/*
 * AI ChatMate — Widget Styles
 *
 * All selectors are prefixed .attendant- to avoid collisions with the host theme.
 * The brand colour is injected at runtime via wp_add_inline_style():
 *   :root { --attendant-color: #xxxxxx; }
 * This file provides the fallback value (#0073aa — WordPress blue).
 *
 * Structure:
 *  .attendant-launcher          — floating action button (always visible)
 *  .attendant-widget            — chat panel (hidden until .is-open added by JS)
 *  .attendant-widget__header    — coloured title bar + close button
 *  .attendant-widget__messages  — scrollable messages list
 *  .attendant-msg               — single message row (--user | --bot)
 *  .attendant-msg__bubble       — text bubble
 *  .attendant-msg__sources      — source link chips below a bot message
 *  .attendant-widget__footer    — textarea + send button
 */

/* ── CSS custom properties ───────────────────────────────────────────────── */
:root {
	--attendant-color:         #0073aa; /* brand colour — overridden inline */
	--attendant-bg:            #ffffff;
	--attendant-border:        #dcdcde;
	--attendant-user-bubble:   var(--attendant-color);
	--attendant-user-text:     #ffffff;
	--attendant-bot-bubble:    #f0f0f1;
	--attendant-bot-text:      #1d2327;
	--attendant-header-text:   #ffffff;
	--attendant-radius-lg:     16px;
	--attendant-radius-sm:     8px;
	--attendant-shadow:        0 8px 32px rgba(0, 0, 0, 0.22);
	--attendant-z:             999999;
	--attendant-launcher-size: 56px;
	--attendant-panel-width:   360px;
	--attendant-panel-height:  520px;
}

/* ── Launcher button ─────────────────────────────────────────────────────── */
.attendant-launcher {
	position:        fixed;
	bottom:          24px;
	right:           24px;
	z-index:         var(--attendant-z);
	width:           var(--attendant-launcher-size);
	height:          var(--attendant-launcher-size);
	border-radius:   50%;
	background:      var(--attendant-color);
	color:           var(--attendant-header-text);
	border:          none;
	cursor:          pointer;
	display:         flex;
	align-items:     center;
	justify-content: center;
	box-shadow:      var(--attendant-shadow);
	transition:      filter 0.2s, transform 0.15s;
	/* Ensure the button always floats above page content. */
	-webkit-tap-highlight-color: transparent;
}

.attendant-launcher:hover {
	filter:    brightness(0.87);
	transform: scale(1.06);
}

.attendant-launcher:active {
	transform: scale(0.97);
}

.attendant-launcher:focus-visible {
	outline:        2px solid var(--attendant-color);
	outline-offset: 3px;
}

/* ── Widget panel ────────────────────────────────────────────────────────── */
.attendant-widget {
	position:       fixed;
	bottom:         calc(var(--attendant-launcher-size) + 16px);
	right:          24px;
	z-index:        var(--attendant-z);
	width:          var(--attendant-panel-width);
	max-width:      calc(100vw - 32px);
	height:         var(--attendant-panel-height);
	max-height:     calc(100vh - 110px);
	border-radius:  var(--attendant-radius-lg);
	background:     var(--attendant-bg);
	box-shadow:     var(--attendant-shadow);
	border:         1px solid var(--attendant-border);
	/* Hidden by default — JS adds .is-open */
	display:        none;
	flex-direction: column;
	overflow:       hidden;
	transform-origin: bottom right;
}

.attendant-widget.is-open {
	display:   flex;
	animation: attendant-slide-up 0.2s ease-out both;
}

@keyframes attendant-slide-up {
	from { opacity: 0; transform: translateY(10px) scale(0.97); }
	to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.attendant-widget__header {
	display:         flex;
	align-items:     center;
	justify-content: space-between;
	padding:         13px 16px;
	background:      var(--attendant-color);
	color:           var(--attendant-header-text);
	flex-shrink:     0;
	gap:             8px;
}

.attendant-widget__title {
	font-weight:   600;
	font-size:     15px;
	white-space:   nowrap;
	overflow:      hidden;
	text-overflow: ellipsis;
	flex:          1;
}

.attendant-widget__close {
	background:    transparent;
	border:        none;
	cursor:        pointer;
	color:         inherit;
	padding:       4px;
	line-height:   1;
	border-radius: var(--attendant-radius-sm);
	display:       flex;
	flex-shrink:   0;
	opacity:       0.85;
	transition:    opacity 0.15s;
}

.attendant-widget__close:hover {
	opacity: 1;
}

.attendant-widget__close:focus-visible {
	outline: 2px solid rgba(255, 255, 255, 0.75);
}

