:root {
	--tc-primary: #635bff;
	--tc-primary-dark: #5148e5;
	--tc-text: #16181d;
	--tc-muted: #6b7280;
	--tc-border: #e6e8ee;
	--tc-bg: #f6f7fb;
	--tc-card: #ffffff;
	--tc-success: #087443;
	--tc-radius: 20px;
	--tc-shadow: 0 18px 55px rgba(22, 24, 29, .08);
}

.tc-calculator {
	box-sizing: border-box;
	width: 100%;
	max-width: 1100px;
	margin: 24px auto;
	padding: 8px;
	color: var(--tc-text);
	font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.tc-shell {
	display: grid;
	grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
	overflow: hidden;
	background: var(--tc-card);
	border: 1px solid var(--tc-border);
	border-radius: var(--tc-radius);
	box-shadow: var(--tc-shadow);
}

.tc-panel { padding: 40px; min-width: 0; }
.tc-input-panel { background: #fff; }
.tc-results-panel { background: linear-gradient(145deg, #fbfbff 0%, #f3f2ff 100%); border-left: 1px solid var(--tc-border); }

.tc-heading { margin-bottom: 30px; }
.tc-eyebrow {
	display: inline-block;
	margin-bottom: 8px;
	font-size: 12px;
	font-weight: 750;
	letter-spacing: .08em;
	text-transform: uppercase;
	color: var(--tc-primary);
}
.tc-heading h2, .tc-results-top h2 {
	margin: 0;
	font-size: clamp(26px, 3vw, 34px);
	line-height: 1.12;
	letter-spacing: -.035em;
}
.tc-heading p { margin: 10px 0 0; color: var(--tc-muted); font-size: 15px; }

.tc-form { display: grid; gap: 24px; }
.tc-field { min-width: 0; }
.tc-label-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tc-label { display: block; margin-bottom: 9px; font-size: 14px; font-weight: 700; }
.tc-help { margin-top: 7px; color: var(--tc-muted); font-size: 12px; line-height: 1.5; }
.tc-error { min-height: 0; margin-top: 5px; color: #b42318; font-size: 12px; }

.tc-input {
	width: 100%;
	height: 48px;
	padding: 0 14px;
	border: 1px solid var(--tc-border);
	border-radius: 12px;
	background: #fff;
	color: var(--tc-text);
	font: inherit;
	font-size: 15px;
	outline: none;
	transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.tc-input:hover { border-color: #cdd1da; }
.tc-input:focus {
	border-color: var(--tc-primary);
	box-shadow: 0 0 0 3px rgba(99, 91, 255, .13);
}
.tc-money-input { position: relative; }
.tc-money-input .tc-input { padding-left: 37px; font-size: 18px; font-weight: 700; }
.tc-currency-symbol {
	position: absolute;
	left: 14px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 18px;
	font-weight: 700;
	color: var(--tc-muted);
	z-index: 1;
}
.tc-input-suffix { position: relative; }
.tc-input-suffix .tc-input { padding-right: 44px; }
.tc-suffix {
	position: absolute;
	right: 14px;
	top: 50%;
	transform: translateY(-50%);
	color: var(--tc-muted);
	font-size: 14px;
	pointer-events: none;
}

.tc-segmented {
	display: inline-flex;
	padding: 3px;
	border: 1px solid var(--tc-border);
	border-radius: 9px;
	background: #f8f9fb;
}
.tc-segment {
	min-height: 30px;
	padding: 0 10px;
	border: 0;
	border-radius: 7px;
	background: transparent;
	color: var(--tc-muted);
	font: inherit;
	font-size: 11px;
	font-weight: 700;
	cursor: pointer;
}
.tc-segment.is-active { background: #fff; color: var(--tc-text); box-shadow: 0 1px 4px rgba(0,0,0,.07); }

.tc-tip-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 8px; }
.tc-tip-button {
	min-height: 46px;
	border: 1px solid var(--tc-border);
	border-radius: 11px;
	background: #fff;
	color: #30343b;
	font: inherit;
	font-size: 13px;
	font-weight: 700;
	cursor: pointer;
	transition: transform .16s ease, border-color .16s ease, background .16s ease, color .16s ease;
}
.tc-tip-button:hover { border-color: #bfc3cf; transform: translateY(-1px); }
.tc-tip-button.is-active {
	border-color: var(--tc-primary);
	background: rgba(99,91,255,.08);
	color: var(--tc-primary-dark);
	box-shadow: inset 0 0 0 1px var(--tc-primary);
}
.tc-custom-tip { display: grid; grid-template-columns: 1fr 130px; align-items: center; gap: 12px; margin-top: 10px; font-size: 13px; font-weight: 650; }
.tc-custom-tip .tc-input { height: 44px; }

.tc-toggle-group { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tc-toggle-option { position: relative; cursor: pointer; }
.tc-toggle-option input { position: absolute; opacity: 0; pointer-events: none; }
.tc-toggle-option span {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 46px;
	padding: 10px;
	border: 1px solid var(--tc-border);
	border-radius: 11px;
	background: #fff;
	color: #30343b;
	font-size: 13px;
	font-weight: 700;
	text-align: center;
	transition: all .16s ease;
}
.tc-toggle-option input:checked + span {
	border-color: var(--tc-primary);
	background: rgba(99,91,255,.08);
	color: var(--tc-primary-dark);
	box-shadow: inset 0 0 0 1px var(--tc-primary);
}
.tc-toggle-option input:focus-visible + span { outline: 3px solid rgba(99,91,255,.2); outline-offset: 2px; }

