:root {
  --bg-dark: #0f0f1a;
  --bg-darker: #1a1a2e;
  --bg-darkest: #16213e;
  
  --primary-start: #ff6b6b;
  --primary-mid: #ee5a24;
  --primary-end: #fd79a8;
  
  --secondary: #a855f7;
  --accent: #3b82f6;
  
  --text-main: #ffffff;
  --text-muted: #a0a0b0;
  --text-dark: #121212;
  
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-glow: rgba(255, 107, 107, 0.5);
  
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 50px;
  
  --shadow-primary: 0 20px 60px rgba(255, 107, 107, 0.15);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 50%, var(--bg-darkest) 100%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::selection {
  background: var(--primary-mid);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-start);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

/* Typography Scale */
.text-gradient {
  background: linear-gradient(90deg, var(--primary-start), var(--primary-mid), var(--primary-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.title-xl { font-size: 4rem; margin-bottom: 1rem; }
.title-lg { font-size: 3rem; margin-bottom: 1rem; }
.title-md { font-size: 2rem; margin-bottom: 0.75rem; }
.text-lead { font-size: 1.25rem; color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(90deg, var(--primary-start), var(--primary-mid));
  color: #fff;
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, var(--primary-mid), var(--primary-end));
  opacity: 0;
  z-index: -1;
  transition: var(--transition);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 70px rgba(255, 107, 107, 0.25);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--text-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--text-main);
}
.btn-ghost:hover {
  color: var(--primary-start);
}

.btn-block {
  width: 100%;
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 2rem;
  box-shadow: var(--shadow-glass);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-brand {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-main);
}

.nav-auth {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-start);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem top 50%;
  background-size: 0.65rem auto;
}

/* Flash Messages */
.flash-container {
  position: fixed;
  top: 100px;
  right: 20px;
  z-index: 1050;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.flash-message {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-btn);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-left: 4px solid var(--accent);
  color: var(--text-main);
  box-shadow: var(--shadow-glass);
  animation: slideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-width: 300px;
}

.flash-success { border-left-color: #10b981; }
.flash-error { border-left-color: #ef4444; }
.flash-info { border-left-color: #3b82f6; }

.flash-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-card);
  padding: 4rem 2rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.2);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--primary-start);
  background: rgba(255, 107, 107, 0.05);
}

.upload-icon {
  font-size: 4rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  transition: var(--transition);
}

.upload-zone:hover .upload-icon {
  color: var(--primary-start);
  transform: translateY(-10px);
}

#file-upload {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  opacity: 0;
  cursor: pointer;
}

/* Photo Grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.photo-item {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: var(--radius-btn);
  overflow: hidden;
  box-shadow: var(--shadow-glass);
}

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

.photo-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(239, 68, 68, 0.9);
  color: #fff;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  backdrop-filter: blur(4px);
}

/* Wizard Steps */
.wizard-steps {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  position: relative;
}

.wizard-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--glass-border);
  z-index: 0;
  transform: translateY(-50%);
}

.step-indicator {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 2px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  z-index: 1;
  position: relative;
  color: var(--text-muted);
  transition: var(--transition);
}

.step-indicator.active {
  border-color: var(--primary-start);
  color: var(--primary-start);
  box-shadow: 0 0 15px rgba(255, 107, 107, 0.3);
}

.step-indicator.completed {
  background: linear-gradient(135deg, var(--primary-start), var(--primary-mid));
  border-color: transparent;
  color: #fff;
}

/* Style Cards */
.style-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4/5;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}

.style-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);
  z-index: 1;
}

.style-card img, .style-card-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.style-card-placeholder {
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.style-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  z-index: 2;
}

.style-card.selected {
  border-color: var(--primary-start);
  box-shadow: 0 0 20px rgba(255, 107, 107, 0.4);
}

.style-card.selected::after {
  content: '✓';
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 30px;
  height: 30px;
  background: var(--primary-start);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  font-weight: bold;
}

/* Badges & Tags */
.badge, .tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  backdrop-filter: blur(5px);
}

.badge-primary {
  background: linear-gradient(90deg, var(--primary-start), var(--primary-mid));
  color: #fff;
}

/* Pricing Cards */
.pricing-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-card.featured {
  transform: scale(1.05);
  border-color: var(--primary-start);
  box-shadow: var(--shadow-primary);
  position: relative;
}

.pricing-card.featured::before {
  content: 'Populaire';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--primary-start), var(--primary-mid));
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: bold;
}

