/**
 * AI Chat Plugin — Frontend Widget Styles
 *
 * Uses CSS custom properties set by PHP via wp_add_inline_style.
 *
 * @package AIChatPlugin
 */

/* ── CSS custom-property defaults ───────────────────────────────────────── */

:root {
	--ai-chat-primary:       #193b7a;
	--ai-chat-secondary:     #d91f3d;
	--ai-chat-bg:            #f8fafc;
	--ai-chat-text:          #1e293b;
	--ai-chat-surface:       color-mix(in srgb, var(--ai-chat-bg) 94%, var(--ai-chat-text));
	--ai-chat-surface-alt:   color-mix(in srgb, var(--ai-chat-bg) 88%, var(--ai-chat-primary));
	--ai-chat-border:        color-mix(in srgb, var(--ai-chat-primary) 22%, var(--ai-chat-bg));
	--ai-chat-muted:         color-mix(in srgb, var(--ai-chat-text) 64%, var(--ai-chat-bg));
	--ai-chat-header-bg:     var(--ai-chat-surface);
	--ai-chat-header-text:   var(--ai-chat-text);
	--ai-chat-bubble-bg:     var(--ai-chat-primary);
	--ai-chat-on-primary:    #fff;
	--ai-chat-on-secondary:  #fff;
	--ai-chat-bubble-icon:   var(--ai-chat-on-primary);
	--ai-chat-status:        #22c55e;
	--ai-chat-error:         #b91c1c;
	--ai-chat-error-bg:      color-mix(in srgb, var(--ai-chat-error) 12%, var(--ai-chat-bg));
	--ai-chat-input-bg:      var(--ai-chat-bg);
	--ai-chat-user-bg:       var(--ai-chat-primary);
	--ai-chat-user-text:     var(--ai-chat-on-primary);
	--ai-chat-bot-bg:        var(--ai-chat-surface);
	--ai-chat-question-bg:   var(--ai-chat-surface);
	--ai-chat-question-text: var(--ai-chat-primary);
	--ai-chat-link:          var(--ai-chat-primary);
	--ai-chat-radius:        10px;
	--ai-chat-bubble-size:   55px;
	--ai-chat-panel-w:       380px;
	--ai-chat-panel-h:       600px;
	--ai-chat-shadow:        0 8px 32px color-mix(in srgb, var(--ai-chat-primary) 18%, transparent);
	--ai-chat-z:             99999;
	--ai-chat-transition:    .3s cubic-bezier(.4, 0, .2, 1);
	--ai-chat-bubble-right:  24px;
	--ai-chat-bubble-left:   auto;
	--ai-chat-bubble-radius: 50%;
	--ai-chat-bubble-border-width: 0px;
	--ai-chat-bubble-border-color: #ffffff;
}

/* ── Floating bubble ─────────────────────────────────────────────────────── */

.ai-chat-bubble {
	position:         fixed;
	bottom:           24px;
	right:            var(--ai-chat-bubble-right) !important;
	left:             var(--ai-chat-bubble-left) !important;
	width:            var(--ai-chat-bubble-size) !important;
	height:           var(--ai-chat-bubble-size) !important;
	border-radius:    var(--ai-chat-bubble-radius) !important;
	background:       var(--ai-chat-bubble-bg) !important;
	color:            var(--ai-chat-bubble-icon) !important;
	border:           var(--ai-chat-bubble-border-width) solid var(--ai-chat-bubble-border-color) !important;
	cursor:           pointer !important;
	display:          flex !important;
	align-items:      center !important;
	justify-content:  center !important;
	box-shadow:       var(--ai-chat-shadow) !important;
	z-index:          var(--ai-chat-z) !important;
	transition:       transform var(--ai-chat-transition), box-shadow var(--ai-chat-transition) !important;
	padding:          0.4rem !important;
	outline:          none !important;
	-webkit-tap-highlight-color: transparent !important;
}

.ai-chat-bubble:hover,
.ai-chat-bubble:focus-visible {
	transform:   scale(1.08);
	box-shadow:  0 18px 44px color-mix(in srgb, var(--ai-chat-primary) 32%, transparent) !important;
}

.ai-chat-bubble:focus-visible {
	outline:        2px solid var(--ai-chat-secondary) !important;
	outline-offset: 3px !important;
}

.ai-chat-bubble:active {
	transform: scale(.95);
}

.ai-chat-bubble svg {
	pointer-events: none;
	display:        block;
}

.ai-chat-bubble-icon-img {
	width:          100%;
	height:         100%;
	object-fit:     contain;
	display:        block;
	pointer-events: none;
}

