/* CSS Variables for consistent theming */
:root {
  --nature-green: #34c759;
  --dark-green: #207848;
  --light-green: #66e58b;
  --warning-amber: #ff9500;
  --error-red: #ff3b30;
  --success-green: #30d158;
  --info-blue: #007aff;
  
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --backdrop-blur: 20px;
  
  --text-primary: #1d1d1f;
  --text-secondary: #8e8e93;
  --text-tertiary: #c7c7cc;
  
  --shadow-light: 0 4px 20px rgba(52, 199, 89, 0.15);
  --shadow-medium: 0 8px 32px rgba(52, 199, 89, 0.2);
  --shadow-heavy: 0 12px 40px rgba(52, 199, 89, 0.25);
  
  --border-radius: 16px;
  --border-radius-large: 24px;
  --border-radius-small: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f2f2f7;
    --text-secondary: #8e8e93;
    --text-tertiary: #48484a;
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.15);
  }
}

/* Reset and base styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', system-ui, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, 
    rgba(102, 229, 139, 0.15) 0%, 
    rgba(52, 199, 89, 0.12) 35%, 
    rgba(32, 120, 72, 0.08) 100%);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-display: swap;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(52, 199, 89, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(102, 229, 139, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Accessibility utilities */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--nature-green);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: var(--border-radius-small);
  z-index: 1000;
}

.skip-link:focus {
  top: 10px;
}

/* Glass card component */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Header */
header {
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text {
  background: linear-gradient(135deg, var(--nature-green), var(--dark-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  text-align: center;
  position: relative;
  overflow: hidden;
  font-family: inherit;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn:disabled::before {
  display: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--nature-green), var(--dark-green));
  color: white;
  box-shadow: 0 4px 16px rgba(52, 199, 89, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(52, 199, 89, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-amber), #ff8c00);
  color: white;
  box-shadow: 0 4px 16px rgba(255, 149, 0, 0.3);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error-red), #ff1744);
  color: white;
  box-shadow: 0 4px 16px rgba(255, 59, 48, 0.3);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-small);
  transition: var(--transition);
  line-height: 1;
}

.btn-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

/* Main container */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl) 4rem;
}

/* Stats section */
.stats-section {
  margin-bottom: var(--spacing-2xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.stat-icon {
  font-size: 2rem;
  color: var(--nature-green);
}

.stat-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Instructions section */
.instructions {
  margin-bottom: var(--spacing-2xl);
}

.instructions .glass-card {
  padding: var(--spacing-xl);
}

.instructions h2 {
  color: var(--nature-green);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.instructions-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
  counter-reset: steps;
}

.instructions-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(52, 199, 89, 0.05);
  border-radius: var(--border-radius-small);
  border-left: 3px solid var(--nature-green);
  counter-increment: steps;
}

.instructions-list li::before {
  content: counter(steps);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  background: var(--nature-green);
  color: white;
  border-radius: 50%;
  font-weight: bold;
  font-size: 0.9rem;
  flex-shrink: 0;
}

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

.tip {
  padding: var(--spacing-md);
  background: rgba(255, 149, 0, 0.1);
  border: 1px solid rgba(255, 149, 0, 0.2);
  border-radius: var(--border-radius-small);
  color: var(--text-primary);
}

.keyboard-shortcuts {
  color: var(--text-secondary);
}

.keyboard-shortcuts kbd {
  display: inline-block;
  padding: 0.2em 0.4em;
  font-size: 0.85em;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  background: rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Timer section */
.timer-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.timer {
  text-align: center;
  position: relative;
}

.timer .glass-card {
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.timer-visual {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.timer-circle {
  position: relative;
  width: 300px;
  height: 300px;
}

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

.timer-track {
  fill: none;
  stroke: rgba(52, 199, 89, 0.1);
  stroke-width: 12;
}

.timer-progress {
  fill: none;
  stroke: var(--nature-green);
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease-out;
}

.timer-display {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.timer-display time {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  background: linear-gradient(135deg, var(--nature-green), var(--dark-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

.timer-controls {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-icon {
  font-size: 1.2rem;
}

/* Next reminder */
.next-reminder {
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(52, 199, 89, 0.1), rgba(102, 229, 139, 0.05));
  border: 1px solid rgba(52, 199, 89, 0.2);
  border-radius: 12px;
  color: var(--dark-green);
  font-weight: 500;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  max-width: 500px;
}

.next-reminder:empty {
  display: none;
}

.next-reminder.urgent {
  background: linear-gradient(135deg, rgba(255, 149, 0, 0.2), rgba(255, 140, 0, 0.1));
  border-color: rgba(255, 149, 0, 0.3);
  color: var(--warning-amber);
  animation: pulse 1s infinite;
}