.price-display {
  font-size: 3rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  margin: 1rem 0;
}

.pricing-features {
  list-style: none;
  margin: 2rem 0;
  flex-grow: 1;
}

.pricing-features li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-features li::before {
  content: '✓';
  color: var(--primary-start);
  font-weight: bold;
}

/* Results & Coaching Panel */
.result-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-glass);
  position: relative;
  aspect-ratio: 4/5;
}
.result-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.coaching-panel {
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-card);
  padding: 2rem;
  height: 100%;
}

/* Loaders & Progress */
.loader-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 0;
}

.loader {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 4px solid rgba(255, 107, 107, 0.1);
  border-top-color: var(--primary-start);
  animation: spin 1s linear infinite;
  margin-bottom: 2rem;
}

.progress-container {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 1rem;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-start), var(--primary-end));
  transition: width 0.3s ease;
}

/* Custom Range Slider */
input[type=range] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--primary-mid);
  cursor: pointer;
  margin-top: -8px;
  box-shadow: 0 0 10px rgba(238, 90, 36, 0.5);
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  cursor: pointer;
  background: var(--glass-border);
  border-radius: 2px;
}

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

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

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Checkbox as Cards */
.checkbox-card-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
}

.checkbox-card {
  position: relative;
  cursor: pointer;
}

.checkbox-card input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.checkbox-card-content {
  padding: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  text-align: center;
  transition: var(--transition);
  background: rgba(0,0,0,0.2);
}

.checkbox-card input:checked ~ .checkbox-card-content {
  border-color: var(--primary-start);
  background: rgba(255, 107, 107, 0.1);
  box-shadow: 0 0 15px rgba(255, 107, 107, 0.2);
}

/* Logo & Header Branding */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.nav-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(255, 107, 107, 0.4));
}

/* Footer */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0;
  margin-top: 5rem;
  text-align: center;
  color: var(--text-muted);
}
.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
}
.footer-logo {
  height: 32px;
  width: auto;
  filter: drop-shadow(0 2px 6px rgba(255, 107, 107, 0.3));
}
.footer-links a {
  margin: 0 1rem;
}
.footer-links a:hover {
  color: var(--text-main);
}
.footer-credits {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-credits strong {
  color: var(--text-main);
}

/* Mobile App User Badge & Pulse */
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid rgba(255, 107, 107, 0.4);
  border-radius: 50px;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}
.user-badge:hover {
  background: rgba(255, 107, 107, 0.25);
  transform: translateY(-1px);
}
.user-badge-pulse {
  width: 8px;
  height: 8px;
  background: #ff6b6b;
  border-radius: 50%;
  box-shadow: 0 0 8px #ff6b6b;
  animation: pulse-ring 1.5s infinite;
}
@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(255, 107, 107, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 107, 107, 0); }
}

/* Fixed Bottom App Navigation Bar */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 15, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  justify-content: space-around;
  align-items: center;
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 600;
  gap: 3px;
  flex: 1;
  height: 100%;
  transition: var(--transition);
  position: relative;
}

.bottom-nav-icon {
  width: 22px;
  height: 22px;
  transition: var(--transition);
}

.bottom-nav-item.active {
  color: var(--primary-start);
}
.bottom-nav-item.active .bottom-nav-icon {
  transform: translateY(-2px);
  filter: drop-shadow(0 2px 8px rgba(255, 107, 107, 0.6));
}
.bottom-nav-item.active::after {
  content: '';
  position: absolute;
  top: 0;
  width: 30px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-start), var(--primary-mid));
  border-radius: 0 0 4px 4px;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav-brand span {
    display: none !important;
  }
  .nav-logo {
    height: 40px !important;
  }
  body {
    padding-bottom: 75px;
  }
  main {
    padding-top: 70px !important;
    min-height: calc(100dvh - 140px) !important;
  }
  .bottom-nav {
    display: flex;
  }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .title-xl { font-size: 2.3rem; }
  .title-lg { font-size: 1.8rem; }
  .navbar .nav-links {
    display: none !important;
  }
  .navbar .nav-auth {
    display: flex !important;
  }
  .hamburger {
    display: none !important;
  }
  .btn {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .glass-card {
    padding: 1.25rem;
    border-radius: 20px;
  }
  .wizard-steps {
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
  }
  .wizard-steps::before { display: none; }
}

@media (max-width: 480px) {
  .glass-card { padding: 1.1rem; }
  .btn { padding: 0.7rem 1.2rem; font-size: 0.95rem; }
}