/* =============================================================================
   ARKYN Floating Assistant — Stylesheet
   v1.0 · Vanilla CSS · No build step required
   ========================================================================== */

:root {
  --arkyn-coral-500: #E8642A;
  --arkyn-coral-600: #D4561F;
  --arkyn-coral-700: #B8501C;
  --arkyn-coral-800: #8E3D14;
  --arkyn-coral-50:  #FAECE7;
  --arkyn-cream-50:  #F5F1EA;
  --arkyn-cream-100: #EFEAE0;
  --arkyn-cream-200: #E1DBD0;
  --arkyn-ink:       #1A1A1A;
  --arkyn-ink-700:   #4A4640;
  --arkyn-ink-500:   #6B6660;
  --arkyn-ink-400:   #7A746A;
  --arkyn-ink-300:   #9A958C;
  --arkyn-success:   #2D9B5C;
  --arkyn-shadow:        0 2px 0 rgba(0, 0, 0, 0.12);
  --arkyn-shadow-hover:  0 3px 0 rgba(0, 0, 0, 0.14);
  --arkyn-font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
  --arkyn-font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
  --arkyn-z-backdrop: 9997;
  --arkyn-z-fab:      9998;
  --arkyn-z-panel:    9999;
}

/* FAB */
.arkyn-fab-wrap {
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom));
  right:  calc(24px + env(safe-area-inset-right));
  z-index: var(--arkyn-z-fab);
  transform-origin: bottom right;
  transition: transform 200ms ease-out, opacity 180ms ease-out;
}

.arkyn-fab-wrap.is-hidden {
  transform: scale(0.85);
  opacity: 0;
  pointer-events: none;
}

.arkyn-fab {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 18px 11px 14px;
  background: var(--arkyn-coral-500);
  color: #FFFFFF;
  border: 1px solid var(--arkyn-coral-700);
  border-radius: 999px;
  font: 500 13px/1 var(--arkyn-font-sans);
  box-shadow: var(--arkyn-shadow);
  cursor: pointer;
  overflow: hidden;
  margin: 0;
  transition:
    background 120ms ease-out,
    border-color 120ms ease-out,
    transform 120ms ease-out,
    box-shadow 120ms ease-out;
}

.arkyn-fab:hover {
  background: var(--arkyn-coral-600);
  border-color: var(--arkyn-coral-800);
  transform: translateY(-1px);
  box-shadow: var(--arkyn-shadow-hover);
}

.arkyn-fab:active {
  background: var(--arkyn-coral-700);
  transform: translateY(1px);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.arkyn-fab:focus-visible {
  outline: 2px solid var(--arkyn-ink);
  outline-offset: 3px;
}

.arkyn-fab::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 35%,
    rgba(255, 255, 255, 0.5) 50%,
    transparent 65%
  );
  transform: translateX(-100%);
  pointer-events: none;
  border-radius: inherit;
  animation: arkyn-shimmer 6s ease-in-out infinite;
}

@keyframes arkyn-shimmer {
  0%, 28%   { transform: translateX(-100%); }
  58%       { transform: translateX(120%); }
  100%      { transform: translateX(120%); }
}

.arkyn-fab__icon,
.arkyn-fab__label,
.arkyn-fab__kbd {
  position: relative;
  z-index: 1;
}

.arkyn-fab__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.arkyn-fab__kbd {
  margin-left: 6px;
  padding: 2px 6px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
  font: 9px/1 var(--arkyn-font-mono);
  letter-spacing: 0.08em;
  color: #FFFFFF;
}

/* Backdrop */
.arkyn-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.4);
  z-index: var(--arkyn-z-backdrop);
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms ease-out;
}

.arkyn-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* Panel */
.arkyn-panel-wrap {
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom));
  right:  calc(24px + env(safe-area-inset-right));
  z-index: var(--arkyn-z-panel);
  transform-origin: bottom right;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), opacity 200ms ease-out;
}

.arkyn-panel-wrap.is-hidden {
  transform: scale(0.92) translateY(8px);
  opacity: 0;
  pointer-events: none;
}

.arkyn-panel {
  position: relative;
  width: 360px;
  background: var(--arkyn-cream-50);
  border: 0.5px solid rgba(0, 0, 0, 0.28);
  border-radius: 4px;
  color: var(--arkyn-ink);
  display: flex;
  flex-direction: column;
  max-height: min(80vh, 640px);
}

