/**
 * Base CSS - Theme-agnostic styles and CSS custom properties
 */

/* CSS Custom Properties for Dynamic Theming */
:root {
  /* Theme colors - will be overridden by theme engine */
  --theme-primary: #38bdf8;
  --theme-secondary: #0ea5e9;
  --theme-text: #ffffff;
  --theme-textSecondary: #a3a3a3;
  --theme-accent: #f97316;
  --theme-streak-background: rgba(249, 115, 22, 0.1);
  --theme-success: #22c55e;
  --theme-danger: #dc2626;
  --theme-warning: #f59e0b;
  --theme-info: #3b82f6;
  
  /* Typography */
  --theme-typography-fontFamily: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --theme-typography-fontWeight: 400;
  --theme-typography-headingWeight: 700;
  
  /* Borders */
  --theme-border-width: 1px;
  --theme-border-style: solid;
  --theme-border-radius: 8px;
  --theme-border-color: #333333;
  
  /* Shadows */
  --theme-shadow-primary: 0 4px 15px rgba(56, 189, 248, 0.4);
  --theme-shadow-secondary: 0 2px 8px rgba(0, 0, 0, 0.1);
  --theme-shadow-hover: 0 6px 20px rgba(56, 189, 248, 0.6);
  
  /* Background */
  --theme-background: linear-gradient(to top, #0f0f0f, #1a1a2e);
}

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

/* Body Base Styles */
body {
  font-family: var(--theme-typography-fontFamily);
  font-weight: var(--theme-typography-fontWeight);
  min-height: 100vh;
  padding: 20px;
  transition: background 0.5s, color 0.5s;
  position: relative;
  overflow-x: hidden;
  background: var(--theme-background);
  color: var(--theme-text);
}

/* Background Layers */
.stars, .clouds, .waves, .leaves, .petals, .snowflakes, .raindrops {
  position: fixed;
  top: 0; 
  left: 0;
  width: 100%; 
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

/* Stars */
.star {
  position: absolute;
  width: 2px; 
  height: 2px;
  background: white;
  border-radius: 50%;
  animation: twinkle 2s infinite alternate;
}

@keyframes twinkle {
  from { opacity: 0.2; }
  to { opacity: 1; }
}

/* Clouds */
.cloud {
  position: absolute;
  background: #fff;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  animation: float 60s linear infinite;
}

@keyframes float {
  from { transform: translateX(-200px); }
  to { transform: translateX(100vw); }
}

.cloud::before, .cloud::after {
  content: '';
  position: absolute;
  background: inherit;
  border-radius: 50%;
}

.cloud::before {
  width: 100%; 
  height: 100%;
  top: -20px; 
  left: 20px;
}

.cloud::after {
  width: 60%; 
  height: 60%;
  top: 10px; 
  left: -30px;
}

/* Waves */
.wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.2), transparent);
  border-radius: 50%;
  animation: wave-motion 12s ease-in-out infinite;
}

.wave:nth-child(2) {
  animation-delay: -4s;
  height: 80px;
  opacity: 0.6;
}

.wave:nth-child(3) {
  animation-delay: -8s;
  height: 60px;
  opacity: 0.4;
}

@keyframes wave-motion {
  0%, 100% { transform: translateX(-50%) translateY(0px); }
  50% { transform: translateX(-50%) translateY(-15px); }
}

/* Bubbles */
.bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(236, 254, 255, 0.6);
  animation: bubble-rise 6s linear infinite;
}

@keyframes bubble-rise {
  0% { transform: translateY(0) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100vh) scale(1); opacity: 0; }
}

/* Leaves */
.leaf {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #22c55e;
  border-radius: 0 100% 0 100%;
  animation: leaf-fall 8s linear infinite;
}

.leaf:nth-child(2n) { background: #16a34a; }
.leaf:nth-child(3n) { background: #15803d; }

@keyframes leaf-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(360deg); opacity: 0; }
}

/* Petals */
.petal {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #ec4899;
  border-radius: 50% 0 50% 0;
  animation: petal-fall 10s linear infinite;
}

