/* ============================================
   ThoughtDump - Premium Design System
   Apple-style calm, dark, glassmorphic
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Colors - Dark Premium Palette */
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-tertiary: #1a1a1d;
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  --bg-glass-active: rgba(255, 255, 255, 0.08);
  
  /* Text Colors */
  --text-primary: #f5f5f7;
  --text-secondary: rgba(245, 245, 247, 0.7);
  --text-tertiary: rgba(245, 245, 247, 0.5);
  --text-muted: rgba(245, 245, 247, 0.3);
  
  /* Accent Colors - Calm & Grounding */
  --accent-calm: #7c9885;
  --accent-calm-glow: rgba(124, 152, 133, 0.3);
  --accent-warm: #c4a77d;
  --accent-warm-glow: rgba(196, 167, 125, 0.3);
  --accent-soft: #8b7ea6;
  --accent-soft-glow: rgba(139, 126, 166, 0.3);
  --accent-ocean: #6b8fa3;
  --accent-ocean-glow: rgba(107, 143, 163, 0.3);
  
  /* Category Colors */
  --color-worries: #c47d7d;
  --color-worries-bg: rgba(196, 125, 125, 0.1);
  --color-tasks: #7d9fc4;
  --color-tasks-bg: rgba(125, 159, 196, 0.1);
  --color-ideas: #c4b87d;
  --color-ideas-bg: rgba(196, 184, 125, 0.1);
  --color-emotions: #a67dc4;
  --color-emotions-bg: rgba(166, 125, 196, 0.1);
  
  /* Mood Colors */
  --mood-calm: #7c9885;
  --mood-focused: #6b8fa3;
  --mood-reflective: #8b7ea6;
  --mood-energized: #c4a77d;
  
  /* Gradients */
  --gradient-dark: linear-gradient(180deg, #0a0a0b 0%, #111113 100%);
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(124, 152, 133, 0.15) 0%, transparent 50%);
  --gradient-subtle: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  
  /* Glass Effect */
  --glass-border: 1px solid rgba(255, 255, 255, 0.06);
  --glass-blur: blur(40px);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 800ms;
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-overlay: 400;
  --z-toast: 500;
  --z-transition: 1000;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--duration-slow) var(--ease-out-expo);
}

/* Mood-based background shifts */
body.mood-calm {
  --bg-primary: #0a0b0a;
}

body.mood-focused {
  --bg-primary: #0a0a0b;
}

body.mood-reflective {
  --bg-primary: #0b0a0c;
}

/* Page transition overlay */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: var(--z-transition);
  pointer-events: none;
  opacity: 0;
}

/* Main wrapper for page content */
.page-wrapper {
  opacity: 0;
  transform: translateY(20px);
}

/* Background ambient glow */
.ambient-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(124, 152, 133, 0.08) 0%, transparent 60%);
  animation: ambientPulse 8s ease-in-out infinite;
}

.ambient-glow::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(107, 143, 163, 0.05) 0%, transparent 60%);
  animation: ambientPulse 12s ease-in-out infinite reverse;
}

@keyframes ambientPulse {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--text-secondary);
  max-width: 65ch;
}

.text-large {
  font-size: 1.25rem;
  line-height: 1.7;
}

.text-small {
  font-size: 0.875rem;
}

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

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

/* Animated text reveal */
.text-reveal {
  overflow: hidden;
}

.text-reveal-inner {
  display: inline-block;
  transform: translateY(100%);
  opacity: 0;
}

/* Gradient text */
.text-gradient {
  background: linear-gradient(135deg, var(--accent-calm) 0%, var(--accent-ocean) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1400px;
}

section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-4xl);
}

.section-header p {
  margin: var(--space-lg) auto 0;
}

/* Flex utilities */
.flex {
  display: flex;
}

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

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  justify-content: space-between;
}

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

/* Grid utilities */
.grid {
  display: grid;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-lg) 0;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.nav.scrolled {
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity var(--duration-fast);
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-subtle);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  padding: var(--space-sm) 0;
  transition: color var(--duration-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-calm);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out-expo);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--duration-normal) var(--ease-out-expo);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-1px);
}