.next-reminder-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  text-align: center;
}

.next-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.8;
}

.next-description {
  font-weight: 600;
}

.next-time {
  font-size: 0.9rem;
  opacity: 0.8;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.02); opacity: 0.9; }
}

/* Timer message */
.timer-message {
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-small);
  opacity: 0;
  transform: translateY(-10px);
  transition: var(--transition);
  font-weight: 500;
}

.timer-message.active {
  opacity: 1;
  transform: translateY(0);
  background: linear-gradient(135deg, rgba(52, 199, 89, 0.1), rgba(102, 229, 139, 0.05));
  border: 1px solid rgba(52, 199, 89, 0.2);
  color: var(--dark-green);
}

/* Share section */
.share-section {
  text-align: center;
  margin: var(--spacing-xl) 0;
}

/* Settings dialog */
.settings-dialog {
  position: fixed;
  padding: 0;
  border: none;
  border-radius: var(--border-radius-large);
  background: transparent;
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow: visible;
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Fallback for browsers without dialog support */
.settings-dialog:not([open]) {
  display: none;
}

.settings-dialog.show {
  display: flex;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
}

.settings-content {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-large);
  padding: var(--spacing-xl);
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: dialogFadeIn 0.3s ease-out;
}

@keyframes dialogFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.settings-header h2 {
  color: var(--nature-green);
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Forms */
.settings-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

fieldset {
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.02);
}

legend {
  font-weight: 600;
  color: var(--nature-green);
  padding: 0 var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.form-group label {
  font-weight: 500;
  color: var(--text-primary);
}

.form-help {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

input, select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-small);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  font-family: inherit;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--nature-green);
  box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.1);
}

input[type="number"] {
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Session duration */
.session-duration {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.duration-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

/* Checkbox styles */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  cursor: pointer;
  transition: var(--transition);
}

.checkbox-label:hover {
  background: rgba(52, 199, 89, 0.05);
  margin: 0 calc(-1 * var(--spacing-sm));
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-small);
}

input[type="checkbox"] {
  width: auto;
  min-width: 20px;
  height: 20px;
  accent-color: var(--nature-green);
  cursor: pointer;
}

.checkbox-text {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

.reminder-icon {
  font-size: 1.2rem;
}

.reminder-name {
  font-weight: 500;
}

.reminder-interval {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-left: auto;
}

/* Custom reminders */
.custom-reminders-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.custom-reminder-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--spacing-sm);
  align-items: center;
}

.reminder-text {
  flex: 1;
}

.reminder-minutes {
  width: 100px;
}

.remove-reminder {
  padding: var(--spacing-sm);
  min-width: auto;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Sound selection */
.sound-fieldset .form-group {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-sm);
  align-items: end;
}

.sound-select {
  grid-column: 1 / -1;
}

/* Settings actions */
.settings-actions {
  margin-top: var(--spacing-lg);
}

.settings-actions .btn {
  width: 100%;
}

/* Log section */
.log-section {
  margin-bottom: var(--spacing-2xl);
}

.log-section .glass-card {
  padding: var(--spacing-xl);
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.log-header h2 {
  color: var(--nature-green);
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0;
}

.log-content {
  position: relative;
}

.log-list {
  list-style: none;
  max-height: 400px;
  overflow-y: auto;
  padding-right: var(--spacing-sm);
}

.log-entry {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  background: rgba(52, 199, 89, 0.05);
  border: 1px solid rgba(52, 199, 89, 0.1);
  border-radius: var(--border-radius-small);
  font-size: 0.9rem;
  animation: slideIn 0.3s ease-out;
}

.log-time {
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.log-message {
  color: var(--text-primary);
}

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-tertiary);
  font-style: italic;
}

.log-list:not(:empty) + .empty-state {
  display: none;
}

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

/* Pro teaser */
.pro-teaser {
  text-align: center;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(255, 149, 0, 0.1), rgba(255, 140, 0, 0.05));
  border: 1px solid rgba(255, 149, 0, 0.2);
  border-radius: 12px;
  color: var(--warning-amber);
  font-weight: 500;
  margin-top: var(--spacing-md);
}

/* Feedback section */
.feedback-section {
  text-align: center;
  margin: var(--spacing-xl) 0;
  color: var(--text-secondary);
}

.feedback-link {
  color: var(--nature-green);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.feedback-link:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-top: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  margin-top: auto;
}

/* Toast notifications */
.toast-container {
  position: fixed;
  top: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  pointer-events: none;
}

