/* 캘빡 사이트 공용 스타일
   색은 모두 :root 토큰에서 가져와요. 다크 모드는 기기 설정을 따라요.
   바이올렛 #6B4EFF가 주인공, 노랑 #FFCE3A는 날짜 표시처럼 꼭 필요한 곳에만 써요. */

:root {
  --bg: #FAF8FF;
  --card: #FFFFFF;
  --surface: #F1EDFF;
  --ink: #1D1640;
  --ink-2: rgba(29, 22, 64, .74);
  --ink-3: rgba(29, 22, 64, .64);
  --line: rgba(29, 22, 64, .10);
  --violet: #6B4EFF;            /* 버튼, 번호, 테두리 같은 면 */
  --violet-text: #5A3DF0;       /* 작은 글씨 링크는 대비를 위해 한 톤 깊게 */
  --violet-soft: rgba(107, 78, 255, .10);
  --yellow: #FFCE3A;
  --mark: rgba(255, 206, 58, .62);
  --pop-stop: 60%;              /* 형광펜이 글자 아래쪽 어디부터 칠해지는지 */
  --mark-stop: 52%;
  --nav-bg: rgba(250, 248, 255, .80);
  --foot-bg: #1D1640;
  --foot-ink: rgba(243, 240, 255, .74);
  --aura1: rgba(107, 78, 255, .15);
  --aura2: rgba(255, 206, 58, .16);
  --aura3: rgba(157, 139, 255, .13);
  --shadow: 0 10px 30px -14px rgba(29, 22, 64, .20);
  --shadow-lg: 0 26px 60px -24px rgba(29, 22, 64, .34);
  --r-card: 22px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #110D24;
    --card: #1A1534;
    --surface: #231D47;
    --ink: #F3F0FF;
    --ink-2: rgba(243, 240, 255, .78);
    --ink-3: rgba(243, 240, 255, .64);
    --line: rgba(243, 240, 255, .12);
    --violet-text: #A898FF;
    --violet-soft: rgba(140, 118, 255, .18);
    --mark: rgba(255, 206, 58, .88);  /* 어두운 바탕에서는 면 대신 또렷한 밑줄로 */
    --pop-stop: 86%;
    --mark-stop: 88%;
    --nav-bg: rgba(17, 13, 36, .80);
    --foot-bg: #0A0719;
    --aura1: rgba(107, 78, 255, .22);
    --aura2: rgba(255, 206, 58, .07);
    --aura3: rgba(157, 139, 255, .10);
    --shadow: 0 10px 30px -14px rgba(0, 0, 0, .60);
    --shadow-lg: 0 26px 60px -24px rgba(0, 0, 0, .75);
  }
}

/* 기본 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
  overflow-x: hidden;
}
/* 한국어는 어절 중간이 아니라 띄어쓰기에서만 줄을 바꿔요 */
html[lang="ko"] body { word-break: keep-all; }
h1, h2, h3 { line-height: 1.3; text-wrap: balance; }
p, li, summary { text-wrap: pretty; }
a { color: var(--violet-text); }
img { display: block; max-width: 100%; }
:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
kbd {
  font-family: inherit; font-size: .86em; font-weight: 700; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 6px; padding: 1px 6px; white-space: nowrap;
}

/* 은은한 배경 빛 */
.aura { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(72px); }
.blob.a { width: 560px; height: 560px; top: -220px; left: -180px; background: var(--aura1); animation: drift1 28s ease-in-out infinite; }
.blob.b { width: 420px; height: 420px; top: 60px; right: -170px; background: var(--aura2); animation: drift2 32s ease-in-out infinite; }
.blob.c { width: 440px; height: 440px; top: 62vh; left: 28%; background: var(--aura3); animation: drift3 36s ease-in-out infinite; }
@keyframes drift1 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(40px, 50px) scale(1.06); } }
@keyframes drift2 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-50px, 40px) scale(1.05); } }
@keyframes drift3 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, -50px) scale(1.08); } }

/* 상단 내비 */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: var(--nav-bg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { max-width: 1040px; margin: 0 auto; padding: 12px 24px; display: flex; align-items: center; gap: 18px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 17px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.logo img { width: 28px; height: 28px; border-radius: 8px; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.nav-links a { color: var(--ink-2); text-decoration: none; font-size: 14px; font-weight: 600; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--violet-text); }
.nav-links a.lang {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--card);
  color: var(--ink); font-size: 13px; font-weight: 700;
}
.nav-links a.lang:hover { color: var(--violet-text); }
.lang svg { width: 15px; height: 15px; flex: none; }

/* 버튼 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 14px; font-weight: 700; font-size: 15px;
  text-decoration: none; border: 1px solid transparent; transition: transform .18s, box-shadow .18s;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--violet); color: #fff; box-shadow: 0 12px 28px -12px rgba(107, 78, 255, .75); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 16px 32px -12px rgba(107, 78, 255, .85); }
.btn-ghost { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--violet); }