.petal:nth-child(2n) { background: #db2777; }
.petal:nth-child(3n) { background: #be185d; }

@keyframes petal-fall {
  0% { transform: translateY(0) rotate(0deg) scale(1); opacity: 1; }
  50% { transform: translateY(50vh) rotate(180deg) scale(0.8); }
  100% { transform: translateY(100vh) rotate(360deg) scale(0.6); opacity: 0; }
}

/* Snowflakes */
.snowflake {
  position: absolute;
  color: #ffffff;
  font-size: 1em;
  animation: snowfall 10s linear infinite;
  text-shadow: 0 0 3px rgba(14, 165, 233, 0.5);
}

.snowflake:nth-child(2n) { font-size: 0.8em; animation-duration: 12s; }
.snowflake:nth-child(3n) { font-size: 1.2em; animation-duration: 8s; }
.snowflake:nth-child(4n) { font-size: 0.6em; animation-duration: 14s; }

@keyframes snowfall {
  0% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) translateX(100px) rotate(360deg); opacity: 0; }
}

/* Raindrops */
.raindrop {
  position: absolute;
  width: 2px;
  height: 15px;
  background: linear-gradient(to bottom, transparent, #3b82f6, transparent);
  border-radius: 0 0 50% 50%;
  animation: rainfall 1s linear infinite;
}

.raindrop:nth-child(2n) { height: 12px; animation-duration: 0.8s; }
.raindrop:nth-child(3n) { height: 18px; animation-duration: 1.2s; }

@keyframes rainfall {
  0% { transform: translateY(-20px) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(100vh) translateX(-50px); opacity: 0; }
}

/* Content container */
.container {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
.header { 
  text-align: center; 
  margin-bottom: 40px; 
}

.header h1 { 
  font-size: 2.5rem; 
  font-weight: var(--theme-typography-headingWeight); 
  margin-bottom: 4px;
  color: var(--theme-text);
}

.header h2 { 
  font-size: 1.4rem; 
  font-weight: 500; 
  margin-bottom: 16px; 
  margin-top: 8px;
  color: var(--theme-text);
}

.header p { 
  font-size: 1.1rem; 
  opacity: 0.8; 
  margin-bottom: 20px;
  color: var(--theme-textSecondary);
}

.daily-quote {
  font-style: italic;
  font-size: 0.95rem;
  opacity: 0.7;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.4;
  color: var(--theme-textSecondary);
}

.quote-text {
  display: block;
  margin-bottom: 4px;
}

.quote-author {
  font-size: 0.85rem;
  opacity: 0.6;
}

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  transition: all 0.5s ease;
  overflow: hidden;
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* Theme Dropdown */
.theme-dropdown {
  position: relative;
}

.theme-dropdown-toggle {
  width: 60px;
  height: 60px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  transition: all 0.3s ease;
  overflow: hidden;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.theme-dropdown-toggle:hover {
  transform: scale(1.1);
}

.current-theme-icon {
  width: 100%;
  height: 100%;
  position: relative;
}

.dropdown-arrow {
  position: absolute;
  bottom: 2px;
  right: 2px;
  font-size: 8px;
  opacity: 0.7;
  transition: transform 0.3s ease;
  color: var(--theme-text);
}

.theme-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.theme-dropdown-menu {
  position: absolute;
  top: 70px;
  right: 0;
  min-width: 200px;
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(15px);
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid var(--theme-border-color);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.theme-dropdown.open .theme-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.theme-dropdown-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid transparent;
  color: var(--theme-theme-dropdown-option-text);
  background: rgba(255, 255, 255, 0.05);
}

.theme-dropdown-option:hover {
  transform: translateX(4px);
  background: rgba(255, 255, 255, 0.1);
}

.theme-dropdown-option.active {
  border-color: var(--theme-primary);
}

.theme-dropdown-option .theme-preview {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
}

.theme-dropdown-option .theme-name {
  font-size: 0.9rem;
  font-weight: 500;
}

/* Top Info Areas */
.top-left-info {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  z-index: 2;
}

.top-right-info {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  z-index: 2;
}

