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

:root {
	color-scheme: light;
	--text: #1f2328;
	--muted: #57606a;
	--bg: #ffffff;
	--card-bg: #f7f8fa;
	--border: #e5e7eb;
	--input-bg: #ffffff;
	--accent: #3b82d4;
	--accent-hover: #2d6db5;
	--accent-soft: #eef4fc;
	--danger: #c0392b;
	--danger-soft: #fdf3f2;
	--success: #1a7f37;
	--modal-bg: #ffffff;
	--backdrop: rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] {
	color-scheme: dark;
	--text: #e6e8eb;
	--muted: #9aa0a8;
	--bg: #17191d;
	--card-bg: #22262c;
	--border: #363c44;
	--input-bg: #2a2f37;
	--accent: #4a9eff;
	--accent-hover: #6db0f0;
	--accent-soft: #1e2f42;
	--danger: #e05d4f;
	--danger-soft: #3a2322;
	--success: #57ab5a;
	--modal-bg: #2a2f37;
	--backdrop: rgba(0, 0, 0, 0.6);
}

body {
	font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
	font-size: 14px;
	line-height: 1.6;
	color: var(--text);
	background: var(--bg);
	padding: 32px 16px 48px;
	transition: background-color 0.2s ease, color 0.2s ease;
}

.container {
	max-width: 760px;
	margin: 0 auto;
}

.app-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	flex-wrap: wrap;
	margin-bottom: 4px;
}

h1 {
	font-size: 20px;
	font-weight: 600;
	margin-bottom: 0;
}

.subtitle {
	color: var(--muted);
	margin-bottom: 24px;
	font-size: 13px;
}

.card {
	background: var(--card-bg);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 20px 24px;
	margin-bottom: 24px;
	transition: background-color 0.2s ease, border-color 0.2s ease;
}

.form-section-title {
	font-size: 13px;
	font-weight: 700;
	color: var(--muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	margin-bottom: 14px;
}

.form-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 16px 24px;
}

/* Single-column on narrow screens */
@media (max-width: 480px) {
	.form-grid {
		grid-template-columns: 1fr;
	}
}

.field {
	display: flex;
	flex-direction: column;
	gap: 4px;
}

label {
	font-size: 12px;
	font-weight: 600;
	color: var(--muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

input, select {
	border: 1px solid var(--border);
	border-radius: 5px;
	padding: 7px 10px;
	font-size: 14px;
	font-family: inherit;
	color: var(--text);
	background: var(--input-bg);
	width: 100%;
	transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

input:focus, select:focus {
	outline: 2px solid var(--accent);
	outline-offset: -1px;
}

optgroup {
	font-style: normal;
	font-weight: 600;
	color: var(--muted);
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

optgroup option {
	font-weight: normal;
	font-size: 14px;
	color: var(--text);
	text-transform: none;
	letter-spacing: normal;
	padding-left: 8px;
}

.btn {
	display: inline-block;
	padding: 9px 22px;
	background: var(--accent);
	color: #ffffff;
	border: none;
	border-radius: 5px;
	font-size: 14px;
	font-family: inherit;
	font-weight: 600;
	cursor: pointer;
	white-space: nowrap;
	transition: background-color 0.2s ease;
}

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

.btn-secondary {
	background: var(--bg);
	color: var(--accent);
	border: 1px solid var(--accent);
	transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover { background: var(--accent-soft); }

.btn-danger {
	background: var(--bg);
	color: var(--danger);
	border: 1px solid var(--danger);
	transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-danger:hover { background: var(--danger-soft); }

.btn-row {
	display: flex;
	gap: 10px;
	align-items: center;
	margin-top: 18px;
	flex-wrap: wrap;
}

/* Stack buttons full-width on mobile */
@media (max-width: 480px) {
	.btn-row {
		flex-direction: column;
		align-items: stretch;
	}

	.btn-row .btn {
		text-align: center;
	}
}

.scenarios-bar {
	display: flex;
	gap: 10px;
	align-items: center;
	padding: 12px 0 4px;
	border-top: 1px solid var(--border);
	margin-top: 16px;
	flex-wrap: wrap;
}

.scenarios-bar label {
	font-size: 12px;
	font-weight: 600;
	color: var(--muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	white-space: nowrap;
}

.scenarios-bar select {
	flex: 1;
	min-width: 140px;
}

/* Stack scenario controls on mobile */
@media (max-width: 480px) {
	.scenarios-bar {
		flex-direction: column;
		align-items: stretch;
	}

	.scenarios-bar label {
		margin-bottom: 2px;
	}

	.scenarios-bar .btn {
		text-align: center;
	}
}

#noScenarios {
	font-size: 13px;
	color: var(--muted);
	font-style: italic;
}

/* Summary boxes */
.summary {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 12px;
	margin-bottom: 24px;
}

