/**
 * Kalkulatory Oświatowe – wspólne style (v2, "modern & light").
 *
 * Założenia:
 * - Zmienne CSS w zakresie .kof-calculator, żeby łatwo nadpisać kolory
 *   z poziomu motywu / Dodatkowego CSS, bez ryzyka wycieku na resztę strony.
 * - Wszystko skalowalne (clamp/rem), pełna responsywność bez media query
 *   tam, gdzie się da, i z rozsądnymi breakpointami tam, gdzie trzeba.
 * - Rozmiar czcionki pól = 16px, żeby Safari na iOS nie robił auto-zoomu
 *   przy focusie (częsty, drażniący błąd w formularzach mobilnych).
 * - Klasy prefiksowane "kof-", żeby nie kolidować ze stylami motywu.
 */

.kof-calculator {
	/* Paleta */
	--kof-accent: #2563eb;
	--kof-accent-dark: #1d4ed8;
	--kof-accent-bg: #eff6ff;
	--kof-accent-border: #bfdbfe;

	--kof-success: #16a34a;
	--kof-success-dark: #15803d;
	--kof-success-bg: #f0fdf4;
	--kof-success-border: #86efac;

	--kof-error: #dc2626;
	--kof-error-bg: #fef2f2;
	--kof-error-border: #fca5a5;

	--kof-border: #e2e8f0;
	--kof-border-strong: #cbd5e1;
	--kof-bg: #ffffff;
	--kof-bg-muted: #f8fafc;
	--kof-text: #0f172a;
	--kof-text-muted: #64748b;

	--kof-radius-lg: 16px;
	--kof-radius-md: 10px;
	--kof-radius-sm: 8px;

	color-scheme: light;
	box-sizing: border-box;
	max-width: 640px;
	width: 100%;
	margin: 1.75em auto;
	padding: clamp(1.25rem, 4vw, 2rem);
	background: var(--kof-bg);
	border: 1px solid var(--kof-border);
	border-radius: var(--kof-radius-lg);
	box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px -12px rgba(15, 23, 42, 0.12);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	font-size: 16px;
	color: var(--kof-text);
	line-height: 1.5;
}

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

/* ---------- Nagłówek ---------- */

.kof-title {
	margin: 0 0 0.4em;
	font-size: clamp(1.15rem, 3.5vw, 1.4rem);
	font-weight: 700;
	line-height: 1.3;
	letter-spacing: -0.01em;
	color: var(--kof-text);
}

.kof-desc {
	margin: 0 0 1.5em;
	color: var(--kof-text-muted);
	font-size: 0.95rem;
}

/* ---------- Pola formularza ---------- */

.kof-field-inline {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem;
	margin-bottom: 1.5em;
}

.kof-field-inline .kof-field {
	flex: 1 1 220px;
	max-width: 320px;
}

.kof-field {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
	min-width: 0;
}

.kof-field label {
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--kof-text-muted);
	letter-spacing: 0.01em;
}

.kof-input,
.kof-select {
	width: 100%;
	padding: 0.7rem 0.85rem;
	font-size: 1rem; /* min. 16px – zapobiega auto-zoomowi na iOS */
	font-family: inherit;
	border: 1.5px solid var(--kof-border-strong);
	border-radius: var(--kof-radius-sm);
	background: #fff;
	color: var(--kof-text);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
	min-height: 44px; /* wygodny cel dotykowy na telefonie */
}

.kof-input::placeholder {
	color: #94a3b8;
}

.kof-input:hover {
	border-color: #94a3b8;
}

.kof-input:focus,
.kof-select:focus {
	outline: none;
	border-color: var(--kof-accent);
	box-shadow: 0 0 0 3.5px rgba(37, 99, 235, 0.15);
}

.kof-input.kof-invalid {
	border-color: var(--kof-error);
	background: var(--kof-error-bg);
}

.kof-input.kof-invalid:focus {
	box-shadow: 0 0 0 3.5px rgba(220, 38, 38, 0.15);
}

/* ---------- Wiersze dynamiczne (np. zajęcia w pensum łączonym) ---------- */

.kof-rows {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
	margin-bottom: 1rem;
}

.kof-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 0.65rem;
	padding: 1rem;
	background: var(--kof-bg-muted);
	border: 1px solid var(--kof-border);
	border-radius: var(--kof-radius-md);
	position: relative;
}

