/**
 * AI-tukichatin widget (#413).
 *
 * Kelluva painike + paneeli. Vain design-tokenit (base.css); tokenit adaptoivat
 * tummaan teemaan, joten erillisiä [data-theme="dark"]-sääntöjä ei tarvita.
 */

.rytkoset-chat {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

/* --- Kelluva painike ------------------------------------------------------ */

.rytkoset-chat__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.25rem;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: var(--color-text-inverted);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: background var(--transition-normal), transform var(--transition-hover);
}

.rytkoset-chat__toggle:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.rytkoset-chat__toggle-icon {
  font-size: 1.25rem;
  line-height: 1;
}

/* Kun paneeli on auki, painike voi jäädä näkyviin sen alle. */
.rytkoset-chat.is-open .rytkoset-chat__toggle {
  display: none;
}

/* --- Paneeli -------------------------------------------------------------- */

.rytkoset-chat__panel {
  display: flex;
  flex-direction: column;
  width: min(360px, calc(100vw - 2rem));
  max-height: min(70vh, 560px);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border-neutral);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-dropdown);
  animation: rytkoset-chat-in var(--transition-normal);
}

.rytkoset-chat__panel[hidden] {
  display: none;
}

@keyframes rytkoset-chat-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.rytkoset-chat__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--color-primary);
  color: var(--color-text-inverted);
}

.rytkoset-chat__title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.25;
  color: var(--color-text-inverted);
}

.rytkoset-chat__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-inverted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.rytkoset-chat__close:hover {
  background: rgba(255, 255, 255, 0.16);
}

.rytkoset-chat__disclaimer {
  margin: 0;
  padding: 0.6rem 1rem;
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border-neutral);
  color: var(--color-text-mute);
  font-size: 0.8rem;
  line-height: 1.4;
}

/* --- Viestiloki ----------------------------------------------------------- */

.rytkoset-chat__log {
  position: relative;
  flex: 1 1 auto;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1rem;
}

.rytkoset-chat__msg {
  max-width: 85%;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-medium);
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.rytkoset-chat__msg--assistant {
  align-self: flex-start;
  background: var(--color-surface-muted);
  color: var(--color-text);
}

/* Vastauksiin automaattisesti linkitetyt oman sivuston osoitteet (chat.js).
   Perivät kuplan tekstivärin, jotta kontrasti säilyy myös tummassa teemassa. */
.rytkoset-chat__msg a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.rytkoset-chat__msg a:hover,
.rytkoset-chat__msg a:focus-visible {
  text-decoration-thickness: 2px;
}

.rytkoset-chat__msg--user {
  align-self: flex-end;
  background: var(--color-primary);
  color: var(--color-text-inverted);
}

.rytkoset-chat__msg--error {
  align-self: flex-start;
  background: var(--color-surface-muted);
  color: var(--color-text);
  border-left: 3px solid var(--color-accent);
}

.rytkoset-chat__msg--typing {
  align-self: flex-start;
  background: var(--color-surface-muted);
  color: var(--color-text-mute);
  font-style: italic;
  animation: rytkoset-chat-pulse 1.2s ease-in-out infinite;
}

@keyframes rytkoset-chat-pulse {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

/* --- Syötelomake ---------------------------------------------------------- */

.rytkoset-chat__form {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--color-border-neutral);
  background: var(--color-surface);
}

.rytkoset-chat__input {
  flex: 1 1 auto;
  min-height: 44px;
  max-height: 140px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border-neutral);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.4;
  resize: none;
}

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

.rytkoset-chat__send {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: var(--radius-medium);
  background: var(--color-accent);
  color: var(--color-primary-deeper);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.rytkoset-chat__send:hover {
  background: var(--color-accent-hover);
}

.rytkoset-chat__send svg {
  width: 20px;
  height: 20px;
}

.rytkoset-chat__input:disabled,
.rytkoset-chat__send:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --- Näkyvä fokus --------------------------------------------------------- */

.rytkoset-chat__toggle:focus-visible,
.rytkoset-chat__close:focus-visible,
.rytkoset-chat__send:focus-visible,
.rytkoset-chat__input:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Mobiili: paneeli lähes koko ruudulle --------------------------------- */

@media (max-width: 640px) {
  /* Alkutila / fallback ilman visualViewport-tukea. chat.js pinnaa paneelin
     avattaessa tarkasti näkyvään viewporttiin (inline left/top/width/height)
     iOS Safarin virtuaalinäppäimistö- ja vaakavierityskummallisuuksien
     varalta — inline-tyylit korvaavat nämä arvot silloin automaattisesti. */
  .rytkoset-chat.is-open {
    inset: 0.5rem;
  }

  .rytkoset-chat__panel {
    width: 100%;
    max-height: none;
    height: 100%;
  }
}

/* --- Liikkeen vähennys ---------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .rytkoset-chat__toggle,
  .rytkoset-chat__panel,
  .rytkoset-chat__msg--typing {
    animation: none;
    transition: none;
  }

  .rytkoset-chat__toggle:hover {
    transform: none;
  }
}