:root {
  --ia-ink: #16313f;
  --ia-primary: #0f4c5c;
  --ia-primary-strong: #0b3945;
  --ia-accent: #d9882b;
  --ia-expert: #76d6ff;
  --ia-expert-strong: #1f6f8e;
  --ia-soft: #f6f1e8;
  --ia-surface: rgba(255, 255, 255, 0.92);
  --ia-border: rgba(15, 76, 92, 0.16);
  --ia-muted: #5e6f79;
  --ia-success: #4b7f68;
  --ia-shadow: 0 18px 50px rgba(16, 53, 65, 0.12);
  --ia-radius-lg: 28px;
  --ia-radius-md: 18px;
  --ia-radius-sm: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(217, 136, 43, 0.18), transparent 28rem),
    radial-gradient(circle at top right, rgba(89, 141, 127, 0.16), transparent 24rem),
    linear-gradient(180deg, #f8f3ea 0%, #eef3f2 100%);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ia-ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

a {
  color: var(--ia-primary);
}

button,
textarea,
input {
  font: inherit;
}

.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;
}

.app-shell {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 1rem 0.9rem 1.4rem;
}

.topbar,
.hero-card,
.chat-panel,
.composer-wrap__inner {
  background: var(--ia-surface);
  backdrop-filter: blur(10px);
  box-shadow: var(--ia-shadow);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--ia-border);
  border-radius: 999px;
  padding: 0.8rem 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
  flex: 1 1 auto;
}

.brand__logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 50%;
  background: #fff;
  padding: 0.22rem;
  box-shadow: 0 8px 18px rgba(15, 76, 92, 0.16);
}

.brand__meta {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  text-align: left;
  justify-items: start;
  min-width: 0;
  white-space: nowrap;
}

.brand__meta strong {
  font-family: "Palatino Linotype", "Book Antiqua", serif;
  font-size: 1.22rem;
  color: var(--ia-primary);
}

.brand__meta span {
  color: var(--ia-muted);
  font-size: 0.92rem;
  white-space: nowrap;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.topbar__link {
  display: none;
  color: var(--ia-muted);
  text-decoration: none;
}

.ghost-button,
.suggestion-chip {
  appearance: none;
  border: 1px solid var(--ia-border);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ia-primary);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.ghost-button:hover,
.ghost-button:focus-visible,
.suggestion-chip:hover,
.suggestion-chip:focus-visible {
  transform: translateY(-1px);
  background: #fff;
  border-color: rgba(15, 76, 92, 0.28);
}

.ghost-button.is-confirmed {
  background: rgba(75, 127, 104, 0.14);
  border-color: rgba(75, 127, 104, 0.32);
  color: var(--ia-success);
  transform: translateY(-1px);
}

.layout {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.session-banner {
  border: 1px solid rgba(15, 76, 92, 0.16);
  border-radius: var(--ia-radius-md);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--ia-shadow);
  padding: 1rem 1.1rem;
}

.session-banner__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.session-banner__title {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ia-primary-strong);
}

.session-banner__text {
  margin: 0;
  color: var(--ia-muted);
  line-height: 1.5;
}

.session-banner__actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.session-banner__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--ia-border);
  text-decoration: none;
  font-weight: 700;
}

.session-banner__button--primary {
  background: var(--ia-primary);
  border-color: var(--ia-primary);
  color: #fff;
}

.session-banner__button--secondary {
  background: rgba(255, 255, 255, 0.82);
  color: var(--ia-primary);
}

.hero-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--ia-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.45);
  padding: 1.25rem;
  display: grid;
  gap: 1rem;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -3rem -5rem auto;
  width: 15rem;
  height: 15rem;
  background: radial-gradient(circle, rgba(217, 136, 43, 0.22), transparent 70%);
}

.eyebrow {
  margin: 0 0 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--ia-accent);
}

.hero-card h1 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", serif;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.08;
  color: var(--ia-primary-strong);
}

.hero-card__text {
  margin: 0.85rem 0 0;
  line-height: 1.6;
  color: var(--ia-muted);
  max-width: 42rem;
}

.hero-card__visual {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  min-height: 7rem;
}

.hero-card__visual img {
  width: min(100%, 220px);
  height: auto;
  filter: drop-shadow(0 18px 24px rgba(15, 76, 92, 0.12));
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.suggestion-chip {
  text-align: left;
  font-size: 0.95rem;
}

@media (max-width: 759px) {
  .suggestions {
    display: none;
  }
}

.chat-panel {
  border-radius: var(--ia-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.45);
  min-height: 48vh;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.chat-status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--ia-border);
  color: var(--ia-muted);
  font-size: 0.94rem;
}

.chat-status::before {
  content: "";
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 50%;
  background: var(--ia-success);
  box-shadow: 0 0 0 0 rgba(75, 127, 104, 0.34);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(75, 127, 104, 0.34); }
  70% { box-shadow: 0 0 0 10px rgba(75, 127, 104, 0); }
  100% { box-shadow: 0 0 0 0 rgba(75, 127, 104, 0); }
}