.toast {
  background: white;
  border-radius: var(--border-radius-small);
  box-shadow: var(--shadow-medium);
  padding: var(--spacing-md) var(--spacing-lg);
  transform: translateX(calc(100% + var(--spacing-xl)));
  opacity: 0;
  transition: all 0.3s ease-out;
  pointer-events: auto;
  max-width: 350px;
}

@media (prefers-color-scheme: dark) {
  .toast {
    background: #1c1c1e;
  }
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toast-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.toast-message {
  font-weight: 500;
}

.toast-success {
  border-left: 4px solid var(--success-green);
}

.toast-error {
  border-left: 4px solid var(--error-red);
}

.toast-warning {
  border-left: 4px solid var(--warning-amber);
}

.toast-info {
  border-left: 4px solid var(--info-blue);
}

/* Save feedback toast */
.save-toast {
  position: fixed;
  top: var(--spacing-xl);
  right: var(--spacing-xl);
  background: var(--success-green);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-small);
  box-shadow: var(--shadow-medium);
  z-index: 1001;
  transform: translateX(calc(100% + var(--spacing-xl)));
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease-out;
  pointer-events: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.save-toast.show {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Running state */
body.running {
  --nature-green: #ff9500;
  --dark-green: #ff8c00;
}

body.running .timer-progress {
  stroke: var(--warning-amber);
}

/* Focus states */
*:focus {
  outline: 2px solid var(--nature-green);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

/* Scrollbar styles */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(52, 199, 89, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(52, 199, 89, 0.5);
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .btn::before {
    display: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.3);
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.3);
  }
  
  .glass-card {
    border-width: 2px;
  }
  
  input, select {
    border-width: 2px;
  }
}

/* Print styles */
@media print {
  body::before,
  header,
  .btn,
  .settings-dialog,
  .toast-container,
  .save-toast,
  #shareWrap {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .glass-card {
    background: white;
    border: 1px solid #ccc;
    box-shadow: none;
  }
}

/* Responsive design */
@media (max-width: 768px) {
  :root {
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.375rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }
  
  header h1 {
    font-size: 1.5rem;
  }
  
  .header-nav {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }
  
  .header-nav .btn {
    width: 100%;
    justify-content: center;
  }
  
  main {
    padding: 0 var(--spacing-md) var(--spacing-xl);
  }
  
  .timer-circle {
    width: 240px;
    height: 240px;
  }
  
  .timer-svg {
    stroke-width: 10;
  }
  
  .timer-display time {
    font-size: 2rem;
  }
  
  .timer-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .timer-controls .btn {
    width: 100%;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .settings-dialog {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
  }
  
  .settings-content {
    border-radius: 0;
    height: 100%;
    padding: var(--spacing-lg);
  }
  
  .duration-inputs {
    grid-template-columns: 1fr;
  }
  
  .custom-reminder-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }
  
  .reminder-minutes {
    width: 100%;
  }
  
  .remove-reminder {
    width: 100%;
  }
  
  .sound-fieldset .form-group {
    grid-template-columns: 1fr;
  }
  
  .toast-container {
    top: var(--spacing-md);
    right: var(--spacing-md);
    left: var(--spacing-md);
  }
  
  .toast {
    max-width: 100%;
  }
  
  .save-toast {
    top: var(--spacing-md);
    right: var(--spacing-md);
    left: var(--spacing-md);
    transform: translateY(-100px);
  }
  
  .save-toast.show {
    transform: translateY(0);
  }
  
  /* Better touch targets */
  .btn {
    min-height: 48px;
  }
  
  input, select {
    min-height: 48px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .checkbox-label {
    min-height: 48px;
  }
  
  input[type="checkbox"] {
    min-width: 24px;
    height: 24px;
  }
}

/* Small mobile screens */
@media (max-width: 480px) {
  header h1 {
    font-size: 1.25rem;
  }
  
  .logo-icon {
    font-size: 1.25rem;
  }
  
  .timer-circle {
    width: 200px;
    height: 200px;
  }
  
  .timer-display time {
    font-size: 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .instructions h2,
  .settings-header h2,
  .log-section h2 {
    font-size: 1.25rem;
  }
  
  .instructions-list li {
    font-size: 0.9rem;
    padding: var(--spacing-sm);
  }
  
  .btn {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
  }
  
  .reminder-interval {
    display: none;
  }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .header-content {
    flex-direction: row;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .header-nav {
    flex-direction: row;
    width: auto;
  }
  
  .timer-circle {
    width: 180px;
    height: 180px;
  }
  
  .timer-display time {
    font-size: 1.5rem;
  }
  
  .timer-controls {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .timer-controls .btn {
    width: auto;
    flex: 1;
    min-width: 120px;
  }
  
