/*********************************************************************
 *  ISABELLA — Phase 1 UI System
 *  COPYRIGHT © [2026] — SÉBASTIEN QUEVILLON — CODEX CINÉTIQUE
 *  Présence élégante, lumineuse, cinématographique.
 *********************************************************************/

/* ── Variables Isabella ─────────────────────────────────────────── */
:root {
  --isa-violet:       #7c3aed;
  --isa-violet-soft:  rgba(124,58,237,.18);
  --isa-violet-glow:  rgba(124,58,237,.35);
  --isa-cyan:         #06b6d4;
  --isa-cyan-soft:    rgba(6,182,212,.15);
  --isa-lavender:     #a78bfa;
  --isa-bg:           rgba(6,5,22,.96);
  --isa-surface:      rgba(14,10,40,.92);
  --isa-border:       rgba(124,58,237,.28);
  --isa-border-subtle:rgba(148,163,184,.12);
  --isa-text:         #f1f5f9;
  --isa-text-2:       #94a3b8;
  --isa-text-3:       #64748b;
  --isa-panel-w:      360px;
  --isa-z:            8800;
  --isa-radius:       16px;
  --isa-fab-size:     58px;
}

/* ── Keyframes ──────────────────────────────────────────────────── */
@keyframes isa-breathe {
  0%,100% { transform: scale(1);    opacity: .88; }
  50%      { transform: scale(1.06); opacity: 1;   }
}
@keyframes isa-halo-pulse {
  0%,100% { box-shadow: 0 0 0 0 var(--isa-violet-glow), 0 0 18px var(--isa-violet-soft); }
  50%      { box-shadow: 0 0 0 8px transparent, 0 0 32px var(--isa-violet-soft); }
}
@keyframes isa-ring-expand {
  0%   { transform: scale(1); opacity: .5; }
  100% { transform: scale(1.9); opacity: 0; }
}
@keyframes isa-slide-in {
  from { transform: translateX(110%); opacity: 0; }
  to   { transform: translateX(0);   opacity: 1; }
}
@keyframes isa-slide-out {
  from { transform: translateX(0);   opacity: 1; }
  to   { transform: translateX(110%); opacity: 0; }
}
@keyframes isa-msg-in {
  from { transform: translateY(10px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
@keyframes isa-fab-in {
  from { transform: scale(0) rotate(-20deg); opacity: 0; }
  to   { transform: scale(1) rotate(0deg);   opacity: 1; }
}
@keyframes isa-dot-bounce {
  0%,80%,100% { transform: translateY(0);    opacity: .4; }
  40%         { transform: translateY(-6px); opacity: 1;  }
}
@keyframes isa-glow-sweep {
  0%   { background-position: 0% 50%;   }
  100% { background-position: 200% 50%; }
}
@keyframes isa-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── FAB — Floating Action Button ───────────────────────────────── */
.isa-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: var(--isa-z);
  width: var(--isa-fab-size);
  height: var(--isa-fab-size);
  border-radius: 50%;
  border: 1.5px solid var(--isa-border);
  background: var(--isa-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .22s cubic-bezier(.34,1.56,.64,1),
              box-shadow .22s ease,
              border-color .22s ease;
  animation: isa-fab-in .5s cubic-bezier(.34,1.56,.64,1) both,
             isa-halo-pulse 3.2s ease-in-out 1s infinite;
  box-shadow: 0 0 18px var(--isa-violet-soft), 0 4px 24px rgba(0,0,0,.55);
}
.isa-fab:hover {
  transform: scale(1.12);
  border-color: var(--isa-violet);
  box-shadow: 0 0 28px var(--isa-violet-glow), 0 6px 28px rgba(0,0,0,.6);
}
.isa-fab:active { transform: scale(.95); }
.isa-fab.open {
  border-color: var(--isa-violet);
  background: rgba(124,58,237,.18);
}
.isa-fab-avatar {
  width: 38px;
  height: 38px;
  object-fit: contain;
  animation: isa-breathe 4s ease-in-out infinite;
  transition: transform .2s ease;
}
.isa-fab.open .isa-fab-avatar {
  transform: scale(.85);
  opacity: .7;
}

