/* --------------------------------------------------
   Break Reminder - Consolidated Design System (css/main.css)
   -------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  --font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains+Mono', monospace;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 14px;
  --border-radius-full: 9999px;
  
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme definition (Minimalistic Monochromatic Zinc/Slate) */
:root, html[data-theme="light"] {
  --bg-color: #fafafa;
  --bg-surface: #ffffff;
  --bg-surface-secondary: #f4f4f5;
  --border-color: #e4e4e7;
  --border-color-focus: #18181b;
  
  --text-primary: #18181b;
  --text-secondary: #71717a;
  --text-tertiary: #a1a1aa;
  
  --color-primary: #18181b;
  --color-primary-text: #ffffff;
  --color-primary-dark: #09090b;
  --color-secondary: #71717a;
  --color-danger: #e11d48;
  --color-warning: #d97706;
  --color-info: #2563eb;
  
  --gradient-primary: #18181b;
  --gradient-secondary: #71717a;
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px -2px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 24px -4px rgba(0,0,0,0.06);
  
  --glass-bg: rgba(250, 250, 250, 0.85);
  --glass-border: rgba(228, 228, 230, 0.8);
}

html[data-theme="dark"] {
  --bg-color: #09090b;
  --bg-surface: #0f0f12;
  --bg-surface-secondary: #18181b;
  --border-color: #27272a;
  --border-color-focus: #e4e4e7;
  
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-tertiary: #52525b;
  
  --color-primary: #e4e4e7;
  --color-primary-text: #09090b;
  --color-primary-dark: #ffffff;
  --color-secondary: #a1a1aa;
  --color-danger: #f43f5e;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  --gradient-primary: #e4e4e7;
  --gradient-secondary: #a1a1aa;
  
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  
  --glass-bg: rgba(9, 9, 11, 0.9);
  --glass-border: rgba(39, 39, 42, 0.8);
}

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

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

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.8;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-xxl);
  }
}

/* Header & Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--spacing-md) 0;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-primary);
  text-decoration: none;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background-color: var(--bg-surface-secondary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text-primary);
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  margin: 5px 0;
  transition: all var(--transition-normal);
}

/* Theme Toggle Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary) !important;
  color: var(--color-primary-text) !important;
  border: 1px solid var(--border-color) !important;
}

.btn-primary:hover {
  opacity: 0.9 !important;
}

.btn-secondary {
  background-color: var(--bg-surface-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

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

.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
}

.btn-danger:hover {
  filter: brightness(0.9);
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--border-radius-full);
}

.btn-small {
  padding: 4px 10px;
  font-size: 0.8rem;
  border-radius: var(--border-radius-sm);
}

.btn-xs {
  padding: 2px 6px;
  font-size: 0.75rem;
  border-radius: 4px;
}

/* Card layout */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

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

.card-title-small {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Notification Alert Banner */
.notification-alert-box {
  background-color: rgba(14, 165, 233, 0.1);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.alert-message {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.alert-btn {
  padding: 6px 12px;
  font-size: 0.8rem;
}

/* Views & Routing system */
.tab-view {
  display: none;
  animation: fadeIn var(--transition-normal) forwards;
}

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

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

/* Typography elements */
h1 {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

h2.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
}

/* Page Header Card */
.page-header-card {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.page-header-card h1 {
  color: var(--text-primary);
}

.page-header-card .subtitle {
  color: var(--text-secondary);
}

/* 1. TIMER GRID DESIGN */
.timer-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 850px) {
  .timer-layout-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1200px) {
  .timer-layout-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.timer-main-column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.wellness-tip-card {
  padding: var(--spacing-md) var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.timer-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-lg);
}

.timer-container {
  position: relative;
  width: 220px;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.timer-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-bg-circle {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 4;
}

.timer-progress-circle {
  fill: none;
  stroke: var(--text-primary);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 816.8;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.1s linear, stroke var(--transition-normal);
}

.timer-progress-circle.break-mode {
  stroke: var(--text-secondary);
}

.timer-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 5;
}

.timer-time {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.timer-status {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.text-gradient-work {
  color: var(--color-primary);
}

.text-gradient-break {
  color: var(--color-secondary);
}

.timer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.timer-controls {
  display: flex;
  gap: var(--spacing-md);
  width: 100%;
  max-width: 320px;
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.timer-controls .btn {
  flex: 1;
}



.timer-schedule-info {
  display: flex;
  justify-content: space-around;
  width: 100%;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-md);
}

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

.schedule-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  font-weight: 600;
}

.schedule-val {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Sidebar Grid & Settings Forms */
.timer-sidebar-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.timer-sidebar-grid > .card:first-child {
  flex: 1;
}

.settings-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm) var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.form-group.span-two {
  grid-column: span 2;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  font-family: inherit;
  font-size: 0.88rem;
  padding: var(--spacing-sm);
  background-color: var(--bg-surface-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-color-focus);
}

.volume-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: 4px;
}

.volume-slider {
  flex-grow: 1;
  appearance: none;
  height: 6px;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-full);
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
}

.file-input-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background-color: var(--bg-surface-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-sm);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
}

.custom-audio-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.form-submit-row {
  grid-column: span 2;
  display: flex;
  justify-content: flex-end;
  margin-top: var(--spacing-xs);
}

.highlight-card {
  border: 1px solid var(--color-secondary);
  background-color: rgba(16, 185, 129, 0.05);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.micro-workout-header {
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
}

.micro-workout-body {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.micro-workout-graphic {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-sm);
  padding: 4px;
}

.micro-workout-title {
  font-size: 0.9rem;
  font-weight: 700;
}

.micro-workout-instructions {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 2px;
}