/* ── Messages area ───────────────────────────────────────────────────────── */
.attendant-widget__messages {
	flex:            1;
	overflow-y:      auto;
	padding:         14px 12px;
	display:         flex;
	flex-direction:  column;
	gap:             10px;
	scroll-behavior: smooth;
}

/* Thin scrollbar — Webkit */
.attendant-widget__messages::-webkit-scrollbar       { width: 4px; }
.attendant-widget__messages::-webkit-scrollbar-track  { background: transparent; }
.attendant-widget__messages::-webkit-scrollbar-thumb  {
	background:    var(--attendant-border);
	border-radius: 2px;
}

/* ── Message rows ────────────────────────────────────────────────────────── */
.attendant-msg {
	display:        flex;
	flex-direction: column;
	max-width:      85%;
	/* Animation for each incoming message */
	animation:      attendant-msg-in 0.18s ease-out both;
}

@keyframes attendant-msg-in {
	from { opacity: 0; transform: translateY(6px); }
	to   { opacity: 1; transform: translateY(0);   }
}

.attendant-msg--user {
	align-self:  flex-end;
	align-items: flex-end;
}

.attendant-msg--bot {
	align-self:  flex-start;
	align-items: flex-start;
}

/* ── Message bubbles ─────────────────────────────────────────────────────── */
.attendant-msg__bubble {
	padding:       10px 13px;
	border-radius: var(--attendant-radius-lg);
	font-size:     14px;
	line-height:   1.55;
	word-break:    break-word;
}

.attendant-msg--user .attendant-msg__bubble {
	background:                var(--attendant-user-bubble);
	color:                     var(--attendant-user-text);
	border-bottom-right-radius: 4px;
}

.attendant-msg--bot .attendant-msg__bubble {
	background:               var(--attendant-bot-bubble);
	color:                    var(--attendant-bot-text);
	border-bottom-left-radius: 4px;
}

/* Inline formatting rendered by JS formatText() */
.attendant-msg__bubble strong { font-weight: 600; }
.attendant-msg__bubble br     { display: block; margin-bottom: 2px; }

/* ── Typing indicator ────────────────────────────────────────────────────── */
.attendant-msg--typing .attendant-msg__bubble {
	padding: 12px 14px;
}

.attendant-msg--typing .attendant-msg__bubble span {
	display:       inline-block;
	width:         7px;
	height:        7px;
	border-radius: 50%;
	background:    var(--attendant-color);
	margin:        0 2px;
	animation:     attendant-bounce 1.3s infinite ease-in-out;
	vertical-align: middle;
	opacity:       0.7;
}

.attendant-msg--typing .attendant-msg__bubble span:nth-child(2) { animation-delay: 0.22s; }
.attendant-msg--typing .attendant-msg__bubble span:nth-child(3) { animation-delay: 0.44s; }

@keyframes attendant-bounce {
	0%, 80%, 100% { transform: scale(0.65); opacity: 0.45; }
	40%           { transform: scale(1);    opacity: 1;    }
}

/* ── Source link chips ───────────────────────────────────────────────────── */
.attendant-msg__sources {
	margin-top: 6px;
	display:    flex;
	flex-wrap:  wrap;
	gap:        5px;
}

.attendant-msg__sources a {
	font-size:       11px;
	color:           var(--attendant-color);
	text-decoration: none;
	background:      rgba(0, 115, 170, 0.07);
	padding:         3px 8px;
	border-radius:   12px;
	border:          1px solid rgba(0, 115, 170, 0.18);
	white-space:     nowrap;
	overflow:        hidden;
	text-overflow:   ellipsis;
	max-width:       210px;
	transition:      background 0.15s;
}

.attendant-msg__sources a:hover {
	background:      rgba(0, 115, 170, 0.14);
	text-decoration: underline;
}

/* ── Footer / Input row ──────────────────────────────────────────────────── */
.attendant-widget__footer {
	display:      flex;
	align-items:  flex-end;
	gap:          8px;
	padding:      10px 12px;
	border-top:   1px solid var(--attendant-border);
	flex-shrink:  0;
	background:   var(--attendant-bg);
}

.attendant-widget__input {
	flex:          1;
	resize:        none;
	border:        1px solid var(--attendant-border);
	border-radius: var(--attendant-radius-sm);
	padding:       8px 10px;
	font-size:     14px;
	font-family:   inherit;
	line-height:   1.45;
	min-height:    36px;
	max-height:    120px;
	overflow-y:    auto;
	outline:       none;
	color:         var(--attendant-bot-text);
	background:    var(--attendant-bg);
	transition:    border-color 0.15s;
}