/* Pulse ring behind FAB */
.isa-fab-ring {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: calc(var(--isa-z) - 1);
  width: var(--isa-fab-size);
  height: var(--isa-fab-size);
  border-radius: 50%;
  border: 1.5px solid var(--isa-violet);
  pointer-events: none;
  animation: isa-ring-expand 3.2s ease-out 1s infinite;
  opacity: 0;
}

/* ── Panel ──────────────────────────────────────────────────────── */
.isa-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: calc(var(--isa-z) + 1);
  width: var(--isa-panel-w);
  max-width: 100vw;
  display: flex;
  flex-direction: column;
  background: var(--isa-bg);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-left: 1px solid var(--isa-border);
  box-shadow: -8px 0 48px rgba(0,0,0,.55), -2px 0 16px var(--isa-violet-soft);
  transform: translateX(110%);
  opacity: 0;
  pointer-events: none;
  transition: transform .35s cubic-bezier(.4,0,.2,1),
              opacity .35s ease;
}
.isa-panel.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: all;
}

/* ── Panel header ───────────────────────────────────────────────── */
.isa-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--isa-border-subtle);
  background: linear-gradient(180deg, rgba(124,58,237,.08) 0%, transparent 100%);
  flex-shrink: 0;
}
.isa-header-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}
.isa-header-avatar {
  width: 52px;
  height: 52px;
  object-fit: contain;
  animation: isa-breathe 4s ease-in-out infinite;
  filter: drop-shadow(0 0 8px var(--isa-violet-glow));
}
.isa-header-pulse {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--isa-violet);
  animation: isa-ring-expand 3.2s ease-out 0.5s infinite;
  opacity: 0;
}
.isa-header-info { flex: 1; min-width: 0; }
.isa-header-name {
  font-size: .95rem;
  font-weight: 800;
  letter-spacing: -.01em;
  background: linear-gradient(120deg, #a78bfa, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 3px;
}
.isa-header-role {
  font-size: .72rem;
  color: var(--isa-text-3);
  font-style: italic;
  letter-spacing: .01em;
}
.isa-header-status {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
}
.isa-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
}
.isa-status-label {
  font-size: .68rem;
  color: #10b981;
  font-weight: 600;
}
.isa-close {
  background: none;
  border: none;
  color: var(--isa-text-3);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
  padding: 6px 8px;
  border-radius: 8px;
  transition: color .15s, background .15s;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.isa-close:hover { color: var(--isa-text); background: rgba(255,255,255,.06); }

/* ── Phase badge ────────────────────────────────────────────────── */
.isa-phase-badge {
  margin: 0 18px 0;
  padding: 6px 12px;
  background: linear-gradient(135deg, rgba(124,58,237,.12), rgba(6,182,212,.08));
  border: 1px solid rgba(124,58,237,.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.isa-phase-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--isa-lavender);
  flex-shrink: 0;
}
.isa-phase-text {
  font-size: .68rem;
  color: var(--isa-lavender);
  font-weight: 600;
  letter-spacing: .03em;
}

/* ── Messages area ──────────────────────────────────────────────── */
.isa-msgs {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}
.isa-msgs::-webkit-scrollbar { width: 4px; }
.isa-msgs::-webkit-scrollbar-track { background: transparent; }
.isa-msgs::-webkit-scrollbar-thumb { background: rgba(124,58,237,.3); border-radius: 2px; }

/* ── Message bubbles ────────────────────────────────────────────── */
.isa-msg {
  max-width: 88%;
  animation: isa-msg-in .28s cubic-bezier(.4,0,.2,1) both;
}
.isa-msg.isa {
  align-self: flex-start;
}
.isa-msg.user {
  align-self: flex-end;
}
.isa-msg-bubble {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: .83rem;
  line-height: 1.55;
  position: relative;
}
.isa-msg.isa .isa-msg-bubble {
  background: rgba(124,58,237,.14);
  border: 1px solid rgba(124,58,237,.22);
  color: var(--isa-text);
  border-bottom-left-radius: 4px;
}
.isa-msg.user .isa-msg-bubble {
  background: linear-gradient(135deg, rgba(124,58,237,.28), rgba(6,182,212,.18));
  border: 1px solid rgba(124,58,237,.3);
  color: var(--isa-text);
  border-bottom-right-radius: 4px;
}
.isa-msg-time {
  font-size: .62rem;
  color: var(--isa-text-3);
  margin-top: 4px;
  padding: 0 4px;
}
.isa-msg.isa .isa-msg-time { text-align: left; }
.isa-msg.user .isa-msg-time { text-align: right; }

