/* ==========================================================================
   Business Finance Advisor — Front-End App Styles
   Vanilla CSS, scoped under .bfa-app. Apple-inspired, glassmorphic, responsive.
   ========================================================================== */

.bfa-app {
	--bfa-bg: #f5f5f7;
	--bfa-surface: rgba(255, 255, 255, 0.72);
	--bfa-surface-solid: #ffffff;
	--bfa-border: rgba(60, 60, 67, 0.12);
	--bfa-text: #1d1d1f;
	--bfa-text-muted: #6e6e73;
	--bfa-accent-1: #4f46e5;
	--bfa-accent-2: #06b6d4;
	--bfa-gradient: linear-gradient(135deg, var(--bfa-accent-1) 0%, var(--bfa-accent-2) 100%);
	--bfa-income: #10b981;
	--bfa-expense: #f43f5e;
	--bfa-radius-lg: 20px;
	--bfa-radius-md: 14px;
	--bfa-radius-sm: 10px;
	--bfa-shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
	--bfa-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
	--bfa-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

	all: initial;
	display: block;
	font-family: var(--bfa-font);
	color: var(--bfa-text);
	background: var(--bfa-bg);
	border-radius: var(--bfa-radius-lg);
	padding: clamp(16px, 4vw, 40px);
	box-sizing: border-box;
	-webkit-font-smoothing: antialiased;
}

.bfa-app *,
.bfa-app *::before,
.bfa-app *::after {
	box-sizing: border-box;
	font-family: inherit;
}

/* Guarantee the hidden attribute always wins, even over rules below that set
   display explicitly (e.g. .bfa-loading-panel { display:flex }). Without this,
   an author-stylesheet display declaration can outrank the browser's default
   [hidden]{display:none} rule and cause panels to show simultaneously. */
.bfa-app [hidden] {
	display: none !important;
}

@media (prefers-color-scheme: dark) {
	.bfa-app {
		--bfa-bg: #000000;
		--bfa-surface: rgba(28, 28, 30, 0.72);
		--bfa-surface-solid: #1c1c1e;
		--bfa-border: rgba(255, 255, 255, 0.12);
		--bfa-text: #f5f5f7;
		--bfa-text-muted: #a1a1a6;
		--bfa-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
		--bfa-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
	}
}

.bfa-shell {
	max-width: 880px;
	margin: 0 auto;
}

/* ---------- Panels ---------- */

.bfa-panel {
	background: var(--bfa-surface);
	backdrop-filter: blur(20px) saturate(180%);
	-webkit-backdrop-filter: blur(20px) saturate(180%);
	border: 1px solid var(--bfa-border);
	border-radius: var(--bfa-radius-lg);
	box-shadow: var(--bfa-shadow);
	padding: clamp(20px, 4vw, 36px);
}

/* ---------- Header ---------- */

.bfa-app-header {
	display: flex;
	align-items: flex-start;
	gap: 14px;
	margin-bottom: 28px;
}

.bfa-app-header-icon {
	flex-shrink: 0;
	width: 46px;
	height: 46px;
	border-radius: 13px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--bfa-gradient);
	color: #fff;
	box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}

.bfa-app-header h2 {
	font-size: 22px;
	font-weight: 650;
	margin: 0 0 4px;
	letter-spacing: -0.01em;
}

.bfa-app-header p {
	margin: 0;
	color: var(--bfa-text-muted);
	font-size: 14px;
}

/* ---------- Form fields ---------- */

.bfa-field-row {
	display: grid;
	grid-template-columns: 1.4fr 1fr 1fr;
	gap: 14px;
	margin-bottom: 22px;
}

.bfa-field-narrow {
	min-width: 0;
}

.bfa-field {
	display: flex;
	flex-direction: column;
	gap: 6px;
	margin-bottom: 18px;
}

.bfa-field label {
	font-size: 13px;
	font-weight: 600;
	color: var(--bfa-text-muted);
}

.bfa-app input[type="text"],
.bfa-app input[type="number"],
.bfa-app input[type="month"],
.bfa-app select,
.bfa-app textarea {
	appearance: none;
	-webkit-appearance: none;
	width: 100%;
	background: var(--bfa-surface-solid);
	border: 1px solid var(--bfa-border);
	border-radius: var(--bfa-radius-sm);
	padding: 11px 13px;
	font-size: 14.5px;
	color: var(--bfa-text);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.bfa-app textarea {
	resize: vertical;
	min-height: 72px;
	font-family: inherit;
}

