/* Root variables for light/dark */
:root {
	--avg-bg: #ffffff;
	--avg-text: #333333;
	--avg-card-bg: #f8f9fa;
	--avg-border: #e2e8f0;
	--avg-primary: #6c5ce7;
	--avg-primary-hover: #5a4bd1;
	--avg-secondary: #a0aec0;
	--avg-error: #e53e3e;
	--avg-success: #38a169;
	--avg-shadow: 0 4px 15px rgba(0,0,0,0.08);
	--avg-input-bg: #ffffff;
	--avg-button-text: #ffffff;
	--avg-spinner: #6c5ce7;
	--avg-modal-bg: #ffffff;
}

/* Dark mode */
.avg-calc-wrapper.dark-mode {
	--avg-bg: #1a202c;
	--avg-text: #e2e8f0;
	--avg-card-bg: #2d3748;
	--avg-border: #4a5568;
	--avg-primary: #9f7aea;
	--avg-primary-hover: #805ad5;
	--avg-secondary: #718096;
	--avg-input-bg: #2d3748;
	--avg-button-text: #1a202c;
	--avg-shadow: 0 4px 15px rgba(0,0,0,0.4);
	--avg-spinner: #9f7aea;
}

/* Wrapper styling */
.avg-calc-wrapper {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
	max-width: 700px;
	margin: 30px auto;
	padding: 30px;
	background: var(--avg-bg);
	color: var(--avg-text);
	border-radius: 16px;
	box-shadow: var(--avg-shadow);
	transition: background 0.3s, color 0.3s;
	position: relative;
}

/* Dark/light toggle */
.avg-calc-dark-toggle {
	position: absolute;
	top: 20px;
	right: 20px;
	background: none;
	border: none;
	font-size: 1.4rem;
	cursor: pointer;
	color: var(--avg-text);
	opacity: 0.7;
	transition: opacity 0.2s;
	padding: 5px;
}
.avg-calc-dark-toggle:hover {
	opacity: 1;
}

/* Label */
.avg-calc-label {
	display: block;
	font-weight: 600;
	margin-bottom: 10px;
	font-size: 1rem;
}

/* Textarea */
.avg-calc-textarea {
	width: 100%;
	padding: 14px 18px;
	border: 2px solid var(--avg-border);
	border-radius: 10px;
	background: var(--avg-input-bg);
	color: var(--avg-text);
	font-size: 1rem;
	resize: vertical;
	transition: border-color 0.3s, box-shadow 0.3s;
	box-sizing: border-box;
	font-family: inherit;
}
.avg-calc-textarea:focus {
	outline: none;
	border-color: var(--avg-primary);
	box-shadow: 0 0 0 3px rgba(108,92,231,0.2);
}

/* Error message */
.avg-calc-error {
	color: var(--avg-error);
	min-height: 20px;
	margin: 6px 0 0;
	font-size: 0.9rem;
	font-weight: 500;
}

/* Buttons container */
.avg-calc-buttons {
	display: flex;
	gap: 15px;
	margin-top: 20px;
	flex-wrap: wrap;
}

/* Base button */
.avg-calc-btn {
	flex: 1;
	padding: 14px 24px;
	border: none;
	border-radius: 10px;
	font-size: 1rem;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.2s, box-shadow 0.2s, background 0.3s;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
}
.avg-calc-btn:active {
	transform: translateY(1px);
}

/* Primary button */
.avg-calc-primary {
	background: linear-gradient(135deg, var(--avg-primary), #a29bfe);
	color: var(--avg-button-text);
	box-shadow: 0 4px 12px rgba(108,92,231,0.3);
}
.avg-calc-primary:hover {
	background: linear-gradient(135deg, var(--avg-primary-hover), #8c7ae6);
	box-shadow: 0 6px 16px rgba(108,92,231,0.4);
}

/* Secondary button */
.avg-calc-secondary {
	background: var(--avg-secondary);
	color: #ffffff;
	box-shadow: 0 4px 12px rgba(160,174,192,0.3);
}
.avg-calc-secondary:hover {
	background: #8e9bae;
	box-shadow: 0 6px 16px rgba(160,174,192,0.4);
}

/* Loading spinner */
.avg-calc-loading {
	display: flex;
	align-items: center;
	gap: 12px;
	margin: 20px 0;
	font-style: italic;
	color: var(--avg-text);
	opacity: 0.8;
}
.avg-calc-spinner {
	border: 3px solid rgba(108,92,231,0.2);
	border-top: 3px solid var(--avg-spinner);
	border-radius: 50%;
	width: 24px;
	height: 24px;
	animation: avg-spin 0.8s linear infinite;
}
@keyframes avg-spin {
	to { transform: rotate(360deg); }
}

/* Result card */
.avg-calc-result {
	margin-top: 25px;
	background: var(--avg-card-bg);
	border-radius: 12px;
	padding: 20px 25px;
	border: 1px solid var(--avg-border);
	animation: avg-fadeIn 0.4s ease;
}
@keyframes avg-fadeIn {
	from { opacity: 0; transform: translateY(10px); }
	to { opacity: 1; transform: translateY(0); }
}

.avg-calc-result-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 20px;
}
.avg-calc-result-header h3 {
	margin: 0;
	font-size: 1.4rem;
}
.avg-calc-result-actions {
	display: flex;
	gap: 8px;
}
.avg-calc-action-btn {
	background: none;
	border: 1px solid var(--avg-border);
	border-radius: 8px;
	padding: 8px 12px;
	cursor: pointer;
	font-size: 1rem;
	color: var(--avg-text);
	transition: background 0.2s, transform 0.2s;
}
.avg-calc-action-btn:hover {
	background: var(--avg-primary);
	color: #ffffff;
	border-color: transparent;
	transform: translateY(-2px);
}

.avg-calc-result-body {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 15px;
}
.avg-calc-stat {
	font-size: 1rem;
	padding: 8px 0;
	border-bottom: 1px dashed var(--avg-border);
}
.avg-calc-average {
	grid-column: span 2;
	font-size: 1.15rem;
	color: var(--avg-primary);
}

/* Steps (collapsible) */
.avg-calc-steps {
	margin-top: 20px;
	border-top: 1px solid var(--avg-border);
	padding-top: 15px;
}
.avg-calc-steps summary {
	font-weight: 600;
	cursor: pointer;
	outline: none;
	user-select: none;
}
.avg-calc-steps-content {
	margin-top: 12px;
	padding-left: 10px;
	font-size: 0.95rem;
	line-height: 1.6;
}

/* Notification popup */
.avg-calc-notification {
	position: fixed;
	bottom: 30px;
	right: 30px;
	background: var(--avg-success);
	color: white;
	padding: 12px 25px;
	border-radius: 8px;
	box-shadow: 0 4px 15px rgba(0,0,0,0.2);
	transform: translateY(100px);
	opacity: 0;
	transition: transform 0.3s ease, opacity 0.3s ease;
	z-index: 9999;
	font-weight: 500;
}
.avg-calc-notification.show {
	transform: translateY(0);
	opacity: 1;
}

/* Responsive */
@media (max-width: 600px) {
	.avg-calc-wrapper {
		padding: 20px;
		margin: 20px;
	}
	.avg-calc-buttons {
		flex-direction: column;
	}
	.avg-calc-result-body {
		grid-template-columns: 1fr;
	}
	.avg-calc-average {
		grid-column: span 1;
	}
}