*,
*::before,
*::after {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

:root {
	/* Warm dark palette — subtle indigo undertone */
	--bg: #08080d;
	--surface: #111117;
	--surface-hover: #17171e;
	--surface-active: #1c1c25;
	--border: #1e1e2a;
	--border-active: #2c2c3e;
	--text: #eaeaef;
	--text-secondary: #9e9eb5;
	--text-dim: #5a5a6e;
	--accent: #6366f1;
	--accent-hover: #818cf8;
	--accent-glow: rgba(99, 102, 241, 0.2);
	--accent-glow-md: rgba(99, 102, 241, 0.35);
	--accent-glow-lg: rgba(99, 102, 241, 0.08);
	--danger: #f43f5e;
	--success: #34d399;
	--radius: 14px;
	--radius-sm: 8px;
	--safe-top: env(safe-area-inset-top, 0px);
	--safe-bottom: env(safe-area-inset-bottom, 0px);
}

html,
body {
	height: 100%;
	font-family:
		"SF Pro Display", -apple-system, BlinkMacSystemFont, "PingFang SC",
		"Hiragino Sans GB", "Microsoft YaHei", sans-serif;
	background: var(--bg);
	color: var(--text);
	-webkit-font-smoothing: antialiased;
	-webkit-tap-highlight-color: transparent;
	-webkit-touch-callout: none;
	user-select: none;
	overflow: hidden;
}

/* Subtle ambient glow at top */
body::after {
	content: "";
	position: fixed;
	top: -30%;
	left: 50%;
	transform: translateX(-50%);
	width: 600px;
	height: 600px;
	background: radial-gradient(
		circle,
		rgba(99, 102, 241, 0.04) 0%,
		transparent 70%
	);
	pointer-events: none;
	z-index: 0;
}

#app {
	position: relative;
	z-index: 1;
	display: flex;
	flex-direction: column;
	height: 100%;
	max-width: 480px;
	margin: 0 auto;
	padding: calc(16px + var(--safe-top)) 20px calc(16px + var(--safe-bottom));
}

/* ─── Header ─── */
header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 8px 0 20px;
	flex-shrink: 0;
}

header h1 {
	font-size: 22px;
	font-weight: 700;
	letter-spacing: -0.03em;
}

.status {
	display: flex;
	align-items: center;
	gap: 7px;
	font-size: 12px;
	font-weight: 500;
	color: var(--text-dim);
	padding: 5px 12px;
	border-radius: 20px;
	background: var(--surface);
	border: 1px solid var(--border);
	transition: all 0.25s ease;
}

.status .dot {
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: var(--text-dim);
	transition: all 0.3s ease;
	flex-shrink: 0;
}

.status.connected {
	border-color: rgba(52, 211, 153, 0.15);
}

.status.connected .dot {
	background: var(--success);
	box-shadow: 0 0 6px rgba(52, 211, 153, 0.5);
}

.status.disconnected .dot {
	background: var(--danger);
	box-shadow: 0 0 6px rgba(244, 63, 94, 0.4);
}

.status.connecting .dot {
	background: var(--accent);
	animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
	0%,
	100% {
		opacity: 1;
	}
	50% {
		opacity: 0.3;
	}
}

/* ─── Preview ─── */
#preview-section {
	flex-shrink: 0;
	padding-bottom: 12px;
}

.preview-box {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 16px 18px;
	min-height: 80px;
	max-height: 160px;
	overflow-y: auto;
	transition:
		border-color 0.3s ease,
		box-shadow 0.3s ease,
		background 0.3s ease;
}

.preview-box.active {
	border-color: rgba(99, 102, 241, 0.4);
	box-shadow:
		0 0 0 1px var(--accent-glow),
		0 4px 24px -4px rgba(99, 102, 241, 0.15);
	background: linear-gradient(
		180deg,
		rgba(99, 102, 241, 0.03) 0%,
		var(--surface) 100%
	);
}

#preview-text {
	font-size: 16px;
	line-height: 1.6;
	word-break: break-word;
}

#preview-text.placeholder {
	color: var(--text-dim);
}

/* ─── Mic Button ─── */
#mic-section {
	display: flex;
	flex-direction: column;
	align-items: center;
	padding: 20px 0 16px;
	flex-shrink: 0;
	gap: 14px;
}

.mic-wrapper {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	touch-action: none;
}

#mic-btn {
	position: relative;
	z-index: 1;
	width: 96px;
	height: 96px;
	border-radius: 50%;
	border: 2px solid var(--border);
	background: linear-gradient(145deg, var(--surface-hover), var(--surface));
	color: var(--text-secondary);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
	-webkit-user-select: none;
	touch-action: none;
	box-shadow:
		0 2px 12px rgba(0, 0, 0, 0.3),
		inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