/* 히어로 */
.hero { padding: 76px 0 72px; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
  color: var(--violet-text); background: var(--card); border: 1px solid var(--line);
  padding: 6px 13px; border-radius: 999px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--yellow); box-shadow: 0 0 0 3px rgba(255, 206, 58, .28); }
.hero h1 { font-size: clamp(38px, 5.6vw, 58px); font-weight: 800; letter-spacing: -.035em; line-height: 1.2; margin-top: 18px; }
.pop { color: var(--violet-text); background: linear-gradient(transparent var(--pop-stop), var(--mark) var(--pop-stop)); padding: 0 .08em; }
.hero .sub { font-size: 18px; color: var(--ink-2); margin-top: 18px; max-width: 31em; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-meta { margin-top: 16px; font-size: 14px; color: var(--ink-3); }

/* 히어로 그림: 복사한 공지에서 찾은 일정 */
.demo { display: grid; }
.demo .card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-lg); }
.copied { padding: 18px 20px 20px; margin-right: 44px; transform: rotate(-1.4deg); font-size: 14px; color: var(--ink-2); }
.tag { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--ink-3); }
.tag svg { width: 14px; height: 14px; }
.copied .title { font-weight: 800; color: var(--ink); margin: 8px 0 4px; font-size: 15px; }
.copied p { margin-top: 3px; }
.copied mark { color: inherit; background: linear-gradient(transparent var(--mark-stop), var(--mark) var(--mark-stop)); padding: 0 2px; }
.flow {
  justify-self: center; position: relative; z-index: 1; margin: -16px 0;
  width: 40px; height: 40px; border-radius: 50%; background: var(--violet); color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 22px -8px rgba(107, 78, 255, .8);
}
.flow svg { width: 20px; height: 20px; }
.events { margin-left: 44px; padding: 8px; }
.ev { display: flex; gap: 12px; align-items: flex-start; padding: 12px; }
.ev + .ev { border-top: 1px solid var(--line); }
.ev .bar { flex: none; width: 4px; align-self: stretch; border-radius: 4px; background: var(--violet); }
.ev b { display: block; font-size: 15px; color: var(--ink); }
.ev small { display: block; font-size: 13px; color: var(--ink-2); line-height: 1.55; }
.ev .ok { flex: none; margin-left: auto; width: 22px; height: 22px; border-radius: 50%; background: var(--violet); color: #fff; display: flex; align-items: center; justify-content: center; }
.ev .ok svg { width: 13px; height: 13px; }
.ev-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 12px 8px; border-top: 1px solid var(--line); }
.ev-foot .cal { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.ev-foot .cal i { width: 10px; height: 10px; border-radius: 50%; background: var(--violet); }
.ev-foot .add { background: var(--violet); color: #fff; font-weight: 700; font-size: 13px; padding: 8px 14px; border-radius: 10px; white-space: nowrap; }

/* 섹션 공통 */
section { padding: 72px 0; scroll-margin-top: 64px; }
.sec-head { max-width: 36em; }
.kicker { font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--violet-text); }
.sec-head h2 { font-size: clamp(26px, 3.6vw, 34px); font-weight: 800; letter-spacing: -.025em; margin-top: 8px; }
.sec-head p { color: var(--ink-2); margin-top: 10px; font-size: 16px; }

/* 쓰는 법 */
.how-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.how-card { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 28px; box-shadow: var(--shadow); }
.how-card .head { display: flex; align-items: center; gap: 12px; }
.ico { flex: none; width: 44px; height: 44px; border-radius: 13px; background: var(--violet-soft); color: var(--violet-text); display: flex; align-items: center; justify-content: center; }
.ico svg { width: 24px; height: 24px; }
.how-card h3 { font-size: 20px; font-weight: 800; letter-spacing: -.01em; }
.steps { list-style: none; counter-reset: step; margin-top: 20px; display: grid; gap: 14px; }
.steps li { counter-increment: step; position: relative; padding-left: 40px; color: var(--ink-2); font-size: 15px; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 26px; height: 26px; border-radius: 50%; background: var(--violet); color: #fff;
  font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.steps b { color: var(--ink); }
.tip { margin-top: 20px; padding: 12px 14px; border-radius: 12px; background: var(--surface); font-size: 14px; color: var(--ink-2); }

/* 기능 */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card); padding: 26px; box-shadow: var(--shadow); }
.feature h3 { font-size: 17px; font-weight: 800; margin-top: 16px; }
.feature p { font-size: 14.5px; color: var(--ink-2); margin-top: 6px; }

