/* =============================================================================
   COMPONENT: CHAT — "De Brouwmeester"
   Floating chat widget met glassmorphism paneel en brouwketel-trigger.

   Conventies: BEM, rem units, hover alleen binnen @media (hover: hover).
   Alle tokens (kleur/font/spacing) komen uit :root in main.css.
   ============================================================================= */

.chat {
  position: fixed;
  inset: auto var(--space-5) var(--space-5) auto;
  z-index: 9000;
  font-family: var(--font-body);
  color: var(--color-text);
}

/* Visually-hidden utility scoped to the chat component — used for labels that
   must exist for screen readers but shouldn't take up layout space. */
.chat__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Trigger (collapsed state) ------------------------------------- */

.chat__trigger {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-4);
  border: 1px solid var(--color-amber-border);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(17, 19, 21, 0.95), rgba(24, 26, 29, 0.95));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--color-text);
  cursor: pointer;
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(232, 168, 50, 0.05), 0 0 32px rgba(232, 168, 50, 0.15);
  transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.3, 1),
              box-shadow 0.35s ease,
              border-color 0.35s ease;
}

.chat__trigger:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 4px;
}

.chat__trigger-kettle {
  position: relative;
  width: 3.4rem;
  height: 3.4rem;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.chat__trigger-kettle svg {
  width: 100%;
  height: 100%;
  color: var(--color-amber);
  filter: drop-shadow(0 0 6px rgba(232, 168, 50, 0.5));
}

/* Steam above the kettle — three rising wisps */
.chat__trigger-steam {
  position: absolute;
  top: -0.6rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.4rem;
  pointer-events: none;
}

.chat__trigger-steam span {
  width: 0.4rem;
  height: 0.8rem;
  background: radial-gradient(circle, rgba(240, 190, 90, 0.7), transparent 70%);
  border-radius: var(--radius-full);
  opacity: 0;
}

.chat__trigger-label {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-align: left;
  line-height: 1.2;
}

.chat__trigger-title {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-style: italic;
  color: var(--color-amber-light);
}

.chat__trigger-sub {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-subtle);
}

@media (hover: hover) and (pointer: fine) {
  .chat__trigger:hover {
    transform: translateY(-2px);
    border-color: var(--color-amber);
    box-shadow: var(--shadow-md), 0 0 40px rgba(232, 168, 50, 0.3);
  }
}

/* Hide trigger when the panel is open */
.chat--open .chat__trigger {
  opacity: 0;
  transform: scale(0.85) translateY(20px);
  pointer-events: none;
}

/* ---------- Panel (expanded state) ---------------------------------------- */

.chat__panel {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 42rem;
  max-width: calc(100vw - var(--space-8));
  height: 70rem;
  max-height: calc(100vh - var(--space-8));
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-amber-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(17, 19, 21, 0.88), rgba(11, 13, 15, 0.94));
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  box-shadow: var(--shadow-md), 0 0 60px rgba(232, 168, 50, 0.18);
  overflow: hidden;
  transform-origin: bottom right;
  transform: scale(0.85) translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1),
              opacity 0.3s ease;
}

.chat--open .chat__panel {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* Header */
.chat__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  background: linear-gradient(180deg, rgba(232, 168, 50, 0.05), transparent);
}

.chat__header-icon {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  color: var(--color-amber);
  flex-shrink: 0;
}

.chat__header-icon svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 4px rgba(232, 168, 50, 0.4));
}

.chat__header-title {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.chat__header-name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-style: italic;
  color: var(--color-amber-light);
  line-height: 1;
}

.chat__header-status {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.chat__header-status::before {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  border-radius: var(--radius-full);
  background: #2ec4bb;
  box-shadow: 0 0 6px rgba(46, 196, 187, 0.8);
}

.chat__close {
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  line-height: 1;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.chat__close:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .chat__close:hover {
    background: var(--color-surface-raised);
    color: var(--color-text);
    border-color: var(--color-amber-border);
  }
}

/* Messages scroll area */
.chat__messages {
  flex-grow: 1;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.chat__messages::-webkit-scrollbar {
  width: 0.6rem;
}

.chat__messages::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.chat__message {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 85%;
  animation: chat-message-in 0.35s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}

.chat__message--user {
  align-self: flex-end;
  align-items: flex-end;
}

.chat__message--assistant {
  align-self: flex-start;
}

.chat__message--system {
  align-self: center;
  max-width: 100%;
  text-align: center;
}

.chat__bubble {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-normal);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.chat__message--user .chat__bubble {
  background: linear-gradient(135deg, rgba(232, 168, 50, 0.15), rgba(240, 190, 90, 0.08));
  border: 1px solid var(--color-amber-border);
  color: var(--color-text);
  border-bottom-right-radius: var(--radius-sm);
}

.chat__message--assistant .chat__bubble {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text);
  border-bottom-left-radius: var(--radius-sm);
}

.chat__message--system .chat__bubble {
  background: transparent;
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
}

/* Markdown styling inside bubbles */
.chat__bubble p {
  margin: 0;
}

.chat__bubble p + p {
  margin-top: var(--space-2);
}

.chat__bubble strong {
  color: var(--color-amber-light);
  font-weight: var(--font-weight-semibold);
}

.chat__bubble em {
  font-style: italic;
}

.chat__bubble code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-bg);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-amber-light);
}

.chat__bubble pre {
  margin: var(--space-2) 0 0;
  padding: var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1.5;
}

.chat__bubble pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-text);
}

.chat__bubble ul,
.chat__bubble ol {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-5);
}