.tc-stepper {
	display: grid;
	grid-template-columns: 48px minmax(0,1fr) 48px;
	align-items: center;
	gap: 8px;
}
.tc-stepper-button {
	height: 48px;
	border: 1px solid var(--tc-border);
	border-radius: 12px;
	background: #fff;
	color: var(--tc-text);
	font-size: 22px;
	line-height: 1;
	cursor: pointer;
}
.tc-stepper-button:hover { background: #f8f9fb; border-color: #cdd1da; }
.tc-people-input { text-align: center; font-weight: 700; }

.tc-check { display: flex; align-items: center; gap: 10px; min-height: 44px; cursor: pointer; color: #30343b; font-size: 13px; font-weight: 650; }
.tc-check input { position: absolute; opacity: 0; pointer-events: none; }
.tc-checkmark {
	width: 21px;
	height: 21px;
	flex: 0 0 21px;
	border: 1px solid #cfd3dc;
	border-radius: 6px;
	background: #fff;
	position: relative;
	transition: all .16s ease;
}
.tc-check input:checked + .tc-checkmark { background: var(--tc-primary); border-color: var(--tc-primary); }
.tc-check input:checked + .tc-checkmark::after {
	content: "";
	position: absolute;
	left: 6px; top: 2px;
	width: 6px; height: 11px;
	border: solid #fff;
	border-width: 0 2px 2px 0;
	transform: rotate(45deg);
}
.tc-check input:focus-visible + .tc-checkmark { outline: 3px solid rgba(99,91,255,.2); outline-offset: 2px; }

.tc-results-top { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.tc-results-top h2 { font-size: 25px; }
.tc-status {
	padding: 6px 9px;
	border: 1px solid rgba(99,91,255,.16);
	border-radius: 999px;
	background: rgba(99,91,255,.07);
	color: var(--tc-primary-dark);
	font-size: 11px;
	font-weight: 750;
}

.tc-highlight {
	margin: 28px 0 22px;
	padding: 22px;
	border: 1px solid rgba(99,91,255,.13);
	border-radius: 16px;
	background: rgba(255,255,255,.78);
}
.tc-highlight span, .tc-per-person span { display: block; color: var(--tc-muted); font-size: 13px; font-weight: 650; }
.tc-highlight strong {
	display: block;
	margin-top: 4px;
	font-size: clamp(32px, 5vw, 44px);
	line-height: 1;
	letter-spacing: -.045em;
}

.tc-summary { padding: 0 2px; }
.tc-summary-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 10px 0; font-size: 14px; }
.tc-summary-row span { color: var(--tc-muted); }
.tc-summary-row strong { font-size: 14px; }
.tc-summary-divider { height: 1px; background: var(--tc-border); margin: 6px 0; }
.tc-total-row span, .tc-total-row strong { color: var(--tc-text); font-size: 16px; font-weight: 800; }

.tc-per-person {
	margin-top: 22px;
	padding: 22px;
	border-radius: 16px;
	background: var(--tc-text);
	color: #fff;
}
.tc-per-person span { color: rgba(255,255,255,.66); }
.tc-per-person strong { display: block; margin: 4px 0 4px; font-size: clamp(38px, 5vw, 52px); line-height: 1; letter-spacing: -.05em; }
.tc-per-person small { color: rgba(255,255,255,.65); font-size: 12px; }

.tc-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.tc-button {
	min-height: 46px;
	padding: 0 16px;
	border-radius: 11px;
	font: inherit;
	font-size: 13px;
	font-weight: 750;
	cursor: pointer;
	transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.tc-button:hover { transform: translateY(-1px); }
.tc-button:focus-visible, .tc-segment:focus-visible, .tc-tip-button:focus-visible, .tc-stepper-button:focus-visible { outline: 3px solid rgba(99,91,255,.2); outline-offset: 2px; }
.tc-button-primary { border: 1px solid var(--tc-primary); background: var(--tc-primary); color: #fff; }
.tc-button-primary:hover { background: var(--tc-primary-dark); box-shadow: 0 8px 20px rgba(99,91,255,.2); }
.tc-button-secondary { border: 1px solid var(--tc-border); background: #fff; color: var(--tc-text); }
.tc-button-icon { display: inline-block; margin-right: 4px; }
.tc-copy-message { min-height: 20px; margin-top: 8px; text-align: center; color: var(--tc-success); font-size: 12px; font-weight: 700; }

@media (max-width: 820px) {
	.tc-shell { grid-template-columns: 1fr; }
	.tc-results-panel { border-left: 0; border-top: 1px solid var(--tc-border); }
	.tc-panel { padding: 30px; }
}

@media (max-width: 520px) {
	.tc-calculator { margin: 8px auto; padding: 0; }
	.tc-shell { border-radius: 16px; }
	.tc-panel { padding: 22px 18px; }
	.tc-tip-grid { grid-template-columns: repeat(3, 1fr); }
	.tc-tip-button:last-child { grid-column: span 1; }
	.tc-custom-tip { grid-template-columns: 1fr 120px; }
	.tc-actions { grid-template-columns: 1fr; }
	.tc-results-top { align-items: center; }
}

@media (max-width: 340px) {
	.tc-panel { padding: 18px 14px; }
	.tc-tip-grid { grid-template-columns: repeat(2, 1fr); }
	.tc-custom-tip { grid-template-columns: 1fr; }
	.tc-toggle-group { grid-template-columns: 1fr; }
	.tc-results-top h2 { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
	.tc-calculator * { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}