/* ── Typing indicator ───────────────────────────────────────────── */
.isa-typing {
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.isa-typing-bubble {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  background: rgba(124,58,237,.14);
  border: 1px solid rgba(124,58,237,.22);
  border-radius: 14px;
  border-bottom-left-radius: 4px;
}
.isa-typing-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--isa-lavender);
}
.isa-typing-dot:nth-child(1) { animation: isa-dot-bounce 1.2s ease-in-out 0s   infinite; }
.isa-typing-dot:nth-child(2) { animation: isa-dot-bounce 1.2s ease-in-out .2s  infinite; }
.isa-typing-dot:nth-child(3) { animation: isa-dot-bounce 1.2s ease-in-out .4s  infinite; }

/* ── Suggestions ────────────────────────────────────────────────── */
.isa-suggestions {
  padding: 8px 16px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
  border-top: 1px solid var(--isa-border-subtle);
}
.isa-suggestions::-webkit-scrollbar { display: none; }
.isa-suggestion-chip {
  white-space: nowrap;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--isa-border);
  background: var(--isa-violet-soft);
  color: var(--isa-lavender);
  font-size: .74rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s ease;
  font-family: inherit;
  flex-shrink: 0;
}
.isa-suggestion-chip:hover {
  background: rgba(124,58,237,.3);
  border-color: var(--isa-violet);
  color: #c4b5fd;
  transform: translateY(-1px);
}

/* ── Ready to transmit banner ───────────────────────────────────── */
.isa-transmit-banner {
  margin: 0 16px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(6,182,212,.12));
  border: 1px solid rgba(124,58,237,.35);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: isa-fade-in .3s ease both;
  flex-shrink: 0;
  margin-bottom: 8px;
}
.isa-transmit-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}
.isa-transmit-text {
  flex: 1;
  font-size: .78rem;
  color: var(--isa-lavender);
  line-height: 1.4;
}
.isa-transmit-btn {
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--isa-violet), #9333ea);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: .74rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: opacity .15s, transform .15s;
  flex-shrink: 0;
  white-space: nowrap;
}
.isa-transmit-btn:hover { opacity: .88; transform: translateY(-1px); }
.isa-transmit-btn:active { transform: scale(.96); }

/* ── Dossier confirmation ───────────────────────────────────────── */
.isa-dossier-card {
  margin: 0 16px 8px;
  padding: 14px 16px;
  background: rgba(16,185,129,.08);
  border: 1px solid rgba(16,185,129,.3);
  border-radius: 12px;
  animation: isa-fade-in .3s ease both;
  flex-shrink: 0;
}
.isa-dossier-label {
  font-size: .68rem;
  font-weight: 800;
  color: #10b981;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
}
.isa-dossier-id {
  font-size: .9rem;
  font-weight: 700;
  color: var(--isa-text);
  letter-spacing: .04em;
}
.isa-dossier-dept {
  font-size: .72rem;
  color: var(--isa-text-3);
  margin-top: 2px;
}

/* ── Input area ─────────────────────────────────────────────────── */
.isa-input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-top: 1px solid var(--isa-border-subtle);
  background: rgba(6,5,22,.6);
  flex-shrink: 0;
}
.isa-input {
  flex: 1;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--isa-border-subtle);
  border-radius: 22px;
  padding: 10px 16px;
  color: var(--isa-text);
  font-size: .83rem;
  font-family: inherit;
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.isa-input::placeholder { color: var(--isa-text-3); }
.isa-input:focus {
  border-color: var(--isa-violet);
  box-shadow: 0 0 0 2px var(--isa-violet-soft);
}
.isa-send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--isa-violet), var(--isa-cyan));
  color: white;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform .18s, opacity .18s;
  box-shadow: 0 2px 12px var(--isa-violet-glow);
}
.isa-send:hover { transform: scale(1.08); opacity: .9; }
.isa-send:active { transform: scale(.94); }
.isa-send:disabled { opacity: .4; cursor: not-allowed; }

/* ── Backdrop (mobile) ──────────────────────────────────────────── */
.isa-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--isa-z);
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}
.isa-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 520px) {
  :root { --isa-panel-w: 100vw; }
  .isa-fab { bottom: 20px; right: 20px; }
  .isa-fab-ring { bottom: 20px; right: 20px; }
}