/* ================================================================
   Lena AI — Chat Widget CSS
   Osadzalny widget chatbota AI
   ================================================================ */

:root {
  --lena-accent:    #6C63FF;
  --lena-accent2:   #8b5cf6;
  --lena-pink:      #ff63c8;
  --lena-bg:        #13131f;
  --lena-surface:   #1c1c2e;
  --lena-surface2:  #242438;
  --lena-text:      #e8e8f8;
  --lena-muted:     #8080a8;
  --lena-border:    rgba(108,99,255,.22);
  --lena-user-bg:   linear-gradient(135deg, #6C63FF, #8b5cf6);
  --lena-ai-bg:     #1e1e32;
  --lena-radius:    20px;
  --lena-w:         380px;
  --lena-h:         600px;
  --lena-z:         99999;
}

/* ── Reset inside widget ─────────────────────────────────── */
.lena-widget *,
.lena-trigger {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Zapobieganie nadpisywaniu czcionki ikon przez powyższy reset */
.lena-widget i[class^="fa-"],
.lena-trigger i[class^="fa-"] {
  font-family: "Font Awesome 6 Free" !important;
  font-weight: 900 !important;
}

/* ================================================================
   TRIGGER BUTTON
   ================================================================ */
.lena-trigger {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lena-accent), var(--lena-pink));
  border: none;
  cursor: pointer;
  z-index: var(--lena-z);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(108,99,255,.55), 0 0 0 0 rgba(108,99,255,.4);
  transition: transform .25s, box-shadow .25s;
  animation: lena-pulse 3s infinite;
  overflow: hidden;
}

.lena-trigger.pos-left { right: auto; left: 24px; }

.lena-trigger img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 50%;
  transition: opacity .2s;
}

.lena-trigger:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(108,99,255,.7);
  animation: none;
}

.lena-trigger.is-open img { opacity: .7; }

.lena-trigger-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  background: #ff4757;
  border-radius: 50%;
  border: 2px solid #fff;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #fff;
  font-weight: 700;
}

.lena-trigger-badge.visible { display: flex; }

@keyframes lena-pulse {
  0%,100% { box-shadow: 0 8px 24px rgba(108,99,255,.55), 0 0 0 0 rgba(108,99,255,.4); }
  70%      { box-shadow: 0 8px 24px rgba(108,99,255,.55), 0 0 0 14px rgba(108,99,255,0); }
}

/* ================================================================
   CHAT WINDOW
   ================================================================ */
.lena-widget {
  position: fixed;
  bottom: 96px;
  right: 24px;
  width: var(--lena-w);
  height: min(var(--lena-h), calc(100vh - 120px));
  max-width: calc(100vw - 48px);
  background: var(--lena-bg);
  border: 1px solid var(--lena-border);
  border-radius: var(--lena-radius);
  display: flex;
  flex-direction: column;
  z-index: calc(var(--lena-z) - 1);
  box-shadow: 0 24px 64px rgba(0,0,0,.65), 0 0 0 1px rgba(108,99,255,.12);
  overflow: hidden;
  transform-origin: bottom right;

  /* Hidden state */
  transform: scale(.85) translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), opacity .25s;
}

.lena-widget.pos-left { right: auto; left: 24px; transform-origin: bottom left; }

.lena-widget.is-open {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: all;
}

/* ── HEADER ─────────────────────────────────────────────── */
.lena-header {
  background: linear-gradient(135deg, #1a1a35, #13131f);
  border-bottom: 1px solid var(--lena-border);
  padding: 1rem 1rem 1rem 1.1rem;
  display: flex;
  align-items: center;
  gap: .85rem;
  flex-shrink: 0;
  position: relative;
}

.lena-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(108,99,255,.08), transparent);
  pointer-events: none;
}

.lena-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lena-accent), var(--lena-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(108,99,255,.4);
  overflow: hidden;
}

.lena-avatar img { width: 100%; height: 100%; object-fit: cover; }

.lena-header-info { flex: 1; min-width: 0; }

.lena-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--lena-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lena-status {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .75rem;
  color: var(--lena-muted);
  margin-top: 2px;
}

.lena-status-dot {
  width: 7px;
  height: 7px;
  background: #00d9b5;
  border-radius: 50%;
  box-shadow: 0 0 5px #00d9b5;
  animation: lena-blink 2s infinite;
}

@keyframes lena-blink {
  0%,100% { opacity: 1; }
  50%      { opacity: .4; }
}

.lena-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--lena-border);
  color: var(--lena-muted);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: .2s;
  flex-shrink: 0;
}

.lena-close:hover { background: rgba(255,71,87,.15); color: #ff4757; border-color: rgba(255,71,87,.4); }

/* ── MESSAGES AREA ─────────────────────────────────────── */
.lena-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  scroll-behavior: smooth;
}

.lena-messages::-webkit-scrollbar { width: 4px; }
.lena-messages::-webkit-scrollbar-track { background: transparent; }
.lena-messages::-webkit-scrollbar-thumb { background: rgba(108,99,255,.3); border-radius: 2px; }