.chat__bubble li + li {
  margin-top: 0.2rem;
}

.chat__bubble a {
  color: var(--color-amber-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Typewriter caret on streaming assistant message */
.chat__caret {
  display: inline-block;
  width: 0.2em;
  height: 1em;
  background: var(--color-amber);
  margin-left: 0.15em;
  vertical-align: text-bottom;
  animation: chat-caret-blink 1s steps(2) infinite;
}

/* Thinking indicator — three rising amber dots */
.chat__thinking {
  display: flex;
  gap: 0.4rem;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-sm);
  align-self: flex-start;
  animation: chat-message-in 0.35s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}

.chat__thinking span {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: var(--radius-full);
  background: var(--color-amber);
  opacity: 0.3;
}

/* Starter chips — live inside the messages scroll area so they scroll out of
   view naturally as the conversation grows. No extra padding since the parent
   already provides it. */
.chat__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.chat__chip {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 1.3rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  text-align: left;
}

.chat__chip:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .chat__chip:hover {
    background: var(--color-amber-dim);
    border-color: var(--color-amber-border);
    color: var(--color-text);
    transform: translateY(-1px);
  }
}

/* Intro block (appears above starter chips on empty state) */
.chat__intro {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-normal);
}

.chat__intro strong {
  color: var(--color-amber-light);
  font-weight: var(--font-weight-semibold);
}

/* Input form */
.chat__form {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
  background: rgba(11, 13, 15, 0.4);
}

.chat__input {
  flex-grow: 1;
  min-height: 4rem;
  max-height: 14rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-normal);
  resize: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.chat__input::placeholder {
  color: var(--color-text-subtle);
}

.chat__input:focus {
  outline: none;
  border-color: var(--color-amber);
  background: var(--color-surface-raised);
}

.chat__send {
  width: 4rem;
  height: 4rem;
  flex-shrink: 0;
  border: 1px solid var(--color-amber-border);
  border-radius: var(--radius-md);
  background: var(--color-amber-dim);
  color: var(--color-amber);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.chat__send svg {
  width: 2rem;
  height: 2rem;
}

.chat__send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.chat__send:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .chat__send:hover:not(:disabled) {
    background: var(--color-amber);
    color: var(--color-on-amber);
    transform: translateY(-1px);
  }
}

.chat__footer-hint {
  padding: 0 var(--space-5) var(--space-3);
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* ---------- Lead capture card (in-message) -------------------------------- */

.chat__lead {
  margin-top: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-amber-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(232, 168, 50, 0.08), rgba(46, 196, 187, 0.04));
  animation: chat-message-in 0.4s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}

.chat__lead-intro {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.8rem;
  color: var(--color-amber-light);
  line-height: var(--line-height-snug);
  margin: 0 0 var(--space-3);
}

.chat__lead-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.chat__lead-label {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-subtle);
}

.chat__lead-input,
.chat__lead-textarea {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-body-md);
  transition: border-color 0.2s ease;
}

.chat__lead-textarea {
  min-height: 6rem;
  resize: vertical;
}

.chat__lead-input:focus,
.chat__lead-textarea:focus {
  outline: none;
  border-color: var(--color-amber);
}

.chat__lead-submit {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-amber);
  color: var(--color-on-amber);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.chat__lead-submit:focus-visible {
  outline: 2px solid var(--color-amber-light);
  outline-offset: 2px;
}

.chat__lead-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (hover: hover) and (pointer: fine) {
  .chat__lead-submit:hover:not(:disabled) {
    background: var(--color-amber-light);
    transform: translateY(-1px);
  }
}

.chat__lead-feedback {
  margin-top: var(--space-2);
  font-size: var(--font-size-body-sm);
  color: var(--color-teal);
}

.chat__lead-feedback--error {
  color: #e87c32;
}

/* ---------- Responsive ---------------------------------------------------- */

@media (max-width: 540px) {
  /* Stretch the container edge-to-edge so the panel can use full width, but
     flex-align so the trigger pill stays pinned to the right. */
  .chat {
    inset: auto var(--space-3) var(--space-3) var(--space-3);
    display: flex;
    justify-content: flex-end;
  }

  .chat__panel {
    width: 100%;
    max-width: none;
    height: calc(100vh - var(--space-6));
    max-height: none;
  }

  .chat__trigger {
    padding: var(--space-3);
    border-radius: var(--radius-full);
  }

  .chat__trigger-label {
    display: none;
  }
}

/* ---------- Animations (reduced-motion safe) ------------------------------ */

@keyframes chat-message-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes chat-caret-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

@keyframes chat-steam {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0.8);
  }
  40% {
    opacity: 0.7;
  }
  100% {
    opacity: 0;
    transform: translateY(-1.2rem) scale(1.4);
  }
}

@keyframes chat-thinking-bounce {
  0%, 100% {
    transform: translateY(0);
    opacity: 0.3;
  }
  50% {
    transform: translateY(-0.4rem);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .chat__trigger-steam span {
    animation: chat-steam 2.4s ease-in-out infinite;
  }

  .chat__trigger-steam span:nth-child(2) {
    animation-delay: 0.8s;
  }

  .chat__trigger-steam span:nth-child(3) {
    animation-delay: 1.6s;
  }

  .chat__thinking span {
    animation: chat-thinking-bounce 1.2s ease-in-out infinite;
  }

  .chat__thinking span:nth-child(2) {
    animation-delay: 0.2s;
  }

  .chat__thinking span:nth-child(3) {
    animation-delay: 0.4s;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat__trigger,
  .chat__panel,
  .chat__message,
  .chat__lead,
  .chat__send,
  .chat__chip,
  .chat__close {
    transition: none;
    animation: none;
  }

  .chat__caret {
    animation: none;
    opacity: 1;
  }
}