/* Desktop nav-menu - must be flex for proper layout */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: calc(var(--z-sticky) + 10);
  position: relative;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out-expo);
  transform-origin: center;
}

/* Hamburger animation */
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-out-expo);
    z-index: var(--z-sticky);
    padding: var(--space-xl);
  }
  
  .nav-menu.open {
    transform: translateX(0);
  }
  
  .nav-links {
    flex-direction: column;
    text-align: center;
    gap: var(--space-lg);
  }
  
  .nav-link {
    font-size: 1.5rem;
  }
  
  .nav-cta {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1rem;
  }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: scale(0.98);
}

/* Primary button */
.btn-primary {
  background: var(--accent-calm);
  color: #0a0a0b;
  box-shadow: 0 4px 20px var(--accent-calm-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-calm-glow);
}

/* Secondary/Glass button */
.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: var(--glass-border);
  backdrop-filter: blur(20px);
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-2px);
}

/* Ghost button */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

/* Button sizes */
.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

.btn-sm {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
}

/* Icon button */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ============================================
   Cards & Glass Panels
   ============================================ */
.card {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow);
}

.card-lg {
  padding: var(--space-2xl);
  border-radius: var(--radius-2xl);
}

.glass-panel {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-2xl);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 900px;
  position: relative;
  z-index: 1;
}

.hero-tagline {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--accent-calm);
  margin-bottom: var(--space-xl);
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Floating thought particles */
.thought-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.thought-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent-calm);
  border-radius: 50%;
  opacity: 0.3;
}

/* ============================================
   Thought Input Area
   ============================================ */
.thought-input-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.thought-textarea {
  width: 100%;
  min-height: 300px;
  padding: var(--space-xl);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-2xl);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.8;
  resize: none;
  outline: none;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.thought-textarea::placeholder {
  color: var(--text-muted);
}

.thought-textarea:focus {
  border-color: rgba(124, 152, 133, 0.3);
  box-shadow: 0 0 0 4px var(--accent-calm-glow);
}

/* Focus ring breathing animation */
.thought-textarea.breathing:focus {
  animation: focusBreathing 4s ease-in-out infinite;
}

@keyframes focusBreathing {
  0%, 100% { box-shadow: 0 0 0 4px var(--accent-calm-glow); }
  50% { box-shadow: 0 0 0 8px rgba(124, 152, 133, 0.15); }
}

/* Typing indicator */
.typing-indicator {
  position: absolute;
  bottom: var(--space-lg);
  right: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.typing-indicator.active {
  opacity: 1;
}

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-calm);
  border-radius: 50%;
  animation: typingPulse 1.4s ease-in-out infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingPulse {
  0%, 60%, 100% { transform: scale(1); opacity: 0.4; }
  30% { transform: scale(1.2); opacity: 1; }
}

/* Word density visualization */
.word-density-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-calm), var(--accent-ocean));
  border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
  transition: width var(--duration-slow) var(--ease-out-expo);
  opacity: 0.6;
}

/* ============================================
   Organization Mode Toggle
   ============================================ */
.mode-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: 20px;
}

.mode-option {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.mode-option.active {
  background: var(--bg-glass-active);
  color: var(--text-primary);
}

.mode-option:hover:not(.active) {
  color: var(--text-primary);
}

/* ============================================
   Thought Categories / Results
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

.category-card {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  opacity: 0;
  transform: translateY(20px);
}

.category-card.worries {
  border-left: 3px solid var(--color-worries);
}

.category-card.tasks {
  border-left: 3px solid var(--color-tasks);
}

.category-card.ideas {
  border-left: 3px solid var(--color-ideas);
}

.category-card.emotions {
  border-left: 3px solid var(--color-emotions);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.category-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.category-card.worries .category-icon { background: var(--color-worries-bg); color: var(--color-worries); }
.category-card.tasks .category-icon { background: var(--color-tasks-bg); color: var(--color-tasks); }
.category-card.ideas .category-icon { background: var(--color-ideas-bg); color: var(--color-ideas); }
.category-card.emotions .category-icon { background: var(--color-emotions-bg); color: var(--color-emotions); }

