/**
 * AI Agent Chat — AusPost-style help widget (layout inspired by auspost.com.au/help-and-support).
 * Embedded PNG icons are loaded via data URIs from PHP (assets/b64/*.b64).
 */

:root .ai-agent-chat {
	--ai-brand: #d4112d;
	--ai-panel: #ffffff;
	--ai-canvas: #f5f5f7;
	--ai-launcher: #2c2e35;
	--ai-text: #1a1d21;
	--ai-text-soft: #5c6370;
	--ai-border: #dfe3e8;
	--chat-window-width: 342px;
	--ai-radius-panel: 12px;
	--ai-radius-pill: 9999px;
	--ai-shadow-panel: 0 12px 48px rgba(15, 23, 42, 0.18), 0 2px 12px rgba(15, 23, 42, 0.08);
	--ai-shadow-launcher: 0 8px 28px rgba(0, 0, 0, 0.22);
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 15px;
	line-height: 1.45;
	color: var(--ai-text);
	-webkit-font-smoothing: antialiased;
	position: relative;
	z-index: 99990;
	pointer-events: none;
}

:root .ai-agent-chat .ai-agent-chat__launcher,
:root .ai-agent-chat .ai-agent-chat__panel {
	pointer-events: auto;
}

:root .ai-agent-chat,
:root .ai-agent-chat *,
:root .ai-agent-chat *::before,
:root .ai-agent-chat *::after {
	box-sizing: border-box;
}

:root .ai-agent-chat button,
:root .ai-agent-chat textarea {
	font-family: inherit;
	line-height: inherit;
	appearance: none;
	-webkit-appearance: none;
}

:root .ai-agent-chat button {
	width: auto;
	max-width: none;
	margin: 0;
}

/* --- Launcher pill (matches app-btn primary-btn + chat-btn-label pattern) --- */
.ai-agent-chat .app-btn.primary-btn.ai-agent-chat__launcher,
.ai-agent-chat__launcher.app-btn.primary-btn {
	position: fixed;
	z-index: 99998;
	right: max(16px, env(safe-area-inset-right));
	bottom: max(16px, env(safe-area-inset-bottom));
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	min-height: 48px;
	padding: 0 20px 0 14px;
	border: none;
	border-radius: var(--ai-radius-pill);
	cursor: pointer;
	background: var(--ai-launcher);
	color: #fff;
	font: inherit;
	font-weight: 700;
	font-size: 15px;
	letter-spacing: 0.02em;
	box-shadow: var(--ai-shadow-launcher);
	transition: transform 0.18s ease, filter 0.15s ease;
}

.ai-agent-chat__launcher .chat-icon-container {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	line-height: 0;
}

.ai-agent-chat__launcher .chat-app-icon {
	width: 24px;
	height: 24px;
	object-fit: contain;
}

.ai-agent-chat__launcher .chat-btn-label {
	white-space: nowrap;
}

.ai-agent-chat__launcher.app-btn.primary-btn:hover {
	transform: translateY(-1px);
	filter: brightness(1.05);
}

.ai-agent-chat__launcher.app-btn.primary-btn:focus-visible {
	outline: 3px solid color-mix(in srgb, var(--ai-brand) 55%, #fff);
	outline-offset: 3px;
}

.ai-agent-chat__launcher .ai-agent-chat__launcher-icon {
	width: 24px;
	height: 24px;
	display: block;
}

/* --- Chat window (reference: chat-window-wrapper ~342px) --- */
.ai-agent-chat__panel.chat-window-wrapper {
	position: fixed;
	z-index: 99999;
	right: max(16px, env(safe-area-inset-right));
	bottom: max(84px, calc(env(safe-area-inset-bottom) + 68px));
	width: min(var(--chat-window-width, 342px), calc(100vw - 24px));
	max-width: min(var(--chat-window-width, 342px), calc(100vw - 24px));
	max-height: min(560px, calc(100vh - 112px));
	min-height: 0;
	display: flex;
	flex-direction: column;
	background: transparent;
	color: var(--ai-text);
	border-radius: var(--ai-radius-panel);
	box-shadow: none;
	opacity: 0;
	transform: translateY(14px);
	pointer-events: none;
	transition: opacity 0.22s ease, transform 0.22s ease;
	isolation: isolate;
}