/* Mobile Header */
.mobile-header {
  display: none;
}

.date-info {
  padding: 8px 16px;
  border-radius: var(--theme-border-radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.5s ease;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--theme-border-color);
}

.date-info:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
  box-shadow: var(--theme-shadow-secondary);
}

/* Theme Icons */
.sun {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff9c4, #ffeb3b 40%, #ff9800 70%, #f57c00);
  position: relative;
  box-shadow: 0 0 30px rgba(255, 193, 7, 0.8), 0 0 60px rgba(255, 193, 7, 0.4);
}

.sun::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 25%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 
    12px 5px 0 -2px rgba(255, 255, 255, 0.6),
    8px 15px 0 -3px rgba(255, 255, 255, 0.4);
}

.sun::after {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border-radius: 50%;
  background: conic-gradient(
    transparent 0deg,
    rgba(255, 193, 7, 0.3) 20deg,
    transparent 40deg,
    rgba(255, 193, 7, 0.3) 60deg,
    transparent 80deg,
    rgba(255, 193, 7, 0.3) 100deg,
    transparent 120deg,
    rgba(255, 193, 7, 0.3) 140deg,
    transparent 160deg,
    rgba(255, 193, 7, 0.3) 180deg,
    transparent 200deg,
    rgba(255, 193, 7, 0.3) 220deg,
    transparent 240deg,
    rgba(255, 193, 7, 0.3) 260deg,
    transparent 280deg,
    rgba(255, 193, 7, 0.3) 300deg,
    transparent 320deg,
    rgba(255, 193, 7, 0.3) 340deg,
    transparent 360deg
  );
  animation: rotate 20s linear infinite;
  z-index: -1;
}

.moon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 25%, #f5f5f5, #e8e8e8 40%, #d0d0d0 70%, #b8b8b8);
  position: relative;
  box-shadow: 0 0 20px rgba(245, 245, 245, 0.6), inset -8px -8px 0 rgba(180, 180, 180, 0.3);
}

.moon::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 30%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(160, 160, 160, 0.6);
  box-shadow: 
    15px 8px 0 -1px rgba(160, 160, 160, 0.4),
    8px 20px 0 -2px rgba(160, 160, 160, 0.5),
    25px 25px 0 -3px rgba(160, 160, 160, 0.3);
}

.moon::after {
  content: '';
  position: absolute;
  top: 10%;
  right: 15%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(160, 160, 160, 0.4);
  box-shadow: 
    -10px 15px 0 1px rgba(160, 160, 160, 0.3),
    -5px 25px 0 -1px rgba(160, 160, 160, 0.2);
}

.bubble-icon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.3) 30%, rgba(6, 182, 212, 0.8) 70%, rgba(14, 116, 144, 0.9));
  position: relative;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.4), inset -5px -5px 10px rgba(14, 116, 144, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.bubble-icon::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 20%;
  width: 12px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 
    18px 8px 0 -4px rgba(255, 255, 255, 0.7),
    6px 25px 0 -6px rgba(255, 255, 255, 0.5);
}

.bubble-icon::after {
  content: '';
  position: absolute;
  top: 60%;
  right: 20%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
}

.leaf-icon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #dcfce7, #22c55e 40%, #16a34a 70%, #15803d);
  position: relative;
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.6);
}

.leaf-icon::before {
  content: '';
  position: absolute;
  top: 25%;
  left: 25%;
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 0 100% 0 100%;
  box-shadow: 
    15px 8px 0 -2px rgba(255, 255, 255, 0.7),
    8px 18px 0 -3px rgba(255, 255, 255, 0.5);
}

.petal-icon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fdf2f8, #ec4899 40%, #db2777 70%, #be185d);
  position: relative;
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.6);
}

.petal-icon::before {
  content: '';
  position: absolute;
  top: 22%;
  left: 28%;
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50% 0 50% 0;
  box-shadow: 
    12px 6px 0 -1px rgba(255, 255, 255, 0.7),
    6px 15px 0 -2px rgba(255, 255, 255, 0.5),
    18px 18px 0 -3px rgba(255, 255, 255, 0.4);
}

