/* ==========================================================================
   BRIEF — Amy II conversation overlay
   ========================================================================== */


/* --------------------------------------------------------------------------
   OVERLAY SHELL
   -------------------------------------------------------------------------- */

.brief-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-bone);
  z-index: 300;
  display: flex;
  flex-direction: column;
  visibility: hidden;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 350ms ease-in-out, visibility 350ms ease-in-out, transform 350ms ease-in-out;
}

.brief-overlay.is-open {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}


/* --------------------------------------------------------------------------
   HEADER
   -------------------------------------------------------------------------- */

.brief-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1.5rem var(--grid-margin);
  border-bottom: 1px solid var(--color-rule);
  flex-shrink: 0;
}

.brief-wordmark {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brief-wordmark__name {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-moss);
}

.brief-wordmark__sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: var(--tracking);
  color: var(--color-moss);
  opacity: 0.55;
}

.brief-counter {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.45;
  text-align: center;
}

.brief-close {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.5;
  justify-self: end;
  transition: opacity 150ms ease;
}

.brief-close:hover { opacity: 1; }


/* --------------------------------------------------------------------------
   BODY — scrollable conversation
   -------------------------------------------------------------------------- */

.brief-body {
  flex: 1;
  overflow-y: auto;
  padding: 3rem var(--grid-margin) 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 52rem;
}

/* Amy II message */
.brief-message {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.brief-message__label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.45;
}

.brief-message__text {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  white-space: pre-wrap;
}

/* User response — right-aligned */
.brief-response {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-self: flex-end;
  max-width: 75%;
}

.brief-response__label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.45;
  text-align: right;
}

.brief-response__text {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  text-align: right;
}


/* --------------------------------------------------------------------------
   FOOTER — input area
   -------------------------------------------------------------------------- */

.brief-footer {
  padding: 1.5rem var(--grid-margin) 2rem;
  border-top: 1px solid var(--color-rule);
  flex-shrink: 0;
  max-width: 52rem;
}

/* Freeform textarea */
.brief-textarea {
  width: 100%;
  min-height: 4.5rem;
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-rule);
  resize: none;
  outline: none;
  padding-bottom: 0.75rem;
}

.brief-textarea::placeholder {
  color: var(--color-forest);
  opacity: 0.3;
}

.brief-textarea:focus {
  border-bottom-color: var(--color-moss);
}

.brief-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.brief-submit {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.55;
  transition: opacity 150ms ease;
}

.brief-submit:hover { opacity: 1; }

/* Structured options */
.brief-options {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.brief-option {
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--color-rule);
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  text-align: left;
  transition: border-color 150ms ease, background-color 150ms ease;
  cursor: pointer;
}

.brief-option:hover {
  border-color: var(--color-moss);
  background-color: rgba(61, 74, 4, 0.04);
}

.brief-option--selected {
  border-color: var(--color-moss);
}

/* Back button */
.brief-back {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.4;
  transition: opacity 150ms ease;
}

.brief-back:hover { opacity: 0.9; }

.brief-back--hidden { visibility: hidden; }


/* --------------------------------------------------------------------------
   BRIEF OUTPUT
   -------------------------------------------------------------------------- */

.brief-output {
  display: flex;
  flex-direction: column;
  margin-top: 0.5rem;
}

.brief-output__prompt {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.6;
  margin-bottom: 2rem;
}

.brief-section {
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-rule);
}

.brief-section:last-child {
  border-bottom: 1px solid var(--color-rule);
}

.brief-section__label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.45;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.brief-section__content {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  outline: none;
  min-height: 1.4em;
}

.brief-section__content:focus {
  border-bottom: 1px solid var(--color-moss);
}


/* --------------------------------------------------------------------------
   ENDING SCREEN
   -------------------------------------------------------------------------- */

.brief-name-row {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.brief-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  flex: 1;
}

.brief-field__label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  opacity: 0.45;
  text-transform: uppercase;
}

.brief-field__input {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-rule);
  outline: none;
  padding-bottom: 0.5rem;
  width: 100%;
}

.brief-field__input:focus {
  border-bottom-color: var(--color-moss);
}

.brief-actions {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.5rem;
}

.brief-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-rule);
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  letter-spacing: var(--tracking);
  color: var(--color-forest);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease;
}

.brief-action:hover {
  border-color: var(--color-moss);
  background-color: rgba(61, 74, 4, 0.04);
}

.brief-consent {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking);
  line-height: var(--leading-mono);
  color: var(--color-forest);
  opacity: 0.45;
}


/* --------------------------------------------------------------------------
   SENT SCREEN
   -------------------------------------------------------------------------- */

.brief-sent {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 1rem;
}


/* --------------------------------------------------------------------------
   TYPING INDICATOR
   -------------------------------------------------------------------------- */

.brief-typing {
  display: flex;
  gap: 0.3rem;
  align-items: center;
  padding: 0.25rem 0;
}

.brief-typing__dot {
  width: 5px;
  height: 5px;
  background-color: var(--color-moss);
  border-radius: 50%;
  opacity: 0.4;
  animation: typing-pulse 1.2s ease-in-out infinite;
}

.brief-typing__dot:nth-child(2) { animation-delay: 0.2s; }
.brief-typing__dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-pulse {
  0%, 60%, 100% { transform: translateY(0);    opacity: 0.3; }
  30%            { transform: translateY(-4px); opacity: 1;   }
}


/* --------------------------------------------------------------------------
   MOBILE
   -------------------------------------------------------------------------- */

@media (max-width: 639px) {
  .brief-header {
    padding: 1.125rem var(--grid-margin);
  }

  .brief-body {
    padding: 2rem var(--grid-margin) 1.5rem;
    gap: 1.5rem;
  }

  .brief-footer {
    padding: 1.25rem var(--grid-margin) 1.5rem;
  }

  .brief-response {
    max-width: 90%;
  }

  .brief-name-row {
    flex-direction: column;
    gap: 1.25rem;
  }
}