/*
 * Calibration Master — style.css
 * 디자인 컨셉: 공장 품질검사실의 계기판(HUD) + 제도(製圖) 도면 느낌.
 * 팔레트: 그래파이트 블랙 / 청사진 블루 / 캘리브레이션 오렌지 / LCD 그린 / 브러시드 스틸
 * 서명 요소: 모든 패널 테두리를 감싸는 "눈금자(ticks)" 프레임 — 버니어 캘리퍼스의 눈금을 UI 전체의 모티프로 사용.
 */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

.calib-root {
	--calib-bg: #0b0e13;
	--calib-panel: #141a22;
	--calib-panel-2: #1b232e;
	--calib-blueprint: #1c3a56;
	--calib-accent: #ff8a1f;
	--calib-accent-dim: #a85a15;
	--calib-lcd: #3dffa0;
	--calib-steel: #c9d1d9;
	--calib-steel-dim: #8993a1;
	--calib-danger: #ff5361;
	--calib-gold: #ffd166;

	--font-display: 'Oswald', sans-serif;
	--font-mono: 'IBM Plex Mono', monospace;
	--font-body: 'Inter', sans-serif;

	position: relative;
	max-width: 720px;
	margin: 0 auto;
	background: var(--calib-bg);
	background-image:
		linear-gradient(rgba(28, 58, 86, 0.35) 1px, transparent 1px),
		linear-gradient(90deg, rgba(28, 58, 86, 0.35) 1px, transparent 1px);
	background-size: 24px 24px;
	color: var(--calib-steel);
	font-family: var(--font-body);
	border-radius: 6px;
	overflow: hidden;
	box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05), 0 20px 60px rgba(0, 0, 0, 0.5);
}

.calib-root *,
.calib-root *::before,
.calib-root *::after {
	box-sizing: border-box;
}

/* ---------- 눈금자 프레임 (signature element) ---------- */
.calib-panel {
	position: relative;
	padding: 34px 28px 28px;
	background: var(--calib-panel);
	border-top: 10px solid var(--calib-panel-2);
	background-image: repeating-linear-gradient(
		90deg,
		var(--calib-steel-dim) 0,
		var(--calib-steel-dim) 1px,
		transparent 1px,
		transparent 10px
	);
	background-repeat: no-repeat;
	background-position: 0 0;
	background-size: 100% 8px;
}
.calib-panel::before {
	content: '';
	position: absolute;
	top: 8px;
	left: 0;
	right: 0;
	height: 2px;
	background: linear-gradient(90deg, transparent, var(--calib-accent-dim), transparent);
	opacity: 0.6;
}
.calib-panel::after {
	content: '';
	position: absolute;
	top: 10px;
	left: 14px;
	width: 8px;
	height: 8px;
	border-radius: 50%;
	background: radial-gradient(circle at 35% 35%, #cfd6dd, #4a525c);
}

/* ---------- 화면 전환 ---------- */
.calib-screen { display: none; }
.calib-screen.is-active { display: block; animation: calib-fade-in 0.35s ease; }
@keyframes calib-fade-in {
	from { opacity: 0; transform: translateY(6px); }
	to { opacity: 1; transform: translateY(0); }
}

/* ---------- 시작 화면 ---------- */
.calib-brand { text-align: center; margin-bottom: 18px; }
.calib-brand__eyebrow {
	font-family: var(--font-mono);
	font-size: 11px;
	letter-spacing: 3px;
	color: var(--calib-accent);
}
.calib-brand__title {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: 40px;
	line-height: 1;
	margin: 6px 0 0;
	letter-spacing: 1px;
	color: var(--calib-steel);
}
.calib-brand__title span {
	display: block;
	font-size: 22px;
	font-weight: 500;
	color: var(--calib-accent);
	letter-spacing: 6px;
}
.calib-brand__desc {
	text-align: center;
	font-size: 20px;
	color: var(--calib-steel-dim);
	width: 100%;
	margin: 14px auto 22px;
	line-height: 1.6;
}

.calib-diff-select {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px;
	margin-bottom: 20px;
}
.calib-diff-btn {
	background: var(--calib-panel-2);
	border: 1px solid rgba(255, 255, 255, 0.08);
	border-left: 4px solid var(--calib-steel-dim);
	border-radius: 4px;
	padding: 12px 14px;
	text-align: left;
	cursor: pointer;
	color: var(--calib-steel);
	transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.calib-diff-btn:hover, .calib-diff-btn:focus-visible {
	transform: translateY(-2px);
	border-left-color: var(--calib-accent);
	background: #212b38;
}
.calib-diff-btn:focus-visible { outline: 2px solid var(--calib-accent); outline-offset: 2px; }
.calib-diff-btn__name {
	display: block;
	font-family: var(--font-display);
	font-size: 15px;
	letter-spacing: 1px;
}
.calib-diff-btn__tol {
	display: block;
	font-family: var(--font-mono);
	font-size: 11px;
	color: var(--calib-steel-dim);
	margin-top: 4px;
}
.calib-diff-btn--nightmare { border-left-color: var(--calib-danger); grid-column: 1 / -1; }
.calib-diff-btn--nightmare .calib-diff-btn__name { color: var(--calib-danger); }