/* ── Panel ───────────────────────────────────────────────────────────────── */

.ai-chat-panel {
	position:        fixed;
	bottom:          calc(var(--ai-chat-bubble-size) + 16px);
	right:           var(--ai-chat-bubble-right);
	left:            var(--ai-chat-bubble-left);
	width:           var(--ai-chat-panel-w);
	max-height:      var(--ai-chat-panel-h);
	background:      var(--ai-chat-bg);
	border-radius:   var(--ai-chat-radius);
	box-shadow:      0 20px 54px color-mix(in srgb, var(--ai-chat-primary) 20%, transparent);
	border:          1px solid var(--ai-chat-border);
	z-index:         var(--ai-chat-z);
	display:         flex;
	flex-direction:  column;
	overflow:        hidden;
	transform:       translateY(16px) scale(.97);
	opacity:         0;
	pointer-events:  none;
	transition:      transform var(--ai-chat-transition),
	                 opacity   var(--ai-chat-transition);
	font-family:     -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
	                 "Helvetica Neue", Arial, sans-serif;
	font-size:       15px;
	color:           var(--ai-chat-text);
	line-height:     1.5;
}

.ai-chat-panel--open {
	transform:      translateY(0) scale(1);
	opacity:        1;
	pointer-events: auto;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.ai-chat-header {
	color:           var(--ai-chat-header-text);
	background:      var(--ai-chat-header-bg);
	border-top:     3px solid var(--ai-chat-secondary);
	border-bottom:   1px solid var(--ai-chat-border);
	padding:         12px 14px 14px;
	display:         flex;
	align-items:     center;
	justify-content: space-between;
	gap:             12px;
	flex-shrink:     0;
}

.ai-chat-header-brand {
	display:     flex;
	align-items: center;
	gap:         12px;
	min-width:   0;
}

.ai-chat-logo {
	width:         42px;
	height:        42px;
	border-radius: var(--ai-chat-radius);
	object-fit:    cover;
	background:    var(--ai-chat-surface);
	flex-shrink:   0;
	border:        2px solid var(--ai-chat-border);
	padding:       6px;
	box-shadow:    0 6px 16px color-mix(in srgb, var(--ai-chat-primary) 14%, transparent);
}

.ai-chat-logo-placeholder {
	width:         42px;
	height:        42px;
	border-radius: var(--ai-chat-radius);
	background:    var(--ai-chat-surface-alt);
	color:         var(--ai-chat-primary);
	flex-shrink:   0;
	display:       flex;
	align-items:   center;
	justify-content: center;
	border:        2px solid var(--ai-chat-border);
	box-shadow:    0 6px 16px color-mix(in srgb, var(--ai-chat-primary) 14%, transparent);
}

.ai-chat-logo-placeholder svg {
	width:  20px;
	height: 20px;
	display: block;
}

.ai-chat-logo--bubble-icon {
	padding: 5px;
}

.ai-chat-logo-svg svg {
	width:  100%;
	height: 100%;
	display: block;
}

.ai-chat-header-info {
	display:         flex;
	flex-direction:  column;
	min-width:       0;
}

.ai-chat-company-name {
	font-size:     18px;
	font-weight:   700;
	line-height:   1.2;
	white-space:   nowrap;
	overflow:      hidden;
	text-overflow: ellipsis;
	color:         var(--ai-chat-header-text);
}

.ai-chat-company-subtitle {
	font-size:     11px;
	opacity:       .95;
	white-space:   nowrap;
	overflow:      hidden;
	text-overflow: ellipsis;
	margin-top:    2px;
	text-transform: uppercase;
	letter-spacing: .08em;
	color:          var(--ai-chat-muted);
}

.ai-chat-header-actions {
	display:     flex;
	align-items: center;
	gap:         10px;
	flex-shrink: 0;
}

.ai-chat-online-badge {
	display:     flex;
	align-items: center;
	gap:         7px;
	font-size:   12px;
	opacity:     1;
	white-space: nowrap;
	background: var(--ai-chat-surface-alt);
	color: var(--ai-chat-text);
	padding:     6px 12px;
	border-radius: var(--ai-chat-radius);
	border:      1px solid var(--ai-chat-border);
}

.ai-chat-online-dot {
	width:         8px;
	height:        8px;
	border-radius: 50%;
	background:    var(--ai-chat-status);
	display:       inline-block;
	animation:     ai-chat-pulse 2s infinite;
}

@keyframes ai-chat-pulse {
	0%, 100% { opacity: 1; }
	50%       { opacity: .5; }
}

