/* Motion tokens & system animation primitives */
:root {
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-soft: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-micro: 200ms;
  --dur-hover: 280ms;
  --dur-reveal: 600ms;
  --dur-seq: 1100ms;
  --dur-open: 1600ms;
}

/* ==========================================================================
   Controlled System Opening (Header, Hero, Chips, Portrait Resolve)
   ========================================================================== */

[data-motion-opening="header"] {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 500ms var(--ease-soft), transform 500ms var(--ease-soft);
  will-change: opacity, transform;
}

[data-motion-opening="name"],
[data-motion-opening="role"],
[data-motion-opening="copy"],
[data-motion-opening="note"],
[data-motion-opening="actions"] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms var(--ease-soft), transform 600ms var(--ease-soft);
  will-change: opacity, transform;
}

[data-motion-opening="chips"] > li {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 450ms var(--ease-soft), transform 450ms var(--ease-soft);
  will-change: opacity, transform;
}

[data-motion-opening="portrait"] {
  opacity: 0;
  transform: scale(1.025);
  transition: opacity 1100ms var(--ease-soft), transform 1100ms var(--ease-soft);
  will-change: opacity, transform;
}

/* Activated Opening State */
body.is-page-ready [data-motion-opening="header"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 40ms;
}

body.is-page-ready [data-motion-opening="name"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 150ms;
}

body.is-page-ready [data-motion-opening="role"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 300ms;
}

body.is-page-ready [data-motion-opening="copy"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 450ms;
}

body.is-page-ready [data-motion-opening="note"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 550ms;
}

body.is-page-ready [data-motion-opening="actions"] {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 650ms;
}

body.is-page-ready [data-motion-opening="chips"] > li:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 750ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 810ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 870ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 930ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 990ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(6) { opacity: 1; transform: translateY(0); transition-delay: 1050ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(7) { opacity: 1; transform: translateY(0); transition-delay: 1110ms; }
body.is-page-ready [data-motion-opening="chips"] > li:nth-child(8) { opacity: 1; transform: translateY(0); transition-delay: 1170ms; }

body.is-page-ready [data-motion-opening="portrait"] {
  opacity: 1;
  transform: scale(1);
  transition-delay: 350ms;
}

/* ==========================================================================
   Active Narrative / Process HUD (Pattern B)
   ========================================================================== */

.narrative-hud {
  position: fixed;
  left: clamp(16px, 3vw, 36px);
  bottom: clamp(16px, 3vh, 32px);
  z-index: 40;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 300ms var(--ease-soft), transform 300ms var(--ease-soft);
}

.narrative-hud.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hud-inner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(1, 6, 17, 0.75);
  border: 1px solid rgba(190, 198, 205, 0.16);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.hud-marker {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cobalt);
  box-shadow: 0 0 8px var(--cobalt);
  transition: background 250ms var(--ease-soft), box-shadow 250ms var(--ease-soft);
}

.hud-index {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--silver);
  letter-spacing: 0.08em;
}

.hud-label {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--soft-white);
  letter-spacing: 0.1em;
}

@media (max-width: 640px) {
  .narrative-hud {
    left: 12px;
    bottom: 12px;
  }
  .hud-inner {
    padding: 4px 8px;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .narrative-hud {
    transition: none !important;
    transform: none !important;
  }
}

/* ==========================================================================
   About Section — System Path Activation (Pattern C)
   ========================================================================== */

.about-flow::before {
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-seq) var(--ease-soft);
  will-change: transform;
}

.about-flow.is-revealed::before {
  transform: scaleX(1);
}

.about-flow[data-motion="path-flow"] .flow-step {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 500ms var(--ease-soft),
    transform 500ms var(--ease-soft);
  will-change: opacity, transform;
}

.about-flow[data-motion="path-flow"] .flow-marker {
  transform: scale(0.85);
  transition:
    transform 400ms var(--ease-soft),
    border-color 400ms var(--ease-soft),
    box-shadow 400ms var(--ease-soft);
}

.about-flow[data-motion="path-flow"].is-revealed .flow-step {
  opacity: 1;
  transform: translateY(0);
}

.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(1) { transition-delay: 100ms; }
.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(2) { transition-delay: 350ms; }
.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(3) { transition-delay: 600ms; }
.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(4) { transition-delay: 850ms; }