.calib-skin-row { margin: 6px 0 18px; }
.calib-skin-row__label {
	display: block;
	font-family: var(--font-mono);
	font-size: 11px;
	color: var(--calib-steel-dim);
	letter-spacing: 2px;
	margin-bottom: 8px;
}
.calib-skin-list { display: flex; gap: 8px; flex-wrap: wrap; }
.calib-skin-swatch {
	width: 34px; height: 34px; border-radius: 50%;
	border: 2px solid rgba(255,255,255,0.15);
	cursor: pointer;
	position: relative;
}
.calib-skin-swatch.is-selected { border-color: var(--calib-accent); box-shadow: 0 0 0 2px rgba(255,138,31,0.35); }
.calib-skin-swatch.is-locked { opacity: 0.35; cursor: not-allowed; }
.calib-skin-swatch::after {
	content: attr(data-label);
	position: absolute; bottom: -18px; left: 50%; transform: translateX(-50%);
	font-size: 9px; color: var(--calib-steel-dim); white-space: nowrap; font-family: var(--font-mono);
}

.calib-btn {
	display: inline-block;
	width: 100%;
	font-family: var(--font-display);
	font-size: 15px;
	letter-spacing: 1px;
	padding: 12px 18px;
	border-radius: 4px;
	border: none;
	background: var(--calib-accent);
	color: #14100a;
	cursor: pointer;
	transition: filter 0.15s ease, transform 0.1s ease;
}
.calib-btn:hover, .calib-btn:focus-visible { filter: brightness(1.1); }
.calib-btn:active { transform: scale(0.98); }
.calib-btn--ghost {
	background: transparent;
	border: 1px solid rgba(255, 255, 255, 0.15);
	color: var(--calib-steel);
	margin-top: 10px;
}

/* ---------- 게임 HUD ---------- */
.calib-hud {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 8px;
	margin-bottom: 10px;
}
.calib-hud__item {
	background: var(--calib-panel-2);
	border-radius: 4px;
	padding: 8px 6px;
	text-align: center;
	border-bottom: 2px solid rgba(255,255,255,0.06);
}
.calib-hud__label {
	display: block;
	font-family: var(--font-mono);
	font-size: 10px;
	color: var(--calib-steel-dim);
	letter-spacing: 1px;
}
.calib-hud__value {
	display: block;
	font-family: var(--font-mono);
	font-weight: 600;
	font-size: 20px;
	color: var(--calib-lcd);
	text-shadow: 0 0 8px rgba(61, 255, 160, 0.4);
}
[data-role="hud-time"].is-low { color: var(--calib-danger); text-shadow: 0 0 8px rgba(255,83,97,0.5); }
[data-role="hud-combo"].is-hot { color: var(--calib-accent); text-shadow: 0 0 10px rgba(255,138,31,0.6); }

.calib-hud__bar {
	height: 4px;
	background: rgba(255,255,255,0.08);
	border-radius: 2px;
	overflow: hidden;
	margin-bottom: 14px;
}
.calib-hud__bar-fill {
	height: 100%;
	width: 100%;
	background: linear-gradient(90deg, var(--calib-lcd), var(--calib-accent));
	transition: width 1s linear;
}

.calib-stage-tag {
	display: flex;
	justify-content: space-between;
	font-family: var(--font-mono);
	font-size: 11px;
	color: var(--calib-steel-dim);
	letter-spacing: 1px;
	margin-bottom: 4px;
}
.calib-instrument {
	font-family: var(--font-display);
	font-size: 20px;
	letter-spacing: 1px;
	color: var(--calib-steel);
	margin-bottom: 6px;
}

.calib-event-banner {
	display: none;
	font-family: var(--font-mono);
	font-size: 12px;
	color: var(--calib-gold);
	background: rgba(255, 209, 102, 0.08);
	border: 1px dashed rgba(255, 209, 102, 0.4);
	border-radius: 4px;
	padding: 6px 10px;
	margin-bottom: 10px;
}
.calib-event-banner.is-active { display: block; animation: calib-fade-in 0.3s ease; }

.calib-stage {
	position: relative;
	background: var(--calib-panel-2);
	border-radius: 6px;
	padding: 18px 12px;
	min-height: 220px;
	display: flex;
	align-items: center;
	justify-content: center;
	margin-bottom: 12px;
	touch-action: none;
	user-select: none;
}

