/* ============================================================================
   ONBOARDING STYLES — Premium Dark Theme
   ============================================================================
   Glass morphism, smooth animations, mobile-first responsive design
   ========================================================================== */

:root {
  --color-bg: #0a0e1a;
  --color-text: #e8e8e8;
  --color-text-muted: #a8a8a8;
  --color-accent: #4a90d9;
  --color-accent-light: #6ba3e5;
  --color-accent-dark: #3a70b9;
  --color-card-bg: rgba(255, 255, 255, 0.05);
  --color-card-border: rgba(255, 255, 255, 0.1);
  --color-card-hover: rgba(255, 255, 255, 0.08);
  --color-success: #4ade80;
  --color-error: #f87171;

  --font-family: system-ui, -apple-system, sans-serif;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   RESET & TYPOGRAPHY
   ========================================================================== */

.onboarding-overlay * {
  box-sizing: border-box;
}

.onboarding-overlay {
  font-family: var(--font-family);
  color: var(--color-text);
  line-height: 1.6;
}

.onboarding-overlay h1,
.onboarding-overlay h2,
.onboarding-overlay h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.onboarding-overlay p {
  margin: 0;
}

.onboarding-overlay button {
  font-family: var(--font-family);
}

/* ============================================================================
   OVERLAY CONTAINER
   ========================================================================== */

.onboarding-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 14, 26, 0.95) 0%,
    rgba(20, 28, 45, 0.95) 100%
  );
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 9999;
}

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

/* ============================================================================
   CARD CONTAINERS
   ========================================================================== */

.onboarding-card {
  width: 100%;
  max-width: 480px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 20px;
  padding: 2.5rem 1.75rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: slideUp var(--transition-slow) cubic-bezier(0.34, 1.56, 0.64, 1);
}

.onboarding-card.wide {
  max-width: 640px;
}

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

/* Responsive padding */
@media (max-width: 640px) {
  .onboarding-card {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .onboarding-card {
    padding: 1.75rem 1.25rem;
    border-radius: 16px;
  }
}

/* ============================================================================
   ICON & VISUAL ELEMENTS
   ========================================================================== */

.onboarding-icon {
  font-size: 4rem;
  line-height: 1;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(74, 144, 217, 0.15) 0%, rgba(74, 144, 217, 0.05) 100%);
  border: 1px solid rgba(74, 144, 217, 0.2);
  border-radius: 16px;
  animation: float var(--transition-slow) ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* ============================================================================
   HEADINGS & SUBTITLES
   ========================================================================== */

.onboarding-card > h1,
.onboarding-card > h2 {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 480px) {
  .onboarding-card > h1,
  .onboarding-card > h2 {
    font-size: 1.5rem;
  }
}

.onboarding-sub {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* ============================================================================
   VISUAL BREATHING CIRCLE
   ========================================================================== */

.onboarding-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1.5rem 0 2rem;
}

.breath-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 144, 217, 0.25) 0%, rgba(74, 144, 217, 0.05) 100%);
  border: 2px solid rgba(74, 144, 217, 0.3);
  animation: breathe 4s ease-in-out infinite;
  position: relative;
}

.breath-circle::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 144, 217, 0.1) 0%, transparent 70%);
  animation: breatheOuter 4s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(74, 144, 217, 0.4);
  }
  50% {
    transform: scale(1.15);
    box-shadow: 0 0 0 20px rgba(74, 144, 217, 0);
  }
}

@keyframes breatheOuter {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.4;
  }
}

/* ============================================================================
   BUTTONS
   ========================================================================== */

.onboarding-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  letter-spacing: -0.01em;
}

.onboarding-btn.primary {
  width: 100%;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  color: white;
  box-shadow:
    0 4px 15px rgba(74, 144, 217, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.onboarding-btn.primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow:
    0 6px 20px rgba(74, 144, 217, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.onboarding-btn.primary:active:not(:disabled) {
  transform: translateY(0px);
  box-shadow:
    0 2px 8px rgba(74, 144, 217, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.onboarding-btn.primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.onboarding-btn.skip {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  padding: 0.75rem 1.5rem;
}

.onboarding-btn.skip:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.onboarding-btn.skip:active {
  background: rgba(255, 255, 255, 0.08);
}

/* Button container spacing */
.onboarding-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2.5rem;
}

/* ============================================================================
   PROGRESS INDICATOR
   ========================================================================== */

.onboarding-progress {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all var(--transition-base);
}

.progress-dot.filled {
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(74, 144, 217, 0.5);
}

.progress-dot.active {
  transform: scale(1.3);
  box-shadow: 0 0 12px rgba(74, 144, 217, 0.6);
}

.progress-dot:hover {
  transform: scale(1.2);
}

/* ============================================================================
   TEXT INPUT
   ========================================================================== */

.onboarding-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-card-border);
  border-radius: 10px;
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  margin-bottom: 1.5rem;
}

.onboarding-input::placeholder {
  color: rgba(232, 232, 232, 0.4);
}

.onboarding-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.onboarding-input.shake {
  animation: shake 400ms cubic-bezier(0.36, 0, 0.66, -0.56);
  border-color: var(--color-error);
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-8px);
  }
  75% {
    transform: translateX(8px);
  }
}