.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(1) .flow-marker {
  transform: scale(1);
  border-color: var(--cobalt);
  box-shadow: 0 0 12px rgba(49, 92, 255, 0.25);
  transition-delay: 150ms;
}

.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(2) .flow-marker {
  transform: scale(1);
  border-color: #5b7fff;
  box-shadow: 0 0 12px rgba(91, 127, 255, 0.25);
  transition-delay: 400ms;
}

.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(3) .flow-marker {
  transform: scale(1);
  border-color: #00b884;
  box-shadow: 0 0 12px rgba(0, 184, 132, 0.25);
  transition-delay: 650ms;
}

.about-flow[data-motion="path-flow"].is-revealed .flow-step:nth-child(4) .flow-marker {
  transform: scale(1);
  border-color: var(--emerald);
  box-shadow: 0 0 16px rgba(0, 184, 132, 0.35);
  transition-delay: 900ms;
}

/* ==========================================================================
   Experience Section — Chapter Stagger & Micro-interactions
   ========================================================================== */

.chapter {
  transition:
    background 300ms var(--ease-soft),
    border-color 300ms var(--ease-soft);
}

.chapter::before {
  transition:
    transform 250ms var(--ease-soft),
    background-color 250ms var(--ease-soft),
    box-shadow 250ms var(--ease-soft);
}

.chapter:hover {
  background: rgba(7, 39, 74, 0.12);
}

.chapter:hover::before {
  transform: scale(1.4);
  background-color: var(--emerald);
  box-shadow: 0 0 8px var(--emerald);
}

.chapter-stats strong {
  display: inline-block;
  transition: transform 200ms var(--ease-soft), color 200ms var(--ease-soft);
}

.chapter:hover .chapter-stats strong {
  color: #9eb1ff;
  transform: translateY(-1px);
}

/* ==========================================================================
   Work Proof Cards — Restrained System & Evidence State Interactions
   ========================================================================== */

.proof-card {
  transition:
    background 320ms var(--ease-soft),
    border-color 320ms var(--ease-soft),
    box-shadow 320ms var(--ease-soft);
}

.proof-card::before {
  transition:
    width 500ms var(--ease-soft),
    background 500ms var(--ease-soft),
    box-shadow 500ms var(--ease-soft);
}

.proof-signals strong {
  transition:
    color 280ms var(--ease-soft),
    transform 280ms var(--ease-soft);
}

.proof-signals span {
  transition: color 280ms var(--ease-soft);
}

/* Hover & Viewport Focus States */
.proof-card:hover,
.proof-card:focus-within {
  border-color: rgba(49, 92, 255, 0.45);
  background: var(--surface-raised);
  box-shadow: 0 8px 24px rgba(1, 6, 17, 0.4);
}

.proof-card:hover::before,
.proof-card:focus-within::before {
  width: 100%;
  background: linear-gradient(90deg, var(--cobalt), var(--emerald));
  box-shadow: 0 0 8px rgba(49, 92, 255, 0.3);
}

.proof-card:hover .proof-signals strong,
.proof-card:focus-within .proof-signals strong {
  color: #c9d7ff;
  transform: translateY(-2px);
}

.proof-card:hover .proof-signals span,
.proof-card:focus-within .proof-signals span {
  color: var(--silver);
}

/* Featured Card Accentuation */
.proof-card--featured:hover::before,
.proof-card--featured:focus-within::before {
  background: linear-gradient(90deg, var(--emerald), var(--cobalt));
  box-shadow: 0 0 10px rgba(0, 184, 132, 0.35);
}

.proof-card--featured:hover .proof-signals strong,
.proof-card--featured:focus-within .proof-signals strong {
  color: #79f2c3;
}

/* Mobile Viewport / Touch Active State */
@media (hover: none) and (pointer: coarse) {
  .proof-grid.is-revealed .proof-card::before {
    width: 65%;
  }

  .proof-grid.is-revealed .proof-card--featured::before {
    width: 80%;
    background: linear-gradient(90deg, var(--emerald), var(--cobalt));
  }
}

/* ==========================================================================
   Micro-interactions (Nav, Buttons, Capability Chips, Cards, Links, Focus)
   ========================================================================== */