/* Two boxes per row on narrow screens, one below */
@media (max-width: 560px) {
	.summary {
		grid-template-columns: 1fr 1fr;
	}
}

@media (max-width: 360px) {
	.summary {
		grid-template-columns: 1fr;
	}
}

.summary-box {
	background: var(--card-bg);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 14px 16px;
	transition: background-color 0.2s ease, border-color 0.2s ease;
}

.summary-box .label {
	font-size: 11px;
	font-weight: 600;
	color: var(--muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	margin-bottom: 4px;
}

.summary-box .value {
	font-size: 20px;
	font-weight: 700;
	color: var(--text);
}

/* Slightly smaller value text on mobile so numbers don't clip */
@media (max-width: 480px) {
	.summary-box .value {
		font-size: 16px;
	}
}

.summary-box .sub {
	font-size: 11px;
	color: var(--muted);
	margin-top: 2px;
}

.accent { color: var(--accent); }
.warn   { color: var(--danger); }

/* Table */
.table-wrap {
	overflow-x: auto;
	overflow-y: auto;
	max-height: 480px;
	border: 1px solid var(--border);
	border-radius: 8px;
	-webkit-overflow-scrolling: touch; /* smooth scroll on iOS */
}

table {
	width: 100%;
	border-collapse: collapse;
	font-size: 13px;
}

/* Tighter font on mobile so the table fits */
@media (max-width: 480px) {
	table {
		font-size: 11px;
	}

	thead th,
	tbody td {
		padding: 6px 8px;
	}
}

thead th {
	position: sticky;
	top: 0;
	z-index: 1;
	background: var(--card-bg);
	font-weight: 600;
	text-align: right;
	padding: 9px 12px;
	border-bottom: 1px solid var(--border);
	white-space: nowrap;
	color: var(--muted);
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	transition: background-color 0.2s ease, color 0.2s ease;
}

thead th:first-child { text-align: center; }

tbody tr:nth-child(even) td { background: var(--card-bg); }

tbody td {
	padding: 8px 12px;
	text-align: right;
	border-bottom: 1px solid var(--border);
	color: var(--text);
	font-variant-numeric: tabular-nums;
	transition: background-color 0.2s ease, color 0.2s ease;
}

tbody tr:last-child td { border-bottom: none; }

tbody td:first-child {
	text-align: center;
	font-weight: 600;
	color: var(--muted);
}

.interest-cell  { color: var(--danger); }
.principal-cell { color: var(--success); }

.hidden { display: none !important; }

.section-title {
	font-size: 13px;
	font-weight: 700;
	color: var(--text);
	margin-bottom: 10px;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

footer {
	margin-top: 48px;
	padding-top: 12px;
	border-top: 1px solid var(--border);
	text-align: center;
	font-size: 12px;
	color: var(--muted);
}

/* ── WebDAV connect bar ─────────────────────────────────────────────────── */
.dav-connect-bar {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 0 0;
	border-top: 1px solid var(--border);
	margin-top: 12px;
	flex-wrap: wrap;
}

.btn-sm {
	padding: 5px 14px;
	font-size: 13px;
}

.dav-indicator {
	flex: 1;
	font-size: 12px;
	color: var(--muted);
	font-style: italic;
}

.dav-connected {
	color: var(--success);
	font-style: normal;
	font-weight: 600;
}

/* ── Scenario status banner ─────────────────────────────────────────────── */
.scenario-status {
	display: block;
	margin-top: 8px;
	font-size: 12px;
	color: var(--success);
}

.scenario-status-error {
	color: var(--danger);
}

/* ── Connect modal ──────────────────────────────────────────────────────── */
.modal-backdrop {
	position: fixed;
	inset: 0;
	background: var(--backdrop);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 100;
	padding: 16px;
}

.modal {
	background: var(--modal-bg);
	border: 1px solid var(--border);
	border-radius: 10px;
	padding: 24px 28px;
	width: 100%;
	max-width: 420px;
	transition: background-color 0.2s ease, border-color 0.2s ease;
}

.modal-title {
	font-size: 16px;
	font-weight: 700;
	margin-bottom: 8px;
	color: var(--text);
}

.modal-note {
	font-size: 12px;
	color: var(--muted);
	margin-bottom: 18px;
	line-height: 1.5;
}

.modal-error {
	font-size: 12px;
	color: var(--danger);
	margin-top: 10px;
	min-height: 18px;
}

.modal-actions {
	display: flex;
	gap: 10px;
	margin-top: 18px;
}

@media (max-width: 480px) {
	.dav-connect-bar {
		flex-direction: column;
		align-items: stretch;
	}
	.dav-connect-bar .btn {
		text-align: center;
	}
	.modal-actions {
		flex-direction: column;
	}
}