* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Apple SD Gothic Neo", sans-serif;
  background: #f5f5f5;
}

/* 전체 레이아웃 */
.container {
  display: flex;
  height: 100vh;
  justify-content: center;
}

/* 좌측 */
.left {
  display: flex;
  justify-content: center;
  align-items: center;
}

.left-box {
  width: 100%;
  max-width: 800px;
  background: #fff;
  padding: 40px;
  border-radius: 10px;
}

.logo {
  font-size: 64px;
  font-weight: 800;
  margin-bottom: 20px;
  border-bottom: 1.8px solid #cccccc;
  padding-bottom: 10px;
  line-height: 1.2;
}

.logo-desc {
  font-size: 14px;
  font-weight: 600;
  color: #666;
  margin-left: 4px;
}

.desc-title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 10px;
}

.desc {
  font-size: 16px;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.6;
}

/* 아이콘 영역 */
.features {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.feature {
  width: 120px;
  height: 130px;
  background: #444;
  color: #fff;
  font-size: 14px;
  display: flex;
  border-radius: 8px;
  flex-direction: column;
  padding: 14px;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.feature svg {
  width: 56px;
}

/* 우측 */
.right {
  width: 450px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-box {
  width: 100%;
  padding: 40px;
}

.input {
  width: 100%;
  padding: 14px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
}

.login-btn {
  width: 100%;
  padding: 14px;
  border: 1px solid #0073c6;
  color: #0073c6;
  background: #fff;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
}

.login-btn:hover {
  background: #0073c6;
  color: #fff;
}

/* =========================
   Tablet (900px 이하)
========================= */
@media (max-width: 900px) {
  .container {
    flex-direction: column;
    height: auto;
  }

  .left {
    padding: 20px;
  }

  .right {
    width: 100%;
  }

  .left-box {
    max-width: 100%;
  }

  .login-box {
    padding: 20px;
  }
}

/* =========================
   Mobile (600px 이하)
========================= */
@media (max-width: 600px) {
  .logo {
    font-size: 40px;
  }

  .logo-desc {
    font-size: 12px;
  }

  .desc-title {
    font-size: 16px;
  }

  .desc {
    font-size: 14px;
  }

  .features {
    justify-content: flex-start;
  }

  .feature {
    width: 45%;
    height: 110px;
    font-size: 12px;
  }

  .feature svg {
    width: 40px;
  }

  .input {
    padding: 12px;
    font-size: 13px;
  }

  .login-btn {
    padding: 12px;
    font-size: 14px;
  }
}

/* =========================
   Small Mobile (400px 이하)
========================= */
@media (max-width: 400px) {
  .feature {
    /* width: 100%; */
  }

  .logo {
    font-size: 32px;
  }
}