/*
  ogen-chat.css
  Floating assistant button, chat panel, header, messages and composer.
*/

/* ============ Full-page chatbot shell ============ */
.ogen-app {
  width: min(100%, 980px);
  min-height: 100dvh;
  height: 100dvh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 255, 255, .92);
  border-inline: 1px solid var(--ogen-border);
  box-shadow: var(--ogen-shadow-sm);
}

.ogen-welcome {
  width: min(100%, 820px);
  margin: auto;
  padding: var(--space-6) 0 var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.ogen-welcome__greeting {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
}

.ogen-welcome__greeting .ogen-hero-title {
  max-width: 14ch;
}

.ogen-welcome__demos {
  padding-top: var(--space-5);
  border-top: 1px solid var(--ogen-border);
}

/* ============ Floating button ============ */
.ogen-floating {
  position: fixed;
  inset-inline-start: var(--space-6);
  bottom: var(--space-6);
  z-index: var(--ogen-z-floating);
}

.ogen-floating-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--ogen-surface);
  border: 1px solid var(--ogen-border);
  border-radius: var(--ogen-radius-pill);
  padding: var(--space-2);
  padding-inline-end: var(--space-2);
  box-shadow: var(--ogen-shadow-float);
  transition: transform var(--ogen-duration-fast) var(--ogen-ease),
              padding-inline-end var(--ogen-duration-normal) var(--ogen-ease);
  position: relative;
}

.ogen-floating-btn::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: var(--ogen-radius-pill);
  background: radial-gradient(circle, rgba(39, 198, 243, .28), transparent 70%);
  opacity: .6;
  animation: ogen-floating-breathe 8s var(--ogen-ease) infinite;
  z-index: -1;
}

@keyframes ogen-floating-breathe {
  0%, 100% { opacity: .35; transform: scale(1); }
  50%      { opacity: .65; transform: scale(1.08); }
}

.ogen-floating-btn:hover,
.ogen-floating-btn:focus-visible {
  transform: scale(1.03);
}

.ogen-floating-btn__label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 700;
  font-size: var(--ogen-fs-secondary);
  color: var(--ogen-navy-900);
  transition: max-width var(--ogen-duration-normal) var(--ogen-ease),
              margin var(--ogen-duration-normal) var(--ogen-ease);
}

.ogen-floating-btn:hover .ogen-floating-btn__label,
.ogen-floating-btn:focus-visible .ogen-floating-btn__label,
.ogen-floating-btn[data-expanded="true"] .ogen-floating-btn__label {
  max-width: 160px;
  margin-inline-end: var(--space-2);
}

@media (prefers-reduced-motion: reduce) {
  .ogen-floating-btn::before { animation: none; }
}

/* ============ Chat panel ============ */
.ogen-chat-panel {
  position: fixed;
  inset-inline-start: var(--space-6);
  bottom: calc(var(--space-6) + 72px);
  width: 460px;
  max-height: 82vh;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--ogen-border);
  border-radius: var(--ogen-radius-2xl);
  box-shadow: var(--ogen-shadow-float);
  z-index: var(--ogen-z-chat);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform-origin: bottom right;
  transition: opacity var(--ogen-duration-normal) var(--ogen-ease),
              transform var(--ogen-duration-normal) var(--ogen-ease);
}

.ogen-chat-panel[hidden] {
  display: flex;
  opacity: 0;
  transform: translateY(12px) scale(.98);
  pointer-events: none;
}

.ogen-chat-panel:not([hidden]) {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .ogen-chat-panel { transition: opacity var(--ogen-duration-fast) linear; }
  .ogen-chat-panel[hidden] { transform: none; }
}

/* ============ Chat header ============ */
.ogen-chat-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--ogen-border);
  flex: none;
  position: sticky;
  top: 0;
  z-index: 2;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
}

.ogen-chat-header__meta {
  flex: 1;
  min-width: 0;
}

.ogen-chat-header__title {
  font-weight: 800;
  font-size: var(--ogen-fs-secondary);
  color: var(--ogen-navy-900);
}