.category-title {
  font-size: 1rem;
  font-weight: 600;
}

.category-items {
  list-style: none;
}

.category-item {
  padding: var(--space-sm) 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  opacity: 0;
  transform: translateX(-10px);
}

.category-item:last-child {
  border-bottom: none;
}

/* Empty state */
.category-empty {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.875rem;
}

/* ============================================
   Mental Support Layer
   ============================================ */
.support-message {
  text-align: center;
  padding: var(--space-2xl);
  background: linear-gradient(180deg, transparent, var(--bg-glass));
  border-radius: var(--radius-2xl);
  margin-top: var(--space-3xl);
  opacity: 0;
  transform: translateY(20px);
}

.support-message h3 {
  font-size: 1.25rem;
  color: var(--accent-calm);
  margin-bottom: var(--space-md);
}

.support-message p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Gentle prompts */
.gentle-prompt {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--space-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.gentle-prompt:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

/* Calming banner */
.calming-banner {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  backdrop-filter: var(--glass-blur);
  color: var(--text-secondary);
  font-size: 0.875rem;
  z-index: var(--z-toast);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.calming-banner.visible {
  transform: translateX(-50%) translateY(0);
}

/* ============================================
   Focus Timer Tool
   ============================================ */
.timer-display {
  font-size: clamp(4rem, 15vw, 10rem);
  font-weight: 200;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  text-align: center;
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.timer-presets {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.timer-preset {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.timer-preset:hover,
.timer-preset.active {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

/* ============================================
   Reflection Section
   ============================================ */
.reflection-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.reflection-card {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.reflection-card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-4px);
}

.reflection-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border-radius: var(--radius-lg);
  color: var(--accent-calm);
}

.reflection-card h4 {
  margin-bottom: var(--space-sm);
}

.reflection-card p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================
   Streak & Stats
   ============================================ */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  padding: var(--space-lg);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-2xl);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Streak flame */
.streak-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-warm);
}

/* ============================================
   Loading States
   ============================================ */
.loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.loader-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-calm);
  border-radius: 50%;
  animation: loaderPulse 1.4s ease-in-out infinite;
}

.loader-dot:nth-child(2) { animation-delay: 0.2s; }
.loader-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes loaderPulse {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, var(--bg-glass) 25%, var(--bg-glass-hover) 50%, var(--bg-glass) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-3xl) 0;
  border-top: var(--glass-border);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.footer-link {
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--duration-fast);
}

.footer-link:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ============================================
   Scroll-based animations
   ============================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(40px);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
}

/* ============================================
   Feature Cards
   ============================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.feature-card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-calm-glow);
  border-radius: var(--radius-lg);
  color: var(--accent-calm);
  margin-bottom: var(--space-lg);
}

.feature-card h4 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-tertiary);
}

/* ============================================
   Philosophy / Storytelling Section
   ============================================ */
.philosophy-section {
  position: relative;
  overflow: hidden;
}

.philosophy-block {
  display: flex;
  align-items: center;
  gap: var(--space-4xl);
  padding: var(--space-4xl) 0;
}

.philosophy-block:nth-child(even) {
  flex-direction: row-reverse;
}

@media (max-width: 768px) {
  .philosophy-block,
  .philosophy-block:nth-child(even) {
    flex-direction: column;
    text-align: center;
  }
}

.philosophy-visual {
  flex: 1;
  position: relative;
  height: 300px;
}

.philosophy-content {
  flex: 1;
}

.philosophy-content h3 {
  margin-bottom: var(--space-md);
}

/* Visual thought representation */
.thought-cloud {
  position: relative;
  width: 100%;
  height: 100%;
}

.thought-blob {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-calm-glow);
  filter: blur(40px);
}

