/* ============================================================================
 * ttranking.com 랜딩 — 스타일 (무빌드·무의존, 모바일 우선)
 * 색·간격은 :root 변수로 토큰화. 외부 폰트/CDN 없음(시스템 폰트).
 * ==========================================================================*/
:root {
  --navy: #0F1E3D;
  --navy-2: #16264A;
  --primary: #2F6BFF;
  --primary-dark: #1B4FC4;
  --accent: #FF6B35;      /* 활력(번개·즐거움) */
  --green: #12A150;
  --bg: #ffffff;
  --bg-soft: #F5F7FB;
  --text: #17181C;
  --sub: #5A6472;
  --muted: #8A8F98;
  --line: #E5E9F0;
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 960px;
  --pad: 20px;
  --shadow: 0 6px 24px rgba(15, 30, 61, 0.08);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "Apple SD Gothic Neo", "Malgun Gothic", "맑은 고딕", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 0.4em; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.center { text-align: center; }
.hidden { display: none !important; }

/* 스킵 링크(접근성) */
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; border-radius: 8px; z-index: 100; }

/* ── 상단 바 ── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,0.9); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 800; font-size: 18px; color: var(--navy); letter-spacing: -0.02em; }
.brand .dot { color: var(--accent); }
.topbar .lang { font-size: 13px; color: var(--sub); }

/* ── 히어로 ── */
.hero {
  background: radial-gradient(1200px 500px at 50% -10%, #1E3A6E 0%, var(--navy) 55%, var(--navy-2) 100%);
  color: #fff; text-align: center;
  padding: 64px var(--pad) 72px;
}
.hero .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.06em;
  color: #Bcd0ff; background: rgba(47,107,255,0.18);
  border: 1px solid rgba(120,160,255,0.35);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(28px, 7vw, 52px); font-weight: 800; margin-bottom: 16px; }
.hero .slogan { font-size: clamp(18px, 4.5vw, 26px); color: #DCE6FF; font-weight: 600; }
.hero .lead { max-width: 640px; margin: 18px auto 0; color: #B9C6E4; font-size: clamp(15px, 3.6vw, 18px); }
.hero .paddle { font-size: 40px; margin-bottom: 8px; }

/* ── 버튼 ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 22px; border-radius: 999px;
  font-size: 16px; font-weight: 700; cursor: pointer; border: 2px solid transparent;
  transition: transform 0.06s ease, box-shadow 0.2s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-block { display: flex; width: 100%; }

/* ── 섹션 공통 ── */
section { padding: 56px 0; }
.section-title { font-size: clamp(22px, 5vw, 32px); font-weight: 800; text-align: center; margin-bottom: 8px; }
.section-sub { text-align: center; color: var(--sub); max-width: 620px; margin: 0 auto 36px; }

/* ── 4기둥 카드 그리드 ── */
.pillars { background: var(--bg-soft); }
.grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.card .emoji { font-size: 32px; }
.card h3 { font-size: 19px; margin: 12px 0 6px; }
.card p { color: var(--sub); font-size: 15px; margin: 0; }

/* ── 티저 감성 라인 ── */
.teaser-lines { display: grid; gap: 14px; max-width: 640px; margin: 0 auto; }
.teaser-lines .line {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 18px; font-size: clamp(15px, 3.8vw, 18px); color: var(--text);
  box-shadow: var(--shadow);
}

/* ── 사전 알림 폼 ── */
.signup { background: var(--navy); color: #fff; }
.signup .section-title { color: #fff; }
.signup .section-sub { color: #B9C6E4; }
.signup-form { max-width: 460px; margin: 0 auto; }
.signup-row { display: flex; gap: 10px; flex-wrap: wrap; }
.signup-form input[type="email"] {
  flex: 1; min-width: 200px; min-height: 48px; padding: 12px 16px;
  border-radius: 999px; border: 1px solid var(--line); font-size: 16px; background: #fff; color: var(--text);
}
.signup-note { font-size: 13px; color: #93A3C7; margin-top: 12px; text-align: center; }
.form-status { margin-top: 14px; text-align: center; font-size: 15px; min-height: 22px; }
.form-status.ok { color: #7CE0A6; }
.form-status.err { color: #FFB4A2; }
.form-status.info { color: #B9C6E4; }

/* ── 스토어 버튼 ── */
.stores { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 10px 22px;
  border-radius: 12px; background: #111; color: #fff; font-weight: 700;
}
.store-btn:hover { color: #fff; background: #000; }
.store-btn .icon { font-size: 22px; }
.store-btn small { display: block; font-size: 11px; font-weight: 500; opacity: 0.8; }

/* ── 스크린샷 자리(공개 모드) ── */
.shots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 560px; margin: 0 auto; }
.shot {
  aspect-ratio: 9 / 19; background: linear-gradient(160deg, #E8EEFF, #F5F7FB);
  border: 1px dashed var(--primary); border-radius: 20px;
  display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 13px; text-align: center; padding: 10px;
}

/* ── 탁구장 랜딩(/f) ── */
.facility-hero { text-align: center; }
.facility-hero .fac-name { font-size: clamp(24px, 6vw, 38px); font-weight: 800; }
.facility-hero .fac-addr { color: var(--sub); }
.fac-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); margin-bottom: 16px; }
.fac-block h3 { font-size: 17px; margin-bottom: 10px; }
.placeholder-note { color: var(--muted); font-size: 13px; }
.fac-id { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); font-size: 12px; }
.club-chip { display: inline-block; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; margin: 4px 4px 0 0; color: var(--sub); font-size: 14px; }

/* ── 푸터 ── */
footer.site {
  background: var(--navy-2); color: #B9C6E4; padding: 36px var(--pad); text-align: center; font-size: 14px;
}
footer.site a { color: #DCE6FF; }
footer.site .foot-brand { color: #fff; font-weight: 800; font-size: 16px; margin-bottom: 8px; }
footer.site .foot-links { margin: 10px 0; }
footer.site .foot-links a { margin: 0 8px; }
footer.site .foot-fine { color: #6E7FA8; font-size: 12px; margin-top: 12px; }

/* ── 문서(개인정보처리방침) ── */
.doc { max-width: 760px; margin: 0 auto; padding: 40px var(--pad) 64px; }
.doc h1 { font-size: 28px; }
.doc h2 { font-size: 20px; margin-top: 32px; border-top: 1px solid var(--line); padding-top: 24px; }
.doc p, .doc li { color: var(--text); }
.doc ul { padding-left: 20px; }
.doc .updated { color: var(--muted); font-size: 14px; }
.doc .note { background: var(--bg-soft); border-left: 3px solid var(--primary); padding: 12px 16px; border-radius: 8px; color: var(--sub); font-size: 14px; }

/* ── 반응형 (태블릿+) ── */
@media (min-width: 720px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 88px var(--pad) 96px; }
}
@media (min-width: 960px) {
  .grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
}