/* ===== Base ===== */
*{
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}


:root{
  --accent: #fd8e61;
  --bg: #ffffff;
}

/* ===== Page frame ===== */
body{
  margin: 0;
  background: var(--bg);
}

.page{
  width: min(1400px, 96vw);
  margin: 24px auto;
  border: 4px solid var(--accent);
}

/* top bars */
.topbar{
  padding: 12px 16px;
  border-bottom: 3px solid var(--accent);
  color: var(--accent);
  font-size: 16px;
  letter-spacing: 0.2px;
}

/* main inside frame */
.frame{
  padding: 28px 28px 40px 28px;
  min-height: 70vh;
}

/* ===== Nav ===== */
.nav{
  display: flex;
  gap: 26px;
  margin: 12px 0 40px 0;
}

.nav-btn{
  text-decoration: none;
  color: var(--accent);
  border: 3px solid var(--accent);
  padding: 12px 22px;
  letter-spacing: 2px;
  font-family: Arial;
  font-weight: 500;
}

/* ===== Title area ===== */
.hero{
  text-align: center;
  margin: 20px 0 70px 0;
  color: var(--accent);
}

/* ===== 3 boxes row ===== */
.box-row{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin: 0 auto 60px auto;
}

/* 카드 */
.card{
  position: relative;
  border: 3px solid var(--accent);
  padding: 34px 34px;
  color: var(--accent);
  min-height: 260px;
}

.card p{
  margin: 0 0 18px 0;
  font-size: 18px;
  line-height: 1.4;
}

/* corner brackets */
.corner{
  position: absolute;
  width: 22px;
  height: 22px;
  background: var(--accent);
}
.corner.tl{ top: 0; left: 0; }
.corner.tr{ top: 0; right: 0; }
.corner.bl{ bottom: 0; left: 0; }
.corner.br{ bottom: 0; right: 0; }

/* ===== Google Sheet entries grid ===== */
.grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 30px;
}

/* sheet entry card */
.entry-card{
  border: 2px solid var(--accent);
  padding: 14px;
  color: var(--accent);
  min-height: 120px;
}
.entry-card p{
  margin: 0 0 10px 0;
  font-size: 14px;
  line-height: 1.3;
}

/* responsive */
@media (max-width: 900px){
  .box-row, .grid{
    grid-template-columns: 1fr;
  }
  .hero-mid{ font-size: 64px; }
}