/* ============================================
   LiftFuel - Workout & Nutrition Tracker
   Base Styles & Graphic Identity
   ============================================ */

/* --- CSS Custom Properties (Brand Identity) --- */
:root {
  /* Primary palette */
  --color-primary: #1B6B4A;
  --color-primary-light: #238C61;
  --color-primary-dark: #145236;
  --color-primary-bg: #E8F5EE;

  /* Accent */
  --color-accent: #E8853D;
  --color-accent-light: #F0A46A;
  --color-accent-dark: #C96A24;

  /* Neutrals */
  --color-bg: #F7F8FA;
  --color-surface: #FFFFFF;
  --color-border: #E2E5EA;
  --color-text: #1A1D23;
  --color-text-secondary: #5A6170;
  --color-text-muted: #8B919E;

  /* Feedback */
  --color-success: #22A75D;
  --color-warning: #E8853D;
  --color-error: #D94052;
  --color-info: #3B82C4;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-content {
  padding: var(--space-lg) 0 var(--space-2xl);
}

/* --- Header & Navigation --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
}

.logo span {
  color: var(--color-accent);
}

/* Desktop nav */
.main-nav {
  display: none;
}

.main-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.main-nav a .nav-icon {
  font-size: 1.1rem;
}

/* Mobile hamburger */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  z-index: 99;
  padding: var(--space-lg);
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.mobile-nav a .nav-icon {
  font-size: 1.25rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.6rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: var(--color-primary-light);
  color: white;
}

.btn-accent {
  background: var(--color-accent);
  color: white;
}
.btn-accent:hover {
  background: var(--color-accent-light);
  color: white;
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow var(--transition-fast);
}

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

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.card-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

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

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

/* --- Form Elements --- */
.input-group {
  position: relative;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 0.65rem 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

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

.search-bar {
  display: flex;
  gap: var(--space-sm);
}

.search-bar input {
  flex: 1;
}

/* --- Tags / Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  gap: var(--space-xs);
}

.badge-primary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.badge-accent {
  background: #FEF0E5;
  color: var(--color-accent-dark);
}

/* --- Filter Pills --- */
.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

.filter-pill {
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* --- Exercise Cards --- */
.exercise-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.exercise-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.exercise-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.exercise-card h3 {
  margin-bottom: var(--space-xs);
}

.exercise-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-xl);
  position: relative;
  transform: translateY(16px) scale(0.95);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  opacity: 0;
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  font-size: 1.25rem;
}

.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal h2 {
  margin-bottom: var(--space-md);
  padding-right: var(--space-xl);
}

.modal .detail-section {
  margin-bottom: var(--space-lg);
}

.modal .detail-section h4 {
  color: var(--color-text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.modal .detail-section p,
.modal .detail-section ul {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.modal .detail-section ul {
  list-style: disc;
  padding-left: var(--space-lg);
}

.modal .detail-section img {
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
}

/* --- Loading / Empty / Error States --- */
.state-message {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-muted);
}

.state-message .state-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.state-message p {
  font-size: 0.9rem;
  max-width: 320px;
  margin: 0 auto;
}

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* Inline link-style button (for retry links inside messages) */
.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: inherit;
  padding: 0;
  text-decoration: underline;
  font-family: inherit;
  transition: color var(--transition-base);
}

.btn-link:hover {
  color: var(--color-accent);
}

/* Filter loading state */
.filter-loading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: var(--space-xs) var(--space-md);
}

/* State message fade-in */
.state-message {
  animation: fadeIn 0.3s ease;
}

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

/* --- Dashboard Stat Cards --- */
.stat-card {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  animation: cardSlideUp 0.5s ease backwards;
}

.stat-card:nth-child(1) { animation-delay: 0s; }
.stat-card:nth-child(2) { animation-delay: 0.1s; }
.stat-card:nth-child(3) { animation-delay: 0.2s; }
.stat-card:nth-child(4) { animation-delay: 0.3s; }

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

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card .card-icon {
  transition: transform var(--transition-base);
}

.stat-card:hover .card-icon {
  transform: scale(1.15) rotate(5deg);
}

.stat-card .card-icon.green {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}
.stat-card .card-icon.orange {
  background: #FEF0E5;
  color: var(--color-accent);
}
.stat-card .card-icon.blue {
  background: #EBF2FA;
  color: var(--color-info);
}
.stat-card .card-icon.red {
  background: #FCECED;
  color: var(--color-error);
}

/* --- Section Headers --- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

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

/* --- Page Header --- */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* --- Quick Action List (Dashboard) --- */
.quick-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.quick-action-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  transition: all var(--transition-fast);
  text-decoration: none;
  color: var(--color-text);
}

.quick-action-item:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  transform: translateX(6px);
}

.quick-action-item .qa-icon {
  font-size: 1.25rem;
}

.quick-action-item .qa-text {
  font-weight: 500;
  font-size: 0.9rem;
}

/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: var(--space-xl) 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2xl);
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: 2px solid var(--color-border);
}

.tab-btn {
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--color-text-secondary);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* --- Workout Builder Forms --- */
.routine-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-row {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
  min-width: 0;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  font-family: inherit;
  font-size: 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

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

.form-group-narrow {
  flex: 0 0 80px;
}

/* --- Exercise List in Builder --- */
.exercise-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  gap: var(--space-sm);
}

.exercise-item-info {
  flex: 1;
  min-width: 0;
}

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

.exercise-item-detail {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.exercise-item .btn-remove {
  color: var(--color-error);
  font-size: 1.1rem;
  padding: var(--space-xs);
  flex-shrink: 0;
}

