/* ==========================================================================
   Personal Finance Advisor - Frontend Styles
   ========================================================================== */

.aifa-app {
	--aifa-primary: #6d28d9;
	--aifa-primary-2: #4f46e5;
	--aifa-accent: #10b981;
	--aifa-danger: #ef4444;
	--aifa-warning: #f59e0b;
	--aifa-bg: #f7f7fb;
	--aifa-card-bg: #ffffff;
	--aifa-text: #1f2330;
	--aifa-text-muted: #6b7280;
	--aifa-border: #dfe1ee;
	--aifa-border-strong: #c9cce3;
	--aifa-radius: 16px;
	--aifa-shadow: 0 10px 30px rgba(31, 35, 48, 0.06);

	max-width: 960px;
	margin: 0 auto;
	color: var(--aifa-text);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	line-height: 1.55;
}

@media (prefers-color-scheme: dark) {
	.aifa-app {
		--aifa-bg: #0f1117;
		--aifa-card-bg: #171a23;
		--aifa-text: #eef0f6;
		--aifa-text-muted: #9aa0b4;
		--aifa-border: #2c3245;
		--aifa-border-strong: #3c4460;
		--aifa-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
	}
}

.aifa-app * {
	box-sizing: border-box;
}

.aifa-card {
	position: relative;
	background: var(--aifa-card-bg);
	border: 1.5px solid var(--aifa-border);
	border-radius: var(--aifa-radius);
	box-shadow: var(--aifa-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.02);
	padding: 32px;
	margin-bottom: 24px;
	animation: aifa-fade-in 0.4s ease;
	overflow: hidden;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Decorative gradient accent bar along the top edge of every card - gives
   the panels a distinct, premium border treatment instead of a plain line. */
.aifa-card::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 4px;
	background: linear-gradient(90deg, var(--aifa-primary), var(--aifa-primary-2), var(--aifa-accent));
	opacity: 0.9;
}

.aifa-card:hover {
	border-color: var(--aifa-border-strong);
}

@keyframes aifa-fade-in {
	from { opacity: 0; transform: translateY(8px); }
	to { opacity: 1; transform: translateY(0); }
}

.aifa-form-header h2 {
	margin: 0 0 6px;
	font-size: 26px;
	font-weight: 700;
	background: linear-gradient(135deg, var(--aifa-primary), var(--aifa-primary-2));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.aifa-form-header p {
	margin: 0 0 24px;
	color: var(--aifa-text-muted);
}

.aifa-grid-2 {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 18px;
}

.aifa-grid-3 {
	display: grid;
	grid-template-columns: 1fr 1fr 1fr;
	gap: 18px;
}

@media (max-width: 680px) {
	.aifa-grid-2,
	.aifa-grid-3 {
		grid-template-columns: 1fr;
	}
}

.aifa-field {
	margin-bottom: 20px;
}

.aifa-field label {
	display: block;
	font-weight: 600;
	font-size: 13.5px;
	margin-bottom: 6px;
	letter-spacing: 0.01em;
}

.aifa-required {
	color: var(--aifa-danger);
}

.aifa-help {
	color: var(--aifa-text-muted);
	font-size: 13px;
	margin: 0 0 12px;
}

.aifa-app input[type="number"],
.aifa-app input[type="text"],
.aifa-app select,
.aifa-app textarea {
	width: 100%;
	padding: 11px 14px;
	border: 2px solid var(--aifa-border);
	border-radius: 10px;
	background: var(--aifa-bg);
	color: var(--aifa-text);
	font-size: 14.5px;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
	font-family: inherit;
}

.aifa-app input:hover,
.aifa-app select:hover,
.aifa-app textarea:hover {
	border-color: var(--aifa-border-strong);
}

.aifa-app input:focus,
.aifa-app select:focus,
.aifa-app textarea:focus {
	outline: none;
	border-color: var(--aifa-primary);
	box-shadow: 0 0 0 4px rgba(109, 40, 217, 0.15);
}

.aifa-app textarea {
	resize: vertical;
}

/* Expense category grid */
.aifa-expense-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 14px;
}

@media (max-width: 900px) {
	.aifa-expense-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
	.aifa-expense-grid { grid-template-columns: 1fr; }
}

.aifa-expense-category {
	border: 2px solid var(--aifa-border);
	border-radius: 12px;
	padding: 14px;
	background: var(--aifa-bg);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.aifa-expense-category:hover {
	border-color: var(--aifa-primary);
	box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.08);
}

.aifa-expense-category:focus-within {
	border-color: var(--aifa-primary);
	box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.15);
}

.aifa-expense-category-header {
	font-weight: 600;
	font-size: 13.5px;
	margin-bottom: 8px;
}

.aifa-expense-entry {
	margin-bottom: 6px;
	display: flex;
	gap: 6px;
	align-items: center;
}