.bfa-app input:focus-visible,
.bfa-app select:focus-visible,
.bfa-app textarea:focus-visible,
.bfa-app button:focus-visible {
	outline: 2px solid var(--bfa-accent-1);
	outline-offset: 2px;
	border-color: var(--bfa-accent-1);
}

/* ---------- Sections (income / expense) ---------- */

.bfa-section {
	margin-bottom: 24px;
}

.bfa-section-heading {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 12px;
}

.bfa-section-heading h3 {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 16px;
	font-weight: 650;
	margin: 0;
}

.bfa-dot {
	width: 9px;
	height: 9px;
	border-radius: 50%;
	display: inline-block;
}

.bfa-dot-income {
	background: var(--bfa-income);
}

.bfa-dot-expense {
	background: var(--bfa-expense);
}

.bfa-section-total {
	font-size: 13px;
	color: var(--bfa-text-muted);
}

.bfa-section-total strong {
	color: var(--bfa-text);
	font-variant-numeric: tabular-nums;
}

.bfa-rows {
	display: flex;
	flex-direction: column;
	gap: 8px;
	margin-bottom: 10px;
}

.bfa-row {
	display: grid;
	grid-template-columns: 1fr 140px 36px;
	gap: 8px;
	align-items: center;
	animation: bfaRowIn 0.18s ease;
}

@keyframes bfaRowIn {
	from {
		opacity: 0;
		transform: translateY(-4px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.bfa-row-delete {
	width: 36px;
	height: 36px;
	border-radius: var(--bfa-radius-sm);
	border: 1px solid var(--bfa-border);
	background: var(--bfa-surface-solid);
	color: var(--bfa-expense);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: background 0.15s ease, transform 0.1s ease;
}

.bfa-row-delete:hover {
	background: rgba(244, 63, 94, 0.1);
}

.bfa-row-delete:active {
	transform: scale(0.94);
}

/* ---------- Buttons ---------- */

.bfa-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font-size: 14px;
	font-weight: 600;
	border-radius: var(--bfa-radius-sm);
	padding: 11px 18px;
	cursor: pointer;
	border: 1px solid transparent;
	transition: transform 0.12s ease, box-shadow 0.15s ease, opacity 0.15s ease;
	white-space: nowrap;
}

.bfa-btn:active {
	transform: scale(0.97);
}

.bfa-btn-add {
	background: var(--bfa-surface-solid);
	border: 1px dashed var(--bfa-border);
	color: var(--bfa-accent-1);
	width: 100%;
}

.bfa-btn-add:hover {
	background: rgba(79, 70, 229, 0.06);
}

.bfa-btn-primary {
	background: var(--bfa-gradient);
	color: #fff;
	box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
}

.bfa-btn-primary:hover {
	box-shadow: 0 10px 26px rgba(79, 70, 229, 0.4);
}

.bfa-btn-primary:disabled {
	opacity: 0.6;
	cursor: not-allowed;
	box-shadow: none;
}

.bfa-btn-secondary {
	background: var(--bfa-surface-solid);
	border: 1px solid var(--bfa-border);
	color: var(--bfa-text);
}

.bfa-btn-secondary:hover {
	background: rgba(0, 0, 0, 0.03);
}

.bfa-btn-small {
	padding: 8px 14px;
	font-size: 13px;
}

.bfa-actions {
	display: flex;
	justify-content: flex-end;
	gap: 12px;
	margin-top: 8px;
}

.bfa-icon-btn {
	width: 38px;
	height: 38px;
	border-radius: 10px;
	border: 1px solid var(--bfa-border);
	background: var(--bfa-surface-solid);
	color: var(--bfa-text-muted);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.bfa-icon-btn:hover {
	background: rgba(79, 70, 229, 0.08);
	color: var(--bfa-accent-1);
}

.bfa-icon-btn:active {
	transform: scale(0.93);
}

/* ---------- Summary grid ---------- */

.bfa-summary-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 10px;
	margin: 24px 0;
}

.bfa-summary-card {
	background: var(--bfa-surface-solid);
	border: 1px solid var(--bfa-border);
	border-radius: var(--bfa-radius-md);
	padding: 14px 16px;
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.bfa-summary-highlight {
	background: var(--bfa-gradient);
	border: none;
}

.bfa-summary-highlight .bfa-summary-label,
.bfa-summary-highlight .bfa-summary-value {
	color: #fff;
}

.bfa-summary-label {
	font-size: 12px;
	color: var(--bfa-text-muted);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.03em;
}

.bfa-summary-value {
	font-size: 19px;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

