/* ==========================================================================
   Photo Tracker CSS - Enhanced with Matching Color Scheme & Light Mode
   ========================================================================== */

/* CSS Custom Properties - Matching Dashboard Theme */
:root {
  /* Brand Colors - Matching Dashboard */
  --primary: #6a1b9a;
  --primary-light: #8e24aa;
  --primary-dark: #4a148c;
  --accent: #ff6f00;
  --accent-light: #ff8f00;
  --accent-dark: #e65100;

  /* Background Colors */
  --dark-bg: #1c1c1c;
  --darker-bg: #121212;
  --card-bg: #1e1e1e;
  --elevated-bg: #242424;
  --surface-bg: #2d2d2d;
  --surface-light: #3d3d3d;

  /* Text Colors */
  --text-color: #e0e0e0;
  --light-text: #b0b0b0;
  --muted-text: #757575;
  --disabled-text: #6c6c6c;

  /* Status Colors */
  --success: #4caf50;
  --success-light: #69f0ae;
  --warning: #ffc107;
  --warning-light: #ffff00;
  --error: #f44336;
  --error-light: #ff8a80;
  --info: #2196f3;

  /* Border & Effects */
  --border-light: rgba(255, 255, 255, 0.12);
  --border-radius: 8px;
  --border-radius-sm: 6px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;

  /* Shadows */
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  --card-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.25);
  --elevated-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography */
  --font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Light Mode Variables */
body.light-mode {
  --dark-bg: #f8fafc;
  --darker-bg: #ffffff;
  --card-bg: #ffffff;
  --elevated-bg: #ffffff;
  --surface-bg: #f1f5f9;
  --surface-light: #e2e8f0;
  --text-color: #1a202c;
  --light-text: #515c6f;
  --muted-text: #718096;
  --disabled-text: #a0aec0;
  --border-light: rgba(0, 0, 0, 0.08);
  --card-shadow: 0 4px 12px rgba(106, 27, 154, 0.08);
  --card-shadow-hover: 0 8px 25px rgba(106, 27, 154, 0.12);
  --elevated-shadow: 0 10px 30px rgba(106, 27, 154, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--dark-bg);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  background-image: radial-gradient(circle at 10% 20%, rgba(106, 27, 154, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(255, 111, 0, 0.05) 0%, transparent 25%);
  background-attachment: fixed;
  transition: all var(--transition);
}

/* Container */
.container {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 0;
}

/* Typography Enhancement */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5em;
  color: var(--text-color);
}

h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 1.8rem);
  position: relative;
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

h2::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 2px;
}

h3 {
  font-size: 1.4rem;
  color: var(--text-color);
}

p {
  margin-bottom: 1.5rem;
  color: var(--light-text);
  line-height: 1.6;
}

/* Enhanced Header & Navigation */
.tracker-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  padding: 0.75rem 1.5rem;
  box-shadow: 0 4px 20px rgba(106, 27, 154, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

body.light-mode .tracker-header {
  background: linear-gradient(90deg, #f2cfff, #ffe0b2);
  box-shadow: 0 4px 20px rgba(106, 27, 154, 0.1);
}

.tracker-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

body.light-mode .logo {
  color: var(--primary);
}

.logo:hover {
  transform: scale(1.02);
}

.logo img {
  height: 40px;
  width: 40px;
  border-radius: var(--border-radius);
  object-fit: cover;
}

/* Navigation */
.tracker-nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.tracker-nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

body.light-mode .tracker-nav a {
  color: var(--primary);
}

.tracker-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: white;
  transition: all var(--transition-fast);
  transform: translateX(-50%);
  border-radius: 1px;
}

body.light-mode .tracker-nav a::after {
  background: var(--accent);
}

.tracker-nav a:hover,
.tracker-nav a.active {
  color: white;
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

body.light-mode .tracker-nav a:hover,
body.light-mode .tracker-nav a.active {
  color: var(--accent);
  background: rgba(255, 111, 0, 0.08);
}