.kof-row-remove {
	justify-self: end;
	width: 2.25rem;
	height: 2.25rem;
	min-height: 0;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	line-height: 1;
	border: 1.5px solid var(--kof-border-strong);
	background: #fff;
	color: var(--kof-text-muted);
	border-radius: var(--kof-radius-sm);
	cursor: pointer;
	font-size: 1.2rem;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.kof-row-remove:hover {
	background: var(--kof-error-bg);
	border-color: var(--kof-error-border);
	color: var(--kof-error);
}

/* ---------- Przyciski ---------- */

.kof-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.4rem;
	width: 100%;
	min-height: 46px;
	padding: 0.7rem 1.2rem;
	font-size: 0.95rem;
	font-family: inherit;
	font-weight: 600;
	border-radius: var(--kof-radius-sm);
	border: 1.5px solid transparent;
	cursor: pointer;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.kof-btn-secondary {
	background: #fff;
	border-color: var(--kof-accent);
	color: var(--kof-accent);
}

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

.kof-btn-primary {
	background: var(--kof-accent);
	border-color: var(--kof-accent);
	color: #fff;
}

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

@media (min-width: 480px) {
	.kof-btn {
		width: auto;
	}
}

/* ---------- Sekcja wyniku – najważniejszy element wizualny ---------- */

.kof-result {
	margin-top: 1.5rem;
	min-height: 1px;
}

.kof-result:empty {
	margin-top: 0;
}

.kof-result-box {
	padding: 1.15rem 1.3rem;
	border-radius: var(--kof-radius-md);
	border: 1.5px solid var(--kof-success-border);
	border-left-width: 5px;
	background: var(--kof-success-bg);
	animation: kof-fade-in 0.15s ease;
}

.kof-result-box.kof-result-error {
	border-color: var(--kof-error-border);
	border-left-color: var(--kof-error);
	background: var(--kof-error-bg);
	color: #7f1d1d;
}

.kof-result-row {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 1rem;
	padding: 0.4rem 0;
	flex-wrap: wrap;
}

.kof-result-row + .kof-result-row {
	border-top: 1px dashed rgba(15, 23, 42, 0.08);
}

.kof-result-label {
	color: var(--kof-text-muted);
	font-size: 0.9rem;
}

.kof-result-value {
	font-weight: 700;
	text-align: right;
	font-variant-numeric: tabular-nums;
}

.kof-result-value.kof-result-main {
	font-size: clamp(1.4rem, 5vw, 1.75rem);
	color: var(--kof-success-dark);
}

.kof-result-subline {
	margin: -0.15rem 0 0.6rem;
	padding-bottom: 0.5rem;
	border-bottom: 1px dashed rgba(15, 23, 42, 0.08);
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--kof-success-dark);
}

.kof-result-error .kof-result-subline {
	color: var(--kof-error);
	border-bottom-color: rgba(127, 29, 29, 0.15);
}

.kof-result-error .kof-result-value.kof-result-main {
	color: var(--kof-error);
}

@keyframes kof-fade-in {
	from {
		opacity: 0;
		transform: translateY(-2px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* ---------- Notatki i komunikaty pomocnicze ---------- */

.kof-note {
	margin-top: 1rem;
	font-size: 0.8rem;
	line-height: 1.5;
	color: var(--kof-text-muted);
}

.kof-disabled-notice {
	text-align: center;
	border: 1.5px dashed var(--kof-border-strong);
	background: var(--kof-bg-muted);
	color: var(--kof-text-muted);
	box-shadow: none;
}

.kof-disabled-notice p {
	margin: 0;
}

.kof-disabled-notice a {
	color: var(--kof-accent);
	font-weight: 600;
	text-decoration: none;
}

.kof-disabled-notice a:hover {
	text-decoration: underline;
}

/* ---------- Responsywność ---------- */

@media (min-width: 640px) {
	.kof-row {
		grid-template-columns: 1fr 1fr auto;
		align-items: end;
	}
}

@media (max-width: 380px) {
	.kof-calculator {
		border-radius: var(--kof-radius-md);
		margin: 1em auto;
	}

	.kof-result-value {
		text-align: left;
	}

	.kof-result-row {
		flex-direction: column;
		gap: 0.15rem;
	}
}

/* Zmniejszamy ruch dla osób preferujących ograniczone animacje. */
@media (prefers-reduced-motion: reduce) {
	.kof-result-box {
		animation: none;
	}
}