.snowflake-icon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffffff, #f0f9ff 40%, #dbeafe 70%, #bfdbfe);
  position: relative;
  box-shadow: 0 0 20px rgba(14, 165, 233, 0.3), inset -4px -4px 8px rgba(59, 130, 246, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.snowflake-icon::before {
  content: '';
  position: absolute;
  top: 25%;
  left: 30%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.3);
  box-shadow: 
    12px 8px 0 -1px rgba(59, 130, 246, 0.2),
    6px 18px 0 -2px rgba(59, 130, 246, 0.25),
    18px 20px 0 -3px rgba(59, 130, 246, 0.15);
}

.snowflake-icon::after {
  content: '';
  position: absolute;
  top: 15%;
  left: 20%;
  width: 10px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 
    15px 12px 0 -2px rgba(255, 255, 255, 0.7);
}

.raindrop-icon {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 25% 25%, rgba(147, 197, 253, 0.9), rgba(59, 130, 246, 0.8) 30%, rgba(29, 78, 216, 0.9) 70%, rgba(30, 58, 138, 0.95));
  position: relative;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5), inset -3px -3px 6px rgba(29, 78, 216, 0.3);
  border: 2px solid rgba(147, 197, 253, 0.4);
  overflow: hidden;
}

.raindrop-icon::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 25%;
  width: 12px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 
    15px 8px 0 -3px rgba(255, 255, 255, 0.6),
    8px 20px 0 -4px rgba(255, 255, 255, 0.4);
}

.raindrop-icon::after {
  content: '';
  position: absolute;
  top: 60%;
  right: 20%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: 
    -8px -8px 0 -1px rgba(255, 255, 255, 0.3);
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Theme Preview Styles */
.theme-preview {
  border-radius: 50%;
  position: relative;
  overflow: hidden;
}

.starry-night-preview {
  background: linear-gradient(135deg, #0f0f0f, #1a1a2e);
}

.starry-night-preview::after {
  content: '✨';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.cloudy-day-preview {
  background: linear-gradient(135deg, #87ceeb, #fdfdfd);
}

.cloudy-day-preview::after {
  content: '☀️';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.ocean-preview {
  background: linear-gradient(135deg, #1e3a8a, #0c4a6e);
}

.ocean-preview::after {
  content: '🌊';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.forest-preview {
  background: linear-gradient(135deg, #064e3b, #166534);
}

.forest-preview::after {
  content: '🌲';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.cherry-blossom-preview {
  background: linear-gradient(135deg, #fdf2f8, #fce7f3);
}

.cherry-blossom-preview::after {
  content: '🌸';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.snow-preview {
  background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
}

.snow-preview::after {
  content: '❄️';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

.rain-preview {
  background: linear-gradient(135deg, #374151, #1f2937);
}

.rain-preview::after {
  content: '🌧️';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
}

/* Components reused */
.date-display { 
  border-radius: 12px; 
  padding: 16px; 
  text-align: center; 
  margin-bottom: 30px; 
}

.date-display h2 { 
  font-size: 1.2rem; 
  font-weight: 600; 
}

.add-habit { 
  display: flex; 
  gap: 16px; 
  margin-bottom: 40px; 
  padding: 20px;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.add-habit input { 
  flex: 1; 
  padding: 14px 18px; 
  border-radius: 10px; 
  font-size: 1rem; 
  border: 2px solid var(--theme-border-color); 
  transition: all 0.2s ease;
  background: transparent;
  color: var(--theme-text);
}

.add-habit input:focus {
  outline: none;
  transform: translateY(-1px);
  box-shadow: var(--theme-shadow-secondary);
  border-color: var(--theme-primary);
}

.add-habit input::placeholder {
  color: var(--theme-textSecondary);
  opacity: 0.7;
}

.add-btn { 
  padding: 12px 20px; 
  color: white; 
  border: none; 
  border-radius: 8px; 
  font-weight: 600; 
  cursor: pointer; 
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
  background: var(--theme-primary);
  box-shadow: var(--theme-shadow-primary);
}