.tracker-nav a:hover::after,
.tracker-nav a.active::after {
  width: 80%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  outline: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.2rem;
}

body.light-mode .theme-toggle {
  background: rgba(106, 27, 154, 0.1);
  color: var(--primary);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

body.light-mode .theme-toggle:hover {
  background: rgba(106, 27, 154, 0.2);
}

/* User Profile */
.user-profile {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.1);
  position: relative;
  gap: 0.5rem;
  color: white;
  transition: all var(--transition-fast);
}

body.light-mode .user-profile {
  background: rgba(106, 27, 154, 0.1);
  color: var(--primary);
}

.user-profile:hover,
.user-profile.active {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

body.light-mode .user-profile:hover,
body.light-mode .user-profile.active {
  background: rgba(106, 27, 154, 0.2);
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  overflow: hidden;
  position: relative;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar span {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.user-name {
  font-size: 0.9rem;
  font-weight: 500;
}

/* User Dropdown */
.user-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--elevated-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--elevated-shadow);
  min-width: 200px;
  z-index: 1200;
  padding: 0.5rem 0;
  list-style: none;
  margin: 0;
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.user-profile.active .user-dropdown-menu {
  display: block;
  animation: fadeInDown 0.2s ease;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.user-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  color: var(--text-color);
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  margin: 0 0.5rem;
  border-radius: 4px;
}

.user-dropdown-menu a:hover {
  background: rgba(106, 27, 154, 0.1);
  color: var(--primary);
  transform: none;
}

body.light-mode .user-dropdown-menu a:hover {
  background: rgba(255, 111, 0, 0.1);
  color: var(--accent);
}

.user-dropdown-menu i {
  font-size: 1.1rem;
  color: var(--primary);
}

body.light-mode .user-dropdown-menu i {
  color: var(--accent);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

body.light-mode .mobile-menu-toggle {
  color: var(--primary);
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

body.light-mode .mobile-menu-toggle:hover {
  background: rgba(106, 27, 154, 0.1);
}

/* Main Content */
.tracker-main {
  min-height: calc(100vh - 80px);
  padding: 1.5rem 0;
}

/* Enhanced Intro Section */
.tracker-intro {
  margin-bottom: 3rem;
  padding: 2rem;
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.tracker-intro::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: scaleY(0);
  transition: transform var(--transition);
}

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

.stat-card:hover::before {
  transform: scaleY(1);
}

.stat-icon {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(106, 27, 154, 0.3);
}

.stat-icon i {
  font-size: 1.75rem;
}

.stat-content {
  flex: 1;
}

.stat-content h3 {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  color: var(--light-text);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-color);
  margin: 0;
}

/* Quick Actions */
.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* Enhanced Section Styling */
.tracker-section {
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  margin-bottom: 3rem;
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.tracker-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.tracker-section:hover {
  transform: translateY(-4px);
  box-shadow: var(--elevated-shadow);
}

.tracker-section:hover::before {
  opacity: 1;
}

/* Enhanced Upload Form */
.upload-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
}

.upload-preview {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 350px;
  position: relative;
  overflow: hidden;
  border: 2px dashed var(--border-light);
  transition: all var(--transition);
}

.upload-preview:hover {
  border-color: var(--accent);
  background: var(--surface-light);
}

.upload-preview img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--border-radius);
  object-fit: cover;
}

.upload-preview .placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--light-text);
  padding: 2rem;
  text-align: center;
}

.upload-preview .placeholder i {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
  opacity: 0.7;
}

.form-fields {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--text-color);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.85rem 1rem;
  background: var(--surface-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-family: inherit;
  transition: all var(--transition-fast);
  font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 111, 0, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.weight-input {
  display: flex;
  gap: 0.5rem;
}

.weight-input input {
  flex: 1;
}

.weight-input select {
  width: 80px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1rem;
}

/* Enhanced Timeline Controls */
.timeline-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-light);
  align-items: center;
}