/* 기기 안 약속 */
.promise {
  margin-top: 20px; border-radius: 26px; padding: 34px 36px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--card) 100%); border: 1px solid var(--line);
}
.promise h3 { font-size: 22px; font-weight: 800; letter-spacing: -.02em; }
.promise p { color: var(--ink-2); margin-top: 10px; max-width: 44em; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chips li { font-size: 13px; font-weight: 700; color: var(--ink-2); background: var(--card); border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; }
.more { display: inline-block; margin-top: 18px; font-weight: 700; font-size: 15px; text-decoration: none; }
.more:hover { text-decoration: underline; }

/* 가격 */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px; box-shadow: var(--shadow); }
.plan.free { border-color: rgba(255, 206, 58, .9); }
.badge { display: inline-block; font-size: 12px; font-weight: 800; color: #1D1640; background: var(--yellow); padding: 2px 10px; border-radius: 999px; margin-bottom: 8px; }
.plan .name { font-weight: 700; font-size: 15px; color: var(--ink-2); }
.plan .price { font-size: 30px; font-weight: 800; letter-spacing: -.02em; margin-top: 4px; white-space: nowrap; }
.plan .per { font-size: 14px; font-weight: 600; color: var(--ink-3); margin-left: 4px; letter-spacing: 0; }
.plan .note { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
.price-foot { margin-top: 20px; font-size: 14px; color: var(--ink-2); max-width: 52em; }

/* 자주 묻는 질문 */
.faq { margin-top: 28px; display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.faq summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; font-weight: 700; font-size: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 9px; height: 9px; margin-top: -4px;
  border-right: 2px solid var(--violet-text); border-bottom: 2px solid var(--violet-text);
  transform: rotate(45deg); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: 4px; }
.faq .answer { padding: 0 22px 20px; color: var(--ink-2); font-size: 15px; }
.faq .answer p + p { margin-top: 8px; }
.faq .answer b { color: var(--ink); }

/* 문의 */
.contact-card {
  margin-top: 28px; background: var(--card); border: 1px solid var(--line); border-radius: 24px;
  padding: 28px 30px; box-shadow: var(--shadow); display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px;
}
.contact-card .mail { font-weight: 700; font-size: 17px; color: var(--ink); user-select: all; }
.contact-card .hint { flex-basis: 100%; font-size: 14px; color: var(--ink-3); }

/* 푸터 */
.site-foot { background: var(--foot-bg); color: var(--foot-ink); padding: 34px 0 44px; font-size: 14px; margin-top: 32px; }
.foot-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; }
.site-foot a { color: var(--foot-ink); text-decoration: none; font-weight: 600; }
.site-foot a:hover { color: #FFFFFF; }
.f-brand { display: flex; align-items: center; gap: 8px; color: #F3F0FF; font-weight: 800; }
.f-brand img { width: 24px; height: 24px; border-radius: 7px; }
.site-foot a.contact-btn {
  display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 10px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16); color: #F3F0FF;
}
.contact-btn svg { width: 16px; height: 16px; }
.f-copy { margin-left: auto; }

/* 약관과 방침 문서 */
.doc { max-width: 720px; margin: 0 auto; padding: 48px 24px 64px; }
.doc h1 { font-size: 32px; font-weight: 800; letter-spacing: -.025em; }
.doc .date { color: var(--ink-3); font-size: 14px; margin-top: 4px; }
.doc .box {
  margin-top: 24px; background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--violet);
  border-radius: 14px; padding: 18px 20px; font-weight: 600; color: var(--ink);
}
.doc .lead { margin-top: 20px; }
.doc h2 { font-size: 19px; font-weight: 800; margin-top: 38px; letter-spacing: -.01em; }
.doc h2 .n { color: var(--violet-text); margin-right: 4px; }
.doc h3 { font-size: 16px; font-weight: 800; margin-top: 20px; }
.doc p, .doc li { font-size: 15.5px; color: var(--ink-2); margin-top: 8px; }
.doc ul { padding-left: 20px; }
.doc li::marker { color: var(--violet-text); }
.doc strong, .doc b { color: var(--ink); }
.doc a { overflow-wrap: anywhere; }
.doc .mail-row { margin-top: 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.doc .mail-row .mail { font-weight: 700; color: var(--ink); user-select: all; }

@media (max-width: 900px) {
  .plans { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .hero { padding-top: 52px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .features { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .how-grid { grid-template-columns: 1fr; }
  .nav-links a:not(.lang) { display: none; }
  .f-copy { margin-left: 0; flex-basis: 100%; }
}
@media (max-width: 520px) {
  .wrap, .nav-inner { padding-left: 16px; padding-right: 16px; }
  .doc { padding-left: 16px; padding-right: 16px; }
  section { padding: 56px 0; }
  .plans { grid-template-columns: 1fr; }
  .how-card, .promise, .contact-card { padding: 22px 20px; }
  .copied { margin-right: 14px; }
  .events { margin-left: 14px; }
  .hero .sub { font-size: 17px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob { animation: none; }
  .btn { transition: none; }
}