.arkyn-panel__bracket {
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--arkyn-ink);
  pointer-events: none;
}
.arkyn-panel__bracket--tl { top: -2px;    left: -2px;   border-top: 1.5px solid;    border-left: 1.5px solid; }
.arkyn-panel__bracket--tr { top: -2px;    right: -2px;  border-top: 1.5px solid;    border-right: 1.5px solid; }
.arkyn-panel__bracket--bl { bottom: -2px; left: -2px;   border-bottom: 1.5px solid; border-left: 1.5px solid; }
.arkyn-panel__bracket--br { bottom: -2px; right: -2px;  border-bottom: 1.5px solid; border-right: 1.5px solid; }

.arkyn-panel__handle {
  display: none;
}

.arkyn-panel__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.12);
  font: 9px/1 var(--arkyn-font-mono);
  letter-spacing: 0.12em;
  color: var(--arkyn-ink);
  flex-shrink: 0;
}

.arkyn-panel__status {
  width: 6px;
  height: 6px;
  background: var(--arkyn-success);
  border-radius: 50%;
  flex-shrink: 0;
}

.arkyn-panel__title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.arkyn-panel__close {
  background: transparent;
  border: 0;
  font: 300 18px/1 var(--arkyn-font-sans);
  color: var(--arkyn-ink-500);
  cursor: pointer;
  padding: 0 4px;
  margin: 0;
  flex-shrink: 0;
}
.arkyn-panel__close:hover { color: var(--arkyn-ink); }
.arkyn-panel__close:focus-visible {
  outline: 2px solid var(--arkyn-ink);
  outline-offset: 2px;
  border-radius: 2px;
}

.arkyn-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px 4px;
  min-height: 100px;
  scroll-behavior: smooth;
}

.arkyn-message {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.arkyn-message__avatar {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--arkyn-ink);
  color: var(--arkyn-coral-500);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 500 11px/1 var(--arkyn-font-sans);
  letter-spacing: -0.02em;
}

.arkyn-message__body {
  font: 13px/1.5 var(--arkyn-font-sans);
  color: var(--arkyn-ink);
  flex: 1;
  padding-top: 3px;
  word-wrap: break-word;
}

.arkyn-message--user {
  flex-direction: row-reverse;
}

.arkyn-message--user .arkyn-message__avatar {
  background: var(--arkyn-coral-500);
  color: #FFFFFF;
}

.arkyn-message--user .arkyn-message__body {
  background: var(--arkyn-coral-50);
  border: 0.5px solid rgba(232, 100, 42, 0.2);
  border-radius: 6px;
  padding: 8px 10px;
}

.arkyn-message--typing .arkyn-message__body {
  display: inline-flex;
  gap: 3px;
  padding: 8px 0;
}
.arkyn-message--typing .arkyn-message__body::before,
.arkyn-message--typing .arkyn-message__body::after,
.arkyn-message--typing .arkyn-message__body span {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--arkyn-ink-400);
  border-radius: 50%;
  animation: arkyn-typing 1.2s ease-in-out infinite;
}
.arkyn-message--typing .arkyn-message__body::after { animation-delay: 0.15s; }
.arkyn-message--typing .arkyn-message__body span   { animation-delay: 0.3s; }
@keyframes arkyn-typing {
  0%, 60%, 100% { opacity: 0.3; transform: scale(0.85); }
  30%           { opacity: 1;   transform: scale(1); }
}

.arkyn-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px 33px;
  padding: 0 14px 0 0;
}

.arkyn-chip {
  font: 400 12px/1.2 var(--arkyn-font-sans);
  padding: 6px 11px;
  background: #FFFFFF;
  border: 0.5px solid rgba(0, 0, 0, 0.18);
  border-radius: 3px;
  color: var(--arkyn-ink);
  cursor: pointer;
  transition: background 100ms, border-color 100ms;
  margin: 0;
}
.arkyn-chip::after {
  content: " →";
  color: var(--arkyn-coral-500);
  font-weight: 500;
}
.arkyn-chip:hover {
  background: var(--arkyn-coral-50);
  border-color: var(--arkyn-coral-500);
}
.arkyn-chip:focus-visible {
  outline: 2px solid var(--arkyn-ink);
  outline-offset: 2px;
}