.calib-target {
	text-align: center;
	font-family: var(--font-mono);
	font-size: 13px;
	color: var(--calib-steel-dim);
	margin-bottom: 10px;
}
.calib-target strong { color: var(--calib-accent); font-size: 15px; }

.calib-feedback {
	min-height: 26px;
	text-align: center;
	font-family: var(--font-display);
	font-size: 18px;
	letter-spacing: 1px;
}
.calib-feedback.is-correct { color: var(--calib-lcd); }
.calib-feedback.is-perfect { color: var(--calib-gold); }
.calib-feedback.is-wrong { color: var(--calib-danger); }

/* ---------- 계측기: 버니어 캘리퍼스 ---------- */
.calib-vernier { width: 100%; touch-action: none; }
.calib-vernier__track {
	position: relative;
	height: 70px;
	background: #0e141b;
	border-radius: 4px;
	border: 1px solid rgba(255,255,255,0.08);
	overflow: hidden;
}
.calib-vernier__ruler { position: absolute; inset: 0; }
.calib-vernier__jaw {
	position: absolute;
	top: 0;
	bottom: 0;
	width: 3px;
	background: var(--calib-accent);
	box-shadow: 0 0 8px rgba(255,138,31,0.6);
	cursor: ew-resize;
}
.calib-vernier__handle {
	position: absolute;
	top: -8px;
	width: 22px;
	height: 22px;
	margin-left: -10px;
	border-radius: 50%;
	background: var(--calib-accent);
	border: 2px solid #fff2;
	cursor: ew-resize;
}
.calib-vernier__readout {
	margin-top: 10px;
	text-align: center;
	font-family: var(--font-mono);
	font-size: 24px;
	color: var(--calib-lcd);
}
.calib-choice-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px;
	margin-top: 12px;
}
.calib-choice-btn {
	font-family: var(--font-mono);
	font-size: 15px;
	padding: 10px;
	border-radius: 4px;
	border: 1px solid rgba(255,255,255,0.1);
	background: var(--calib-panel);
	color: var(--calib-steel);
	cursor: pointer;
}
.calib-choice-btn:hover, .calib-choice-btn:focus-visible { border-color: var(--calib-accent); }

/* ---------- 계측기: 마이크로미터 ---------- */
.calib-micrometer { width: 100%; text-align: center; }
.calib-micrometer__dial {
	width: 160px; height: 160px; margin: 0 auto;
	border-radius: 50%;
	background: radial-gradient(circle at 50% 50%, #1b232e 55%, #0e141b 100%);
	border: 3px solid #2a3542;
	position: relative;
	cursor: grab;
}
.calib-micrometer__needle {
	position: absolute; left: 50%; top: 50%;
	width: 3px; height: 60px;
	background: var(--calib-accent);
	transform-origin: 50% 100%;
	transform: translate(-50%, -100%) rotate(0deg);
	box-shadow: 0 0 6px rgba(255,138,31,0.7);
}
.calib-micrometer__cap {
	position: absolute; left: 50%; top: 50%; width: 12px; height: 12px;
	border-radius: 50%; background: var(--calib-steel);
	transform: translate(-50%, -50%);
}
.calib-micrometer__readout {
	margin-top: 12px;
	font-family: var(--font-mono);
	font-size: 22px;
	color: var(--calib-lcd);
}

/* ---------- 계측기: 디지털 게이지 / 영점 ---------- */
.calib-digital { text-align: center; }
.calib-digital__lcd {
	display: inline-block;
	background: #08130d;
	border: 1px solid rgba(61,255,160,0.3);
	border-radius: 6px;
	padding: 18px 26px;
	font-family: var(--font-mono);
	font-size: 36px;
	color: var(--calib-lcd);
	text-shadow: 0 0 10px rgba(61,255,160,0.6);
	letter-spacing: 2px;
}
.calib-digital__lcd.is-flicker { animation: calib-flicker 0.15s steps(2) infinite; }
@keyframes calib-flicker { 50% { opacity: 0.35; } }

/* ---------- 계측기: 토크 게이지 ---------- */
.calib-torque { text-align: center; }
.calib-torque__gauge {
	width: 200px; height: 120px; margin: 0 auto;
	position: relative;
}
.calib-torque__needle {
	position: absolute; left: 50%; bottom: 6px;
	width: 3px; height: 90px;
	background: var(--calib-danger);
	transform-origin: 50% 100%;
	transform: translateX(-50%) rotate(-90deg);
	box-shadow: 0 0 6px rgba(255,83,97,0.7);
}
.calib-torque__pivot {
	position: absolute; left: 50%; bottom: 0; width: 14px; height: 14px;
	border-radius: 50%; background: var(--calib-steel); transform: translateX(-50%);
}
.calib-torque__readout {
	margin-top: 8px;
	font-family: var(--font-mono);
	font-size: 20px;
	color: var(--calib-lcd);
}