.ogen-chat-header__subtitle {
  font-size: 12px;
  color: var(--ogen-text-muted);
}

.ogen-chat-header__actions {
  display: flex;
  gap: var(--space-1);
}

.ogen-icon-btn {
  width: 36px;
  height: 36px;
  min-height: var(--ogen-touch-target);
  min-width: var(--ogen-touch-target);
  border-radius: var(--ogen-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ogen-text-secondary);
  transition: background var(--ogen-duration-fast) var(--ogen-ease);
}

.ogen-icon-btn:hover {
  background: var(--ogen-surface-blue);
  color: var(--ogen-navy-900);
}

/* ============ Conversation ============ */
.ogen-chat-conversation {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.ogen-msg-user {
  align-self: flex-start;
  max-width: 82%;
  background: var(--ogen-blue-100);
  color: var(--ogen-text);
  padding: var(--space-3) var(--space-4);
  border-radius: 18px 18px 4px 18px;
  font-size: var(--ogen-fs-secondary);
}

.ogen-answer {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.ogen-answer__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.ogen-answer__name {
  font-weight: 800;
  font-size: var(--ogen-fs-secondary);
  color: var(--ogen-navy-900);
}

.ogen-answer__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: var(--ogen-fs-secondary);
}

/* Checklists and drafted messages keep their line breaks */
.ogen-answer__body p {
  white-space: pre-line;
}

.ogen-answer__block-title {
  font-weight: 700;
  font-size: var(--ogen-fs-meta);
  color: var(--ogen-text-secondary);
  margin-bottom: var(--space-1);
}

.ogen-answer__steps {
  margin: 0;
  padding-inline-start: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* ============ Searching indicator ============ */
.ogen-searching {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.ogen-searching__text {
  font-size: var(--ogen-fs-secondary);
  color: var(--ogen-text-secondary);
}

/* ============ Composer ============ */
.ogen-composer {
  flex: none;
  border-top: 1px solid var(--ogen-border);
  padding: var(--space-4);
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  position: sticky;
  bottom: 0;
  z-index: 2;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(14px);
}

.ogen-composer__field {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--ogen-surface);
  border: 1px solid var(--ogen-border-strong);
  border-radius: var(--ogen-radius-md);
  min-height: 50px;
  padding: 0 var(--space-4);
  transition: border-color var(--ogen-duration-fast) var(--ogen-ease),
              box-shadow var(--ogen-duration-fast) var(--ogen-ease);
}

.ogen-composer__field:focus-within {
  border-color: var(--ogen-blue-500);
  box-shadow: 0 0 0 3px var(--ogen-blue-100);
}

.ogen-composer__textarea {
  flex: 1;
  border: 0;
  resize: none;
  background: transparent;
  font-size: var(--ogen-fs-body);
  line-height: 1.5;
  max-height: 120px;
  overflow-y: auto;
  padding: var(--space-3) 0;
}

.ogen-composer__textarea:focus { outline: none; }

.ogen-composer__send {
  width: 46px;
  height: 46px;
  border-radius: var(--ogen-radius-md);
  background: linear-gradient(90deg, var(--ogen-action-start), var(--ogen-action-end));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  transition: transform var(--ogen-duration-fast) var(--ogen-ease), opacity var(--ogen-duration-fast) var(--ogen-ease);
}

.ogen-composer__send:hover { transform: translateY(-1px); }
.ogen-composer__send:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ============ Overlay (mobile) ============ */
.ogen-chat-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 59, 102, .28);
  z-index: var(--ogen-z-overlay);
  display: none;
}

/* ============ 2026 product surface ============ */
.ogen-app {
  width: min(calc(100% - 48px), 1180px);
  background: rgba(255, 255, 255, .78);
  border-color: rgba(190, 212, 231, .78);
  box-shadow: 0 26px 90px rgba(13, 59, 102, .12);
  backdrop-filter: blur(24px) saturate(1.08);
  -webkit-backdrop-filter: blur(24px) saturate(1.08);
}