/* Date separator */
.lena-date-sep {
  text-align: center;
  font-size: .72rem;
  color: var(--lena-muted);
  position: relative;
  margin: .25rem 0;
}
.lena-date-sep::before, .lena-date-sep::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 30%;
  height: 1px;
  background: var(--lena-border);
}
.lena-date-sep::before { left: 0; }
.lena-date-sep::after  { right: 0; }

/* Message wrapper */
.lena-msg {
  display: flex;
  gap: .5rem;
  max-width: 88%;
  animation: lena-slide-in .25s ease;
}

@keyframes lena-slide-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.lena-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.lena-msg.ai   { align-self: flex-start; }

.lena-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lena-accent), var(--lena-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  flex-shrink: 0;
  margin-top: auto;
}

.lena-bubble {
  padding: .7rem .95rem;
  border-radius: 18px;
  font-size: .9rem;
  line-height: 1.55;
  max-width: 100%;
  word-break: break-word;
  white-space: pre-wrap;
}

.lena-msg.user .lena-bubble {
  background: var(--lena-user-bg);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 14px rgba(108,99,255,.35);
}

.lena-msg.ai .lena-bubble {
  background: var(--lena-ai-bg);
  color: var(--lena-text);
  border: 1px solid var(--lena-border);
  border-bottom-left-radius: 4px;
}

.lena-msg.error .lena-bubble {
  background: rgba(255,71,87,.12);
  border-color: rgba(255,71,87,.35);
  color: #ff6b78;
}

.lena-msg-time {
  font-size: .68rem;
  color: var(--lena-muted);
  margin-top: 3px;
  text-align: right;
}

.lena-msg.ai .lena-msg-time { text-align: left; }

/* ── TYPING INDICATOR ──────────────────────────────────── */
.lena-typing {
  display: flex;
  align-items: center;
  gap: .5rem;
  align-self: flex-start;
  padding: .7rem 1rem;
  background: var(--lena-ai-bg);
  border: 1px solid var(--lena-border);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
}

.lena-typing-dots {
  display: flex;
  gap: 4px;
  align-items: center;
}

.lena-typing-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lena-accent);
  animation: lena-dot-bounce .9s infinite;
}

.lena-typing-dots span:nth-child(2) { animation-delay: .15s; }
.lena-typing-dots span:nth-child(3) { animation-delay: .3s; }

@keyframes lena-dot-bounce {
  0%,60%,100% { transform: translateY(0); opacity: .5; }
  30%          { transform: translateY(-7px); opacity: 1; }
}

/* ── INPUT AREA ────────────────────────────────────────── */
.lena-input-area {
  border-top: 1px solid var(--lena-border);
  padding: .85rem 1rem;
  background: var(--lena-surface);
  flex-shrink: 0;
}

.lena-input-row {
  display: flex;
  gap: .6rem;
  align-items: flex-end;
}

.lena-textarea {
  flex: 1;
  background: var(--lena-surface2);
  border: 1px solid var(--lena-border);
  border-radius: 14px;
  color: var(--lena-text);
  font-size: .9rem;
  font-family: inherit;
  padding: .65rem .95rem;
  resize: none;
  outline: none;
  min-height: 42px;
  max-height: 120px;
  line-height: 1.5;
  transition: border-color .2s, box-shadow .2s;
  overflow-y: auto;
}

.lena-textarea::placeholder { color: var(--lena-muted); }

.lena-textarea:focus {
  border-color: var(--lena-accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,.15);
}

.lena-send {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--lena-accent), var(--lena-accent2));
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: .2s;
  box-shadow: 0 4px 12px rgba(108,99,255,.4);
}

.lena-send:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(108,99,255,.55); }
.lena-send:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.lena-send svg { width: 18px; height: 18px; fill: #fff; }

.lena-input-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: .45rem;
  font-size: .68rem;
  color: var(--lena-muted);
  line-height: 1.3;
}

.lena-input-meta span:first-child {
  flex: 1;
  padding-right: 10px;
}

#lena-char-count {
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── FOOTER ────────────────────────────────────────────── */
.lena-footer {
  text-align: center;
  font-size: .68rem;
  color: var(--lena-muted);
  padding: .4rem 1rem .55rem;
  background: var(--lena-surface);
  border-top: 1px solid rgba(108,99,255,.08);
}

.lena-footer a { color: var(--lena-accent); text-decoration: none; }
.lena-footer a:hover { text-decoration: underline; }

/* ── WELCOME MSG ───────────────────────────────────────── */
.lena-welcome {
  text-align: center;
  padding: 1.5rem .5rem .5rem;
  color: var(--lena-muted);
  font-size: .82rem;
}

/* ── MOBILE ────────────────────────────────────────────── */
@media (max-width: 480px) {
  .lena-widget {
    bottom: 0 !important;
    right: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100dvh !important;
    border-radius: 0 !important;
    transform-origin: bottom center;
  }
  .lena-widget.is-open { transform: translateY(0); }
}