/* KAI Readiness Pulse – yellow & fun */

:root {
  --color-text: #1c1917;
  --color-text-muted: #78716c;
  --color-bg: #fffbeb;
  --color-bg-card: #fff;
  --color-accent: #facc15;
  --color-accent-hover: #eab308;
  --color-accent-soft: rgba(250, 204, 21, 0.25);
  --color-accent-dark: #ca8a04;
  --color-error: #b91c1c;
  --color-focus: #eab308;
  --font-sans: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --space-s: 0.5rem;
  --space-m: 1rem;
  --space-l: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.5rem;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 28px;
  --transition: 0.25s ease;
  --shadow: 0 4px 24px rgba(28, 25, 23, 0.06);
  --shadow-md: 0 8px 32px rgba(28, 25, 23, 0.08);
  --shadow-yellow: 0 8px 28px rgba(250, 204, 21, 0.22);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

.site-home-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-m) var(--space-xl);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(28, 25, 23, 0.08);
  width: 100%;
  box-sizing: border-box;
}

.site-home-link:hover {
  color: var(--color-accent-hover);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: linear-gradient(165deg, #fffbeb 0%, #fef9c3 40%, #fef08a 70%, #fffbeb 100%);
  -webkit-font-smoothing: antialiased;
}

/* Shared card container for all steps */
.card {
  width: 100%;
  max-width: 420px;
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(250, 204, 21, 0.2);
}

.pulse-flow {
  min-height: 100vh;
  position: relative;
}

/* Steps: only active is visible */
.step {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-m);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

@media (min-width: 480px) {
  .step {
    padding: var(--space-2xl);
  }
}

.step-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.step-prev {
  transform: translateX(-8%);
}

.step-next {
  transform: translateX(8%);
}

/* Welcome */
.step-welcome .welcome-inner {
  text-align: center;
}

.welcome-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin: 0 0 var(--space-m);
  padding: var(--space-s) var(--space-m);
  background: var(--color-accent-soft);
  border-radius: 999px;
}

.welcome-title {
  font-size: clamp(1.875rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 var(--space-m);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.welcome-tagline {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-l);
  line-height: 1.65;
}

.welcome-about {
  text-align: left;
  padding: var(--space-l);
  margin: 0 0 var(--space-xl);
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border-radius: var(--radius);
  border: 1px solid rgba(250, 204, 21, 0.4);
}

.welcome-about-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  margin: 0 0 var(--space-s);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.welcome-about-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

.btn-welcome {
  min-width: 12rem;
  padding: var(--space-m) var(--space-2xl);
  font-size: 1.0625rem;
}

/* Lead */
.lead-label {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-xl);
  text-align: center;
  line-height: 1.4;
}

.lead-inner .field {
  margin-bottom: var(--space-l);
}

.lead-inner input {
  width: 100%;
  padding: var(--space-m) var(--space-l);
  font: inherit;
  font-size: 1rem;
  border: 2px solid #e7e5e4;
  border-radius: var(--radius);
  background: #fafaf9;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.lead-inner input::placeholder {
  color: #a8a29e;
}

.lead-inner input:hover {
  border-color: rgba(250, 204, 21, 0.5);
  background: var(--color-bg-card);
}

.lead-inner input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg-card);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.lead-inner .error {
  font-size: 0.875rem;
  color: var(--color-error);
  margin-top: var(--space-s);
  display: block;
}

.lead-inner .btn-primary {
  width: 100%;
  margin-top: var(--space-l);
  padding: var(--space-m) var(--space-xl);
}

/* Pulse (one statement + slider) */
.step-pulse .pulse-inner {
  max-width: 440px;
}

.pulse-progress {
  margin-bottom: var(--space-xl);
}

.pulse-progress-text {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  display: block;
  margin-bottom: var(--space-s);
  letter-spacing: 0.02em;
}

.pulse-progress-bar {
  height: 6px;
  background: #f5f5f4;
  border-radius: 999px;
  overflow: hidden;
}

.pulse-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border-radius: 999px;
  transition: width 0.4s ease;
}

.pulse-prompt {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  margin: 0 0 var(--space-s);
  letter-spacing: 0.02em;
}

.pulse-statement {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  margin: 0 0 var(--space-xl);
  padding: var(--space-l);
  background: #fafaf9;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

/* Slider */
.pulse-scale {
  margin-bottom: var(--space-xl);
}

.pulse-scale input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 14px;
  background: #f5f5f4;
  border-radius: 999px;
  margin: 0 0 var(--space-s);
}

.pulse-scale input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 32px;
  height: 32px;
  background: linear-gradient(145deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.pulse-scale input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-yellow);
}

.pulse-scale input[type="range"]::-moz-range-thumb {
  width: 32px;
  height: 32px;
  background: linear-gradient(145deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.pulse-scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.pulse-actions {
  display: flex;
  gap: var(--space-m);
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-l);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  padding: var(--space-s) var(--space-m);
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-accent-soft);
}

/* Submit */
.step-submit .submit-inner {
  text-align: center;
}

.submit-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin: 0 0 var(--space-s);
}

.submit-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  margin: 0 0 var(--space-m);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.submit-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-xl);
  line-height: 1.6;
}

.submit-inner .btn-primary {
  min-width: 14rem;
  padding: var(--space-m) var(--space-2xl);
}

.form-error {
  display: block;
  font-size: 0.875rem;
  color: var(--color-error);
  margin-top: var(--space-m);
}

/* Thank you */
.step-thank-you .thank-you-inner {
  text-align: center;
}

.thank-you-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-xl);
  background: linear-gradient(135deg, var(--color-accent-soft) 0%, rgba(250, 204, 21, 0.4) 100%);
  border-radius: 50%;
  position: relative;
  animation: thankYouPop 0.5s ease;
  border: 3px solid var(--color-accent);
}

.thank-you-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 12px;
  border-left: 3px solid var(--color-accent-dark);
  border-bottom: 3px solid var(--color-accent-dark);
  transform: translate(-55%, -75%) rotate(-45deg);
}

@keyframes thankYouPop {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

.thank-you-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  margin: 0 0 var(--space-m);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.thank-you-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.65;
}

/* Thank you – optional spacing for card */
.thank-you-inner .thank-you-desc {
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-m) var(--space-xl);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #1c1917;
  box-shadow: 0 2px 8px rgba(250, 204, 21, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(180deg, var(--color-accent-hover) 0%, var(--color-accent-dark) 100%);
  box-shadow: var(--shadow-yellow);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  font-weight: 600;
  padding: var(--space-m) var(--space-l);
  border-radius: var(--radius);
}

.btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-accent-soft);
}