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 80px;
}

.empty-meal-state {
  text-align: center;
  padding: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

/* Logged Food Item Pill */
.food-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(11, 15, 25, 0.4);
  border: 1px solid var(--border-glass);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  animation: fadeInRow 0.25s ease-out;
}

@keyframes fadeInRow {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.food-item-row:hover {
  border-color: var(--border-glass-hover);
  background: rgba(11, 15, 25, 0.6);
}

.food-item-info {
  display: flex;
  flex-direction: column;
}

.food-item-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.food-item-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.food-item-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.food-item-calories {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
}

.delete-item-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
}

.delete-item-btn:hover {
  color: var(--danger);
  background: rgba(244, 63, 94, 0.15);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 8, 15, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  background: var(--bg-modal);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(0);
  transition: transform 0.25s ease;
}

.modal-overlay.hidden .modal-card {
  transform: translateY(20px);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.modal-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.modal-close-btn {
  font-size: 1.4rem;
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-row {
  display: flex;
  gap: 1rem;
}

.col-half {
  flex: 1;
}

.form-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.divider {
  border: none;
  border-top: 1px solid var(--border-glass);
  margin: 1.25rem 0;
}

.settings-section-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.data-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.cursor-pointer {
  cursor: pointer;
}

.hidden {
  display: none !important;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.toast {
  background: rgba(22, 32, 54, 0.95);
  border: 1px solid var(--border-glass-hover);
  backdrop-filter: blur(12px);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: toastSlideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-success { border-left: 4px solid var(--primary); }
.toast-info { border-left: 4px solid var(--carbs-color); }
.toast-error { border-left: 4px solid var(--danger); }

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

/* Responsive Layout Breakpoints */
@media (max-width: 992px) {
  .dashboard-grid {
    grid-template-columns: repeat(12, 1fr);
  }
  .calorie-card { grid-column: span 12; }
  .macros-card { grid-column: span 7; }
  .water-card { grid-column: span 5; }
  .meals-container { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
  }
  .date-controller {
    justify-content: space-between;
  }
  .header-actions {
    justify-content: space-between;
  }
  .macros-card, .water-card {
    grid-column: span 12;
  }
  .form-row, .form-row-3 {
    grid-template-columns: 1fr;
    flex-direction: column;
  }
  .data-actions-grid {
    grid-template-columns: 1fr;
  }
}