#mic-btn svg {
	transition: transform 0.2s ease;
}

#mic-btn:disabled {
	opacity: 0.3;
	cursor: not-allowed;
}

#mic-btn:not(:disabled):active,
#mic-btn.recording {
	background: var(--accent);
	border-color: var(--accent-hover);
	color: #fff;
	transform: scale(1.06);
	box-shadow:
		0 0 32px var(--accent-glow-md),
		0 0 80px var(--accent-glow);
}

#mic-btn.recording {
	animation: mic-breathe 1.8s ease-in-out infinite;
}

@keyframes mic-breathe {
	0%,
	100% {
		box-shadow:
			0 0 32px var(--accent-glow-md),
			0 0 80px var(--accent-glow);
	}
	50% {
		box-shadow:
			0 0 48px var(--accent-glow-md),
			0 0 120px var(--accent-glow),
			0 0 200px var(--accent-glow-lg);
	}
}

/* Wave rings — radiate outward when recording */
.mic-rings {
	position: absolute;
	inset: 0;
	pointer-events: none;
}

.mic-rings .ring {
	position: absolute;
	inset: 0;
	border-radius: 50%;
	border: 1.5px solid var(--accent);
	opacity: 0;
}

#mic-btn.recording + .mic-rings .ring {
	animation: ring-expand 2.4s cubic-bezier(0.2, 0, 0.2, 1) infinite;
}

#mic-btn.recording + .mic-rings .ring:nth-child(2) {
	animation-delay: 0.8s;
}

#mic-btn.recording + .mic-rings .ring:nth-child(3) {
	animation-delay: 1.6s;
}

@keyframes ring-expand {
	0% {
		transform: scale(1);
		opacity: 0.35;
	}
	100% {
		transform: scale(2);
		opacity: 0;
	}
}

.mic-hint {
	font-size: 13px;
	color: var(--text-dim);
	letter-spacing: 0.01em;
	transition: color 0.3s ease;
}

/* ─── History ─── */
#history-section {
	flex: 1;
	min-height: 0;
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.history-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding-bottom: 10px;
	flex-shrink: 0;
}

.history-header h2 {
	font-size: 13px;
	font-weight: 600;
	color: var(--text-dim);
	text-transform: uppercase;
	letter-spacing: 0.06em;
}

.text-btn {
	background: none;
	border: none;
	color: var(--text-dim);
	font-size: 12px;
	font-weight: 500;
	cursor: pointer;
	padding: 4px 10px;
	border-radius: var(--radius-sm);
	transition: all 0.15s ease;
}

.text-btn:active {
	color: var(--danger);
	background: rgba(244, 63, 94, 0.08);
}

#history-list {
	list-style: none;
	flex: 1;
	overflow-y: auto;
	-webkit-overflow-scrolling: touch;
}

#history-list li {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 14px 16px;
	margin-bottom: 8px;
	font-size: 14px;
	line-height: 1.5;
	cursor: pointer;
	transition: all 0.15s ease;
	display: flex;
	align-items: flex-start;
	gap: 12px;
	animation: slide-up 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
	animation-delay: calc(var(--i, 0) * 40ms);
}

#history-list li:active {
	background: var(--surface-active);
	border-color: var(--border-active);
	transform: scale(0.985);
}

#history-list li .hist-text {
	flex: 1;
	word-break: break-word;
}

#history-list li .hist-time {
	font-size: 11px;
	color: var(--text-dim);
	white-space: nowrap;
	flex-shrink: 0;
	padding-top: 2px;
	font-variant-numeric: tabular-nums;
}

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

#history-empty {
	text-align: center;
	padding: 40px 0;
}

.placeholder {
	color: var(--text-dim);
	font-size: 14px;
}

/* ─── Scrollbar ─── */
.preview-box::-webkit-scrollbar,
#history-list::-webkit-scrollbar {
	width: 3px;
}

.preview-box::-webkit-scrollbar-track,
#history-list::-webkit-scrollbar-track {
	background: transparent;
}

.preview-box::-webkit-scrollbar-thumb,
#history-list::-webkit-scrollbar-thumb {
	background: var(--border);
	border-radius: 3px;
}

/* ─── Toast ─── */
.toast {
	position: fixed;
	bottom: calc(80px + var(--safe-bottom, 0px));
	left: 50%;
	transform: translateX(-50%) translateY(8px);
	background: rgba(28, 28, 37, 0.85);
	color: var(--text);
	padding: 10px 22px;
	border-radius: 24px;
	font-size: 13px;
	font-weight: 500;
	z-index: 999;
	opacity: 0;
	transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
	pointer-events: none;
	border: 1px solid var(--border);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.toast.show {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
}