.add-btn:hover { 
  transform: translateY(-2px);
  box-shadow: var(--theme-shadow-hover);
}

.add-btn::before {
  content: '';
  width: 14px;
  height: 14px;
  background: 
    linear-gradient(white, white) center/2px 14px no-repeat,
    linear-gradient(white, white) center/14px 2px no-repeat;
}

.progress-section { 
  margin-bottom: 30px; 
}

.progress-bar { 
  width: 100%; 
  height: 8px; 
  border-radius: 4px; 
  overflow: hidden; 
  margin-bottom: 8px;
  background: var(--theme-textSecondary);
  opacity: 0.3;
}

.progress-fill { 
  height: 100%; 
  transition: width 0.3s ease; 
  width: 0%;
  background: var(--theme-primary);
}

.progress-text { 
  text-align: center; 
  font-size: 0.9rem; 
  margin-bottom: 8px;
  color: var(--theme-textSecondary);
}

.streak-counter { 
  font-size: 0.85rem; 
  font-weight: 600; 
  padding: 6px 12px;
  border-radius: 20px;
  transition: all 0.3s ease;
  white-space: nowrap;
  box-shadow: var(--theme-shadow-secondary);
  background: var(--theme-accent);
  color: white;
}

.action-buttons { 
  display: flex; 
  gap: 12px; 
}

.reset-btn, .delete-all-btn { 
  flex: 1;
  padding: 10px 16px; 
  border: none; 
  border-radius: 8px; 
  font-weight: 600; 
  cursor: pointer; 
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.9rem;
}

.reset-btn { 
  background: #9ca3af; 
  color: white; 
}

.reset-btn:hover { 
  background: #6b7280; 
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.delete-all-btn { 
  background: var(--theme-danger); 
  color: white; 
  opacity: 0.8;
}

.delete-all-btn:hover { 
  background: #b91c1c; 
  opacity: 1;
  transform: translateY(-1px);
}

.reset-btn::before {
  content: '';
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  border-right-color: transparent;
}

.delete-all-btn::before {
  content: '';
  width: 12px;
  height: 14px;
  background: 
    linear-gradient(currentColor, currentColor) center top/8px 2px no-repeat,
    linear-gradient(currentColor, currentColor) center/6px 10px no-repeat;
  background-position: center 1px, center 4px;
}

.habit-item { 
  display: flex; 
  align-items: center; 
  gap: 16px; 
  padding: 16px; 
  border-radius: 8px; 
  margin-bottom: 12px; 
  transition: all 0.2s;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--theme-border-color);
  color: var(--theme-text);
}

.habit-checkbox { 
  width: 20px; 
  height: 20px; 
  border: 2px solid #666; 
  border-radius: 4px; 
  cursor: pointer; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  transition: all 0.2s; 
}

.habit-checkbox.checked { 
  background: var(--theme-success); 
  border-color: var(--theme-success); 
}

.habit-checkbox.checked::after { 
  content: '✓'; 
  color: white; 
  font-weight: bold; 
  font-size: 14px; 
}

.habit-text { 
  flex: 1; 
  font-size: 1rem;
  color: var(--theme-text);
}

.habit-streak {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgb(255, 155, 61);
  margin-left: 12px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--theme-streak-background);
}

.habit-item.completed .habit-text { 
  opacity: 0.5; 
  text-decoration: none; 
}

.delete-btn-container { 
  margin-left: 8px; 
}

.delete-btn { 
  background: none; 
  border: none; 
  cursor: pointer; 
  padding: 8px; 
  border-radius: 4px; 
  transition: all 0.2s;
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delete-btn:hover { 
  background: rgba(239, 68, 68, 0.1); 
}

.delete-btn::before,
.delete-btn::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 2px;
  background: #ef4444;
  border-radius: 1px;
}

.delete-btn::before { 
  transform: rotate(45deg); 
}

.delete-btn::after { 
  transform: rotate(-45deg); 
}

/* Bottom Actions */
.bottom-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 20px 0;
  padding: 0 20px;
}

.secondary-reset-btn, .secondary-delete-btn {
  padding: 8px 16px;
  border: 1px solid;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
  min-width: 80px;
}