.chat-thread {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  overflow-y: auto;
  max-height: 58vh;
  scroll-behavior: smooth;
}

.message {
  max-width: min(100%, 52rem);
  animation: rise 0.2s ease;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.message--user {
  align-self: flex-end;
}

.message--assistant,
.message--system {
  align-self: flex-start;
}

.message__bubble {
  border-radius: 1.4rem;
  padding: 1rem 1.05rem;
}

.message--user .message__bubble {
  background: linear-gradient(135deg, var(--ia-primary), #195b6b);
  color: #fff;
  border-bottom-right-radius: 0.35rem;
}

.message--assistant .message__bubble {
  background: #fff;
  border: 1px solid rgba(15, 76, 92, 0.12);
  border-bottom-left-radius: 0.35rem;
}

.message--expert .message__bubble {
  background: linear-gradient(180deg, rgba(118, 214, 255, 0.2), rgba(255, 255, 255, 0.96));
  border: 1px solid rgba(31, 111, 142, 0.28);
  box-shadow: 0 10px 28px rgba(31, 111, 142, 0.12);
}

.message--system .message__bubble {
  background: rgba(15, 76, 92, 0.06);
  color: var(--ia-muted);
  font-size: 0.92rem;
}

.message__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border-radius: 999px;
  padding: 0.34rem 0.62rem;
  font-size: 0.77rem;
  font-weight: 700;
}

.meta-pill--engine {
  background: rgba(15, 76, 92, 0.08);
  color: var(--ia-primary);
}

.meta-pill--confidence {
  background: rgba(217, 136, 43, 0.12);
  color: #8d5f1a;
}

.meta-pill--success {
  background: rgba(75, 127, 104, 0.14);
  color: #2f6a51;
}

.meta-pill--warning {
  background: rgba(217, 136, 43, 0.14);
  color: #8d5f1a;
}

.meta-pill--secondary {
  background: rgba(94, 111, 121, 0.14);
  color: #4f5f67;
}

.meta-pill--primary {
  background: rgba(15, 76, 92, 0.12);
  color: var(--ia-primary);
}

.meta-pill--info {
  background: rgba(64, 155, 181, 0.14);
  color: #266f84;
}

.message__content p,
.message__content ul,
.message__content ol {
  margin: 0 0 0.8rem;
}

.message__content ul,
.message__content ol {
  padding-left: 1.25rem;
  list-style-position: outside;
}

.message__content ul {
  list-style-type: disc;
}

.message__content ol {
  list-style-type: decimal;
}

.message__content li {
  display: list-item;
}

.message__content li + li {
  margin-top: 0.28rem;
}

.message__content blockquote {
  margin: 0 0 0.8rem;
  padding: 0.2rem 0 0.2rem 0.9rem;
  border-left: 3px solid rgba(15, 76, 92, 0.18);
  color: var(--ia-muted);
}

.message__content h2,
.message__content h3 {
  margin: 1rem 0 0.55rem;
  color: var(--ia-primary-strong);
  font-size: 1rem;
}

.keypoints {
  margin-bottom: 1rem;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(15, 76, 92, 0.06), rgba(89, 141, 127, 0.08));
  border: 1px solid rgba(15, 76, 92, 0.1);
}

.keypoints strong {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--ia-primary);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.message__sections {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.section-card {
  border: 1px solid rgba(15, 76, 92, 0.1);
  border-radius: 1rem;
  padding: 0.9rem 1rem;
  background: rgba(249, 251, 250, 0.9);
}

.section-card__title {
  margin: 0 0 0.6rem;
  color: var(--ia-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}

.sources-list {
  display: grid;
  gap: 0.55rem;
}

.source-link {
  display: block;
  padding: 0.82rem 0.9rem;
  border-radius: 0.95rem;
  border: 1px solid rgba(15, 76, 92, 0.08);
  background: #fff;
  color: inherit;
  text-decoration: none;
}

.source-link:hover,
.source-link:focus-visible {
  border-color: rgba(15, 76, 92, 0.22);
}

.source-link__title {
  display: block;
  color: var(--ia-primary-strong);
  font-weight: 700;
  line-height: 1.35;
}

.source-link__url {
  display: block;
  margin-top: 0.18rem;
  color: var(--ia-muted);
  font-size: 0.84rem;
  overflow-wrap: anywhere;
}

.iatchoum-family-modal.d-none {
  display: none;
}

.iatchoum-family-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(9, 30, 36, 0.46);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.iatchoum-family-modal__dialog {
  width: min(100%, 760px);
  max-height: min(86vh, 820px);
  overflow: auto;
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 24px 64px rgba(16, 53, 65, 0.22);
  border: 1px solid rgba(15, 76, 92, 0.12);
  padding: 1rem 1.05rem;
}

.iatchoum-family-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.iatchoum-family-modal__header h2 {
  margin: 0;
  font-size: 1.06rem;
  color: var(--ia-primary-strong);
}