/* ---------- Errors ---------- */

.bfa-error {
	margin-top: 14px;
	padding: 12px 14px;
	border-radius: var(--bfa-radius-sm);
	background: rgba(244, 63, 94, 0.1);
	border: 1px solid rgba(244, 63, 94, 0.3);
	color: var(--bfa-expense);
	font-size: 13.5px;
}

/* ---------- Loading panel ---------- */

.bfa-loading-panel {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 320px;
}

.bfa-loader {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 18px;
	text-align: center;
}

.bfa-loader-ring {
	width: 52px;
	height: 52px;
	border-radius: 50%;
	border: 3px solid var(--bfa-border);
	border-top-color: var(--bfa-accent-1);
	animation: bfaSpin 0.85s linear infinite;
}

@keyframes bfaSpin {
	to {
		transform: rotate(360deg);
	}
}

.bfa-loader p {
	color: var(--bfa-text-muted);
	font-size: 14.5px;
	margin: 0;
}

/* ---------- Results panel ---------- */

.bfa-results-header {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 16px;
	flex-wrap: wrap;
	margin-bottom: 22px;
	padding-bottom: 18px;
	border-bottom: 1px solid var(--bfa-border);
}

.bfa-results-header h2 {
	font-size: 20px;
	margin: 0 0 4px;
}

.bfa-results-header p {
	margin: 0;
	font-size: 13px;
	color: var(--bfa-text-muted);
}

.bfa-results-actions {
	display: flex;
	align-items: center;
	gap: 8px;
	flex-wrap: wrap;
}

.bfa-results-body {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.bfa-result-block {
	background: var(--bfa-surface-solid);
	border: 1px solid var(--bfa-border);
	border-radius: var(--bfa-radius-md);
	padding: 18px 20px;
}

.bfa-result-block h3 {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 15.5px;
	margin: 0 0 10px;
}

.bfa-result-block h4 {
	font-size: 13px;
	text-transform: uppercase;
	letter-spacing: 0.03em;
	color: var(--bfa-text-muted);
	margin: 14px 0 6px;
}

.bfa-result-block h4:first-of-type {
	margin-top: 4px;
}

.bfa-result-block p {
	font-size: 14px;
	line-height: 1.6;
	margin: 0 0 8px;
	color: var(--bfa-text);
}

.bfa-result-block ul {
	margin: 0;
	padding-left: 20px;
	display: flex;
	flex-direction: column;
	gap: 6px;
}

.bfa-result-block li {
	font-size: 14px;
	line-height: 1.55;
}

.bfa-badge {
	display: inline-flex;
	align-items: center;
	padding: 4px 12px;
	border-radius: 999px;
	font-size: 12.5px;
	font-weight: 650;
}

.bfa-badge-rating {
	background: var(--bfa-gradient);
	color: #fff;
}

.bfa-badge-priority-high {
	background: rgba(244, 63, 94, 0.14);
	color: var(--bfa-expense);
}

.bfa-badge-priority-medium {
	background: rgba(245, 158, 11, 0.16);
	color: #b45309;
}

.bfa-badge-priority-low {
	background: rgba(16, 185, 129, 0.14);
	color: var(--bfa-income);
}

.bfa-rating-row {
	display: flex;
	gap: 10px;
	flex-wrap: wrap;
	margin-bottom: 18px;
}

.bfa-week-block {
	margin-bottom: 12px;
}

.bfa-week-block:last-child {
	margin-bottom: 0;
}

.bfa-week-block strong {
	font-size: 13.5px;
}

/* ---------- Footer ---------- */

.bfa-app-footer {
	text-align: center;
	margin-top: 20px;
	font-size: 12px;
	color: var(--bfa-text-muted);
	opacity: 0.7;
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
	.bfa-field-row {
		grid-template-columns: 1fr;
	}

	.bfa-summary-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.bfa-row {
		grid-template-columns: 1fr 100px 36px;
	}

	.bfa-results-header {
		flex-direction: column;
	}

	.bfa-actions {
		flex-direction: column-reverse;
	}

	.bfa-actions .bfa-btn {
		width: 100%;
	}
}

@media (max-width: 480px) {
	.bfa-summary-grid {
		grid-template-columns: 1fr;
	}
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
	.bfa-app * {
		animation-duration: 0.001ms !important;
		transition-duration: 0.001ms !important;
	}
}

/* ---------- Print ---------- */

@media print {
	.bfa-form-panel,
	.bfa-loading-panel,
	.bfa-results-actions,
	.bfa-app-footer {
		display: none !important;
	}

	.bfa-app {
		background: #fff;
	}

	.bfa-panel {
		box-shadow: none;
		border: none;
		backdrop-filter: none;
	}
}