.ai-agent-chat__panel.is-open {
	opacity: 1;
	transform: translateY(0);
	pointer-events: auto;
}

.chat-window-container {
	display: flex;
	flex-direction: column;
	min-height: 0;
	flex: 1;
	background: var(--ai-panel);
	border-radius: var(--ai-radius-panel);
	box-shadow: var(--ai-shadow-panel);
	overflow: hidden;
	border: 1px solid var(--ai-border);
}

/* --- Header (logo left, controls right) --- */
.ai-agent-chat__head.chat-header-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	flex-shrink: 0;
	padding: 12px 10px 12px 14px;
	/*background: var(--ai-panel);*/
	background: #ffffff;
	border-bottom: 1px solid var(--ai-border);
}

.ai-agent-chat-brand-row.chat-header-content-container {
	display: flex;
	align-items: center;
	gap: 12px;
	flex: 1;
	min-width: 0;
}

.ai-agent-chat-header__logo.app-logo {
	flex-shrink: 0;
	line-height: 0;
}

.chat-avatar-img {
	display: block;
	max-height: 30px;
	width: auto;
	height: auto;
	object-fit: contain;
}

.ai-agent-chat-controls.chat-header-btns-container {
	display: flex;
	align-items: center;
	gap: 2px;
	flex-shrink: 0;
}

.ai-agent-chat .app-btn.secondary-btn.icon.stealth {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	padding: 0;
	border: none;
	border-radius: 7px;
	background: transparent;
	color: var(--ai-text-soft);
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease;
}

.ai-agent-chat .app-btn.secondary-btn.icon.stealth:hover {
	background: #f3f4f6;
	color: var(--ai-text);
}

.chat-icon-container {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	line-height: 0;
}

.ai-agent-chat .chat-app-icon {
	width: 15px;
	height: 15px;
	display: block;
	object-fit: contain;
}

/* --- Main message column --- */
.ai-agent-chat-main.messages-container {
	flex: 1 1 auto;
	min-height: 0;
	display: flex;
	flex-direction: column;
	overflow: hidden;
	background: var(--ai-canvas);
}

.message-area-container {
	flex: 1 1 auto;
	min-height: 0;
	display: flex;
	flex-direction: column;
}

.message-area.ai-agent-chat__scroll-inner {
	flex: 1 1 auto;
	min-height: 0;
	max-height: min(340px, 42vh);
	overflow-x: hidden;
	overflow-y: auto;
	padding: 14px 16px 10px;
	scrollbar-width: thin;
}

.ai-agent-chat__messages {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

/* Bubble layout (AusPost-style assistant blocks) */
.ai-agent-chat__msg .single-message-text .content-wrapper {
	max-width: 100%;
}

.ai-agent-chat__msg .message-content {
	margin: 0;
	font-size: 14px;
	line-height: 1.55;
	color: var(--ai-text);
}

.ai-agent-chat__msg--assistant .message-content {
	background: #ececee;
	padding: 12px 14px;
	border-radius: 10px;
	border: 1px solid rgba(0, 0, 0, 0.06);
}

.ai-agent-chat__msg--assistant .message-content a {
	color: var(--ai-brand);
	text-decoration: underline;
	text-underline-offset: 2px;
}

.ai-agent-chat__msg--user .message-content {
	background: #fff;
	padding: 12px 14px;
	border-radius: 10px;
	border: 1px solid var(--ai-border);
	align-self: flex-end;
	text-align: left;
	box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.ai-agent-chat__msg--user .inner-message-wrapper {
	display: flex;
	justify-content: flex-end;
}

.ai-agent-chat__msg--user.fuchsia-chat-app {
	align-self: flex-end;
	max-width: 92%;
}

.ai-agent-chat__msg--assistant.fuchsia-chat-app {
	align-self: flex-start;
	max-width: 95%;
}

.ai-agent-chat__typing {
	font-size: 13px;
	color: var(--ai-text-soft);
	padding: 4px 6px;
	animation: ai-agent-pulse 1.2s ease-in-out infinite;
}