.ogen-chat-header {
  min-height: 76px;
  padding-inline: clamp(24px, 4vw, 54px);
  background: rgba(255, 255, 255, .7);
  border-bottom-color: rgba(190, 212, 231, .64);
}

.ogen-chat-header__title {
  font-family: var(--ogen-font-display);
  font-size: 18px;
  letter-spacing: -.02em;
}

.ogen-chat-header__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid rgba(190, 212, 231, .75);
  border-radius: var(--ogen-radius-pill);
  background: rgba(255, 255, 255, .68);
  color: var(--ogen-text-secondary);
  font-size: 12px;
  font-weight: 700;
}

.ogen-chat-header__status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ogen-teal-500);
  box-shadow: 0 0 0 4px rgba(0, 205, 187, .12);
}

.ogen-chat-conversation {
  padding: clamp(24px, 4.8vw, 58px);
  gap: 28px;
}

.ogen-welcome {
  width: min(100%, 1020px);
  padding: 0;
  gap: 24px;
}

.ogen-welcome__hero {
  direction: ltr;
  display: grid;
  grid-template-columns: minmax(270px, .82fr) minmax(0, 1.18fr);
  align-items: center;
  min-height: 340px;
  position: relative;
}

.ogen-welcome__hero::after {
  content: "";
  position: absolute;
  inset: 8% 0 7% 8%;
  z-index: -1;
  border-radius: 34px;
  background: rgba(238, 246, 255, .62);
  border: 1px solid rgba(216, 230, 242, .56);
}

.ogen-welcome__entity {
  display: grid;
  place-items: center;
  min-width: 0;
}

.ogen-welcome__copy {
  direction: rtl;
  max-width: 590px;
  padding: 48px 34px 48px 18px;
}

.ogen-welcome__eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--ogen-blue-600);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.ogen-welcome__copy .ogen-hero-title {
  max-width: 12ch;
  color: var(--ogen-navy-900);
  font-size: clamp(38px, 5vw, 64px);
}

.ogen-welcome__lede {
  max-width: 55ch;
  margin: 22px 0 0;
  color: var(--ogen-text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.ogen-welcome__tags {
  margin-top: 16px;
  max-width: 55ch;
}

.ogen-welcome__section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ogen-text-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
}

.ogen-welcome__section-head span:last-child { color: var(--ogen-blue-600); }

.ogen-welcome__demos {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
}

.ogen-welcome__demos .ogen-text-meta { margin: 0; white-space: nowrap; }

.ogen-answer,
.ogen-searching,
.ogen-state-panel {
  width: min(100%, 820px);
  margin-inline: auto;
}

.ogen-msg-user {
  width: fit-content;
  margin-inline: max(0px, calc((100% - 820px) / 2));
  background: #eaf4ff;
  border: 1px solid rgba(190, 212, 231, .65);
  border-radius: 18px 18px 5px 18px;
}

.ogen-answer__body {
  padding: 0 44px 0 0;
}

.ogen-composer {
  padding: 16px clamp(24px, 4vw, 54px) 22px;
  border-top-color: rgba(190, 212, 231, .55);
  background: rgba(255, 255, 255, .72);
  align-items: center;
}

.ogen-composer__field {
  min-height: 58px;
  border-radius: 20px;
  border-color: rgba(190, 212, 231, .92);
  background: rgba(255, 255, 255, .86);
  box-shadow: inset 0 1px 0 #fff, 0 12px 34px rgba(13, 59, 102, .07);
}

.ogen-composer__field:focus-within {
  box-shadow: inset 0 1px 0 #fff, 0 0 0 3px rgba(39, 136, 255, .12), 0 16px 36px rgba(13, 59, 102, .08);
}

.ogen-composer__send {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  box-shadow: 0 10px 26px rgba(18, 77, 122, .22);
}