.search-filter {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-filter input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.search-filter input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 111, 0, 0.2);
}

.search-filter i {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--light-text);
  pointer-events: none;
}

.category-filter,
.sort-options {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.category-filter label,
.sort-options label {
  color: var(--light-text);
  font-size: 0.9rem;
  white-space: nowrap;
}

.category-filter select,
.sort-options select {
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-family: inherit;
  transition: all var(--transition-fast);
  min-width: 150px;
  cursor: pointer;
}

.category-filter select:focus,
.sort-options select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 111, 0, 0.2);
}

/* Enhanced Photo Gallery */
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.photo-card {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition);
  position: relative;
  border: 1px solid var(--border-light);
  cursor: pointer;
}

.photo-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--elevated-shadow);
  border-color: var(--accent);
}

.photo-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.photo-card:hover img {
  transform: scale(1.05);
}

.photo-info {
  padding: 1.5rem;
  position: relative;
}

.photo-date {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
  font-weight: 500;
  box-shadow: 0 4px 10px rgba(106, 27, 154, 0.3);
}

.photo-category {
  display: inline-block;
  background: var(--card-bg);
  color: var(--light-text);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.7rem;
  margin-left: 0.5rem;
  border: 1px solid var(--border-light);
}

.photo-info h3 {
  margin: 0.75rem 0 0.5rem;
  color: var(--text-color);
  font-size: 1.2rem;
}

.photo-info p {
  color: var(--light-text);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.photo-actions {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

/* Enhanced Empty States */
.empty-gallery,
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  border: 2px dashed var(--border-light);
  border-radius: var(--border-radius);
  margin: 2rem 0;
  background: var(--surface-bg);
}

.empty-gallery i,
.no-results i {
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.7;
}

.empty-gallery h3,
.no-results h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-color);
}

.empty-gallery p,
.no-results p {
  color: var(--light-text);
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Enhanced Before & After Comparison */
.comparison-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 2rem auto;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-light);
}

.comparison-wrapper {
  position: relative;
  width: 100%;
  padding-top: 75%; /* 4:3 Aspect Ratio */
  background: var(--surface-bg);
}

.before-image,
.after-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.before-image img,
.after-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.after-image {
  clip-path: inset(0 50% 0 0);
  transition: clip-path 0.2s ease;
}

.comparison-slider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: var(--accent);
  transform: translateX(-50%);
  cursor: ew-resize;
  z-index: 10;
}

.comparison-slider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.comparison-slider::after {
  content: "↔";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
}

.comparison-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
}

.comparison-labels span {
  padding: 0.5rem 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: 20px;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.comparison-labels span:last-child {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
}

.comparison-range {
  width: 100%;
  margin: 2rem 0 1rem;
  -webkit-appearance: none;
  height: 6px;
  background: var(--surface-bg);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.comparison-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-fast);
}

.comparison-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.comparison-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

/* Enhanced Weight Tracking */
.weight-tracking-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}

.weight-form-container {
  background: var(--surface-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-light);
  height: fit-content;
}

.weight-history {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.weight-history h3 {
  padding: 1.5rem;
  margin: 0;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-light);
}

.weight-table-container {
  max-height: 400px;
  overflow-y: auto;
}

.weight-table {
  width: 100%;
  border-collapse: collapse;
}

.weight-table th,
.weight-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.weight-table th {
  background: var(--card-bg);
  color: var(--accent);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 10;
}

.weight-table tr:last-child td {
  border-bottom: none;
}

.weight-table tr:hover td {
  background: var(--card-bg);
}

.text-success {
  color: var(--success);
}

.text-error {
  color: var(--error);
}

/* Enhanced Measurements */
.measurements-container {
  background: var(--surface-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-light);
}

.measurements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

/* Enhanced Progress Charts */
.chart-container {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-top: 2rem;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-light);
}

.chart-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1rem;
}

.chart-tab {
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  position: relative;
  color: var(--light-text);
}

