/* --- Global Variables: Light Theme (default) --- */
:root {
	--bg-main: #f1f5f9;
	--bg-card: #ffffff;
	--bg-input: #f8fafc;
	--bg-code: #f1f5f9;
	--border-color: #cbd5e1;
	--text-primary: #0f172a;
	--text-secondary: #475569;
	--text-code: #1e293b;
	--accent: #0284c7;
	--accent-hover: #0369a1;
	--danger: #e11d48;
	--success: #16a34a;
	--shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
	--toast-bg: #ffffff;
	--scrollbar-thumb: #94a3b8;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
	--bg-main: #0f172a;
	--bg-card: #1e293b;
	--bg-input: #334155;
	--bg-code: #020617;
	--border-color: #475569;
	--text-primary: #f8fafc;
	--text-secondary: #94a3b8;
	--text-code: #e2e8f0;
	--accent: #38bdf8;
	--accent-hover: #0ea5e9;
	--danger: #f43f5e;
	--success: #10b981;
	--shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
	--toast-bg: #1e293b;
	--scrollbar-thumb: #475569;
}

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

body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	background-color: var(--bg-main);
	color: var(--text-primary);
	min-height: 100vh;
	display: flex;
	justify-content: center;
	padding: 40px 20px;
	line-height: 1.6;
	transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
	width: 100%;
	max-width: 650px;
	background: var(--bg-card);
	border: 1px solid var(--border-color);
	border-radius: 16px;
	padding: 32px;
	box-shadow: var(--shadow);
	transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

h1 {
	text-align: center;
	font-size: 1.5rem;
	font-weight: 600;
	margin-bottom: 20px;
	color: var(--text-primary);
	letter-spacing: -0.5px;
}

/* --- Settings Bar (Theme + Language) --- */
.settings-bar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 20px;
	padding-bottom: 16px;
	border-bottom: 1px solid var(--border-color);
}

.settings-group {
	display: flex;
	align-items: center;
	gap: 8px;
}

.settings-label {
	font-size: 0.8rem;
	color: var(--text-secondary);
	font-weight: 500;
}

.toggle-btn {
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	color: var(--text-primary);
	padding: 4px 10px;
	border-radius: 6px;
	font-size: 0.8rem;
	cursor: pointer;
	transition: all 0.2s;
	font-weight: 500;
}

.toggle-btn:hover {
	border-color: var(--accent);
	color: var(--accent);
}

.toggle-btn.active {
	background: var(--accent);
	color: white;
	border-color: var(--accent);
}

/* --- Form Components --- */
.form-group { margin-bottom: 20px; }

label {
	display: block;
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--text-secondary);
	margin-bottom: 8px;
}

input[type="text"], input[type="number"], select {
	width: 100%;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	border-radius: 8px;
	padding: 10px 14px;
	color: var(--text-primary);
	font-size: 0.95rem;
	outline: none;
	transition: border-color 0.2s, background-color 0.3s;
}

input:focus, select:focus {
	border-color: var(--accent);
}

/* Custom Radio Group */
.radio-group {
	display: flex;
	gap: 15px;
	background: var(--bg-input);
	padding: 4px;
	border-radius: 8px;
	border: 1px solid var(--border-color);
	transition: background-color 0.3s, border-color 0.3s;
}

.radio-item {
	flex: 1;
	text-align: center;
	cursor: pointer;
}

.radio-item input { display: none; }

.radio-item span {
	display: block;
	padding: 8px;
	border-radius: 6px;
	font-size: 0.9rem;
	color: var(--text-secondary);
	transition: all 0.2s;
}

.radio-item input:checked + span {
	background: var(--accent);
	color: white;
	font-weight: 600;
}

/* Dynamic Parameter Input Area */
.dynamic-params {
	display: none;
	gap: 10px;
	margin-top: 10px;
}
.dynamic-params.active { display: flex; }
.dynamic-params input { flex: 1; }

/* --- Buttons --- */
.btn-row { display: flex; gap: 12px; margin-top: 24px; }

button {
	flex: 1;
	padding: 12px;
	border: none;
	border-radius: 8px;
	font-size: 0.95rem;
	font-weight: 600;
	cursor: pointer;
	transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary { background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--border-color); }

.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: white; }

/* --- Result Display Area --- */
.result-box {
	margin-top: 30px;
	background: var(--bg-code);
	border: 1px solid var(--border-color);
	border-radius: 8px;
	padding: 16px;
	min-height: 180px;
	max-height: 400px;
	overflow-y: auto;
	font-family: "JetBrains Mono", "Fira Code", monospace;
	font-size: 0.85rem;
	line-height: 1.6;
	white-space: pre-wrap;
	color: var(--text-code);
	transition: background-color 0.3s, border-color 0.3s;
}

.result-box::-webkit-scrollbar { width: 6px; }
.result-box::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* Toast Notification */
.toast {
	position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px);
	background: var(--toast-bg); border: 1px solid var(--border-color); color: var(--text-primary);
	padding: 10px 20px; border-radius: 8px; opacity: 0; transition: all 0.3s; pointer-events: none; z-index: 100;
	box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Shortcut Hint */
.shortcut-hint {
	font-size: 0.75rem;
	color: var(--text-secondary);
	margin-top: 4px;
	opacity: 0.7;
}

@media (max-width: 480px) {
	.container { padding: 20px; }
	.btn-row { flex-direction: column; }
	.settings-bar { flex-direction: column; gap: 10px; align-items: flex-start; }
}