.arkyn-input {
  margin: 0 14px 12px;
  background: var(--arkyn-cream-100);
  border: 0.5px solid rgba(0, 0, 0, 0.22);
  border-radius: 4px;
  padding: 9px 11px 7px;
  transition: border-color 120ms;
  flex-shrink: 0;
}
.arkyn-input:focus-within {
  border-color: var(--arkyn-coral-500);
}

.arkyn-input__textarea {
  width: 100%;
  border: 0;
  background: transparent;
  resize: none;
  font: 13px/1.4 var(--arkyn-font-sans);
  color: var(--arkyn-ink);
  outline: none;
  min-height: 34px;
  max-height: 120px;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  display: block;
}
.arkyn-input__textarea::placeholder {
  color: var(--arkyn-ink-300);
}

.arkyn-input__tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  padding-top: 6px;
  border-top: 0.5px solid rgba(0, 0, 0, 0.08);
}

.arkyn-tool {
  font: 9px/1 var(--arkyn-font-mono);
  letter-spacing: 0.1em;
  color: var(--arkyn-ink-500);
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.arkyn-tool b { color: var(--arkyn-ink); font-weight: 500; }
.arkyn-tool:hover { color: var(--arkyn-ink); }
.arkyn-tool:focus-visible {
  outline: 2px solid var(--arkyn-ink);
  outline-offset: 2px;
  border-radius: 2px;
}

.arkyn-tool--send {
  margin-left: auto;
  width: 30px;
  height: 26px;
  background: var(--arkyn-coral-500);
  color: #FFFFFF;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 500 14px/1 var(--arkyn-font-sans);
  letter-spacing: 0;
}
.arkyn-tool--send:hover { background: var(--arkyn-coral-600); }
.arkyn-tool--send:disabled {
  background: var(--arkyn-ink-300);
  cursor: not-allowed;
}

/* Mobile */
@media (max-width: 768px) {
  .arkyn-fab-wrap {
    bottom: calc(20px + env(safe-area-inset-bottom));
    right:  calc(16px + env(safe-area-inset-right));
  }

  .arkyn-fab {
    width: 56px;
    height: 56px;
    padding: 0;
    border-radius: 50%;
    justify-content: center;
    gap: 0;
  }
  .arkyn-fab__icon { width: 24px; height: 24px; }
  .arkyn-fab__label, .arkyn-fab__kbd { display: none; }

  .arkyn-panel-wrap {
    inset: 0;
    bottom: 0;
    right: 0;
    transform-origin: bottom center;
    transition:
      transform 280ms cubic-bezier(0.32, 0.72, 0, 1),
      opacity 200ms ease-out;
    pointer-events: none;
  }
  .arkyn-panel-wrap.is-hidden {
    transform: translateY(100%);
    opacity: 1;
  }
  .arkyn-panel-wrap:not(.is-hidden) {
    pointer-events: auto;
  }

  .arkyn-panel {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 75dvh;
    max-height: 75dvh;
    border-radius: 18px 18px 0 0;
    border: 0;
    border-top: 0.5px solid rgba(0, 0, 0, 0.15);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .arkyn-panel__bracket { display: none; }

  .arkyn-panel__handle {
    display: block;
    align-self: center;
    width: 36px;
    height: 4px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 999px;
    margin: 8px 0 4px;
    flex-shrink: 0;
  }

  .arkyn-panel__header { padding: 8px 14px 10px; }
  .arkyn-message__body { font-size: 14px; }

  .arkyn-chips {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .arkyn-chip {
    font-size: 13px;
    padding: 8px 12px;
    text-align: left;
  }

  .arkyn-input__textarea { font-size: 16px; }
  .arkyn-tool--send { width: 36px; height: 32px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .arkyn-fab::before {
    animation: none;
    display: none;
  }
  .arkyn-fab-wrap,
  .arkyn-panel-wrap,
  .arkyn-backdrop {
    transition: opacity 100ms linear !important;
  }
  .arkyn-fab-wrap.is-hidden,
  .arkyn-panel-wrap.is-hidden {
    transform: none;
  }
  .arkyn-message--typing .arkyn-message__body::before,
  .arkyn-message--typing .arkyn-message__body::after,
  .arkyn-message--typing .arkyn-message__body span {
    animation: none;
    opacity: 0.6;
  }
}