.aifa-expense-entry input {
	padding: 8px 10px;
	font-size: 13.5px;
}

.aifa-remove-entry {
	background: none;
	border: none;
	color: var(--aifa-danger);
	cursor: pointer;
	font-size: 16px;
	line-height: 1;
	padding: 4px 6px;
}

.aifa-add-entry {
	background: none;
	border: none;
	color: var(--aifa-primary);
	font-weight: 600;
	font-size: 12.5px;
	cursor: pointer;
	padding: 4px 0;
}

.aifa-add-entry:hover {
	text-decoration: underline;
}

/* Summary box */
.aifa-summary-box {
	background: linear-gradient(135deg, rgba(109, 40, 217, 0.06), rgba(79, 70, 229, 0.06));
	border: 1.5px solid rgba(109, 40, 217, 0.18);
	border-radius: 12px;
	padding: 18px 20px;
	margin: 8px 0 24px;
}

.aifa-summary-box h3 {
	margin: 0 0 12px;
	font-size: 15px;
}

.aifa-summary-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 12px;
}

@media (max-width: 720px) {
	.aifa-summary-grid { grid-template-columns: repeat(2, 1fr); }
}

.aifa-summary-item {
	background: var(--aifa-card-bg);
	border-radius: 10px;
	padding: 12px;
	border: 1.5px solid var(--aifa-border);
	transition: border-color 0.15s ease;
}

.aifa-summary-item:hover {
	border-color: var(--aifa-border-strong);
}

.aifa-summary-item .aifa-summary-label {
	font-size: 11.5px;
	color: var(--aifa-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	margin-bottom: 4px;
}

.aifa-summary-item .aifa-summary-value {
	font-size: 17px;
	font-weight: 700;
}

.aifa-summary-item.is-negative .aifa-summary-value {
	color: var(--aifa-danger);
}

.aifa-summary-item.is-positive .aifa-summary-value {
	color: var(--aifa-accent);
}

/* Buttons */
.aifa-form-actions {
	display: flex;
	justify-content: flex-end;
	align-items: center;
	gap: 12px;
	margin-top: 8px;
}

.aifa-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	border: none;
	border-radius: 999px;
	padding: 13px 26px;
	font-size: 14.5px;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease, border-color 0.12s ease, background 0.12s ease;
	font-family: inherit;
}

.aifa-btn:active {
	transform: translateY(1px);
}

.aifa-btn-icon {
	flex-shrink: 0;
}

.aifa-btn-primary {
	background: linear-gradient(135deg, var(--aifa-primary), var(--aifa-primary-2));
	color: #fff;
	border: 2px solid transparent;
	box-shadow: 0 6px 16px rgba(109, 40, 217, 0.35);
}

.aifa-btn-primary:hover {
	box-shadow: 0 8px 22px rgba(109, 40, 217, 0.45);
}

.aifa-btn-primary:focus-visible {
	border-color: rgba(255, 255, 255, 0.7);
	box-shadow: 0 0 0 4px rgba(109, 40, 217, 0.25), 0 8px 22px rgba(109, 40, 217, 0.45);
}

.aifa-btn-primary:disabled {
	opacity: 0.7;
	cursor: not-allowed;
}

/* Gradient variant used for the main "Generate Advice" call-to-action -
   a distinct blue-to-teal pill with a bolt icon. Declared after (and with
   the same selector chain as) .aifa-btn-primary so its rules always win
   regardless of source order - a plain .aifa-btn-gradient:hover placed
   before .aifa-btn-primary:hover would otherwise get silently overridden
   since both have equal specificity. */
.aifa-btn-primary.aifa-btn-gradient {
	background: linear-gradient(135deg, #4338ca, #0ea5e9);
	box-shadow: 0 6px 18px rgba(14, 165, 233, 0.35);
}

.aifa-btn-primary.aifa-btn-gradient:hover {
	box-shadow: 0 8px 24px rgba(14, 165, 233, 0.45);
}

.aifa-btn-primary.aifa-btn-gradient:focus-visible {
	border-color: rgba(255, 255, 255, 0.7);
	box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.25), 0 8px 24px rgba(14, 165, 233, 0.45);
}

.aifa-btn-sm {
	padding: 9px 16px;
	font-size: 13px;
}

.aifa-btn-ghost {
	background: var(--aifa-bg);
	color: var(--aifa-text);
	border: 2px solid var(--aifa-border);
}

.aifa-btn-ghost:hover {
	border-color: var(--aifa-primary);
	color: var(--aifa-primary);
}

.aifa-btn-outline {
	background: var(--aifa-card-bg);
	color: var(--aifa-text);
	border: 2px solid var(--aifa-border);
	border-radius: 999px;
}

.aifa-btn-outline:hover {
	border-color: var(--aifa-border-strong);
	background: var(--aifa-bg);
}