/* ============================================
   Privacy Badge
   ============================================ */
.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-glass);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.privacy-badge i {
  color: var(--accent-calm);
}

/* ============================================
   Overuse Warning
   ============================================ */
.overuse-warning {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 400px;
  padding: var(--space-2xl);
  background: var(--bg-tertiary);
  border: var(--glass-border);
  border-radius: var(--radius-2xl);
  text-align: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.overuse-warning.visible {
  opacity: 1;
  visibility: visible;
}

.overuse-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal);
}

.overuse-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

/* Tablet */
@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .philosophy-block {
    gap: var(--space-2xl);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --space-4xl: 3rem;
    --space-5xl: 4rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  section {
    padding: var(--space-3xl) 0;
  }
  
  .section-header {
    margin-bottom: var(--space-2xl);
  }
  
  .section-header p {
    font-size: 1rem;
  }
  
  /* Hero mobile */
  .hero {
    min-height: 100vh;
    min-height: 100dvh;
    padding: var(--space-3xl) var(--space-md);
    padding-top: 100px;
  }
  
  .hero-content {
    padding: 0 var(--space-sm);
  }
  
  .hero-tagline {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.75rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }
  
  /* Typography mobile */
  h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }
  
  h3 {
    font-size: clamp(1.25rem, 5vw, 1.5rem);
  }
  
  .text-large {
    font-size: 1rem;
  }
  
  /* Buttons mobile */
  .btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
  }
  
  .btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9375rem;
  }
  
  /* Cards mobile */
  .card {
    padding: var(--space-lg);
  }
  
  .card-lg {
    padding: var(--space-xl);
  }
  
  /* Feature grid mobile */
  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .feature-card {
    padding: var(--space-lg);
  }
  
  .feature-icon {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-md);
  }
  
  /* Philosophy blocks mobile */
  .philosophy-block,
  .philosophy-block:nth-child(even) {
    flex-direction: column;
    gap: var(--space-xl);
    padding: var(--space-2xl) 0;
  }
  
  .philosophy-visual {
    height: 200px;
    order: -1;
  }
  
  .philosophy-content {
    text-align: center;
  }
  
  .philosophy-content p {
    margin: 0 auto;
  }
  
  /* Categories grid mobile */
  .categories-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .category-card {
    padding: var(--space-lg);
  }
  
  /* Stats bar mobile */
  .stats-bar {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
  }
  
  /* Glass panels mobile */
  .glass-panel {
    padding: var(--space-xl) !important;
    border-radius: var(--radius-xl);
  }
  
  /* Textarea mobile */
  .thought-textarea {
    min-height: 250px;
    padding: var(--space-lg);
    font-size: 1rem;
  }
  
  /* Footer mobile */
  .footer-content {
    gap: var(--space-xl);
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
  }
  
  /* Calming banner mobile */
  .calming-banner {
    left: var(--space-md);
    right: var(--space-md);
    transform: translateX(0) translateY(100px);
    text-align: center;
  }
  
  .calming-banner.visible {
    transform: translateX(0) translateY(0);
  }
  
  /* Privacy badge mobile */
  .privacy-badge {
    font-size: 0.6875rem;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  :root {
    --space-3xl: 2rem;
    --space-4xl: 2.5rem;
    --space-5xl: 3rem;
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.375rem;
  }
  
  .hero {
    padding-top: 80px;
  }
  
  .hero-cta .btn {
    padding: var(--space-md) var(--space-lg);
  }
  
  .thought-textarea {
    min-height: 200px;
    font-size: 0.9375rem;
  }
  
  .timer-display {
    font-size: 3.5rem !important;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .action-buttons .btn {
    width: 100%;
  }
  
  .mode-toggle {
    flex-direction: column;
    width: 100%;
  }
  
  .mode-option {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible styles */
*:focus-visible {
  outline: 2px solid var(--accent-calm);
  outline-offset: 2px;
}

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

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .nav,
  .ambient-glow,
  .calming-banner {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}