.ai-chat-close-btn {
	background:      var(--ai-chat-surface-alt) !important;
	border:          1px solid var(--ai-chat-border) !important;
	color:           var(--ai-chat-header-text) !important;
	cursor:          pointer !important;
	padding:         0 !important;
	border-radius:   var(--ai-chat-radius) !important;
	display:         flex !important;
	align-items:     center !important;
	justify-content: center !important;
	transition:      background .2s, transform .15s ease !important;
	line-height:     1 !important;
	width:           28px !important;
	height:          28px !important;
}

.ai-chat-close-btn:hover,
.ai-chat-close-btn:focus-visible {
	background: var(--ai-chat-border) !important;
	transform:  translateY(-1px) !important;
	outline:    none !important;
}

/* ── Messages area ───────────────────────────────────────────────────────── */

.ai-chat-messages {
	flex:            1;
	overflow-y:      auto;
	padding:         16px 14px;
	display:         flex;
	flex-direction:  column;
	gap:             10px;
	scroll-behavior: smooth;
}

.ai-chat-messages::-webkit-scrollbar       { width: 4px; }
.ai-chat-messages::-webkit-scrollbar-track { background: transparent; }
.ai-chat-messages::-webkit-scrollbar-thumb {
	background:    var(--ai-chat-border);
	border-radius: var(--ai-chat-radius);
}

.ai-chat-message {
	display:        flex;
	flex-direction: column;
	max-width:      82%;
	animation:      ai-chat-msg-in .2s ease-out;
}

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

.ai-chat-message--user  { align-self: flex-end;  align-items: flex-end; }
.ai-chat-message--bot   { align-self: flex-start; align-items: flex-start; }
.ai-chat-message--has-articles { width: 100%; max-width: 100%; }
.ai-chat-message--has-articles .ai-chat-message-bubble { width: 100%; }

.ai-chat-message-bubble {
	padding:       10px 14px;
	border-radius: var(--ai-chat-radius);
	line-height:   1.55;
	word-break:    break-word;
	hyphens:       auto;
}

.ai-chat-message--user .ai-chat-message-bubble {
	background:                 var(--ai-chat-user-bg);
	color:                      var(--ai-chat-user-text);
}

.ai-chat-message--bot .ai-chat-message-bubble {
	background:                var(--ai-chat-bot-bg);
	color:                     var(--ai-chat-text);
	border:                    1px solid var(--ai-chat-border);
	box-shadow:                0 8px 20px color-mix(in srgb, var(--ai-chat-primary) 8%, transparent);
}

.ai-chat-message--welcome {
	max-width:   100%;
	align-self:  stretch;
}

.ai-chat-message--welcome .ai-chat-message-bubble {
	background:    var(--ai-chat-surface-alt);
	border-radius: var(--ai-chat-radius);
	border:        1px solid var(--ai-chat-border);
	border-inline-start: 3px solid var(--ai-chat-secondary);
	box-shadow: 1px 1px 10px color-mix(in srgb, var(--ai-chat-primary) 10%, transparent);
	padding:       16px 16px;
}

.ai-chat-message--hidden {
	display: none;
}

.ai-chat-articles {
	margin-top: 14px;
	padding-top: 12px;
	border-top: 1px solid var(--ai-chat-border);
}

.ai-chat-articles-heading {
	margin: 0 0 10px;
	color: var(--ai-chat-muted);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: .06em;
	text-transform: uppercase;
}

.ai-chat-articles-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 8px;
}

.ai-chat-article {
	padding: 11px 12px;
	background: var(--ai-chat-bg);
	border: 1px solid var(--ai-chat-border);
	border-radius: var(--ai-chat-radius);
}

.ai-chat-article-meta {
	margin-bottom: 4px;
	color: var(--ai-chat-muted);
	font-size: 11px;
	font-weight: 600;
}

.ai-chat-article-title {
	display: block;
	color: var(--ai-chat-text);
	font-size: 13px;
	font-weight: 700;
	line-height: 1.4;
	text-decoration: none;
}

a.ai-chat-article-title:hover,
a.ai-chat-article-title:focus-visible {
	color: var(--ai-chat-link);
	text-decoration: underline;
}

.ai-chat-article-excerpt {
	margin: 6px 0 0;
	color: var(--ai-chat-muted);
	font-size: 12px;
	line-height: 1.45;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
	overflow: hidden;
}