.chart-tab.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 10px rgba(106, 27, 154, 0.2);
}

.chart-tab:hover:not(.active) {
  background: var(--card-bg);
  color: var(--text-color);
}

.chart-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
  justify-content: center;
}

/* Enhanced AI Feedback */
.ai-feedback-placeholder {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-light);
}

.ai-feedback-placeholder i {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0.7;
}

.ai-feedback-placeholder p {
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.loading-animation {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.loading-animation i {
  font-size: 3rem;
  color: var(--primary);
}

.rotating {
  animation: rotate 2s linear infinite;
}

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

.ai-analysis-results {
  background: var(--surface-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.ai-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(106, 27, 154, 0.1) 0%, rgba(255, 111, 0, 0.1) 100%);
  border-bottom: 1px solid var(--border-light);
}

.ai-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  flex-shrink: 0;
}

.ai-title h3 {
  margin-bottom: 0.25rem;
  color: var(--text-color);
}

.ai-title p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--light-text);
}

.ai-content {
  padding: 1.5rem;
}

.ai-section {
  margin-bottom: 2rem;
}

.ai-section h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.ai-section h4 i {
  font-size: 1.25rem;
}

.ai-list {
  list-style: none;
  padding-left: 1.5rem;
}

.ai-list li {
  position: relative;
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  color: var(--light-text);
}

.ai-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.ai-metrics {
  display: flex;
  gap: 2rem;
  margin: 1.5rem 0;
}

.ai-metric {
  flex: 1;
  background: var(--card-bg);
  border-radius: var(--border-radius-sm);
  padding: 1.5rem;
  text-align: center;
  border: 1px solid var(--border-light);
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-label {
  color: var(--light-text);
  font-size: 0.9rem;
}

.ai-disclaimer {
  margin-top: 2rem;
  padding: 1rem;
  background: var(--card-bg);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-light);
}

.ai-disclaimer p {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0;
  font-size: 0.85rem;
  color: var(--muted-text);
}

.ai-disclaimer i {
  font-size: 1.25rem;
  color: var(--warning);
}

/* Enhanced Buttons */
.btn {
  padding: 0.85rem 1.75rem;
  border-radius: var(--border-radius-sm);
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  font-family: inherit;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
  width: 300%;
  height: 300%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(106, 27, 154, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(106, 27, 154, 0.4);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 111, 0, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 111, 0, 0.4);
}

.btn-secondary {
  background: var(--surface-bg);
  color: var(--text-color);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--surface-light);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.btn-run-ai {
  background: linear-gradient(135deg, #9c27b0 0%, #673ab7 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(156, 39, 176, 0.3);
}

.btn-run-ai:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(156, 39, 176, 0.4);
}

/* Enhanced Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

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

.modal-content {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--elevated-shadow);
  border: 1px solid var(--border-light);
  animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
  margin-bottom: 0;
}

.modal-header .close {
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-header .close:hover {
  color: var(--text-color);
  background: var(--surface-bg);
  transform: rotate(90deg);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* Photo Detail Modal */
.photo-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.photo-detail-image {
  border-radius: var(--border-radius-sm);
  overflow: hidden;
}

.detail-image {
  width: 100%;
  height: auto;
  display: block;
}

.detail-date {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.detail-category {
  display: inline-block;
  background: var(--surface-bg);
  color: var(--light-text);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-left: 0.5rem;
  border: 1px solid var(--border-light);
}

.detail-notes {
  background: var(--surface-bg);
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-light);
  margin-bottom: 1.5rem;
}

.detail-weight {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.measurements-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  background: var(--surface-bg);
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-light);
}

.measurement-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border-light);
}

.measurement-item:last-child,
.measurement-item:nth-last-child(-n + 2) {
  border-bottom: none;
}

