/* ===== DESIGN TOKENS ===== */
:root {
 --color-bg:          #FFFFFF;       /* Primary white for main background */
  --color-bg-light:    #f9f9f9;       /* Light Grey like the product background */
  --color-surface:     #FFFFFF;       /* Clean white cards/bubbles */
  --color-text:        #191919;       /* Nearly Black – main body text, strong readability */
  --color-text-muted:  #6B7280;       /* Grey – muted text, subtitles, secondary info */
  --color-accent:      #4FD7ED;       /* Krista primary blue – key accents, buttons, active states */
  --color-accent-light:#3F39FF;       /* Neon Blue – lighter/vibrant variant for hover/glow */
  --color-callout-bg:  #F6AF1E;       /* Mandarin – warm callout background (attention-grabbing but not harsh) */
  --color-callout-border: #EB7C80;  /* Salmon – border or accent line for callouts/status */
  --color-code-bg:     #3F3920;       /* Deep brown – dark code/syntax block background */
  --color-code-text:   #FFFFFF;       /* White – high-contrast text on dark code bg */
  --color-critical:    #EB7C80;       /* Salmon – softer "critical" (errors/warnings) instead of harsh red */
  --color-high: #e67e22;
  --color-medium: #f1c40f;
  --color-low: #27ae60;

  --font-heading: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", "Consolas", monospace;

  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;

  --shadow-card: 0 2px 16px rgba(72, 58, 49, 0.06);
  --shadow-sticky: 0 4px 32px rgba(72, 58, 49, 0.10);

  --sticky-top: 2rem;
  --step-min-height: 70vh;
  --transition-speed: 0.4s;
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO SECTION ===== */
.hero {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
  text-align: center;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 1rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== SCROLLYTELLING CONTAINER ===== */
.scrolly {
  display: flex;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
  position: relative;
}

/* ===== LEFT COLUMN: STEPS ===== */
.scrolly__steps {
  flex: 0 0 40%;
  min-width: 0;
}

.scrolly__step {
  min-height: var(--step-min-height);
  padding: 3rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0.3;
  transition: opacity 0.35s ease;
}

.scrolly__step.is-active {
  opacity: 1;
}

.scrolly__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: block;
}

.scrolly__heading {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.scrolly__text {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 40ch;
}

.scrolly__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s ease;
}

.scrolly__button:hover {
  background: var(--color-accent-light);
}

/* ===== RIGHT COLUMN: STICKY WRAP ===== */
.scrolly__sticky-wrap {
  flex: 1;
  min-width: 0;
}

.scrolly__sticky {
  position: sticky;
  top: var(--sticky-top);
  height: calc(100vh - var(--sticky-top) - 2rem);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sticky);
  border: 1px solid rgba(72, 58, 49, 0.06);
  overflow: hidden;
  display: grid;
}

/* ===== PANEL STACKING & TRANSITIONS ===== */
.scrolly__panel {
  grid-area: 1 / 1;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-speed) ease,
    visibility 0s var(--transition-speed);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow-y: auto;
}

.scrolly__panel.is-active {
  opacity: 1;
  visibility: visible;
  transition:
    opacity var(--transition-speed) ease,
    visibility 0s 0s;
}

/* ===== CALLOUT BOX ===== */
.scrolly__callout {
  background: var(--color-callout-bg);
  border-left: 3px solid var(--color-callout-border);
  border-radius: var(--radius-xs);
  padding: 0.875rem 1.125rem;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ===== PANEL 1: CHAT CARD ===== */
.panel-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(72, 58, 49, 0.08);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.panel-card__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(72, 58, 49, 0.08);
}

.panel-card__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.panel-card__dot--red { background: #e74c3c; }
.panel-card__dot--yellow { background: #f39c12; }
.panel-card__dot--green { background: #2ecc71; }

.panel-card__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-left: 8px;
}

.panel-card__body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chat-bubble {
  padding: 0.875rem 1.125rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 90%;
}

.chat-bubble--user {
  background: var(--color-accent);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: var(--radius-xs);
}

.chat-bubble--agent {
  background: var(--color-surface);
  color: var(--color-text);
  align-self: flex-start;
  border: 1px solid rgba(72, 58, 49, 0.08);
  border-bottom-left-radius: var(--radius-xs);
}

.chat-bubble__status {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent-light);
  margin-bottom: 0.5rem;
}

.chat-bubble--hidden {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* ===== PANEL 2: CODE BLOCK ===== */
.panel-code {
  background: var(--color-code-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.panel-code__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.2);
}