.secondary-reset-btn {
  color: #6b7280;
  border-color: #d1d5db;
}

.secondary-reset-btn:hover {
  background: #f9fafb;
  border-color: #9ca3af;
  color: #4b5563;
}

.secondary-delete-btn {
  color: var(--theme-danger);
  border-color: #fca5a5;
}

.secondary-delete-btn:hover {
  background: #fef2f2;
  border-color: var(--theme-danger);
  color: #b91c1c;
}

.empty-state { 
  text-align: center; 
  padding: 60px 20px; 
}

.empty-state h3 { 
  font-size: 1.5rem; 
  margin-bottom: 12px; 
  opacity: 0.8;
  color: var(--theme-text);
}

.empty-state p { 
  font-size: 1.1rem; 
  opacity: 0.6; 
  line-height: 1.6;
  color: var(--theme-textSecondary);
}

.empty-state .emoji { 
  font-size: 3rem; 
  margin-bottom: 20px; 
  display: block;
}

.footer-info {
  text-align: center;
  margin-top: 30px;
  padding: 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.5;
}

.footer-info .reset-icon {
  display: inline-block;
  margin-right: 8px;
  font-size: 1.1rem;
}

.modal-overlay { 
  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: 1000; 
  opacity: 0; 
  visibility: hidden; 
  transition: all 0.3s ease; 
}

.modal-overlay.show { 
  opacity: 1; 
  visibility: visible; 
}

.modal { 
  border-radius: 12px; 
  padding: 24px; 
  max-width: 400px; 
  width: 90%; 
  transform: scale(0.9); 
  transition: transform 0.3s ease;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid var(--theme-border-color);
  color: var(--theme-text);
}

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

.modal h3 { 
  font-size: 1.2rem; 
  margin-bottom: 16px; 
  text-align: center;
  color: var(--theme-text);
}

.modal-buttons { 
  display: flex; 
  gap: 12px; 
  justify-content: center; 
}

.modal-btn { 
  padding: 10px 20px; 
  border: none; 
  border-radius: 6px; 
  font-weight: 600; 
  cursor: pointer; 
  transition: all 0.2s; 
  min-width: 80px; 
}

.modal-btn.cancel { 
  background: #6b7280; 
  color: #e5e5e5; 
}

.modal-btn.cancel:hover { 
  background: #4b5563; 
}

.modal-btn.confirm { 
  background: var(--theme-danger); 
  color: white; 
}

.modal-btn.confirm:hover { 
  background: #dc2626; 
}

.modal-btn.ok { 
  background: var(--theme-primary); 
  color: white; 
}

.modal-btn.ok:hover { 
  background: var(--theme-secondary); 
}

/* Completion Animation */
.completion-overlay {
  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: all 0.5s ease;
}

.completion-overlay.show {
  opacity: 1;
  visibility: visible;
}

.completion-content {
  text-align: center;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  transform: scale(0.8);
  transition: transform 0.5s ease;
  z-index: 2001;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--theme-border-color);
  color: var(--theme-text);
}

.completion-overlay.show .completion-content {
  transform: scale(1);
}

.completion-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  animation: bounce 1s infinite alternate;
}

.completion-content h2 {
  font-size: 2rem;
  margin-bottom: 10px;
  color: var(--theme-primary);
}

.completion-content p {
  font-size: 1.1rem;
  margin-bottom: 0;
  color: var(--theme-textSecondary);
}

@keyframes bounce {
  from { transform: translateY(0); }
  to { transform: translateY(-10px); }
}

/* Confetti */
.confetti {
  position: absolute;
  top: 0; 
  left: 0; 
  right: 0; 
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--theme-primary);
  animation: confetti-fall 3s linear infinite;
}

.confetti-piece:nth-child(2n) { background: var(--theme-danger); }
.confetti-piece:nth-child(3n) { background: var(--theme-success); }
.confetti-piece:nth-child(4n) { background: var(--theme-info); }
.confetti-piece:nth-child(5n) { background: var(--theme-warning); }