.measurement-item span {
  font-weight: 600;
  color: var(--light-text);
}

/* Enhanced AI Chatbot */
.ai-chatbot {
  position: fixed;
  bottom: 5rem;
  right: 2rem;
  width: 350px;
  height: 500px;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--elevated-shadow);
  display: flex;
  flex-direction: column;
  z-index: 100;
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  transform-origin: bottom right;
}

.ai-chatbot.hidden {
  transform: scale(0);
  opacity: 0;
  visibility: hidden;
}

.chat-header {
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-header h3 {
  margin-bottom: 0;
  font-size: 1.1rem;
}

.chat-header button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-header button:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.chat-body {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chat-message {
  padding: 0.75rem 1rem;
  border-radius: 1rem;
  max-width: 80%;
  word-break: break-word;
}

.chat-message.bot {
  background: var(--surface-bg);
  border: 1px solid var(--border-light);
  align-self: flex-start;
  border-bottom-left-radius: 0;
}

.chat-message.user {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 0;
}

.chat-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: 0.5rem;
}

.chat-footer input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--surface-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-family: inherit;
}

.chat-footer input:focus {
  outline: none;
  border-color: var(--accent);
}

.chat-footer button {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chat-footer button:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

#chat-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(106, 27, 154, 0.4);
  z-index: 99;
  transition: all var(--transition);
}

#chat-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(106, 27, 154, 0.5);
}

#chat-toggle i {
  font-size: 1.5rem;
}

/* Enhanced Footer */
.tracker-footer {
  background: var(--card-bg);
  padding: 2rem 0;
  border-top: 1px solid var(--border-light);
  margin-top: 4rem;
}

.tracker-footer p {
  text-align: center;
  margin-bottom: 0;
  color: var(--light-text);
}

/* Enhanced Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 350px;
}

.toast {
  background: var(--card-bg);
  border-radius: var(--border-radius-sm);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--elevated-shadow);
  border-left: 4px solid var(--primary);
  animation: toastIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transition: opacity 0.3s ease;
  border: 1px solid var(--border-light);
}

@keyframes toastIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.success {
  border-left-color: var(--success);
}

.toast.error {
  border-left-color: var(--error);
}

.toast.warning {
  border-left-color: var(--warning);
}

.toast i {
  font-size: 1.5rem;
}

.toast.success i {
  color: var(--success);
}

.toast.error i {
  color: var(--error);
}

.toast.warning i {
  color: var(--warning);
}

.toast-content {
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-close:hover {
  color: var(--text-color);
  background: var(--surface-bg);
  transform: rotate(90deg);
}

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

::-webkit-scrollbar-track {
  background: var(--surface-bg);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent), var(--primary));
}

/* Responsive Design */
@media (max-width: 1200px) {
  .weight-tracking-container {
    grid-template-columns: 1fr;
  }

  .photo-detail-grid {
    grid-template-columns: 1fr;
  }

  .comparison-controls {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 992px) {
  .upload-form {
    grid-template-columns: 1fr;
  }

  .tracker-nav {
    display: none;
  }

  .tracker-nav.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
  }

  .tracker-nav.active ul {
    flex-direction: column;
    gap: 0.5rem;
  }

  .tracker-nav.active a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color);
  }

  .mobile-menu-toggle {
    display: block;
  }

  .ai-metrics {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .container {
    width: 95%;
    padding: 1rem 0;
  }

  .tracker-section {
    padding: 1.5rem;
  }

  .photo-gallery {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
  }

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

  .timeline-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .search-filter {
    min-width: auto;
  }

  .ai-chatbot {
    width: calc(100% - 2rem);
    right: 1rem;
    bottom: 5rem;
  }

  .header-actions {
    gap: 0.5rem;
  }

  .user-name {
    display: none;
  }
}

@media (max-width: 576px) {
  .container {
    width: 95%;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .photo-gallery {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

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

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

  .measurements-grid {
    grid-template-columns: 1fr;
  }

  .ai-chatbot {
    width: 100%;
    height: 80vh;
    bottom: 0;
    right: 0;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
  }