.ai-chat-attachment {
	display: block;
	margin-top: 12px;
}

.ai-chat-attachment--image {
	margin: 12px 0 0;
}

.ai-chat-inline-image-link {
	display: block;
	text-decoration: none;
}

.ai-chat-inline-image {
	display: block;
	width: 100%;
	max-width: 280px;
	height: auto;
	border-radius: var(--ai-chat-radius);
	border: 1px solid var(--ai-chat-border);
	box-shadow: 0 8px 20px color-mix(in srgb, var(--ai-chat-primary) 12%, transparent);
	background: var(--ai-chat-surface);
}

.ai-chat-attachment-caption {
	margin-top: 6px;
	font-size: 12px;
	line-height: 1.4;
	color: var(--ai-chat-muted);
}

.ai-chat-attachment--map {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.ai-chat-attachment-map {
	display: block;
	width: min(100%, 280px);
	height: 180px;
	border: 0;
	border-radius: var(--ai-chat-radius);
	box-shadow: 0 8px 20px color-mix(in srgb, var(--ai-chat-primary) 12%, transparent);
	background: var(--ai-chat-surface-alt);
}

.ai-chat-attachment-link {
	display: inline-flex;
	align-items: center;
	width: fit-content;
	color: var(--ai-chat-link);
	font-size: 13px;
	font-weight: 600;
	text-decoration: none;
}

.ai-chat-attachment-link:hover,
.ai-chat-attachment-link:focus-visible {
	text-decoration: underline;
	outline: none;
}

/* ── Typing indicator ────────────────────────────────────────────────────── */

.ai-chat-typing-bubble {
	display:     flex;
	align-items: center;
	gap:         5px;
	padding:     14px 16px !important;
}

.ai-chat-typing-dot {
	width:         7px;
	height:        7px;
	border-radius: var(--ai-chat-radius);
	background:    var(--ai-chat-primary);
	opacity:       .45;
	display:       inline-block;
	animation:     ai-chat-typing 1.2s infinite;
}

.ai-chat-typing-dot:nth-child(2) { animation-delay: .2s; }
.ai-chat-typing-dot:nth-child(3) { animation-delay: .4s; }

@keyframes ai-chat-typing {
	0%, 60%, 100% { opacity: .45; transform: translateY(0); }
	30%            { opacity: 1;   transform: translateY(-4px); }
}

/* ── Error message ───────────────────────────────────────────────────────── */

.ai-chat-error-msg {
	align-self:    center;
	background:    var(--ai-chat-error-bg);
	color:         var(--ai-chat-error);
	border-radius: var(--ai-chat-radius);
	padding:       8px 14px;
	font-size:     13px;
	max-width:     90%;
	text-align:    center;
	animation:     ai-chat-msg-in .2s ease-out;
}

/* ── Input area ──────────────────────────────────────────────────────────── */

.ai-chat-input-area {
	padding:      12px 14px;
	border-top:   1px solid var(--ai-chat-border);
	background:   var(--ai-chat-input-bg);
	flex-shrink:  0;
}

.ai-chat-ready-questions {
	display:       flex;
	flex-wrap:     wrap;
	gap:           8px;
	margin-bottom: 12px;
}

.ai-chat-ready-questions-wrap {
	width:       100%;
	align-self:  flex-start;
	margin-top:  12px;
}

.ai-chat-ready-questions-wrap--inside-welcome {
	margin-top: 12px;
}

.ai-chat-ready-questions-wrap .ai-chat-ready-questions {
	margin-bottom: 4px;
}

.ai-chat-ready-questions-title {
	display: none;
}

.ai-chat-ready-question {
	background:      var(--ai-chat-question-bg) !important;
	color:           var(--ai-chat-question-text) !important;
	border:          1px solid var(--ai-chat-border) !important;
	border-radius:   var(--ai-chat-radius) !important;
	padding:         7px 14px !important;
	font-size:       13px !important;
	font-weight:     600 !important;
	line-height:     1.35 !important;
	cursor:          pointer !important;
	transition:      transform .15s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, opacity .2s ease !important;
	box-shadow:      none !important;
}

.ai-chat-ready-question:hover:not(:disabled),
.ai-chat-ready-question:focus-visible {
	background:    var(--ai-chat-primary) !important;
	color:         var(--ai-chat-on-primary) !important;
	border-color:  var(--ai-chat-primary) !important;
	transform:     translateY(-1px) !important;
	outline:       none !important;
	box-shadow:    none !important;
}

.ai-chat-ready-question:disabled {
	opacity: .55 !important;
	cursor:  wait !important;
}

.ai-chat-ready-questions-wrap--hidden {
	display: none;
}

@media (min-width: 1025px) {
	.ai-chat-panel {
		height: var(--ai-chat-panel-h);
	}
}