@keyframes confetti-fall {
  0% { transform: translateY(-100vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(360deg); opacity: 0; }
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  
  /* Mobile Header - DISABLED: Using desktop layout instead */
  .mobile-header {
    display: none !important;
  }
  
  /* Mobile header sections removed - no longer needed */
  
  /* Mobile: Refined header layout for better hierarchy */
  .top-left-info {
    top: 15px;
    left: 15px;
    right: 60px; /* Leave space for theme button */
    display: flex;
    justify-content: flex-start;
  }
  
  .top-right-info {
    top: 15px;
    right: 15px;
    left: auto;
  }
  
  .container {
    padding: 15px;
    padding-top: 70px; /* Space for refined header layout */
    max-width: 100%;
  }
  
  /* Header text */
  .header h1 {
    font-size: 2rem;
  }
  
  .header h2 {
    font-size: 1.2rem;
  }
  
  .header p {
    font-size: 1rem;
  }
  
  .daily-quote {
    font-size: 0.85rem;
    max-width: 100%;
  }
  
  /* Mobile adjustments for desktop header elements */
  .date-info {
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0.8;
    font-weight: 400;
  }
  
  .streak-counter {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 12px;
    white-space: nowrap;
  }
  
  .theme-dropdown-toggle {
    width: 36px;
    height: 36px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }
  
  .theme-dropdown-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  }
  
  .theme-dropdown-menu {
    min-width: 180px;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  }
  
  .theme-dropdown-option {
    padding: 8px;
  }
  
  .theme-dropdown-option .theme-preview {
    width: 20px;
    height: 20px;
  }
  
  .theme-dropdown-option .theme-name {
    font-size: 0.8rem;
  }
  
  /* Add habit section */
  .add-habit {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }
  
  .add-habit input {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9rem;
  }
  
  .add-btn {
    width: 100%;
    padding: 12px;
    justify-content: center;
  }
  
  /* Progress section */
  .progress-section {
    margin-bottom: 20px;
  }
  
  .progress-text {
    font-size: 0.85rem;
  }
  
  /* Habit items */
  .habit-item {
    padding: 12px;
    margin-bottom: 8px;
  }
  
  .habit-text {
    font-size: 0.9rem;
  }
  
  .habit-checkbox {
    width: 18px;
    height: 18px;
  }
  
  .delete-btn {
    width: 20px;
    height: 20px;
  }
  
  /* Bottom actions */
  .bottom-actions {
    flex-direction: column;
    gap: 8px;
    padding: 0 10px;
  }
  
  .secondary-reset-btn, .secondary-delete-btn {
    width: 100%;
    padding: 10px;
    font-size: 0.85rem;
  }
  
  /* Footer */
  .footer-info {
    font-size: 0.8rem;
    padding: 16px;
    margin-top: 20px;
  }
  
  /* Modals */
  .modal {
    width: 95%;
    max-width: 350px;
    padding: 20px;
  }
  
  .modal h3 {
    font-size: 1.1rem;
  }
  
  .modal-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
  
  /* Completion overlay */
  .completion-content {
    padding: 30px 20px;
    width: 90%;
    max-width: 350px;
  }
  
  .completion-icon {
    font-size: 3rem;
  }
  
  .completion-content h2 {
    font-size: 1.5rem;
  }
  
  .completion-content p {
    font-size: 1rem;
  }
  
  /* Empty state */
  .empty-state {
    padding: 40px 15px;
  }
  
  .empty-state h3 {
    font-size: 1.3rem;
  }
  
  .empty-state p {
    font-size: 1rem;
  }
  
  .empty-state .emoji {
    font-size: 2.5rem;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .header h1 {
    font-size: 1.8rem;
  }
  
  .header h2 {
    font-size: 1.1rem;
  }
  
  .daily-quote {
    font-size: 0.8rem;
  }
  
  .theme-dropdown-toggle {
    width: 40px;
    height: 40px;
  }
  
  .completion-content {
    padding: 25px 15px;
  }
  
  .completion-icon {
    font-size: 2.5rem;
  }
  
  .completion-content h2 {
    font-size: 1.3rem;
  }
}