/* Phase 5 visual composition layer.
   API/security contracts remain in assistant.css + assistant.js; this file owns
   the product feel, uploaded art direction, rail assets and staged AI reveal. */

.assistant-page {
  background-color: #f4f1ea;
  background-image:
    linear-gradient(180deg, rgba(248, 246, 241, .76), rgba(244, 241, 234, .9)),
    url('/static/assistant/assets/backgrounds/assistant-bg-light.webp');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
}

.assistant-header,
.assistant-shell {
  position: relative;
  z-index: 1;
}

.assistant-header {
  direction: ltr;
  max-inline-size: 1280px;
  padding-block: 18px;
}

.assistant-brand {
  gap: 11px;
}

.assistant-brand-note {
  position: relative;
  margin-inline-start: 14px;
  padding-inline-start: 18px;
  color: var(--assistant-muted);
  font-size: .76rem;
  font-weight: 400;
  white-space: nowrap;
}

.assistant-brand-note::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block: 5px;
  inline-size: 1px;
  background: var(--assistant-border);
}

html[dir="rtl"] .assistant-brand-note {
  direction: rtl;
}

.assistant-languages {
  direction: ltr;
  background: color-mix(in srgb, var(--assistant-surface) 68%, transparent);
}

.assistant-shell {
  max-inline-size: 1110px;
  padding-block-start: clamp(24px, 4vw, 46px);
}

.assistant-intro {
  max-inline-size: 900px;
  margin-inline: auto;
  margin-block-end: 28px;
  text-align: center;
}

.assistant-intro h1 {
  font-size: clamp(2.35rem, 4.6vw, 3.65rem);
  line-height: 1.12;
}

.assistant-intro > p:last-child {
  max-inline-size: 68ch;
  margin-inline: auto;
}

.assistant-workspace {
  min-block-size: min(57vh, 540px);
}

.assistant-surface {
  min-block-size: min(57vh, 540px);
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

/* Right-side navigation rail */
.assistant-rail {
  right: -86px;
  top: 50%;
  transform: translateY(-50%);
  gap: 12px;
}

.assistant-rail-item {
  position: relative;
  inline-size: 54px;
  block-size: 54px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--assistant-surface) 90%, transparent);
  box-shadow: 0 12px 34px #00000012;
}

.assistant-rail-item:hover,
.assistant-rail-item:focus-visible {
  border-color: color-mix(in srgb, var(--assistant-accent) 45%, var(--assistant-border));
  color: var(--assistant-text);
}

.assistant-rail-item img {
  inline-size: 22px;
  block-size: 22px;
  opacity: .72;
}

.assistant-rail-item:hover img,
.assistant-rail-item:focus-visible img {
  opacity: 1;
}

.assistant-rail-label {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translate(5px, -50%);
  min-inline-size: max-content;
  padding: 6px 9px;
  border: 1px solid var(--assistant-border);
  border-radius: 10px;
  color: var(--assistant-text);
  background: color-mix(in srgb, var(--assistant-surface) 96%, transparent);
  box-shadow: 0 8px 28px #00000012;
  font-size: .72rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .16s ease, transform .16s ease;
}

.assistant-rail-item:hover .assistant-rail-label,
.assistant-rail-item:focus-visible .assistant-rail-label {
  opacity: 1;
  transform: translate(0, -50%);
}

/* Bottom-up answer stage */
.assistant-stage {
  min-block-size: 0;
  max-block-size: none;
  margin: 0;
  padding: 0 0 16px;
  overflow: visible;
  gap: 14px;
  justify-content: flex-end;
}

[data-assistant][data-state="idle"] .assistant-stage {
  display: none;
}

.assistant-query-echo {
  max-inline-size: min(650px, 74%);
  margin-inline-end: 12px;
  padding: 13px 18px;
  border-color: color-mix(in srgb, var(--assistant-accent) 34%, var(--assistant-border));
  border-radius: 18px 18px 7px 18px;
  background: color-mix(in srgb, var(--assistant-accent-soft) 72%, var(--assistant-surface));
  box-shadow: 0 12px 34px #00000010;
  text-align: start;
}

.assistant-answer-panel {
  position: relative;
  align-self: flex-start;
  inline-size: calc(100% - 74px);
  padding: 22px 24px 20px;
  overflow: hidden;
  border: 1px solid var(--assistant-border);
  border-radius: 26px;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--assistant-surface) 94%, transparent),
      color-mix(in srgb, var(--assistant-surface-2) 90%, transparent));
  box-shadow:
    0 24px 70px #0000001a,
    inset 0 1px 0 #ffffff09;
}

