:root {
  /* Dark Theme Variables - Enhanced */
  --bg-dark: #0f1115;
  --bg-grad-start: #0f1115;
  --bg-grad-end: #181b21;

  --card-bg: #1e2229;
  --card-border: #2a2f3a;

  --text-main: #f0f4f8;
  --text-secondary: #9daec2;
  --text-muted: #627284;

  --primary-color: #4ade80;
  /* Brighter, more vibrant green */
  --primary-glow: rgba(74, 222, 128, 0.4);
  --primary-hover: #4ade80;
  --primary-text: #052e16;

  --input-bg: #13161c;
  --input-border: #2f3542;
  --input-focus: #4ade80;

  --error-color: #ef5350;
  --success-color: #4ade80;

  --spacing-xs: 4px;
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-input: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Fredoka', sans-serif;
  background-color: var(--bg-dark);
  background: 
    radial-gradient(circle at 15% 50%, rgba(74, 222, 128, 0.08), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(74, 222, 128, 0.08), transparent 25%),
    radial-gradient(circle at top center, var(--bg-grad-end), var(--bg-grad-start));
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

.auth-container,
.container {
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.auth-container {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 90vh;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 800px;
  padding-top: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 2rem;
  color: var(--primary-color);
}

.section-title {
  font-size: 1.3rem;
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--card-border);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
}

.section-icon {
  font-size: 1.5rem;
  display: inline-block;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* Cards */
.card,
.section-card {
  background: var(--card-bg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--card-border);
  margin-bottom: var(--spacing-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

.section-card:nth-child(1) { animation-delay: 0.1s; }
.section-card:nth-child(2) { animation-delay: 0.2s; }
.section-card:nth-child(3) { animation-delay: 0.3s; }
.section-card:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-card {
  position: relative;
  overflow: hidden;
}

.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(74, 222, 128, 0.1), transparent);
  transition: left 0.5s;
}

.section-card:hover::before {
  left: 100%;
}

.section-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px -10px rgba(74, 222, 128, 0.3);
  border-color: var(--primary-glow);
}

/* Inputs */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.helper-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
  margin-top: -4px;
  font-style: italic;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
textarea {
  width: 100%;
  padding: 16px;
  background-color: var(--input-bg);
  border: 2px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 1rem;
  font-family: 'Fredoka', sans-serif;
  /* Explicitly set font for inputs */
  transition: all 0.2s ease;
  box-shadow: var(--shadow-input);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: #1a1e26;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.1);
}

textarea.large-textarea {
  min-height: 140px;
  line-height: 1.6;
}

.other-input {
  margin-top: 12px;
}

/* Checkboxes & Radios */
.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: var(--spacing-md);
}

.checkbox-item {
  display: flex;
  align-items: center;
  background: var(--input-bg);
  padding: 14px;
  border-radius: var(--radius-md);
  border: 2px solid var(--input-border);
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  color: var(--text-secondary);
}

.checkbox-item:hover {
  border-color: var(--text-secondary);
  background-color: #1a1e26;
}

.checkbox-item:has(input:checked) {
  border-color: var(--primary-color);
  background-color: rgba(74, 222, 128, 0.05);
  color: var(--primary-color);
}

.checkbox-item input {
  margin-right: 12px;
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color) 100%);
  color: var(--primary-text);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 600;
  font-family: 'Fredoka', sans-serif;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-sm);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

.btn:hover {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color) 100%);
  transform: translateY(-3px);
  box-shadow: 0 15px 30px -5px var(--primary-glow);
}

.btn:active {
  transform: translateY(-1px);
}

.btn.pulse {
  animation: pulse-button 2s infinite;
}

@keyframes pulse-button {
  0%, 100% { box-shadow: 0 10px 20px -5px var(--primary-glow); }
  50% { box-shadow: 0 10px 30px -5px var(--primary-glow), 0 0 0 10px rgba(74, 222, 128, 0.1); }
}

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

.logout-btn {
  background-color: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

.logout-btn:hover {
  border-color: var(--text-main);
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.05);
  transform: none;
  box-shadow: none;
}

/* Floating Background Elements */
.floating-elements {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-icon {
  position: absolute;
  font-size: 2.5rem;
  opacity: 0.15;
  animation: float 20s infinite ease-in-out;
}

.floating-icon:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.floating-icon:nth-child(2) { top: 20%; right: 15%; animation-delay: 2s; }
.floating-icon:nth-child(3) { top: 50%; left: 5%; animation-delay: 4s; }
.floating-icon:nth-child(4) { bottom: 20%; right: 10%; animation-delay: 6s; }
.floating-icon:nth-child(5) { top: 70%; left: 20%; animation-delay: 8s; }
.floating-icon:nth-child(6) { bottom: 10%; left: 50%; animation-delay: 10s; }
.floating-icon:nth-child(7) { top: 30%; right: 30%; animation-delay: 12s; }
.floating-icon:nth-child(8) { bottom: 40%; right: 40%; animation-delay: 14s; }

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-30px) rotate(5deg); }
  50% { transform: translateY(-60px) rotate(-5deg); }
  75% { transform: translateY(-30px) rotate(3deg); }
}

/* Header */
.profile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.1) 0%, var(--card-bg) 100%);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  box-shadow: 0 10px 30px rgba(74, 222, 128, 0.1);
  position: relative;
  overflow: hidden;
  animation: fadeInDown 0.6s ease-out;
}

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

.profile-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
}

.header-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.profile-header h2 {
  margin: 0;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  display: inline-block;
  animation: rotate 3s linear infinite;
  font-size: 1.8rem;
}

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

.header-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.sparkle {
  animation: sparkle 1.5s infinite;
  font-size: 1rem;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

/* Links */
.switch-auth {
  margin-top: var(--spacing-lg);
  text-align: center;
  color: var(--text-secondary);
}

.switch-auth a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  margin-left: 5px;
}

.switch-auth a:hover {
  text-decoration: underline;
}

/* Error */
.error-message {
  background: rgba(239, 83, 80, 0.1);
  border: 1px solid rgba(239, 83, 80, 0.3);
  color: #ff8a80;
  padding: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  display: none;
}

/* Loading */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 17, 21, 0.9);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  display: none;
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    font-size: 14px;
  }

  .container {
    padding: var(--spacing-sm);
  }

  .card,
  .section-card {
    padding: var(--spacing-md);
  }

  .profile-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .checkbox-group {
    grid-template-columns: 1fr;
  }
}