/* Nav links & action */
.nav-links a {
  transition: color var(--dur-micro) var(--ease-soft), opacity var(--dur-micro) var(--ease-soft);
}

.nav-links .nav-action {
  transition:
    background var(--dur-micro) var(--ease-soft),
    border-color var(--dur-micro) var(--ease-soft),
    color var(--dur-micro) var(--ease-soft),
    box-shadow var(--dur-micro) var(--ease-soft);
}

.nav-links .nav-action:hover {
  box-shadow: 0 0 10px rgba(49, 92, 255, 0.2);
}

/* Button micro-feedback */
.button {
  transition:
    background var(--dur-hover) var(--ease-soft),
    border-color var(--dur-hover) var(--ease-soft),
    color var(--dur-hover) var(--ease-soft),
    box-shadow var(--dur-hover) var(--ease-soft),
    transform var(--dur-micro) var(--ease-soft);
}

.button:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.button:active {
  transform: scale(0.985);
}

.button-primary:hover {
  box-shadow: 0 0 16px rgba(49, 92, 255, 0.35);
}

/* Capability chips interactive response */
.capabilities li {
  transition:
    border-color var(--dur-micro) var(--ease-soft),
    background var(--dur-micro) var(--ease-soft),
    color var(--dur-micro) var(--ease-soft),
    box-shadow var(--dur-micro) var(--ease-soft);
}

.capabilities li:hover {
  border-color: rgba(49, 92, 255, 0.45);
  background: rgba(49, 92, 255, 0.08);
  color: var(--soft-white);
  box-shadow: 0 0 8px rgba(49, 92, 255, 0.15);
}

/* Certificate cards micro-polish */
.certificate-card {
  transition:
    border-color var(--dur-hover) var(--ease-soft),
    background var(--dur-hover) var(--ease-soft),
    box-shadow var(--dur-hover) var(--ease-soft);
}

.certificate-card:hover {
  box-shadow: 0 6px 20px rgba(1, 6, 17, 0.5);
}

.certificate-image img {
  transition: transform var(--dur-hover) var(--ease-soft);
}

.certificate-card:hover .certificate-image img {
  transform: scale(1.02);
}

/* Text links */
.text-link {
  transition: color var(--dur-micro) var(--ease-soft), text-underline-offset var(--dur-micro) var(--ease-soft);
}

.text-link:hover {
  text-underline-offset: 6px;
}

/* Enhanced focus visibility */
:focus-visible {
  outline: 2px solid var(--emerald) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 8px rgba(0, 184, 132, 0.4) !important;
}

/* ==========================================================================
   Base Reveal & Stagger Primitives
   ========================================================================== */

[data-motion="reveal"],
[data-motion="stagger-group"] > * {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--dur-reveal) var(--ease-soft),
    transform var(--dur-reveal) var(--ease-soft);
  will-change: opacity, transform;
}

/* Activated state */
[data-motion="reveal"].is-revealed,
[data-motion="stagger-group"].is-revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay utilities */
[data-motion="stagger-group"].is-revealed > *:nth-child(1) { transition-delay: 60ms; }
[data-motion="stagger-group"].is-revealed > *:nth-child(2) { transition-delay: 120ms; }
[data-motion="stagger-group"].is-revealed > *:nth-child(3) { transition-delay: 180ms; }
[data-motion="stagger-group"].is-revealed > *:nth-child(4) { transition-delay: 240ms; }
[data-motion="stagger-group"].is-revealed > *:nth-child(5) { transition-delay: 300ms; }
[data-motion="stagger-group"].is-revealed > *:nth-child(6) { transition-delay: 360ms; }

/* Reduced motion accessibility fallback */
@media (prefers-reduced-motion: reduce) {
  [data-motion-opening],
  [data-motion-opening="chips"] > li,
  [data-motion="reveal"],
  [data-motion="stagger-group"] > *,
  [data-motion="path-flow"] .flow-step,
  .about-flow::before,
  body.is-page-ready [data-motion-opening],
  body.is-page-ready [data-motion-opening="chips"] > li,
  [data-motion="reveal"].is-revealed,
  [data-motion="stagger-group"].is-revealed > *,
  .about-flow.is-revealed::before,
  .about-flow[data-motion="path-flow"].is-revealed .flow-step {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
  }
}