.aifa-spinner {
	width: 16px;
	height: 16px;
	border: 2px solid rgba(255, 255, 255, 0.4);
	border-top-color: #fff;
	border-radius: 50%;
	animation: aifa-spin 0.7s linear infinite;
	display: none;
}

/* Author CSS always overrides the browser's built-in [hidden] rule, even
   when the hidden attribute is present, if the author rule sets display
   directly on the class (as above). Without this override the spinner
   showed constantly instead of only while a report is generating. */
.aifa-spinner:not( [hidden] ) {
	display: inline-block;
}

@keyframes aifa-spin {
	to { transform: rotate(360deg); }
}

.aifa-disclaimer {
	margin-top: 16px;
	font-size: 12px;
	color: var(--aifa-text-muted);
	text-align: right;
}

/* Results card */
.aifa-results-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 6px;
}

.aifa-results-header h2 {
	margin: 0;
	font-size: 22px;
}

.aifa-badges {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

.aifa-badge {
	display: inline-block;
	padding: 5px 12px;
	border-radius: 999px;
	font-size: 12px;
	font-weight: 600;
	background: rgba(109, 40, 217, 0.1);
	color: var(--aifa-primary);
}

.aifa-badge.aifa-badge-green {
	background: rgba(16, 185, 129, 0.12);
	color: var(--aifa-accent);
}

.aifa-results-toolbar {
	display: flex;
	gap: 10px;
	flex-wrap: wrap;
	margin: 16px 0 22px;
	padding-bottom: 18px;
	border-bottom: 1px solid var(--aifa-border);
}

.aifa-advice-content {
	font-size: 15px;
}

.aifa-advice-content .aifa-h2 {
	font-size: 20px;
	margin: 28px 0 12px;
	padding-bottom: 8px;
	border-bottom: 2px solid var(--aifa-primary);
}

.aifa-advice-content .aifa-h3 {
	font-size: 17px;
	margin: 22px 0 10px;
	color: var(--aifa-primary);
}

.aifa-advice-content .aifa-h3::before {
	content: "▸ ";
}

.aifa-advice-content .aifa-h4 {
	font-size: 15px;
	margin: 16px 0 8px;
}

.aifa-advice-content .aifa-ul,
.aifa-advice-content .aifa-ol {
	margin: 0 0 14px;
	padding-left: 22px;
}

.aifa-advice-content li {
	margin-bottom: 6px;
}

.aifa-advice-content p {
	margin: 0 0 14px;
}

.aifa-advice-content:first-child > p:first-of-type {
	background: rgba(245, 158, 11, 0.1);
	border-left: 3px solid var(--aifa-warning);
	padding: 10px 14px;
	border-radius: 8px;
	font-size: 13px;
}

/* Loading skeleton */
.aifa-skeleton {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.aifa-skeleton-line {
	height: 14px;
	border-radius: 6px;
	background: linear-gradient(90deg, var(--aifa-border) 25%, rgba(109, 40, 217, 0.12) 50%, var(--aifa-border) 75%);
	background-size: 200% 100%;
	animation: aifa-shimmer 1.4s infinite;
}

@keyframes aifa-shimmer {
	0% { background-position: 200% 0; }
	100% { background-position: -200% 0; }
}

/* Error card */
.aifa-error-card {
	border-color: var(--aifa-danger);
	border-width: 1.5px;
	background: rgba(239, 68, 68, 0.06);
}

.aifa-error-card::before {
	background: var(--aifa-danger);
	opacity: 1;
}

.aifa-error-card p {
	margin: 0;
	color: var(--aifa-danger);
	font-weight: 600;
}

/* History list */
.aifa-history-card h3 {
	margin-top: 0;
}

.aifa-history-ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.aifa-history-ul li {
	display: flex;
	align-items: center;
	gap: 14px;
	flex-wrap: wrap;
	padding: 12px 0;
	border-bottom: 1px solid var(--aifa-border);
}

.aifa-history-ul li:last-child {
	border-bottom: none;
}

.aifa-history-date {
	font-weight: 600;
	font-size: 13.5px;
}

.aifa-history-meta {
	color: var(--aifa-text-muted);
	font-size: 12.5px;
	flex: 1;
}

.aifa-link-btn {
	background: none;
	border: none;
	color: var(--aifa-primary);
	font-weight: 600;
	font-size: 13px;
	cursor: pointer;
	padding: 4px 8px;
}

.aifa-link-btn:hover {
	text-decoration: underline;
}

.aifa-history-delete {
	color: var(--aifa-danger);
}

/* Print styles */
@media print {
	.aifa-form-card,
	.aifa-results-toolbar,
	.aifa-history-card {
		display: none !important;
	}
	.aifa-results-card {
		box-shadow: none;
		border: none;
	}
}