.panel-code__filename {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-code-text);
  opacity: 0.7;
}

.panel-code__badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2ecc71;
  background: rgba(46, 204, 113, 0.15);
  padding: 2px 8px;
  border-radius: 999px;
}

.panel-code__body {
  padding: 1.25rem;
  flex: 1;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--color-code-text);
  tab-size: 4;
}

.panel-code__body code {
  font-family: inherit;
}

.code-keyword { color: #e8a850; }
.code-func { color: #6dbf8b; }
.code-string { color: #e07b6c; }
.code-comment { color: #7b6f65; }

/* ===== PANEL 3: VISUAL/HEATMAP ===== */
.panel-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 1.5rem;
}

.panel-visual__grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 360px;
}

.heatmap-row {
  display: flex;
  gap: 8px;
}

.heatmap-cell {
  flex: 1;
  aspect-ratio: 1;
  border-radius: var(--radius-xs);
  background: color-mix(in srgb, var(--color-critical) calc(var(--intensity) * 100%), var(--color-bg) calc((1 - var(--intensity)) * 100%));
  opacity: 0.8;
  transition: transform 0.2s ease;
}

.heatmap-cell:hover {
  transform: scale(1.08);
  opacity: 1;
}

.panel-visual__legend {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.panel-visual__legend-bar {
  width: 120px;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, var(--color-bg), var(--color-critical));
}

.panel-visual__legend-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.panel-visual__caption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* ===== PANEL 4: METRICS ===== */
.panel-metrics {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-metrics__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.metric-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.metric-row__label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
  width: 60px;
  flex-shrink: 0;
}

.metric-row__bar {
  flex: 1;
  height: 10px;
  background: var(--color-bg);
  border-radius: 5px;
  overflow: hidden;
}

.metric-row__fill {
  height: 100%;
  width: var(--width);
  border-radius: 5px;
  transition: width 0.6s ease;
}

.metric-row__fill--critical { background: var(--color-critical); }
.metric-row__fill--high { background: var(--color-high); }
.metric-row__fill--medium { background: var(--color-medium); }
.metric-row__fill--low { background: var(--color-low); }

.metric-row__value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  width: 24px;
  text-align: right;
  flex-shrink: 0;
}

/* ===== PANEL 5: REPORT ===== */
.panel-report {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-report__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.panel-report__icon {
  font-size: 2rem;
}

.panel-report__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
}

.panel-report__meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.panel-report__section {
  background: var(--color-bg-light);
  border-radius: var(--radius-sm);
  padding: 1rem 1.125rem;
  border: 1px solid rgba(72, 58, 49, 0.06);
}

.panel-report__section-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.panel-report__section-text {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.panel-report__section-text code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--color-bg);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--color-accent);
}

.panel-report__severity {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 999px;
  display: inline-block;
}

.panel-report__severity--critical {
  background: rgba(192, 57, 43, 0.12);
  color: var(--color-critical);
}

.panel-report__severity--high {
  background: rgba(230, 126, 34, 0.12);
  color: var(--color-high);
}

/* ===== PANEL 6: CTA ===== */
.panel-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
  gap: 1rem;
}

.panel-cta__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(39, 174, 96, 0.12);
  color: var(--color-low);
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-cta__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.panel-cta__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 36ch;
  line-height: 1.6;
}

.panel-cta__stats {
  display: flex;
  gap: 2rem;
  margin: 0.75rem 0;
}

.panel-cta__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.panel-cta__stat-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
}

.panel-cta__stat-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.panel-cta__button {
  margin-top: 0.5rem;
  padding: 0.75rem 2rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.panel-cta__button:hover {
  background: var(--color-text);
  transform: translateY(-1px);
}

/* ===== FOOTER ===== */
.closing {
  text-align: center;
  padding: 6rem 2rem;
}

.closing__text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    padding: 4rem 1.5rem 2rem;
  }

  .scrolly {
    flex-direction: column;
    gap: 0;
    padding: 0 1rem 2rem;
  }

  .scrolly__sticky-wrap {
    position: sticky;
    top: 0;
    z-index: 10;
    height: 50vh;
    order: -1;
  }

  .scrolly__sticky {
    position: relative;
    top: 0;
    height: 100%;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .scrolly__steps {
    flex: 1;
  }

  .scrolly__step {
    min-height: 50vh;
    padding: 2rem 0;
  }

  .scrolly__heading {
    font-size: 1.35rem;
  }

  .scrolly__panel {
    padding: 1.25rem;
  }
}