.assistant-answer-panel::before {
  content: "";
  position: absolute;
  inset-inline: 8%;
  inset-block-start: 0;
  block-size: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    #eab34d22 18%,
    #eab34d8f 50%,
    #ffd98bc2 56%,
    #eab34d42 78%,
    transparent
  );
  box-shadow: 0 0 22px #eab34d3b;
}

.assistant-status-row {
  margin-block-end: 6px;
  grid-template-columns: auto auto minmax(90px, 1fr);
}

.assistant-status-spark {
  inline-size: 25px;
  block-size: 25px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--assistant-accent) 25%, transparent);
  border-radius: 9px;
  background: var(--assistant-accent-soft);
}

.assistant-status-wave {
  max-inline-size: 360px;
}

.assistant-reply {
  max-inline-size: 760px;
  margin-block: 8px 16px;
  padding-inline-start: 30px;
  font-size: clamp(1rem, 1.6vw, 1.14rem);
}

.assistant-result-section {
  margin-block-start: 8px;
}

.assistant-result-section h2 {
  margin-block-end: 10px;
  text-transform: none;
  letter-spacing: 0;
  font-size: .76rem;
}

.assistant-results {
  gap: 9px;
}

/* JS owns the reveal order: reply first, then one card at a time. */
.assistant-result,
[data-assistant][data-state="revealing"] .assistant-result {
  opacity: 1;
  transform: none;
  animation: none;
}

.assistant-result.is-waiting {
  opacity: 0;
  transform: translateY(16px) scale(.992);
}

.assistant-result.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition:
    opacity .58s cubic-bezier(.22, 1, .36, 1),
    transform .58s cubic-bezier(.22, 1, .36, 1);
}

.assistant-card {
  padding: 15px 17px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--assistant-card) 94%, transparent);
  box-shadow: inset 0 1px 0 #ffffff08;
}

.assistant-card-title {
  font-size: 1rem;
}

.assistant-card-context {
  margin-block-start: 1px !important;
}

.assistant-card-facts {
  margin-block-start: 7px;
}

.assistant-card-phone {
  padding: 10px 13px;
  background: color-mix(in srgb, var(--assistant-surface-2) 88%, transparent);
}

/* Composer stays the visual anchor at the bottom. */
.assistant-composer {
  direction: ltr;
  margin-block-start: 0;
  padding: 13px 14px 10px;
  border-color: color-mix(in srgb, var(--assistant-accent) 31%, var(--assistant-border));
  border-radius: 24px;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--assistant-surface-2) 96%, transparent),
      color-mix(in srgb, var(--assistant-surface) 94%, transparent));
  box-shadow:
    0 0 0 1px #eab34d0b,
    0 18px 54px #00000022,
    0 0 44px #eab34d0c;
}

.assistant-composer-main {
  direction: ltr;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 13px;
}

.assistant-composer-mark {
  inline-size: 42px;
  block-size: 42px;
  border: 1px solid var(--assistant-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--assistant-surface) 78%, transparent);
}

.assistant-composer textarea {
  min-block-size: 66px;
  padding-block: 16px;
  resize: none;
}

.assistant-actions {
  direction: ltr;
}

.assistant-submit {
  min-inline-size: 118px;
  justify-content: center;
  background: linear-gradient(180deg, #f5c25d, var(--assistant-accent));
  box-shadow:
    0 11px 30px #eab34d24,
    inset 0 1px 0 #ffffff69;
}

.assistant-hint {
  direction: inherit;
  padding-inline: 56px 8px;
  text-align: start;
}

html[dir="rtl"] .assistant-hint {
  direction: rtl;
}

.assistant-examples {
  direction: ltr;
  margin-block-start: 12px;
  justify-content: center;
}

.assistant-examples button {
  direction: ltr;
  min-block-size: 36px;
  padding-inline: 14px;
  background: color-mix(in srgb, var(--assistant-surface) 55%, transparent);
}

html[dir="rtl"] .assistant-examples button {
  direction: rtl;
}

.assistant-footer {
  direction: inherit;
  margin-block-start: 8px;
  text-align: center;
  opacity: .75;
}

/* End-of-answer feedback, deliberately local-only for now. */
.assistant-feedback {
  margin-block-start: 18px;
  padding-block-start: 17px;
  border-block-start: 1px solid var(--assistant-border-soft);
  opacity: 0;
  transform: translateY(8px);
}

.assistant-feedback.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity .45s ease,
    transform .45s cubic-bezier(.22, 1, .36, 1);
}

.assistant-feedback-question {
  color: var(--assistant-text);
  font-size: .88rem;
  font-weight: 600;
}

