/* styles.css — 로딩 스피너 + 결과 모달 (모노크롬·모던) */

:root {
  /* zinc 계열 무채색 팔레트 */
  --zinc-50: #fafafa;
  --zinc-100: #f4f4f5;
  --zinc-200: #e4e4e7;
  --zinc-300: #d4d4d8;
  --zinc-400: #a1a1aa;
  --zinc-500: #71717a;
  --zinc-600: #52525b;
  --zinc-700: #3f3f46;
  --zinc-800: #27272a;
  --zinc-900: #18181b;

  --color-text: var(--zinc-900);
  --color-text-sub: var(--zinc-500);
  --color-bg: var(--zinc-50);
  --color-card: #ffffff;
  --color-border: var(--zinc-200);

  --radius: 12px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --font: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Pretendard',
    'Malgun Gothic', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ── 배경(로딩) ───────────────────────────── */
.page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 2.5px solid var(--zinc-200);
  border-top-color: var(--zinc-800);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-text {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-sub);
}

.loading.is-hidden {
  display: none;
}

/* ── 결과 모달 ───────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(9, 9, 11, 0.5);
  backdrop-filter: blur(2px);
  animation: fade-in 0.15s ease-out;
}

.modal-overlay[hidden] {
  display: none;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal {
  width: 100%;
  max-width: 380px;
  padding: 28px 24px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  animation: pop-in 0.18s ease-out;
}

@keyframes pop-in {
  from {
    transform: translateY(6px) scale(0.99);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.modal-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--color-text);
}

.modal-message {
  margin: 0 0 22px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--color-text-sub);
  white-space: pre-line;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.btn {
  flex: 1;
  min-width: 96px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

/* 무채색 톤에 맞춘 회색 포커스 링 (브라우저 기본 파란 링 대체) */
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--zinc-400);
}

/* 주 버튼: 쨍한 파랑 대신 거의 검정(zinc-900) 솔리드 */
.btn-primary {
  background: var(--zinc-900);
  color: #fff;
}
.btn-primary:hover {
  background: var(--zinc-700);
}

/* 보조 버튼: 흰 배경 + 가는 테두리 (outline 스타일) */
.btn-secondary {
  background: #fff;
  color: var(--zinc-800);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--zinc-50);
  border-color: var(--zinc-300);
}