.calib-stop-btn {
	margin-top: 14px;
	font-family: var(--font-display);
	font-size: 17px;
	letter-spacing: 2px;
	padding: 12px 30px;
	background: var(--calib-danger);
	color: #1a0b0c;
	border: none;
	border-radius: 4px;
	cursor: pointer;
}
.calib-stop-btn:active { transform: scale(0.97); }

/* ---------- 결과 화면 ---------- */
.calib-result__title { font-family: var(--font-display); text-align: center; letter-spacing: 2px; }
.calib-result__grid {
	display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
	margin: 18px 0;
}
.calib-result__grid div {
	background: var(--calib-panel-2); border-radius: 4px; padding: 12px; text-align: center;
}
.calib-result__grid span { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--calib-steel-dim); }
.calib-result__grid strong { font-family: var(--font-mono); font-size: 24px; color: var(--calib-lcd); }

.calib-submit-form { display: flex; gap: 8px; }
.calib-submit-form input {
	flex: 1;
	background: var(--calib-panel-2);
	border: 1px solid rgba(255,255,255,0.1);
	border-radius: 4px;
	padding: 10px 12px;
	color: var(--calib-steel);
	font-family: var(--font-body);
}
.calib-submit-form button { width: auto; white-space: nowrap; }
.calib-submit-status { font-size: 12px; color: var(--calib-steel-dim); min-height: 16px; margin: 8px 0 0; }
.calib-result__actions { display: grid; gap: 8px; margin-top: 16px; }

/* ---------- 랭킹 화면 ---------- */
.calib-lb-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.calib-lb-tabs button {
	flex: 1; padding: 8px; font-family: var(--font-mono); font-size: 12px;
	background: var(--calib-panel-2); color: var(--calib-steel-dim);
	border: 1px solid rgba(255,255,255,0.08); border-radius: 4px; cursor: pointer;
}
.calib-lb-tabs button.is-active { color: var(--calib-accent); border-color: var(--calib-accent); }
.calib-lb-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13px; }
.calib-lb-table th, .calib-lb-table td { padding: 8px 6px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.06); }
.calib-lb-table th { color: var(--calib-steel-dim); font-weight: 500; font-size: 11px; }
.calib-lb-table tr:first-child td { color: var(--calib-gold); }

/* ---------- 이펙트 레이어 ---------- */
.calib-fx-layer { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 5; }
.calib-spark {
	position: absolute; width: 6px; height: 6px; border-radius: 50%;
	background: var(--calib-gold); opacity: 0.9;
	animation: calib-spark-fly 0.7s ease-out forwards;
}
@keyframes calib-spark-fly {
	to { transform: translate(var(--dx), var(--dy)) scale(0); opacity: 0; }
}
.calib-root.is-shaking { animation: calib-shake 0.35s; }
@keyframes calib-shake {
	10%, 90% { transform: translateX(-1px); }
	20%, 80% { transform: translateX(2px); }
	30%, 50%, 70% { transform: translateX(-4px); }
	40%, 60% { transform: translateX(4px); }
}

.calib-toast {
	position: absolute;
	top: 16px; left: 50%;
	transform: translate(-50%, -60px);
	background: var(--calib-panel-2);
	border: 1px solid var(--calib-gold);
	color: var(--calib-gold);
	font-family: var(--font-mono);
	font-size: 12px;
	padding: 8px 14px;
	border-radius: 4px;
	opacity: 0;
	transition: transform 0.3s ease, opacity 0.3s ease;
	z-index: 20;
	pointer-events: none;
	white-space: nowrap;
}
.calib-toast.is-visible { transform: translate(-50%, 0); opacity: 1; }

/* ---------- 접근성 ---------- */
@media (prefers-reduced-motion: reduce) {
	.calib-root, .calib-screen.is-active, .calib-spark, .calib-root.is-shaking { animation: none !important; transition: none !important; }
}
.calib-root button:focus-visible,
.calib-root input:focus-visible {
	outline: 2px solid var(--calib-accent);
	outline-offset: 2px;
}

/* ---------- 반응형 ---------- */
@media (max-width: 480px) {
	.calib-panel { padding: 28px 16px 20px; }
	.calib-brand__title { font-size: 32px; }
	.calib-hud__value { font-size: 16px; }
	.calib-digital__lcd { font-size: 26px; padding: 14px 18px; }
	.calib-micrometer__dial { width: 130px; height: 130px; }
	.calib-torque__gauge { width: 160px; height: 100px; }
}