/* ============================================================================
   OPTION CARDS (Experience Level)
   ========================================================================== */

.onboarding-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.onboarding-option {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-card-bg);
  border: 2px solid var(--color-card-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.onboarding-option::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(74, 144, 217, 0.1) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.onboarding-option:hover {
  border-color: rgba(74, 144, 217, 0.4);
  background: var(--color-card-hover);
}

.onboarding-option.selected {
  border-color: var(--color-accent);
  background: rgba(74, 144, 217, 0.1);
  box-shadow: 0 0 0 1px var(--color-accent), 0 0 15px rgba(74, 144, 217, 0.2);
}

.onboarding-option.selected::before {
  opacity: 1;
}

.option-icon {
  font-size: 1.5rem;
  min-width: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.25rem;
}

.option-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.option-text strong {
  font-size: 0.95rem;
  color: var(--color-text);
}

.option-text span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================================================
   GOAL CHIPS
   ========================================================================== */

.onboarding-goals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (max-width: 480px) {
  .onboarding-goals {
    grid-template-columns: repeat(2, 1fr);
  }
}

.onboarding-goal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1rem;
  background: var(--color-card-bg);
  border: 2px solid var(--color-card-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.onboarding-goal:hover {
  border-color: rgba(74, 144, 217, 0.4);
  background: var(--color-card-hover);
  transform: translateY(-2px);
}

.onboarding-goal.selected {
  border-color: var(--color-accent);
  background: rgba(74, 144, 217, 0.15);
  box-shadow: 0 0 0 1px var(--color-accent), 0 0 15px rgba(74, 144, 217, 0.25);
  transform: scale(1.05);
}

.goal-icon {
  font-size: 2rem;
  line-height: 1;
  transition: transform var(--transition-base);
}

.onboarding-goal.selected .goal-icon {
  animation: goalBounce var(--transition-base);
}

@keyframes goalBounce {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1.1);
  }
}

.onboarding-goal label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
}

/* ============================================================================
   COACH CARDS
   ========================================================================== */

.coach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

@media (max-width: 480px) {
  .coach-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

.coach-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 1.25rem;
  background: var(--color-card-bg);
  border: 2px solid var(--color-card-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.coach-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--coach-color, var(--color-accent)) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.coach-card:hover {
  border-color: rgba(74, 144, 217, 0.4);
  background: var(--color-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.coach-card.selected {
  border-color: var(--coach-color, var(--color-accent));
  background: rgba(74, 144, 217, 0.15);
  box-shadow: 0 0 0 1px var(--coach-color, var(--color-accent)), 0 0 20px rgba(74, 144, 217, 0.3);
}

.coach-card.selected::before {
  opacity: 0.08;
}

.coach-avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--coach-color, var(--color-accent)) 0%, rgba(74, 144, 217, 0.5) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 600;
  color: white;
  box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
  transition: all var(--transition-base);
}

.coach-card.selected .coach-avatar {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(74, 144, 217, 0.4);
}

.coach-initial {
  font-family: var(--font-family);
  font-weight: 700;
}

.coach-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-align: center;
  width: 100%;
}

.coach-info strong {
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 600;
}

.coach-tagline {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.coach-check {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  background: var(--coach-color, var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: white;
  opacity: 0;
  transform: scale(0);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(74, 144, 217, 0.4);
}

.coach-card.selected .coach-check {
  opacity: 1;
  transform: scale(1);
}

/* ============================================================================
   ACCESSIBILITY & UTILITY STATES
   ========================================================================== */

.onboarding-btn:disabled,
.onboarding-btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.onboarding-btn:disabled:hover,
.onboarding-btn[disabled]:hover {
  transform: none;
}

/* Focus visible for keyboard navigation */
.onboarding-btn:focus-visible,
.onboarding-option:focus-visible,
.onboarding-goal:focus-visible,
.coach-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================================================
   LAYOUT HELPERS
   ========================================================================== */

.onboarding-content {
  width: 100%;
}

.onboarding-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-card-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================================== */

@media (max-width: 640px) {
  .onboarding-overlay {
    padding: 1rem;
  }

  .onboarding-card {
    max-width: 100%;
  }

  .onboarding-card > h1,
  .onboarding-card > h2 {
    font-size: 1.5rem;
  }

  .onboarding-sub {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .onboarding-overlay {
    padding: 0.75rem;
  }

  .onboarding-card {
    border-radius: 16px;
  }

  .onboarding-icon {
    width: 70px;
    height: 70px;
    font-size: 3rem;
  }

  .breath-circle {
    width: 120px;
    height: 120px;
  }

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

  .onboarding-goals {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  .onboarding-goal {
    padding: 1rem 0.75rem;
  }

  .goal-icon {
    font-size: 1.75rem;
  }

  .onboarding-goal label {
    font-size: 0.75rem;
  }
}

/* ============================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
  .onboarding-overlay {
    display: none;
  }
}