  .settings-dialog {
    width: 90%;
    height: 90%;
    max-width: 600px;
    max-height: 90vh;
    border-radius: var(--border-radius-large);
  }
  
  .settings-content {
    border-radius: var(--border-radius-large);
    height: auto;
  }
}

/* Large screens */
@media (min-width: 1200px) {
  .stats-grid {
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
  }
  
  .timer-circle {
    width: 320px;
    height: 320px;
  }
  
  .timer-display time {
    font-size: 3rem;
  }
  
  .timer-controls {
    gap: var(--spacing-lg);
  }
  
  .timer-controls .btn {
    min-width: 150px;
  }
}

/* Hover effects for desktop */
@media (hover: hover) {
  .stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
  }
  
  .log-entry:hover {
    background: rgba(52, 199, 89, 0.1);
    border-color: rgba(52, 199, 89, 0.2);
  }
  
  .btn {
    transition: all 0.2s ease-out;
  }
  
  .btn:hover {
    transform: translateY(-2px);
  }
  
  .btn:active {
    transform: translateY(0);
  }
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Utility classes */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.align-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* SOCIAL MEDIA SHARING */
/* Social Share Section */
.social-share-section {
  margin: var(--spacing-xl) 0;
  text-align: center;
}

.social-share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-small);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  color: white;
}

.social-btn span {
  font-size: 1.2rem;
}

.social-btn.twitter {
  background: #1da1f2;
}

.social-btn.twitter:hover {
  background: #1a91da;
  transform: translateY(-2px);
}

.social-btn.facebook {
  background: #1877f2;
}

.social-btn.facebook:hover {
  background: #166fe5;
  transform: translateY(-2px);
}

.social-btn.linkedin {
  background: #0077b5;
}

.social-btn.linkedin:hover {
  background: #006097;
  transform: translateY(-2px);
}

.social-btn.whatsapp {
  background: #25d366;
}

.social-btn.whatsapp:hover {
  background: #22c35e;
  transform: translateY(-2px);
}

/* Share Dialog */
.share-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1100;
  animation: fadeIn 0.3s ease-out;
}

.share-dialog {
  max-width: 500px;
  width: 90%;
  padding: var(--spacing-xl);
  animation: slideUp 0.3s ease-out;
}

.share-message {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-small);
  background: var(--glass-bg);
  color: var(--text-primary);
  resize: vertical;
  margin: var(--spacing-md) 0;
}

.share-dialog-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

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

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

/* Enhanced dark mode support */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, 
      rgba(52, 199, 89, 0.05) 0%, 
      rgba(52, 199, 89, 0.03) 35%, 
      rgba(32, 120, 72, 0.02) 100%),
      #0a0a0a;
  }
  
  .glass-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  input, select, textarea {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: #f2f2f7;
  }
  
  .timer-display time {
    filter: brightness(1.2);
  }
}

/* Break Activities Modal Styles - Add to end of styles.css */

.break-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.break-modal.active {
  opacity: 1;
  visibility: visible;
}

.break-modal-content {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-2xl);
  max-width: 500px;
  width: 90%;
  text-align: center;
  transform: scale(0.9) translateY(-20px);
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-heavy);
}

.break-modal.active .break-modal-content {
  transform: scale(1) translateY(0);
}

.break-type-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  animation: gentle-pulse 2s ease-in-out infinite;
}

.break-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--nature-green);
  margin-bottom: var(--spacing-md);
}

.break-instruction {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.break-timer-display {
  font-size: 3rem;
  font-weight: 700;
  color: var(--nature-green);
  margin-bottom: var(--spacing-lg);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  text-shadow: 0 2px 4px rgba(52, 199, 89, 0.2);
}

.break-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.break-actions .btn {
  min-width: 120px;
}

@keyframes gentle-pulse {
  0%, 100% { 
    transform: scale(1); 
    opacity: 1; 
  }
  50% { 
    transform: scale(1.05); 
    opacity: 0.9; 
  }
}

/* Break completion animation */
.break-complete .break-type-icon {
  animation: celebrate 0.6s ease-in-out 3;
}

@keyframes celebrate {
  0%, 100% { transform: scale(1) rotate(0deg); }
  25% { transform: scale(1.2) rotate(-10deg); }
  75% { transform: scale(1.2) rotate(10deg); }
}

/* Mobile responsiveness for break modal */
@media (max-width: 768px) {
  .break-modal-content {
    padding: var(--spacing-xl);
    width: 95%;
  }
  
  .break-type-icon {
    font-size: 3rem;
  }
  
  .break-title {
    font-size: 1.5rem;
  }
  
  .break-timer-display {
    font-size: 2.5rem;
  }
  
  .break-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .break-actions .btn {
    width: 100%;
    min-width: auto;
  }
}