.assistant-feedback-actions {
  margin-block-start: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.assistant-feedback-button {
  min-block-size: 40px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--assistant-border);
  border-radius: 12px;
  color: var(--assistant-muted);
  background: color-mix(in srgb, var(--assistant-surface) 70%, transparent);
  font-size: .76rem;
  transition:
    color .16s ease,
    border-color .16s ease,
    background-color .16s ease,
    transform .16s ease;
}

.assistant-feedback-button:hover,
.assistant-feedback-button:focus-visible,
.assistant-feedback-button[aria-pressed="true"] {
  color: var(--assistant-text);
  border-color: color-mix(in srgb, var(--assistant-accent) 45%, var(--assistant-border));
  background: var(--assistant-accent-soft);
}

.assistant-feedback-button:active {
  transform: translateY(1px);
}

.assistant-feedback-button img {
  inline-size: 18px;
  block-size: 18px;
  opacity: .72;
}

.assistant-feedback-status {
  min-block-size: 1.45em;
  margin-block-start: 7px !important;
  color: var(--assistant-muted);
  font-size: .72rem;
}

@media (prefers-color-scheme: dark) {
  .assistant-page {
    background-color: #101011;
    background-image:
      linear-gradient(180deg, rgba(16, 16, 17, .68), rgba(16, 16, 17, .88)),
      url('/static/assistant/assets/backgrounds/assistant-bg-dark.webp');
  }

  .assistant-answer-panel {
    background: linear-gradient(180deg, #1a1a1bd9, #151516ee);
    border-color: #32312f;
  }

  .assistant-composer {
    background: linear-gradient(180deg, #1c1c1dea, #171718f5);
  }

  .assistant-rail-item,
  .assistant-rail-label {
    background: #171718ed;
  }

  .assistant-rail-item img,
  .assistant-feedback-button img {
    filter: invert(1);
  }
}

@media (max-width: 1240px) {
  .assistant-workspace {
    min-block-size: auto;
  }

  .assistant-surface {
    min-block-size: 520px;
  }

  .assistant-rail {
    position: absolute;
    right: 0;
    top: -64px;
    transform: none;
    margin: 0;
    flex-direction: row;
  }

  .assistant-rail-item {
    inline-size: 46px;
    block-size: 46px;
  }

  .assistant-rail-label {
    display: none;
  }
}

@media (max-width: 760px) {
  .assistant-page {
    background-attachment: scroll;
    background-image:
      linear-gradient(180deg, rgba(248, 246, 241, .78), rgba(244, 241, 234, .92)),
      url('/static/assistant/assets/backgrounds/assistant-bg-light-mobile.webp');
  }

  .assistant-header {
    padding-inline: 16px;
  }

  .assistant-brand-note {
    display: none;
  }

  .assistant-shell {
    padding-block-start: 18px;
  }

  .assistant-intro {
    margin-block-end: 22px;
  }

  .assistant-intro h1 {
    font-size: clamp(2rem, 9vw, 2.8rem);
  }

  .assistant-surface {
    min-block-size: 440px;
  }

  .assistant-rail {
    position: static;
    transform: none;
    margin-block-end: 10px;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .assistant-stage {
    padding-block-end: 12px;
  }

  .assistant-query-echo {
    max-inline-size: 92%;
    margin-inline-end: 0;
  }

  .assistant-answer-panel {
    inline-size: 100%;
    padding: 17px 16px 15px;
    border-radius: 21px;
  }

  .assistant-composer {
    padding: 10px;
    border-radius: 20px;
  }

  .assistant-composer-main {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .assistant-composer-mark {
    display: none;
  }

  .assistant-composer textarea {
    min-block-size: 74px;
    padding-inline: 6px;
  }

  .assistant-submit {
    min-inline-size: 50px;
    padding-inline: 15px;
  }

  .assistant-submit > span:first-child {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .assistant-hint {
    padding-inline: 7px;
  }

  .assistant-examples {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-block-end: 4px;
  }

  .assistant-examples button {
    flex: 0 0 auto;
  }

  .assistant-feedback-actions {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-block-end: 2px;
  }

  .assistant-feedback-button {
    flex: 0 0 auto;
  }
}

@media (max-width: 760px) and (prefers-color-scheme: dark) {
  .assistant-page {
    background-image:
      linear-gradient(180deg, rgba(16, 16, 17, .7), rgba(16, 16, 17, .9)),
      url('/static/assistant/assets/backgrounds/assistant-bg-dark-mobile.webp');
  }
}

@media (prefers-reduced-motion: reduce) {
  .assistant-result.is-waiting,
  .assistant-result.is-visible,
  .assistant-feedback,
  .assistant-feedback.is-visible {
    transition: none !important;
    transform: none !important;
  }
}