@keyframes ai-agent-pulse {
	50% {
		opacity: 0.55;
	}
}

/* Quick replies */
.quick-reply-container.ai-agent-chat__quick {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	padding: 4px 0 12px;
	margin-top: 4px;
}

.chat-btn.quick-reply-btn.ai-agent-chat__quick-btn {
	border: 1px solid var(--ai-border);
	background: #fff;
	color: var(--ai-text);
	font: inherit;
	font-size: 13px;
	font-weight: 600;
	padding: 8px 14px;
	border-radius: var(--ai-radius-pill);
	cursor: pointer;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.chat-btn.quick-reply-btn:hover {
	border-color: color-mix(in srgb, var(--ai-brand) 40%, var(--ai-border));
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* --- Composer (chat-actions) --- */
.ai-agent-chat-composer-wrap.chat-actions-container {
	flex-shrink: 0;
	/*background: var(--ai-panel);*/
	background: #ffffff;
	border-top: 1px solid var(--ai-border);
	height: 65px;
	padding: 7px 12px;
	box-sizing: border-box;
}

.user-input-wrapper {
	width: 100%;
}

.user-input-container {
	display: flex;
	align-items: flex-start;
	gap: 6px;
	width: 100%;
}

.user-input-textarea {
	flex: 1;
	min-width: 0;
	/*border: 1px solid var(--ai-border);*/
	/*border-radius: 10px;*/
	background: #fafafa;
	/*adding: 4px 8px 4px 12px;*/
	/*transition: border-color 0.15s ease, box-shadow 0.15s ease;*/
	margin-top: 4px;
}

.user-input-textarea:focus-within {
	border-color: color-mix(in srgb, var(--ai-brand) 45%, var(--ai-border));
	box-shadow: 0 0 0 3px color-mix(in srgb, var(--ai-brand) 15%, transparent);
	background: #fff;
}

.ai-agent-chat__input {
	width: 100%;
	min-height: 45px !important;
	max-height: 120px;
	resize: none;
	border: none;
	background: transparent;
	font-size: 15px;
	line-height: 1.4;
	outline: none;
	color: var(--ai-text);
}

.ai-agent-chat__input::placeholder {
	color: #9ca3af;
}

.user-input-actions {
	flex-shrink: 0;
	align-self: flex-end;
	padding-bottom: 2px;
}

.ai-agent-chat .app-btn.primary-btn.icon.ai-agent-chat__send {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 52px;
	height: 52px;
	min-width: 52px;
	padding: 0;
	border: none;
	border-radius: 12px;
	background: #f3f4f6;
	cursor: pointer;
	color: var(--ai-text-soft);
	transition: color 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.ai-agent-chat .ai-agent-chat__send:hover:not(:disabled) {
	color: var(--ai-brand);
	background: #f9fafb;
}

.ai-agent-chat .ai-agent-chat__send .chat-app-icon {
	width: 24px;
	height: 24px;
}

.ai-agent-chat .ai-agent-chat__send svg {
	width: 24px;
	height: 24px;
	display: block;
}

.ai-agent-chat .ai-agent-chat__send:disabled {
	opacity: 0.38;
	cursor: not-allowed;
}

.ai-agent-chat__panel.is-minimized .ai-agent-chat-main,
.ai-agent-chat__panel.is-minimized .ai-agent-chat-composer-wrap {
	display: none;
}

@media (max-width: 640px) {
	.ai-agent-chat__panel.chat-window-wrapper {
		right: 0;
		bottom: 0;
		left: 0;
		width: 100%;
		max-width: none;
		max-height: min(88vh, 88dvh);
		border-radius: var(--ai-radius-panel) var(--ai-radius-panel) 0 0;
	}

	.ai-agent-chat__launcher {
		/*bottom: max(12px, env(safe-area-inset-bottom));
        right: max(12px, env(safe-area-inset-right));
		*/
		display: none !important;
	}

	.message-area.ai-agent-chat__scroll-inner {
		max-height: min(48vh, 48dvh);
	}
}

@media (prefers-reduced-motion: reduce) {
	.ai-agent-chat__panel,
	.ai-agent-chat__launcher {
		transition: none;
	}

	.ai-agent-chat__typing {
		animation: none;
	}
}