/* 2. STRETCHES VIEW DESIGN */
.stretches-layout-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.exercise-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.exercise-item-card {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.exercise-item-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.exercise-graphic {
  width: 50px;
  height: 50px;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-sm);
  padding: 4px;
  flex-shrink: 0;
}

.exercise-graphic svg {
  width: 100%;
  height: 100%;
}

.exercise-name {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.exercise-meta {
  display: flex;
  gap: 6px;
}

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--border-radius-full);
}

.badge-primary {
  background-color: rgba(14, 165, 233, 0.15);
  color: var(--color-primary);
}

.badge-secondary {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-secondary);
}

/* 3. TOOLS / CALCULATORS DESIGN */
.tools-grid-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 800px) {
  .tools-grid-layout {
    grid-template-columns: 1fr 1fr;
  }
}

.tool-card {
  display: flex;
  flex-direction: column;
}

.tool-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.tool-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm) var(--spacing-md);
}

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

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
  background-color: var(--bg-surface-secondary);
  padding: 10px;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.quiz-option-label:hover {
  border-color: var(--border-color);
  color: var(--text-primary);
}

.tool-results {
  display: none;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  animation: fadeIn var(--transition-normal) forwards;
}

.tool-results.active {
  display: block;
}

.results-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-sm);
}

.stat-summary-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-weight: 600;
}

.results-highlight {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.results-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: var(--spacing-md);
}

/* Timeline schedule planner */
.timeline-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-sm);
}

.timeline-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  background-color: var(--bg-surface-secondary);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  max-height: 220px;
  overflow-y: auto;
}

.timeline-item {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  font-size: 0.82rem;
  padding: 4px;
}

.timeline-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.timeline-dot.active-work {
  background-color: var(--color-primary);
}

.timeline-dot.active-break {
  background-color: var(--color-secondary);
}

.timeline-time {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  width: 70px;
  flex-shrink: 0;
}

.timeline-content {
  color: var(--text-secondary);
}

/* Risk gauge styling */
.risk-gauge-container {
  height: 8px;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-full);
  overflow: hidden;
  margin-bottom: 4px;
}

.risk-gauge-fill {
  height: 100%;
  width: 0;
  transition: width var(--transition-slow) ease-in-out;
}

.gauge-low { background-color: var(--color-secondary); }
.gauge-medium { background-color: var(--color-warning); }
.gauge-high { background-color: var(--color-danger); }

.gauge-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

/* 4. GUIDES ACCORDION DESIGN */
.guides-accordion-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-surface);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
}

.accordion-header:hover {
  background-color: var(--bg-surface-secondary);
}

.accordion-header .chevron {
  transition: transform var(--transition-normal);
  color: var(--text-secondary);
}

.accordion-item.open .accordion-header .chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out;
}

.accordion-item.open .accordion-content {
  max-height: 800px;
}

.accordion-inner {
  padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
  font-size: 0.92rem;
  line-height: 1.6;
}

.accordion-inner h3 {
  font-size: 1rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.accordion-inner ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-item {
  margin-bottom: var(--spacing-md);
}

.faq-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
}

/* Modal Styling */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(9, 13, 22, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

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

.modal-header-row h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.exercise-drawer-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.exercise-drawer-graphic {
  width: 100px;
  height: 100px;
  margin: 0 auto;
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm);
}

.exercise-drawer-graphic svg {
  width: 100%;
  height: 100%;
}

.exercise-drawer-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background-color: var(--bg-surface-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
}

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

.meta-field span {
  font-weight: 700;
  color: var(--text-primary);
}

.exercise-steps {
  margin-left: var(--spacing-md);
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Footer style */
.footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 600px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand h3 {
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer-brand p {
  font-size: 0.82rem;
  color: var(--text-tertiary);
}

.footer-links-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-links-list a {
  color: var(--text-secondary);
  font-size: 0.82rem;
  text-decoration: none;
}

.footer-links-list a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-align: center;
}

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-bottom-links a {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-decoration: none;
}

/* Animations for SVG graphics */
.anim-target-head {
  transform-origin: 100px 115px;
  animation: headTilt 4s ease-in-out infinite alternate;
}

@keyframes headTilt {
  0% { transform: rotate(-5deg); }
  100% { transform: rotate(5deg); }
}

.anim-target-shoulder {
  animation: rollShoulders 3s ease-in-out infinite;
}

@keyframes rollShoulders {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.anim-target-wrist {
  transform-origin: 100px 90px;
  animation: flexWrist 3s ease-in-out infinite alternate;
}

@keyframes flexWrist {
  0% { transform: rotate(-10deg); }
  100% { transform: rotate(10deg); }
}

.anim-target-pupil {
  animation: gazeShift 5s ease-in-out infinite alternate;
}

@keyframes gazeShift {
  0% { transform: translate(-3px, -2px); }
  50% { transform: translate(3px, 2px); }
  100% { transform: translate(0, 0); }
}

.anim-target-focus-dot {
  animation: distanceFocus 4s ease-in-out infinite alternate;
}

@keyframes distanceFocus {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(0.4); opacity: 0.5; }
}

.anim-target-squat-torso {
  animation: squatMotion 4s ease-in-out infinite alternate;
}

@keyframes squatMotion {
  0% { transform: translateY(0); }
  100% { transform: translateY(12px); }
}

/* Accessibility and Mobile */
@media (max-width: 600px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-sm);
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }
  
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* SEO Rich Info Section */
.seo-info-card {
  margin-top: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
}

.seo-card-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.seo-lead {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 90ch;
  margin-bottom: var(--spacing-lg);
}

.seo-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-sm);
}

@media (min-width: 768px) {
  .seo-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.seo-feature-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background-color: var(--bg-surface-secondary);
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.seo-feature-item:hover {
  transform: translateY(-2px);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.seo-feature-icon {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.seo-feature-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.seo-feature-item p {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: 0;
}