.iatchoum-family-modal__body {
  color: var(--ia-ink);
}

.iatchoum-family-link {
  appearance: none;
  border: 1px solid rgba(15, 76, 92, 0.18);
  background: rgba(15, 76, 92, 0.06);
  color: var(--ia-primary);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  cursor: pointer;
}

.iatchoum-thermo-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 0.4rem;
  border-radius: 999px;
  padding: 0.08rem 0.45rem;
  font-size: 0.76rem;
  background: rgba(217, 136, 43, 0.14);
  color: #8d5f1a;
}

.message__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.mini-button {
  border: 1px solid var(--ia-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ia-primary);
  padding: 0.56rem 0.85rem;
  cursor: pointer;
}

.mini-button--expert {
  border-color: rgba(31, 111, 142, 0.28);
  background: rgba(118, 214, 255, 0.18);
  color: var(--ia-expert-strong);
  font-weight: 700;
}

.mini-button--feedback {
  padding-inline: 0.72rem;
}

.mini-button--rated {
  border-color: rgba(40, 167, 69, 0.25);
  background: rgba(40, 167, 69, 0.1);
  color: #1f6b35;
}

.mini-button--selected {
  background: rgba(15, 76, 92, 0.12);
  border-color: rgba(15, 76, 92, 0.34);
}

.mini-button--submit {
  margin-top: 0.35rem;
}

.feedback-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  width: 100%;
}

.feedback-box__select,
.feedback-box__comment {
  width: 100%;
  border: 1px solid var(--ia-border);
  border-radius: 16px;
  padding: 0.8rem 0.9rem;
  color: var(--ia-ink);
  background: rgba(255, 255, 255, 0.92);
}

.feedback-box__comment {
  min-height: 76px;
  resize: vertical;
}

.placeholder {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ia-muted);
}

.placeholder__dots {
  display: inline-flex;
  gap: 0.3rem;
}

.placeholder__dots span {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: rgba(15, 76, 92, 0.34);
  animation: bounce 1.2s infinite;
}

.placeholder__dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.placeholder__dots span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.45; }
  40% { transform: translateY(-5px); opacity: 1; }
}

.composer-wrap {
  padding-top: 0.25rem;
}

.composer-wrap__inner {
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 1.7rem;
  padding: 0.9rem;
}

.composer-toolbar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.toolbar-hint,
.composer-disclaimer {
  color: var(--ia-muted);
  font-size: 0.84rem;
}

.attachment-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
}

.attachment-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.72rem;
  border-radius: 999px;
  background: rgba(15, 76, 92, 0.08);
  color: var(--ia-primary);
}

.attachment-pill button {
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.7rem;
  margin-top: 0.75rem;
}

#composer-input {
  width: 100%;
  min-height: 3.2rem;
  max-height: 11rem;
  resize: none;
  border: 1px solid var(--ia-border);
  border-radius: 1.25rem;
  padding: 0.95rem 1rem;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ia-ink);
  line-height: 1.48;
}

#composer-input:focus {
  outline: 2px solid rgba(15, 76, 92, 0.16);
  border-color: rgba(15, 76, 92, 0.28);
}

.send-button {
  align-self: end;
  border: 0;
  border-radius: 1.25rem;
  padding: 0.95rem 1.1rem;
  background: linear-gradient(135deg, var(--ia-accent), #b06f25);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.send-button:disabled {
  opacity: 0.5;
  cursor: wait;
}

.composer-disclaimer {
  margin: 0.75rem 0 0;
}

.btn-scrolltop {
  position: fixed;
  right: 1rem;
  top: var(--float-top, 78vh);
  z-index: 40;
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid rgba(15, 76, 92, 0.22);
  background: rgba(255, 255, 255, 0.94);
  color: var(--ia-primary);
  box-shadow: 0 10px 25px rgba(16, 53, 65, 0.16);
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.btn-scrolltop:hover,
.btn-scrolltop:focus-visible {
  background: #fff;
  color: var(--ia-primary-strong);
}

.btn-scrolltop.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (min-width: 760px) {
  .app-shell {
    padding: 1.4rem 1.2rem 1.7rem;
  }

  .topbar__link {
    display: inline-flex;
  }

  .hero-card {
    grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.8fr);
    align-items: end;
    padding: 1.55rem;
  }

  .chat-thread {
    padding: 1.2rem 1.25rem;
  }

  .composer-wrap__inner {
    padding: 1rem 1rem 0.95rem;
  }
}

@media (max-width: 759px) {
  .composer-wrap__inner {
    background: rgba(232, 236, 238, 0.94);
    border-color: rgba(92, 104, 112, 0.18);
  }

  .composer-toolbar,
  .toolbar-hint,
  .composer-disclaimer {
    color: #42545d;
  }

  #composer-input {
    background: rgba(255, 255, 255, 0.98);
    color: #18323f;
    border-color: rgba(79, 94, 104, 0.22);
  }

  #composer-input::placeholder {
    color: #58707c;
  }

  .ghost-button,
  .send-button {
    box-shadow: none;
  }

  .btn-scrolltop {
    right: 0.8rem;
    width: 2.8rem;
    height: 2.8rem;
  }
}