  #chat-toggle {
    bottom: 1rem;
    right: 1rem;
  }
}

/* Animations and Effects */
@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

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

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

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.animate-slide-up {
  animation: slideInUp 0.5s ease-out;
}

/* Focus Management for Accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --text-color: #ffffff;
    --light-text: #ffffff;
  }

  body.light-mode {
    --text-color: #000000;
    --light-text: #000000;
  }

  .btn-secondary {
    border-width: 2px;
  }

  .user-dropdown-menu {
    border-width: 2px;
  }
}

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

  .tracker-header,
  .tracker-intro,
  .tracker-footer {
    animation: none;
  }
}

/* Print Styles */
@media print {
  .tracker-header,
  .quick-actions,
  .timeline-controls,
  .photo-actions,
  .ai-chatbot,
  #chat-toggle,
  .theme-toggle,
  .tracker-footer,
  .mobile-menu-toggle {
    display: none !important;
  }

  .tracker-main {
    padding: 0;
  }

  .stat-card,
  .photo-card,
  .tracker-section {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  h2::after {
    background: #000;
  }
}

/* Selection */
::selection {
  background-color: var(--accent);
  color: white;
}

/* Custom Properties for Dynamic Theming */
[data-theme="dark"] {
  --primary: #6a1b9a;
  --accent: #ff6f00;
  --dark-bg: #1c1c1c;
  --card-bg: #1e1e1e;
  --text-color: #e0e0e0;
}

[data-theme="light"] {
  --primary: #6a1b9a;
  --accent: #ff6f00;
  --dark-bg: #f8fafc;
  --card-bg: #ffffff;
  --text-color: #1a202c;
}

/* Enhanced hover effects for better UX */
@media (hover: hover) {
  .photo-card:hover,
  .stat-card:hover,
  .tracker-section:hover {
    cursor: pointer;
  }

  .stat-card:hover .stat-icon {
    transform: scale(1.1);
  }

  .btn:hover {
    cursor: pointer;
  }
}

/* Loading States */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-light);
  border-radius: 50%;
  border-top-color: var(--accent);
  animation: spin 1s ease-in-out infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--surface-bg) 25%, var(--surface-light) 50%, var(--surface-bg) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 4px;
}

@keyframes 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;
}

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.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;
}

/* Enhanced Error States */
.error-state {
  color: var(--error);
  background: rgba(244, 67, 54, 0.1);
  border: 1px solid var(--error);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem;
  margin: 0.5rem 0;
}

.success-state {
  color: var(--success);
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid var(--success);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem;
  margin: 0.5rem 0;
}

.warning-state {
  color: var(--warning);
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid var(--warning);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem;
  margin: 0.5rem 0;
}

/* Enhanced Form Validation */
.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--error);
  box-shadow: 0 0 0 2px rgba(244, 67, 54, 0.2);
}

.form-group input.success,
.form-group textarea.success,
.form-group select.success {
  border-color: var(--success);
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.error-message {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.success-message {
  color: var(--success);
  font-size: 0.85rem;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Enhanced Drag and Drop */
.drag-over {
  border-color: var(--accent) !important;
  background: rgba(255, 111, 0, 0.1) !important;
}

.drag-over::after {
  content: "Drop your photo here";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 111, 0, 0.9);
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
  border-radius: var(--border-radius);
}

/* Enhanced Progress Indicators */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--surface-bg);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width var(--transition);
  position: relative;
}

.progress-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-image: linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 75%,
    transparent
  );
  background-size: 50px 50px;
  animation: move 2s linear infinite;
}

@keyframes move {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 50px 50px;
  }
}

/* Enhanced Tooltips */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]:hover::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--elevated-bg);
  color: var(--text-color);
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  white-space: nowrap;
  z-index: 1000;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-light);
  margin-bottom: 0.5rem;
}

[data-tooltip]:hover::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--elevated-bg);
  margin-bottom: -5px;
  z-index: 1000;
}