/* Finance Toolkit Pro — frontend styles */

.ftp-calculator {
	--ftp-accent: #2563eb;
	--ftp-accent-dark: #1d4ed8;
	--ftp-bg: #ffffff;
	--ftp-surface: #f8fafc;
	--ftp-border: #e2e8f0;
	--ftp-text: #0f172a;
	--ftp-text-muted: #64748b;
	--ftp-error: #dc2626;
	--ftp-radius: 14px;

	box-sizing: border-box;
	max-width: 760px;
	margin: 1.5rem auto;
	padding: 1.75rem;
	background: var(--ftp-bg);
	border: 1px solid var(--ftp-border);
	border-radius: var(--ftp-radius);
	box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--ftp-text);
}

.ftp-calculator *,
.ftp-calculator *::before,
.ftp-calculator *::after {
	box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
	.ftp-calculator {
		--ftp-bg: #0f172a;
		--ftp-surface: #1e293b;
		--ftp-border: #334155;
		--ftp-text: #f1f5f9;
		--ftp-text-muted: #94a3b8;
	}
}

.ftp-calc-header { margin-bottom: 1.25rem; }
.ftp-calc-title { font-size: 1.35rem; font-weight: 700; margin: 0 0 0.35rem; }
.ftp-calc-desc { color: var(--ftp-text-muted); font-size: 0.92rem; margin: 0; }

.ftp-field-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 1rem 1.25rem;
}

.ftp-field { display: flex; flex-direction: column; gap: 0.35rem; }
.ftp-field label { font-size: 0.85rem; font-weight: 600; color: var(--ftp-text); }

.ftp-input-wrap {
	display: flex;
	align-items: center;
	border: 1px solid var(--ftp-border);
	border-radius: 8px;
	background: var(--ftp-surface);
	overflow: hidden;
}
.ftp-input-wrap:focus-within { border-color: var(--ftp-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ftp-accent) 20%, transparent); }
.ftp-affix { padding: 0 0.6rem; color: var(--ftp-text-muted); font-size: 0.85rem; user-select: none; }

.ftp-input,
.ftp-input-wrap input {
	width: 100%;
	border: none;
	background: transparent;
	padding: 0.6rem 0.7rem;
	font-size: 0.95rem;
	color: var(--ftp-text);
	outline: none;
}
select.ftp-input {
	border: 1px solid var(--ftp-border);
	border-radius: 8px;
	background: var(--ftp-surface);
}
.ftp-input.has-error,
.ftp-input-wrap:has(.has-error) { border-color: var(--ftp-error); }
.ftp-field-error { color: var(--ftp-error); font-size: 0.78rem; min-height: 1em; }

.ftp-calc-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }

.ftp-btn {
	appearance: none;
	border: 1px solid transparent;
	border-radius: 8px;
	padding: 0.65rem 1.25rem;
	font-size: 0.92rem;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.05s ease, opacity 0.15s ease, background 0.15s ease;
}
.ftp-btn:active { transform: translateY(1px); }
.ftp-btn-primary { background: var(--ftp-accent); color: #fff; }
.ftp-btn-primary:hover { background: var(--ftp-accent-dark); }
.ftp-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.ftp-btn-ghost { background: transparent; color: var(--ftp-text-muted); border-color: var(--ftp-border); }
.ftp-btn-ghost:hover { background: var(--ftp-surface); }
.ftp-btn-outline { background: transparent; border-color: var(--ftp-border); color: var(--ftp-text); font-size: 0.82rem; padding: 0.5rem 0.9rem; }
.ftp-btn-outline:hover { background: var(--ftp-surface); border-color: var(--ftp-accent); }

.ftp-loading {
	margin-top: 1rem;
	font-size: 0.88rem;
	color: var(--ftp-text-muted);
}
.ftp-loading::before {
	content: "";
	display: inline-block;
	width: 14px; height: 14px;
	margin-right: 8px;
	border: 2px solid var(--ftp-border);
	border-top-color: var(--ftp-accent);
	border-radius: 50%;
	animation: ftp-spin 0.7s linear infinite;
	vertical-align: -2px;
}
@keyframes ftp-spin { to { transform: rotate(360deg); } }

.ftp-results {
	margin-top: 1.75rem;
	padding-top: 1.5rem;
	border-top: 1px solid var(--ftp-border);
}
.ftp-results-title { font-size: 1.05rem; margin: 0 0 1rem; }

.ftp-summary-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
	gap: 0.75rem;
	margin-bottom: 1.5rem;
}
.ftp-summary-item {
	background: var(--ftp-surface);
	border: 1px solid var(--ftp-border);
	border-radius: 10px;
	padding: 0.85rem 1rem;
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
}
.ftp-summary-label { font-size: 0.78rem; color: var(--ftp-text-muted); }
.ftp-summary-value { font-size: 1.15rem; font-weight: 700; color: var(--ftp-accent); }

.ftp-chart-wrap { position: relative; height: 280px; margin-bottom: 1.5rem; }

.ftp-table-wrap { overflow-x: auto; margin-bottom: 1.5rem; }
.ftp-table-results { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.ftp-table-results th,
.ftp-table-results td {
	padding: 0.55rem 0.75rem;
	border-bottom: 1px solid var(--ftp-border);
	text-align: left;
	white-space: nowrap;
}
.ftp-table-results thead th { color: var(--ftp-text-muted); font-weight: 600; background: var(--ftp-surface); }
.ftp-table-results tbody tr:hover { background: var(--ftp-surface); }

.ftp-export-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* --- Master selector (dropdown between calculators) --- */
.ftp-master { max-width: 760px; margin: 0 auto; }
.ftp-master-select-wrap { margin-bottom: 1rem; }
.ftp-master-label { display: block; font-weight: 600; margin-bottom: 0.4rem; }
.ftp-master-select {
	width: 100%;
	max-width: 420px;
	padding: 0.65rem 0.8rem;
	border-radius: 8px;
	border: 1px solid #e2e8f0;
	font-size: 0.95rem;
}

/* --- SEO index / tool page --- */
.ftp-container { max-width: 960px; margin: 0 auto; padding: 2rem 1rem; }
.ftp-index-title { font-size: 2rem; margin-bottom: 0.5rem; }
.ftp-index-sub { color: #64748b; margin-bottom: 2rem; }
.ftp-index-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
	gap: 1rem;
}
.ftp-index-card {
	display: block;
	padding: 1.25rem;
	border: 1px solid #e2e8f0;
	border-radius: 12px;
	text-decoration: none;
	color: inherit;
	transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.ftp-index-card:hover { box-shadow: 0 4px 14px rgba(15,23,42,0.08); transform: translateY(-2px); }
.ftp-index-card h2 { font-size: 1.1rem; margin: 0 0 0.4rem; }
.ftp-index-card p { font-size: 0.88rem; color: #64748b; margin: 0; }
.ftp-tool-article-header { margin-bottom: 1rem; }
.ftp-tool-back { margin-top: 1.5rem; }

@media print {
	.ftp-calc-form, .ftp-export-actions, .ftp-loading { display: none !important; }
}

@media (max-width: 480px) {
	.ftp-calculator { padding: 1.1rem; }
	.ftp-calc-actions { flex-direction: column; }
	.ftp-calc-actions .ftp-btn { width: 100%; }
}