.ai-chat-input-row {
	display:       flex;
	align-items:   center;
	gap:           8px;
	background:    var(--ai-chat-surface);
	border:        1px solid var(--ai-chat-border);
	border-radius: var(--ai-chat-radius);
	padding:       4px 4px 4px 14px;
	transition:    border-color .2s;
}

.ai-chat-input-row:focus-within {
	border-color: var(--ai-chat-primary);
}

.ai-chat-input {
	flex:        1;
	background:  transparent;
	border:      none;
	outline:     none;
	resize:      none;
	height:      32px;
	font-size:   14px;
	color:       var(--ai-chat-text);
	font-family: inherit;
	line-height: 1.5;
	max-height:  120px;
	min-height:  24px;
	padding:     4px 0;
	overflow-y:  auto;
}

.ai-chat-input::placeholder {
	color: var(--ai-chat-muted);
}

.ai-chat-send-btn {
	background:      var(--ai-chat-secondary) !important;
	color:           var(--ai-chat-on-secondary) !important;
	border:          none !important;
	border-radius:   var(--ai-chat-radius) !important;
	width:           38px !important;
	height:          38px !important;
	min-width:       38px !important;
	display:         flex !important;
	align-items:     center !important;
	justify-content: center !important;
	cursor:          pointer !important;
	flex-shrink:     0 !important;
	transition:      background .2s, transform .1s, opacity .2s !important;
	padding:         0 !important;
}

.ai-chat-send-btn:hover {
	background-color: var(--ai-chat-primary) !important;
	color: var(--ai-chat-on-primary) !important;
}

.ai-chat-send-btn:active:not(:disabled) {
	transform: scale(.92);
}

.ai-chat-send-btn:disabled {
	background: var(--ai-chat-border) !important;
	color:      var(--ai-chat-muted) !important;
	opacity:    1;
	cursor:     not-allowed;
}
.ai-chat-send-btn:hover:disabled {
	background: var(--ai-chat-border) !important;
	color:      var(--ai-chat-muted) !important;
}

.ai-chat-send-btn:focus-visible {
	outline:        2px solid var(--ai-chat-primary);
	outline-offset: 2px;
}

.ai-chat-disclaimer {
	font-size:   11px;
	color:       var(--ai-chat-muted);
	margin:      8px 2px 0;
	text-align:  center;
	line-height: 1.4;
}

/* ── Shortcode trigger button ────────────────────────────────────────────── */

.ai-chat-shortcode-trigger {
	display:       inline-flex;
	align-items:   center;
	gap:           8px;
	background:    var(--ai-chat-primary);
	color:         var(--ai-chat-on-primary);
	border:        none;
	border-radius: var(--ai-chat-radius);
	padding:       10px 20px;
	font-size:     15px;
	font-family:   inherit;
	cursor:        pointer;
	transition:    background .2s, transform .1s;
}

.ai-chat-shortcode-trigger:hover {
	background: var(--ai-chat-secondary);
	color: var(--ai-chat-on-secondary);
}

/* ── Mobile responsive ───────────────────────────────────────────────────── */

@media (max-width: 480px) {
	.ai-chat-panel {
		position:      fixed;
		inset:         0;
		width:         100%;
		max-height:    100%;
		border-radius: 0;
	}

	.ai-chat-bubble {
		bottom: 20px;
		right:  var(--ai-chat-bubble-right);
		left:   var(--ai-chat-bubble-left);
	}
}

/* ── RTL support ─────────────────────────────────────────────────────────── */

[dir="rtl"] .ai-chat-bubble {
	right: var(--ai-chat-bubble-left);
	left:  var(--ai-chat-bubble-right);
}

[dir="rtl"] .ai-chat-panel {
	right: var(--ai-chat-bubble-left);
	left:  var(--ai-chat-bubble-right);
}

[dir="rtl"] .ai-chat-message--user { align-items: flex-start; }
[dir="rtl"] .ai-chat-message--bot  { align-items: flex-end; }

[dir="rtl"] .ai-chat-message--user .ai-chat-message-bubble {
	border-radius: var(--ai-chat-radius);
}

[dir="rtl"] .ai-chat-message--bot .ai-chat-message-bubble {
	border-radius: var(--ai-chat-radius);
}

/* ── Noscript fallback ───────────────────────────────────────────────────── */

.ai-chat-noscript {
	display:    block;
	padding:    12px;
	background: var(--ai-chat-surface-alt);
	color:      var(--ai-chat-text);
	border:     1px solid var(--ai-chat-border);
	border-radius: var(--ai-chat-radius);
	font-size:  14px;
	margin:     8px;
}