.exercise-item .btn-remove:hover {
  background: #FCECED;
  border-radius: var(--radius-sm);
}

/* --- Routine Cards --- */
.routine-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.routine-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.routine-card-header h3 {
  font-size: 1.05rem;
}

.routine-days {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.day-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.day-badge.active,
.day-badge.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.routine-exercises {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.routine-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* --- Session / Log Cards --- */
.session-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

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

.session-exercises {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.log-set-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.log-set-row .form-group {
  flex: 0 0 70px;
}

.log-set-row .set-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  width: 30px;
  text-align: center;
  flex-shrink: 0;
}

/* --- Nutrition / Meal Sections --- */
.food-search-container {
  margin-bottom: var(--space-lg);
}

.food-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  gap: var(--space-md);
}

.food-result-info {
  flex: 1;
  min-width: 0;
}

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

.food-result-brand {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.food-result-macros {
  display: flex;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.macro-label {
  font-weight: 600;
}

.meal-section {
  margin-bottom: var(--space-lg);
}

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

.meal-section-header h3 {
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.meal-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  gap: var(--space-sm);
}

.meal-item:hover {
  background: var(--color-bg);
}

.meal-item-name {
  font-size: 0.9rem;
  flex: 1;
  min-width: 0;
}

.meal-item-macros {
  display: flex;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

/* --- Macro Totals Bar --- */
.macro-totals {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.macro-total-item {
  text-align: center;
}

.macro-total-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.macro-total-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* --- Serving Size Input --- */
.serving-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  margin-top: var(--space-sm);
}

.serving-row input {
  width: 70px;
  padding: 0.4rem 0.5rem;
  font-family: inherit;
  font-size: 0.85rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

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

.serving-row span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Empty inline message --- */
.empty-inline {
  text-align: center;
  padding: var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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

/* Tablet (640px+) */
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .exercise-list { grid-template-columns: repeat(2, 1fr); }

  h1 { font-size: 2rem; }
}

/* Desktop (900px+) */
@media (min-width: 900px) {
  .menu-toggle { display: none; }

  .main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .exercise-list { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   Dashboard - Today's Routine
   ============================================ */

.routine-summary {
  padding: var(--space-md);
}

.routine-summary + .routine-summary {
  border-top: 1px solid var(--color-border);
}

.routine-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.routine-summary-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.routine-exercise-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.routine-exercise-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.routine-exercise-name {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-text);
}

.routine-exercise-detail {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ============================================
   Dashboard - Macro Progress
   ============================================ */

.macro-progress-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 600px) {
  .macro-progress-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.macro-progress-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.macro-progress-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.macro-progress-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

.macro-progress-value {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.progress-bar-track {
  width: 100%;
  height: 10px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

.macro-progress-percent {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: right;
}

/* ============================================
   Dashboard - Animated Progress Rings
   ============================================ */

.progress-rings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

@media (min-width: 600px) {
  .progress-rings-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.progress-ring-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transition: transform var(--transition-base);
}

.progress-ring-item:hover {
  transform: scale(1.08);
}

/* Pulse animation when goal is reached */
.progress-ring-item.goal-reached .progress-ring {
  animation: ringPulse 2s ease-in-out infinite;
}

@keyframes ringPulse {
  0%, 100% { filter: drop-shadow(0 0 0px transparent); }
  50% { filter: drop-shadow(0 0 8px rgba(34, 167, 93, 0.4)); }
}

.ring-container {
  position: relative;
  width: 100px;
  height: 100px;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-bg {
  fill: none;
  stroke: var(--color-border);
}

.progress-ring-fill {
  fill: none;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.ring-center-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-percent {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text);
}

.ring-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 8px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
}

.ring-placeholder-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.ring-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}

.ring-value {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.set-goals-prompt {
  transition: all var(--transition-base);
}

.set-goals-prompt:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   Rest Timer (Floating Widget)
   ============================================ */

.rest-timer {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  z-index: 50;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  animation: timerSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes timerSlideIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.rest-timer:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.rest-timer-ring {
  position: relative;
  width: 80px;
  height: 80px;
}

.timer-svg {
  transform: rotate(-90deg);
}

.timer-ring-bg {
  fill: none;
  stroke: var(--color-border);
}

.timer-ring-fill {
  fill: none;
  stroke: var(--color-primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.3s linear;
}

.rest-timer.running .timer-ring-fill {
  stroke: var(--color-accent);
}

.rest-timer.done .timer-ring-fill {
  stroke: var(--color-success);
  animation: timerDonePulse 0.6s ease 3;
}

@keyframes timerDonePulse {
  0%, 100% { stroke-width: 6; }
  50% { stroke-width: 9; }
}

.timer-display {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.rest-timer-presets {
  display: flex;
  gap: var(--space-xs);
}

.timer-preset-btn {
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.timer-preset-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.timer-preset-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.timer-stop-btn {
  padding: 0.3rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--color-error);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.timer-stop-btn:hover {
  background: #c4313f;
}

/* ============================================
   Dashboard - Recent Activity
   ============================================ */

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.activity-item + .activity-item {
  border-top: 1px solid var(--color-border);
}

.activity-icon {
  font-size: 1.3rem;
  line-height: 1;
  flex-shrink: 0;
  padding-top: 2px;
}

.activity-info {
  flex: 1;
  min-width: 0;
}

.activity-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}

.activity-detail {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.activity-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}