.attendant-widget__input:focus {
	border-color: var(--attendant-color);
}

.attendant-widget__input::placeholder {
	color:   #8c8f94;
	opacity: 1;
}

.attendant-widget__send {
	width:           36px;
	height:          36px;
	flex-shrink:     0;
	border-radius:   50%;
	background:      var(--attendant-color);
	color:           var(--attendant-header-text);
	border:          none;
	cursor:          pointer;
	display:         flex;
	align-items:     center;
	justify-content: center;
	transition:      filter 0.15s, opacity 0.15s;
}

.attendant-widget__send:hover:not(:disabled) {
	filter: brightness(0.87);
}

.attendant-widget__send:disabled {
	opacity: 0.45;
	cursor:  not-allowed;
}

.attendant-widget__send:focus-visible {
	outline:        2px solid var(--attendant-color);
	outline-offset: 2px;
}

/* ── Responsive: small screens (≤ 480 px) ───────────────────────────────── */
@media (max-width: 480px) {
	.attendant-widget {
		width:         100%;
		max-width:     100%;
		height:        74svh; /* svh falls back to vh on older browsers */
		height:        74vh;
		bottom:        0;
		right:         0;
		left:          0;
		border-radius: var(--attendant-radius-lg) var(--attendant-radius-lg) 0 0;
		border-left:   none;
		border-right:  none;
		border-bottom: none;
		transform-origin: bottom center;
	}

	.attendant-launcher {
		bottom: 16px;
		right:  16px;
	}
}

/* ── Header action buttons (history / new chat) ─────────────────────────── */
.attendant-widget__hbtn {
	background:    transparent;
	border:        none;
	cursor:        pointer;
	color:         inherit;
	padding:       4px;
	line-height:   1;
	border-radius: var(--attendant-radius-sm);
	display:       flex;
	flex-shrink:   0;
	opacity:       0.85;
	transition:    opacity 0.15s;
}

.attendant-widget__hbtn:hover {
	opacity: 1;
}

.attendant-widget__hbtn:focus-visible {
	outline: 2px solid rgba(255, 255, 255, 0.75);
}

/* ── Chat history panel ──────────────────────────────────────────────────── */
/* Hidden by default; .is-history on the widget swaps the conversation view
   for the history list (no absolute positioning — plain flex swap). */
.attendant-widget__history {
	display:    none;
	flex:       1;
	overflow-y: auto;
	background: var(--attendant-bg);
}

.attendant-widget.is-history .attendant-widget__history {
	display: block;
}

.attendant-widget.is-history .attendant-widget__messages,
.attendant-widget.is-history .attendant-widget__footer {
	display: none;
}

.attendant-widget__history-head {
	padding:       12px 16px 8px;
	font-weight:   600;
	font-size:     13px;
	color:         var(--attendant-bot-text);
	border-bottom: 1px solid var(--attendant-border);
}

.attendant-widget__history-list {
	list-style: none;
	margin:     0;
	padding:    4px 0;
}

.attendant-widget__history-list li {
	margin: 0;
}

.attendant-history-empty {
	padding:   16px;
	color:     #646970;
	font-size: 13px;
}

.attendant-history-item {
	display:    block;
	width:      100%;
	text-align: left;
	background: transparent;
	border:     none;
	cursor:     pointer;
	padding:    10px 16px;
	border-bottom: 1px solid var(--attendant-border);
	font:       inherit;
	color:      var(--attendant-bot-text);
}

.attendant-history-item:hover {
	background: var(--attendant-bot-bubble);
}

.attendant-history-item.is-current {
	background: var(--attendant-bot-bubble);
}

.attendant-history-item__label {
	display:       block;
	font-size:     13.5px;
	overflow:      hidden;
	text-overflow: ellipsis;
	white-space:   nowrap;
}

.attendant-history-item__meta {
	display:   block;
	font-size: 11.5px;
	color:     #8c8f94;
	margin-top: 2px;
}

/* ── Quick-reply chips ───────────────────────────────────────────────────── */
/* .attendant-chips sits directly inside .attendant-widget__messages (same flex column
   as .attendant-msg rows). Bot message rows use align-self:flex-start with no
   left margin, so chips use the same alignment — no extra padding-left. */
.attendant-chips {
	display:   flex;
	flex-wrap: wrap;
	gap:       8px;
	margin:    4px 0 8px;
	align-self: flex-start;
}

.attendant-chip {
	background:    var(--attendant-bg);
	border:        1px solid var(--attendant-color);
	color:         var(--attendant-color);
	border-radius: 999px;
	padding:       6px 14px;
	font-size:     13px;
	font-family:   inherit;
	cursor:        pointer;
	transition:    background 0.15s, color 0.15s;
}

.attendant-chip:hover {
	background: var(--attendant-color);
	color:      var(--attendant-header-text);
}

.attendant-chip:focus-visible {
	background: var(--attendant-color);
	color:      var(--attendant-header-text);
	outline:    2px solid var(--attendant-color);
	outline-offset: 2px;
}